Archived Messages

Archived Notice Summary Effective Date From Effective Date To

INTERRUPTION IN DATA AVAILABILITY. Please be advised that we are currently experiencing delays in populating our data report tables. We thank you for your patience during this time of difficulty as we are working in rectifying this issue as soon as possible. Do not hesitate to contact us at ec.services.climatiques-climate.services.ec@canada.ca if you have any further questions or concerns.

2017-11-10 2017-11-14

INTERRUPTION IN DATA AVAILABILITY. Please be advised that due to some unforeseen network difficulties there will be some delays in the release of data on our Climate website. We thank you for your patience during this time of technical difficulties, and do not hesitate to contact us if you have any questions at ec.services.climatiques-climate.services.ec@canada.ca.

2017-11-07 2017-11-09

INTERRUPTION IN DATA AVAILABILITY. Due to scheduled maintenance, the data ingest to the Climate website database will be suspended from September 22nd at 4 pm to September 23rd at 8 am EST. The Climate website will still be operational during that period. Do not hesitate to contact us at ec.services.climatiques-climate.services.ec@canada.ca if you have any further questions or concerns.

2017-09-21 2017-11-09

Planned Network Updates. Environment and Climate Change Canada will be making updates to its networks between 11:00 a.m. and 1:00 p.m. EDT Monday, August 14 2017. During this period, some of our services on our Climate website may be temporarily unavailable including our Engineering Climate Datasets and Get More Data option. If you have any questions or concerns, please contact us at ec.services.climatiques-climate.services.ec@canada.ca.

2017-08-14 2017-08-14

We are currently experiencing problems with our Contact Us information web form. If you are having trouble submitting feedback via this form, please contact us at ec.services.climatiques-climate.services.ec@canada.ca. We thank you for your understanding and patience.

2016-06-29 2016-07-03

INTERRUPTION IN DATA AVAILABILITY: Our database will be down for maintenance on Tuesday, June 14, 2016 from 13:00 to 16:00 (EDT). As data may be unavailable on our website during this time, we appreciate your patience. If you have any questions or concerns, please contact us at ec.services.climatiques-climate.services.ec@canada.ca

2016-06-14 2016-06-14

There have been some delays in the release of data to Climate Data Online. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at ec.services.climatiques-climate.services.ec@canada.ca

2016-05-26 2016-05-26

We are pleased to announce the introduction of mobile friendly responsive design to our site!

2016-05-13 2016-07-13

Planned Internet Interruption. Environment and Climate Change Canada will be making changes to its internet connections between 11:30 a.m. and 1:30 p.m. EST Wednesday, January 27, 2016. During this period, some of our services may be temporarily unavailable including our Climate website.

2016-01-25 2016-01-28

Planned Internet Interruption. Environment Canada will be making changes to its internet connections between 4 a.m. and 7 a.m. EST Sunday, November 22, 2015. During this period, some of our services may be temporarily unavailable including our Climate website.

2015-11-20 2016-01-24

INTERRUPTION IN DATA AVAILABILITY: Our database will be down for maintenance for about an hour on Thursday, September 24, 2015 from 1:00 PM (EDT). As data may be unavailable on our website during this time, we appreciate your patience. If you have any questions or concerns, please contact us at climate.services@ec.gc.ca.

2015-09-22 2015-09-22

We are currently experiencing problems with our Contact Us Information Web Form. We have identified the issue and are working to rectify the problem. We ask for your patience during this time of technical difficulty. Please note that in the meantime, any information entered into the Web Form will not be submitted. If you have any questions or concerns, please contact us at

climate.services@ec.gc.ca

2015-02-05 2015-02-13

INTERRUPTION IN DATA AVAILABILITY: Our database will be down for a scheduled maintenance for about two hours on Friday, January 30, 2015 from 3:00 PM (EDT). As data may be unavailable on our website during this time, we thank for your understanding and patience. If you have any questions or concerns, please contact us at climate.services@ec.gc.ca

2015-01-30 2015-01-31

We are currently experiencing some problems with our historical radar images. We are working to rectify the problem and ask for your patience during this time of technical difficulity. If you have any questions, please contact us at climate.services@ec.gc.ca.

2014-08-12 2014-08-13

INTERRUPTION IN DATA AVAILABILITY: Our database will be down for maintenance for about an hour on Thursday, June 12, 2014 from 2:00 PM (EDT). As data may be unavailable on our website during this time, we appreciate your patience. If you have any questions or concerns, please contact us at climate.services@ec.gc.ca.

2014-06-11 2014-06-12

Due to recent upgrades, there may be interruptions with our data and historical radar images. Thank you for your patience at this time.

2014-02-24 2014-02-27

Several airport weather reporting stations have switched over to new NAV Canada sensors and reporting tools. Please click here and expand the message for the list of new NAV Canada stations with the latest data:

Expand the message

New NAV Canada stations with the latest Hourly Data:
OTTAWA INT'L Hourly Data, HAMILTON Hourly Data, DEER LAKE Hourly Data, GANDER INT'L Hourly Data, ST. JOHN'S INT'L Hourly Data, SASKATOON DIEFENBAKER INT'L Hourly Data, LONDON Hourly Data, SAULT STE MARIE Hourly Data, EDMONTON Hourly Data, YARMOUTH Hourly Data, THUNDER BAY Hourly Data, CHURCHILL Hourly Data, SMITHERS Hourly Data, RED LAKE Hourly Data, ST. CATHARINES Hourly Data, PENTICTON Hourly Data, LETHBRIDGE Hourly Data, MEDICINE HAT Hourly Data, MONCTON Hourly Data, SAINT JOHN Hourly Data, ABBOTSFORD Hourly Data, LLOYDMINSTER Hourly Data, BURWASH Hourly Data, CALGARY Hourly Data, KINGSTON Hourly Data, TIMMINS Hourly Data, PICKLE LAKE Hourly Data, CAPE DORSET Hourly Data, HALL BEACH Hourly Data, MONTREAL MIRABEL INT'L Hourly Data, HALIFAX Hourly Data, CHARLOTTETOWN Hourly Data, ARVIAT Hourly Data, GATINEAU Hourly Data, NORMAN WELLS Hourly Data, LA GRANDE RIVIERE Hourly Data, BUFFALO NARROWS Hourly Data, CRANBROOK Hourly Data, FORT NELSON Hourly Data, WEKWEETI Hourly Data, MUSKRAT DAM Hourly Data, SANDY LAKE Hourly Data, BRANDON Hourly Data, ROUYN-NORANDA Hourly Data, VAL D'OR Hourly Data, WILLIAMS LAKE Hourly Data, FORT ST. JOHN Hourly Data, WHITEHORSE Hourly Data, CLYDE RIVER Hourly Data, GJOA HAVEN Hourly Data, POND INLET Hourly Data, WINNIPEG Hourly Data, TERRACE Hourly Data, NORTH BAY Hourly Data, YELLOWKNIFE Hourly Data, KENORA Hourly Data, MONTREAL INTL Hourly Data, WABUSH Hourly Data, SIOUX LOOKOUT Hourly Data, QIKIQTARJUAQ Hourly Data, PANGNIRTUNG Hourly Data, MONT JOLI Hourly Data, SUDBURY Hourly Data, RANKIN INLET Hourly Data, ILES DE LA MADELEINE Hourly Data, GASPE Hourly Data, NANAIMO Hourly Data , CASTLEGAR Hourly Data, CAMPBELL RIVER Hourly Data , KAMLOOPS Hourly Data, PORT HARDY Hourly Data, VANCOUVER INTL Hourly Data, TORONTO INTL A Hourly Data, VICTORIA INTL A Hourly Data, INUVIK A Hourly Data,PRINCETON A Hourly Data, BELLA COOLA A Hourly Data, GRANDE PRAIRIE A Hourly Data and BATHURST A Hourly Data

New NAV Canada stations with the latest Daily Data:
OTTAWA INT'L Daily Data, HAMILTON Daily Data, DEER LAKE Daily Data, GANDER INT'L Daily Data, ST. JOHN'S INT'L Daily Data, LONDON Daily Data, SAULT STE MARIE Daily Data, EDMONTON Daily Data, YARMOUTH Daily Data, THUNDER BAY Daily Data, CHURCHILL Daily Data, SMITHERS Daily Data, RED LAKE Daily Data, PENTICTON Daily Data, MEDICINE HAT Daily Data, MONCTON Daily Data, SAINT JOHN Daily Data, ABBOTSFORD Daily Data, LLOYDMINSTER Daily Data, BURWASH Daily Data, CALGARY Daily Data, TIMMINS Daily Data, PICKLE LAKE Daily Data, CAPE DORSET Daily Data, HALL BEACH Daily Data, HALIFAX Daily Data, CHARLOTTETOWN Daily Data, NORMAN WELLS Daily Data, LA GRANDE RIVIERE Daily DataCRANBROOK Daily Data, FORT NELSON Daily Data, MUSKRAT DAM Daily Data, SANDY LAKE Daily Data, BRANDON Daily Data, WILLIAMS LAKE Daily Data, FORT ST. JOHN Daily DataWHITEHORSE Daily Data, TERRACE Daily Data, NORTH BAY,  Daily Data YELLOWKNIFE Daily Data, KENORA Daily Data, MONTREAL INTL Daily Data, WABUSH Daily Data, SIOUX LOOKOUT Daily Data, MONT JOLI Daily Data, SUDBURY Daily Data, RANKIN INLET Daily Data, ILES DE LA MADELEINE Daily Data, GASPE Daily Data, VICTORIA Daily Data, KAMLOOPS Daily Data, PORT HARDY Daily Data, VANCOUVER INTL Daily Data, TORONTO INTL A Daily Data and VICTORIA INTL A Daily Data

Alternative daily data for the following stations:

  • Saskatoon Diefenbaker Int'l -- Saskatoon RCS
  • Kingston -- Kingston Climate

Here is a list of the decommissioned Environment Canada station that will no longer be producing data:
OTTAWA MACDONALD-CARTIER INT'L A, HAMILTON A, DEER LAKE A, GANDER INT'L A, ST.JOHN'S A, SASKATOON DIEFENBAKER INT'L A, LONDON INT'L A, SAULT STE. MARIE A, EDMONTON INT'L A, YARMOUTH A, THUNDER BAY A, CHURCHILL A, SMITHERS A, RED LAKE A, ST CATHARINES A, PENTICTON A, LETHBRIDGE A, MEDICINE HAT A, MONCTON A, SAINT JOHN A, ABBOTSFORD A, LLOYDMINSTER A, BURWASH A, CALGARY INT'L A, KINGSTON A, TIMMINS VICTOR POWER A, PICKLE LAKE A, CAPE DORSET A, ARCTIC BAY A, HALL BEACH, MONTREAL/MIRABEL INT'L A, HALIFAX STANFIELD INT'L A,  CHARLOTTETOWN, ARVIAT A, GATINEAU A, LA GRANDE RIVIERE A, BUFFALO NARROWS A, CRANBROOK A, FORT NELSON A, MUSKRAT DAM 'A', ONTARIO, SANDY LAKE, BRANDON A, ROUYN A, VAL D'OR A, WILLIAMS LAKE A, FORT ST. JOHN A, WHITEHORSE A, CLYDE A, GJOA HAVEN A, POND INLET A, WINNIPEG RICHARDSON INT'L A, TERRACE A, NORTH BAY A, YELLOWKNIFE A, KENORA A, MONTREAL/PIERRE ELLIOTT TRUDEAU INTL A, WABUSH LAKE A, SIOUX LOOKOUT A, QIKIQTARJUAQ A, PANGNIRTUNG A, MONT JOLI A, SUDBURY A, RANKIN INLET A, ILES DE LA MADELEINE A, GASPE A, KAMLOOPS A, PORT HARDY A, VANCOUVER INTL A, TORONTO LESTER B. PEARSON INT'L A, VICTORIA INT'L A, INUVIK A, PRINCETON A, GRANDE PRAIRIE A and BATHURST A

2013-09-19 2014-01-31

We are pleased to announce the release of the 1981 to 2010 Canadian Climate Normals. The new Normals can be accessed by downloading and saving the file to your computer.

2013-07-03 2013-07-23

INTERRUPTION IN RADAR DATA AVAILABILITY: King City Radar will be inoperative, for two weeks starting April 8, 2013, due to scheduled renovations to the Radar. As a result, there will be no Radar images available on Climate Data Online. We thank for your understanding and patience during this time.  If you have any questions or concerns, please contact us at climate.services@ec.gc.ca

2013-04-11 2013-04-20

INTERRUPTION IN DATA AVAILABILITY: Our database will be down for a scheduled  maintenance for about an hour on Wednesday, April 10, 2013 from 1:00 PM (EDT). As data may be unavailable on our website during this time, we thank for your understanding and patience. If you have any questions or concerns, please contact us at climate.services@ec.gc.ca

2013-04-09 2013-04-10

INTERRUPTION IN DATA AVAILABILITY: Our databases will be down due to a scheduled building-wide maintenance to the electrical systems on the weekend of September 14-16, beginning 17:00 EST Friday, September 14. As a result, there will be a delay in the availability of data to Climate Data Online. We will be working diligently to make the backlog of data available once the maintenance is completed. We thank for your understanding and patience during this time. If you have any questions, please contact us at climate.services@ec.gc.ca.

2012-09-06 2012-10-16

Several airport weather reporting stations have switched over to new NAV CANADA sensors and reporting tools. Due to some unanticipated data processing issues related to the new data flow, the display of daily data from these stations is not available on our website at present. However, hourly data is now being displayed for the new stations. For more information, please click here and expand the message. Thank you for your patience while we work to fix these current issues.

Expand the message

FAQ’s

Stations that have been switched:
OTTAWA MACDONALD-CARTIER INT’L A, HAMILTON A, DEER LAKE A, GANDER INT'L A, ST.JOHN'S A, SASKATOON DIEFENBAKER INT'L A, LONDON INT'L A, SAULT STE. MARIE A, EDMONTON INT'L A, YARMOUTH A, THUNDER BAY A, CHURCHILL A, SMITHERS A, RED LAKE A, ST CATHARINES A, PENTICTON A, LETHBRIDGE A, MEDICINE HAT A, MONCTON A, SAINT JOHN A, ABBOTSFORD A, LLOYDMINSTER A, BURWASH A, CALGARY INT"L A, Kingston A, TIMMINS VICTOR POWER A, PICKLE LAKE A, CAPE DORSET A, ARCTIC BAY A and HALL BEACH

Hourly data is available from the following new NAV CANADA stations:
OTTAWA INT'L, HAMILTON, DEER LAKE, GANDER INT'L, ST. JOHN'S INT'L, SASKATOON DIEFENBAKER INT'L, LONDON, SAULT STE MARIE, EDMONTON, YARMOUTH, THUNDER BAY, CHURCHILL, SMITHERS, RED LAKE, ST. CATHARINES, PENTICTON LETHBRIDGE, MEDICINE HAT,  MONCTON, SAINT JOHN ABBOTSFORD, LLOYDMINSTER, Burwash, Calgary, Kintston, Timmins, Pickle LakeCAPE DORSET and HALL BEACH

Alternative data for Ottawa, go to:
Daily data: Ottawa CDA or Ottawa CDA RCS
Hourly data: Ottawa CDA RCS

Alternative data for Hamilton, go to:
Daily data: Hamilton RBG CS
Hourly data: Hamilton RBG CS

Alternative data for Deer Lake, go to:
Daily data: Cormack

Alternative data for Gander, go to:
Daily data: Gander Airport CS
Hourly data: Gander Airport CS

Alternative data for St. John's go to:
Daily data: St. John's West Climate
Hourly data: St. John's West Climate

Alternative data for Saskatoon Diefenbaker, go to:
Daily data: Saskatoon RCS
Hourly data: Saskatoon RCS

Alternative data for London, go to:
Daily data: London CS
Hourly data: London CS

Alternative data for Edmonton, go to:
Daily data: Edmonton Int'l CS
Hourly data: Edmonton Int'l CS

Alternative data for Yarmouth, go to:
Daily data: Yarmouth Cooltap or Baccaro Point
Hourly data: Baccaro Point

Alternative data for Thunder Bay, go to:
Daily data: Thunder Bay CS
Hourly data: Thunder Bay CS

Alternative data for Churchill, go to:
Daily data: Churchill Climate
Hourly data: Churchill Climate

Alternative data for Smithers, go to:
Daily data: Houston
Hourly data: Smithers

Alternative data for Penticton, go to:
Daily data: Summerland CS
Hourly data: Summerland CS

Alternative data for Lethbridge, go to:
Daily data: Lethbridge CDA
Hourly data: Lethbridge CDA

Alternative data for Medicine Hat, go to:
Daily data: Medicine Hat RCS
Hourly data: Medicine Hat RCS

Alternative data for Calgary, go to:
Daily data: Calgary Int'l CS
Hourly data: Calgary Int'l CS

Alternative data for Kingston, go to:
Daily data: Kingston Climate
Hourly data: Kingston Climate

Alternative data for Pickle Lake, go to:
Daily data: Pickle Lake (AUT)
Hourly data: Pickle Lake (AUT)

Alternative data for Timmins, go to:
Daily data: Timmins Climate
Hourly data: Timmins Climate

Alternative data for Cape Dorset, go to:
Daily data: Cape Dorset Climate
Hourly data: Cape Dorset Climate

Alternative data for Arctic Bay, go to:
Daily data: Arctic Bay CS
Hourly data: Arctic Bay CS

Alternative data for Hall Beach, go to:
Daily data: Hall Beach Climate
Hourly data: Hall Beach Climate


Why are these changes being introduced?
The equipment that is used to record weather conditions and the system used to process the data are obsolete and need to be modernized. This includes implementing a more reliable way to measure winds and to be able to issue reports of weather conditions more quickly, which is especially important during rapidly-changing weather.

Why are daily data not available for these stations? 
Currently, the Meteorological Service of Canada (MSC) and NAV CANADA are working together to resolve some issues in the processing of the new data format received from these sites. As a result, daily data for the new sites will not be available on Climate Data Online. The alternate stations listed above can provide you with daily data for these locations. We ask for your patience until these issues hav been resolved.

When do you expect to have these problems corrected?
These issues are currently being addresses and are of high priority. We hope to have them resolved as soon as possible.

Will the historical climate data be permanently lost?
The weather data is being captured at these two locations and it will be entered into our climate archives to ensure an unbroken record of weather and climate info.

Will all locations be changed?
These are the first two sites to be upgraded in Canada; over the next 5-6 years the new system will be implemented at roughly 200 stations across Canada.

Who owns / runs these observing sites?
These weather observing sites are owned and operated by NAV CANADA in support of aviation needs. The MSC works closely with NAV CANADA to use the weather reports from these sites to fulfill its needs (for example, for issuing public forecasts and warnings), and to make available to the Canadian public via WeatherOffice.gc.ca and climate archives websites.

I have further questions, who do I contact?
Please contact our National Climate Services office at climate.services@ec.gc.ca.

2012-09-04 2012-09-05

Hourly data from the following stations are partnered data and have not been subject to review by the National Climate Archives: Ottawa Int’l, Hamilton, Deer Lake, Gander Int'l, St. John's Intl, Saskatoon Diefenbaker Int'l, London, Sault Ste Marie, Edmonton, Yarmouth, Thunder Bay, Churchill, Smithers, St. Catharines, Penticton and Red Lake.

2012-05-25 2012-05-31

A new set of IDF curves FTP download was produced on February 09, 2012 and posted on March 09, 2012. Please read the Whats_New_EC_IDF.pdf file for a list of all of the changes.

2012-03-16 2012-05-31

We need your input. Participate in a usability test. The results will be used to better organize the information on our site.

2012-03-08 2012-03-08

We need your input. Participate in a usability test. The results will be used to better organize the information on our site.

2012-02-20 2012-02-21

There have been some delays in the release of data to Climate Data Online. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2012-01-24 2012-01-27

We need your input.Participate in a card-sorting exercise. The results will be used to better organize the information on our site.

2012-01-16 2012-01-16

There have been some delays in the release of hourly data to Climate Data Online. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2011-12-30 2012-01-02

Several airport weather reporting stations have switched over to new NAV CANADA sensors and reporting tools. Due to some unanticipated data processing issues related to the new data flow, the display of daily data from these stations is not available on our website at present. However, hourly data is now being displayed for the new stations. For more information, please click here and expand the message. Thank you for your patience while we work to fix these current issues.

Expand the message

FAQ's

Stations that have been switched:
OTTAWA MACDONALD-CARTIER INT’L A, HAMILTON A, DEER LAKE A, GANDER INT'L A, ST.JOHN'S A, SASKATOON DIEFENBAKER INT'L A, LONDON INT'L A, SAULT STE. MARIE A, EDMONTON INT'L A, YARMOUTH A, THUNDER BAY A, CHURCHILL A, SMITHERS A, RED LAKE A, ST CATHARINES A, PENTICTON A, LETHBRIDGE A, MEDICINE HAT A, MONCTON A, SAINT JOHN A, ABBOTSFORD A, LLOYDMINSTER A, BURWASH A, CALGARY INT"L A, Kingston A, TIMMINS VICTOR POWER A, PICKLE LAKE A, CAPE DORSET A, ARCTIC BAY A and HALL BEACH

Hourly data is available from the following new NAV CANADA stations:
OTTAWA INT'L, HAMILTON, DEER LAKE, GANDER INT'L, ST. JOHN'S INT'L, SASKATOON DIEFENBAKER INT'L, LONDON, SAULT STE MARIE, EDMONTON, YARMOUTH, THUNDER BAY, CHURCHILL, SMITHERS, RED LAKE, ST. CATHARINES, PENTICTON LETHBRIDGE, MEDICINE HAT,  MONCTON, SAINT JOHN ABBOTSFORD, LLOYDMINSTER, Burwash, Calgary, Kintston, Timmins, Pickle LakeCAPE DORSET and HALL BEACH

Alternative data for Ottawa, go to:
Daily data: Ottawa CDA or Ottawa CDA RCS
Hourly data: Ottawa CDA RCS

Alternative data for Hamilton, go to:
Daily data: Hamilton RBG CS
Hourly data: Hamilton RBG CS

Alternative data for Deer Lake, go to:
Daily data: Cormack

Alternative data for Gander, go to:
Daily data: Gander Airport CS
Hourly data: Gander Airport CS

Alternative data for St. John's go to:
Daily data: St. John's West Climate
Hourly data: St. John's West Climate

Alternative data for Saskatoon Diefenbaker, go to:
Daily data: Saskatoon RCS
Hourly data: Saskatoon RCS

Alternative data for London, go to:
Daily data: London CS
Hourly data: London CS

Alternative data for Edmonton, go to:
Daily data: Edmonton Int'l CS
Hourly data: Edmonton Int'l CS

Alternative data for Yarmouth, go to:
Daily data: Yarmouth Cooltap or Baccaro Point
Hourly data: Baccaro Point

Alternative data for Thunder Bay, go to:
Daily data: Thunder Bay CS
Hourly data: Thunder Bay CS

Alternative data for Churchill, go to:
Daily data: Churchill Climate
Hourly data: Churchill Climate

Alternative data for Smithers, go to:
Daily data: Houston
Hourly data: Smithers

Alternative data for Penticton, go to:
Daily data: Summerland CS
Hourly data: Summerland CS

Alternative data for Lethbridge, go to:
Daily data: Lethbridge CDA
Hourly data: Lethbridge CDA

Alternative data for Medicine Hat, go to:
Daily data: Medicine Hat RCS
Hourly data: Medicine Hat RCS

Alternative data for Calgary, go to:
Daily data: Calgary Int'l CS
Hourly data: Calgary Int'l CS

Alternative data for Kingston, go to:
Daily data: Kingston Climate
Hourly data: Kingston Climate

Alternative data for Pickle Lake, go to:
Daily data: Pickle Lake (AUT)
Hourly data: Pickle Lake (AUT)

Alternative data for Timmins, go to:
Daily data: Timmins Climate
Hourly data: Timmins Climate

Alternative data for Cape Dorset, go to:
Daily data: Cape Dorset Climate
Hourly data: Cape Dorset Climate

Alternative data for Arctic Bay, go to:
Daily data: Arctic Bay CS
Hourly data: Arctic Bay CS

Alternative data for Hall Beach, go to:
Daily data: Hall Beach Climate
Hourly data: Hall Beach Climate


Why are these changes being introduced?
The equipment that is used to record weather conditions and the system used to process the data are obsolete and need to be modernized. This includes implementing a more reliable way to measure winds and to be able to issue reports of weather conditions more quickly, which is especially important during rapidly-changing weather.

Why are daily data not available for these stations?
Currently, the Meteorological Service of Canada (MSC) and NAV CANADA are working together to resolve some issues in the processing of the new data format received from these sites. As a result, daily data for the new sites will not be available on Climate Data Online. The alternate stations listed above can provide you with daily data for these locations. We ask for your patience until these issues hav been resolved.

When do you expect to have these problems corrected?
These issues are currently being addresses and are of high priority. We hope to have them resolved as soon as possible.

Will the historical climate data be permanently lost?
The weather data is being captured at these two locations and it will be entered into our climate archives to ensure an unbroken record of weather and climate info.

Will all locations be changed?
These are the first two sites to be upgraded in Canada; over the next 5-6 years the new system will be implemented at roughly 200 stations across Canada.

Who owns / runs these observing sites?
These weather observing sites are owned and operated by NAV CANADA in support of aviation needs. The MSC works closely with NAV CANADA to use the weather reports from these sites to fulfill its needs (for example, for issuing public forecasts and warnings), and to make available to the Canadian public via WeatherOffice.gc.ca and climate archives websites.

I have further questions, who do I contact?
Please contact our National Climate Services office at climate.services@ec.gc.ca.

2011-12-29 2012-08-31

We are currently experiencing some problems with the French version of the Climate Summaries on our Products & Services page. We are working to rectify the problem and ask for your patience during this time of technical difficulty. In the meantime, please refer to the data available from the English Climate Summaries page.

2011-11-18 2012-02-20

There have been some delays in the release of data to Climate Data Online. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2011-11-15 2011-11-21

There have been some delays in the release of data to Climate Data Online. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2011-10-31 2011-11-04

Since Sept. 29, 2011, there have been some delays in the release of data to Climate Data Online from our partner stations. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2011-10-25 2011-11-02

There have been some delays in the release of data to Climate Data Online. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2011-09-27 2011-09-30

There have been some recent problems with the availability of some products on our Products & Services page. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2011-09-07 2011-09-09

There have been some delays in the release of data to Climate Data Online. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2011-08-02 2011-08-04

There have been some delays in the release of data to Climate Data Online. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2011-07-19 2011-07-21

There have been some recent problems with the display of station metadata on Climate Data Online that are affecting the Customized Search tool. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2011-04-10 2011-04-11

There have been some delays in the release of data to Climate Data Online. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2011-03-21 2011-03-24

INTERRUPTION IN DATA AVAILABILITY:  Our database will be down for maintenance for a few hours on Thursday, February 10, 2011 starting at 8:00 am (EST). As data may be unavailable on our website during this time, we appreciate your patience. If you have any questions or concerns, please Contact Us.

2011-02-09 2011-02-09

There have been some recent problems with the Download Data feature on Climate Data Online. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2011-02-04 2011-02-06

The National Climate Archives On-line website has recently been experiencing frequent server errors and unusually slow wait times. We ask for your patience during this time of technical difficulty. If you experience any problems, please Contact Us

2010-12-22 2011-01-25

Hourly data is now being displayed for several new partner stations on Climate Data On-line.

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In late June of 2009, several airport stations began to switch over to new partner maintained and operated automatic weather stations. Due to a new format, hourly data from these stations were not initially displayed online. We are happy to announce that Archive software has now been updated to store and display these data.

All new partner stations are assigned new Climate ID's and names, but keep their legacy TCID (Transport Canada ID). At present, we are working on updating the metadata of these new stations. We recommend that if you are searching for data for a station that ends between 2009 and present, please use the "Nearby Stations with Data" link in the Navigation Options box at the bottom right of the data page, to determine whether there is a corresponding station available with current data.

Future updates will occur for some stations to ensure all data is archived and displayed correctly. If you have any questions or concerns, please contact us at climate.services@ec.gc.ca.

2010-11-10 2010-12-09

There have been some recent problems with the display of Daily data on Climate Data Online. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2010-11-05 2010-11-08

We are pleased to announce that David Phillips’ Weather Winners analysis of Canada’s provinces, territories and 100 largest cities is now a part of our website. It can be accessed by clicking the “Weather Winners” link on the left menu bar.

2010-09-09 2010-11-02

We are currently updating our daily extreme values in the Almanac Data. We ask for your patience at this time, as changes to the data display and values will be occurring.

2010-07-12 2010-07-15

We are pleased to announce that the popular historical publication The Climates of Canada, by Environment Canada’s weather guru David Phillips, has been added to our digital historical publication collection and is now available for download. It can be accessed by clicking the “Products and Services” link on the left menu bar and choosing "Historical Publications".

2010-04-20 2010-05-31

As of March 3 2010, the value used when converting from Celsius to Kelvins for dew point temperature in our Humidex calculation has changed. The value of 273.16 was changed to 273.15 to ensure greater accuracy.

2010-03-08 2010-04-08

Click on the new “How to Use” tab located on the Climate Data Online and Customized Search pages to receive an explanation of how to effectively use our data search tools.

2010-03-03 2010-05-03

Recent modifications have been made to how the 1971-2000 Normals codes are displayed on Climate Data Online.

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Normals Codes:

Recent modifications have been made to ensure the 1971-2000 Normals codes are displayed correctly as described in Calculation of the 1971 to 2000 Normals for Canada, on Climate Data Online. Due to changes, ALL yearly values and normals codes are now displayed, while previously available elements may no longer be displayed. For more information on Normals codes, please see Calculation of the 1971 to 2000 Normals for Canada.

2009-12-15 2010-02-01

As of November 19 2009, changes have been made to how Wind Chill and Humidex values are calculated. A detailed outline of these calculations can be found in the Glossary.

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Wind Chill and Humidex:

As of November 19 2009, changes have been made to how Wind Chill and Humidex values are calculated. Previously, Wind Chill was calculated using an equation that required a wind speed of at least 10 km/h and an ambient air temperature of 0°C or less. This implied that there was no Wind Chill for wind speeds of less than 10 km/h, which is not accurate. As a result, a new equation was introduced for wind speeds greater than 0 km/h but less than 5 km/h, and the wind speed threshold for the original equation was lowered to greater than or equal to 5 km/h. The ambient air temperature threshold of 0°C or less has remained the same for both Wind Chill calculations. These two methods of calculating Wind Chill have also been adopted by the Weatheroffice.

The equation used for the calculation of Humidex has remained the same, however, the value used when converting from Celsius to Kelvins for dew point temperature has changed. Previously, the temperature in K was determined by adding 273.1 to the temperature in degrees C. The value of 273.1 has been changed to 273.16 to ensure greater accuracy.

2009-12-07 2010-03-04

There have been some delays in the release of data to Climate Data Online. We are working to rectify the problem and ask for your patience during this time of technical difficulty. If you have any questions, please contact us at climate.services@ec.gc.ca.

2009-12-02 2009-12-06

We are pleased to announce the release of a new feature, Historical Radar to our site. The Historical Radar feature allows users to view historical radar images from 2007 to present at the national, regional and local levels. It can be accessed by clicking the “Historical Radar” link on the left menu bar.

2009-08-11 2009-12-31

Popular historical Environment Canada publications, studies, and reports from the National Climate Archive library are now available for download as electronic files. They can be accessed by clicking the “Products and Services” link on the left menu bar.

2009-07-23 2009-10-27

Due to unforeseen circumstances, as of June 4th, 2009 the CSV output of our bulk data download option is temporary unable to display station metadata (Station Name, Province, Latitude, Longitude, Elevation, Climate ID,WMO ID, TC ID) . Corrective actions are in progress and your patience is greatly appreciated. Please note that station metadata are still available on hourly, daily or monthly data display pages for each station.

2009-06-08 2009-06-16

The Climate Archive Website has been updated as of January 14, 2009.

This release includes the following new items:

  • Entire site template modification to adhere to Treasury Board's (http://www.tbs-sct.gc.ca/clf-nsi/index-eng.asp) Common Look and Feel (CLF) version 2.0 standards.
  • Site display of daily excerpts from the Weather Trivia calendar for the current day.

Please note that with the exception of daily excerpts from the Weather Trivia calendar, all other content and site links will remain the same.

2009-01-14 2009-02-11

As of July 24 2008, changes were made in how data are accessed at 25 stations.

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Changes have been made to how the data at 25 stations, which report a mix of human and automatic weather observations, are archived. Prior to July 24, 2008 the observations were combined and so were accessible by selecting just one station and now they are separated into two stations. Please see the table below for details.

Changes have been made to how the data at 25 stations, which report a mix of human and automatic weather observations, are archived. Prior to July 24, 2008 the observations were combined and so were accessible by selecting just one station and now they are separated into two stations. Please see the table below for details.
Location Province Linked Stations (if available) Alternative Split Stations Data Records Available for Alternative Split Stations
Burwash YT   BURWASH A & BURWASH AWOS  
Inuvik NT INUVIK AWOS A INUVIK A refer to for human observed hourly data (full hours), hourly and daily data prior to March 31, 2006, monthly and normals data
Gjoa Haven NU GJOA HAVEN CLIMATE (alternate) GJOA HAVEN A & GJOA HAVEN AWOS A refer to as alternative stations
Arviat NU ARVIAT AWOS ARVIAT A refer to for human observed hourly data (partial hours), hourly and daily data prior to July 24 2008, monthly and normals data
Qikiqtarjuaq NU QIKIQTARJUAQ CLIMATE (alternate) QIKIQTARJUAQ A & QIKIQTARJUAQ AWOS refer to as alternative stations
Cape Dorset NU CAPE DORSET AWOS CAPE DORSET A refer to for human observed hourly data (partial hours), hourly and daily data prior to July 24 2008, monthly and normals data
Clyde NU CLYDE AWOS CLYDE A refer to for human observed hourly data (partial hours), hourly and daily data prior to July 29 2008, monthly and normals data
Hall Beach NU HALL BEACH AWOS HALL BEACH A refer to for human observed hourly data (partial hours), hourly and daily data prior to July 24 2008, monthly and normals data
Iqaluit NU IQALUIT AWOS IQALUIT A refer to for human observed hourly data (full hours), hourly and daily data prior to July 18 2008, monthly and normals data
Nanisivik NU NANISIVIK A NANISIVIK AWOS refer to for automatic observations of hourly data (full hours) from July 24 2008
Pangnirtung NU PANGNIRTUNG PANGNIRTUNG A & PANGNIRTUNG AWOS refer to as alternative stations
Pond Inlet NU POND INLET AWOS POND INLET A refer to for human observed hourly data (partial hours), hourly and daily data prior to July 24 2008, monthly and normals data
Lethbridge AB LETHBRIDGE AWOS A LETHBRIDGE A refer to for human observed hourly data (partial hours), hourly data prior to March 27 2006, daily data prior to January 1 2006, monthly and normals data. Hourly data from March 27 2006 to July 4 2008 is split between both stations
Medicine Hat AB MEDICINE HAT AWOS MEDICINE HAT A refer to for human observed hourly data (partial hours), hourly data prior to April 13 2006, daily data prior to July 25 2008, monthly and normals data. Hourly data from April 13 2006 to July 24 2008 is split between both stations
Fort McMurray AB FORT MCMURRAY AWOS A FORT MCMURRAY A refer to for human observed hourly data (full hours), hourly and daily data prior to July 24 2008, monthly and normals data
Winnipeg Richardson MB WINNIPEG RICHARDSON AWOS WINNIPEG RICHARDSON INT'L A refer to for human observed hourly data (full hours), hourly and daily data prior to July 24 2008, monthly and normals data
Churchill MB CHURCHILL AWOS CHURCHILL A refer to for human observed hourly data (full hours), hourly and daily data prior to July 24 2008, monthly and normals data. As of September 23 2008 daily precipitation data is only available at the Churchill Climate station
Petawawa ON   PETAWAWA A & PETAWATA AWOS 2  
Blanc-Sablon QC BLANC-SABLON A BLANC-SABLON A (AUT) refer to as an alternative for daily data
Havre St Pierre QC   HAVRE-SAINT-PIERRE A (Climate ID 7043018) & HAVRE-SAINT-PIERRE A (Climate ID 7043020)  
Natashquan QC   NATASHQUAN A (Climate ID 7045400) & NATASHQUAN A (Climate ID 7045401)  
Chibougamau-Chapais QC CHIBOUGAMAU CHAPAIS A CHIBOUGAMAU-CHAPAIS A refer to as an alternative for hourly data from August 5 2008
Val d'Or QC   VAL-D'OR A (Climate ID 7098600) & VAL-D'OR A (Climate ID 7098603)  
Inukjuak QC   INUKJUAK A (Climate ID 7103282) & INUKJUAK A (Climate ID 701S005)  
St Anthony NL ST ANTHONY A ST ANTHONY AWOS refer to for automatic observations of hourly data (full hours) from July 24 2008

2008-09-22 2011-05-08
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