Calculation Information for 1981 to 2010 Canadian Normals Data

Statistics listed below are provided as a guide to determine the validity of Normals and Extremes calculations. For example, a station with 30 years of record between 1981 and 2010 with no missing years would be a more reliable normal than a station with 15 years of record and 2 missing years. Less than 100% possible observations indicates that out of the total number of observations used, some records were missing.

Metadata including Station Name, Province, Country, Time Zone, Climate ID, WMO ID, TC ID, Latitude(dd mm), Longitude(ddd mm), Latitude(decimal degrees), Longitude(decimal degrees), and Elevation(m)
GANDER INT'L A
Province: NL Latitude (dd mm): 48 56 N
Country: CAN Longitude (ddd mm): 5434
Time Zone: NST Latitude (decimal degrees): 48.95 N
Climate ID: 8401700 Longitude (decimal degrees): -54.58
WMO ID: 71803 Elevation (m): 151.2
TC ID: YQX
Temperature
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Temperature
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
Daily Average (°C)1981201030010957100
Standard Deviation1981201030010957100
Daily Maximum (°C)1981201030010957100
Daily Minimum (°C)1981201030010957100
Extreme Maximum (°C)193720102698499.8
Extreme Minimum (°C)193720102700199.9
Precipitation
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Precipitation
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
Rainfall (mm)1981201030010957100
Snowfall (cm)1981201030010957100
Precipitation (mm)1981201030010957100
Average Snow Depth (cm)1981201030010957100
Median Snow Depth (cm)1981201030010957100
Snow Depth at Month-end (cm)19812010300360100
Extreme Daily Rainfall (mm)193720102700899.9
Extreme Daily Snowfall (cm)193720102700899.9
Extreme Daily Precipitation (mm)193720102700899.9
Extreme Snow Depth (cm)1955201020454100
Days with Maximum Temperature
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Days with Maximum Temperature
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
<= 0 °C1981201030010957100
> 0 °C1981201030010957100
> 10 °C1981201030010957100
> 20 °C1981201030010957100
> 30 °C1981201030010957100
> 35 °C1981201030010957100
Days with Minimum Temperature
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Days with Minimum Temperature
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
> 0 °C1981201030010957100
<= 2 °C1981201030010957100
<= 0 °C1981201030010957100
< -2 °C1981201030010957100
< -10 °C1981201030010957100
< -20 °C1981201030010957100
< - 30 °C1981201030010957100
Days with Rainfall
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Days with Rainfall
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
>= 0.2 mm1981201030010957100
>= 5 mm1981201030010957100
>= 10 mm1981201030010957100
>= 25 mm1981201030010957100
Days With Snowfall
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Days With Snowfall
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
>= 0.2 cm1981201030010957100
>= 5 cm1981201030010957100
>= 10 cm1981201030010957100
>= 25 cm1981201030010957100
Days with Precipitation
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Days with Precipitation
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
>= 0.2 mm1981201030010957100
>= 5 mm1981201030010957100
>= 10 mm1981201030010957100
>= 25 mm1981201030010957100
Days with Snow Depth
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Days with Snow Depth
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
>= 1 cm1981201030010957100
>= 5 cm1981201030010957100
>= 10 cm1981201030010957100
>= 20 cm1981201030010957100
Wind
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Wind
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
Speed (km/h)19812010300262880100
Most Frequent Direction19812010300262881100
Maximum Hourly Speed (km/h)19532010508328100
Maximum Gust Speed (km/h)195520102022898.9
Days with Winds >= 52 km/h19812010303944486.1
Days with Winds >= 63 km/h19812010303944486.1
Degree Days
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Degree Days
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
Above 24 °C1981201030010957100
Above 18 °C1981201030010957100
Above 15 °C1981201030010957100
Above 10 °C1981201030010957100
Above 5 °C1981201030010957100
Above 0 °C1981201030010957100
Below 0 °C1981201030010957100
Below 5 °C1981201030010957100
Below 10 °C1981201030010957100
Below 15 °C1981201030010957100
Below 18 °C1981201030010957100
Evaporation
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Evaporation
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
Lake Evaporation (mm)19811999192216894.6
Bright Sunshine
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Bright Sunshine
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
Total Hours1981200822619137698.6
Days with measureable1981200822619137698.6
% of possible daylight hours1981200822619137698.6
Extreme Daily1951200933523599
Humidex
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Humidex
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
Extreme Humidex19532010508328100
Days with Humidex >= 3019812010300262880100
Days with Humidex >= 3519812010300262880100
Days with Humidex >= 4019812010300262880100
Wind Chill
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Wind Chill
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
Extreme Wind Chill19532010508328100
Days with Wind Chill < -2019812010300262880100
Days with Wind Chill < -3019812010300262880100
Days with Wind Chill < -4019812010300262880100
Humidity
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Humidity
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
Average Vapour Pressure (kPa)19812010300262880100
Average Relative Humidity - 0600LST (%)1981201030010955100
Average Relative Humidity - 1500LST (%)1981201030010954100
Pressure
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Pressure
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
Average Station Pressure (kPa)19812010300262871100
Average Sea Level Pressure (kPa)19812010300262873100
Visibility (hours with)
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Visibility (hours with)
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
< 1 km1981201030424108091.7
1 to 9 km1981201030424108091.7
> 9 km1981201030424108091.7
Cloud Amount (hours with)
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
Cloud Amount (hours with)
Begin YearEnd YearTotal Number of YearsMissing YearsTotal Count of Observations% of Possible Observations
0 to 2 tenths1981201030424108091.7
3 to 7 tenths1981201030424108091.7
8 to 10 tenths1981201030424108091.7