Extreme Events: Data Sources

Climate Normals

The primary source of historic climate data on extreme events is Environment Canada.

Environment Canada hosts: Canada's National Climate Archive | Climate Normals & Averages 1971-2000.  Climate normals are available for each weather station in Saskatchewan and include information on a variety of extremes.  The attached example for North Battleford includes the following:

-    Extreme maximum temperature in a month and year
-    Extreme minimum temperature in a month and year
-    Extreme daily rainfall and date
-    Extreme daily snowfall and date
-    Extreme snow depth at month end and date
-    Maximum hourly wind speed, date and direction
-    Maximum wind gust speed, date and direction
-    Extreme humidex and date
-    Extreme wind chill and date

Annual Summaries

Environment Canada provides annual summaries of the top 10 weather stories for Canada (since 1996) along with regional summaries (since 2000). (Visit archive). The summaries often reflect the extreme weather events that were experienced across the country in any one year.

Of particular interest for 2010 is the #6 story - Saskatchewan’s Summer of Storms.  It highlights the thunderstorm, flooding, winds and tornadoes that were experienced across the southern portion of the province.

Atmospheric Hazards for the Prairies and Northern Regions

Go to: Environment Canada Hazards website

This regional website provides access to historic climate data and analysis, and information on how to prepare and adapt to atmospheric hazards or extreme events. The data is summarized by type of hazard as well as by selected sites from across the province.  The site-specific information is useful to consider in adaptation planning for the specific community or surrounding area.

Atmospheric Hazards

  • Snowfall
  • Rainfall
  • Rain on Snow
  • Tornadoes
  • Hail
  • Blizzards
  • Extreme Cold
  • Freezing Precipitation
  • Extreme Heat
  • Lightning
  • Drought
  • Wind 
  • Fog

Saskatchewan Sites

  • Stony Rapids
  • Key Lake
  • Buffalo Narrows
  • La Ronge
  • Lloydminster
  • North Battleford
  • Swift Current
  • Saskatoon
  • Prince Albert
  • Nipawin
  • Yorkton 
  • Regina
  • Whitewood 
  • Estevan

Hazardous Weather

Go to: Environment Canada Hazardous Weather website

This national website includes an extensive section on hazardous weather.  Part of the site provides information on extreme events by season (Table 1).  The weather types are defined and links are provided to information on how to prepare for the event.

Table 1: Hazardous Weather Events by Season
Summer Events
Winter Events
  • Fog
  • Frost
  • Hail
  • Heat and Humidity
  • Lightning
  • Storm surges
  • Thunderstorms
  • Tornadoes
  • Wind
  • Blizzards
  • Freezing rain and Ice pellets
  • Ice fog
  • Rain
  • Snow
  • Wind chill
  • Winter storm