As we continue our look at heat waves, I figured we should first define what they are by looking at the criteria Environment Canada uses to define heat events.
Weather
Brief La Niña expected in fall 2025 before more stable pattern returns says U.S. forecaster
A brief period of La Nina conditions is favoured in the fall and early winter 2025-26 before reverting to a more stable El Nino-Southern Oscillation (ENSO) neutral, the U.S. Climate Prediction Center said on Thursday.
Topsy-turvy precipitation this year challenges crop predictions
Rainfall can vary dramatically over a short distance. Precipitation maps can’t catch all the deviations, but they do provide a broad perspective.
Prairie forecast: Unsettled weather to continue
Forecast prepared August 13, covering August 13 to 20, 2025
For this forecast period it looks like the active pattern that developed last week will continue with a couple of lows forecasted to impact parts of the Prairies.
Southern Alberta receives needed moisture
July sees severe drought continue among many Prairie regions
Canadian Drought Monitor Report for July shows severe drought continuing to grip farmers in Alberta and the Prairies
Above average temperatures expected
July was a cooler than average month right across the Prairies, with most places coming in just slightly below average.
Prairie forecast: Merging lows bring plenty of chances for rain
Forecast issued Aug. 6, covering Aug. 6 to 13, 2025
For this forecast period we start with a small but fairly potent area of low pressure lifting northwards through Manitoba. Meanwhile, weak high pressure is covering Alberta and Saskatchewan.
Blocking patterns lead to heat waves
To get long-lasting heat waves, we need something known as a blocking pattern to develop.
Prairie forecast: Sunny and warm with a chance of rain
Forecast issued July 30, covering July 30 to August 6, 2025
This forecast period is looking much more stable and predictable as a large area of high pressure dominates the Prairie region.
Saskatchewan Crop Report: Rains benefit some crops
Between two to 83 mm of rain falls on province
Heavy rains fell on parts of Saskatchewan during the week ended July 17, 2025, but they were a mixed blessing for fields and pastures.
