Warmth is making it’s mark through the Prairie Provinces as a western ridge steadily migrates east, bringing predominantly mild and sunny weather with it.

A handful of new high temp records were set in AB yesterday as per EC:

The pattern will be briefly interrupted over the weekend as a shortwave disturbance moves through before another bulging upper ridge looks to build back in behind it for  next week, although that one may be oriented more into SK/MB and NW ON as additional impulses could be associated with the Pacific trough farther west.

EDIT: EC has issued heat warnings for SK in relation to the upper-level ridge.

A period with maximum daily temperatures reaching near 30C and minimum overnight temperatures near 16C are expected today through Friday. By Saturday morning a cold front will have moved through the region bringing cooler temperatures.

Heat Warnings are issued when very high temperature conditions are expected to pose an elevated risk of heat illnesses, such as heat stroke or heat exhaustion.

For more heat health advice, including for vulnerable individuals, visit

Please call HealthLine 811 for advice on health risks, symptoms and precautions associated with heat.

This energy will push into the GL later in the weekend and lead to additional unsettled weather following a welcome respite in the short term. The low will likely impact ON & S QC through Sunday and into the early part of next week before moving into Atlantic Canada towards the Wed-Thurs period.

The European suite has been fairly consistent with this depiction over the last number of runs, with the GFS wavering somewhat.

00z ECMWF 500mb height anomalies @ hour 120 / day 5:


00z EPS, same timeframe:


00z GEFS low clustering @ hour 96 / 108 / 120:


The Euro and it’s ensembles offer some reinforcement of this general theme into the medium range, with lower heights oriented along the west coast and through the east while a ridge protrudes between them into the midsection of the continent.