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:
Weather summary for Alberta issued by Environment Canada at 8:19 p.m. MDT Wednesday 31 May 2017. Discussion. An upper ridge gave above normal temperatures to Alberta with six new temperature records set today. Several locations were within a degree of the record high. The following locations set new record high temperatures: BROOKS New record of 32.0 Old record of 31.1 set in 1972 Records started in 1912 EDMONTON INTL New record of 31.2 Old record of 29.4 set in 1972 Records started in 1959 FORT MCMURRAY New record of 32.1 Old record of 29.9 set in 2007 Records started in 1944 LETHBRIDGE New record of 31.9 Old record of 30.0 set in 1956 Records started in 1902 VAUXHALL New record of 31.8 Old record of 31.7 set in 1972 Records started in 1914 WATERTON PARK GATE New record of 27.3 Old record of 26.0 set in 1986 Records started in 1967 The following locations saw near-record high temperatures: FORT CHIPEWYAN Near-record of 28.9 Record of 29.1 set in 2007 Records started in 1884 HIGH LEVEL Near-record of 25.8 Record of 26.2 set in 2003 Records started in 1968 MEDICINE HAT Near-record of 31.5 Record of 32.2 set in 1914 Records started in 1884 SUNDRE Near-record of 27.3 Record of 28.0 set in 1986 Records started in 1986 Please note that this summary may contain preliminary or unofficial information and does not constitute a complete or final report. End/PASPC
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.