SK and MB now face the brunt of anomalous warmth as ridging shunts across the region, leading to a number of temperature records being surpassed.
This is the recent summary for SK while MB has set new high temp records as well today, likely to be the focus in the next update from EC which I’ll add in when it’s available.
EDIT: The MB heat stats are now included, along with the tornado summary for AB.
Weather summary for Saskatchewan updated by Environment Canada at 8:40 a.m. CST Friday 2 June 2017. Discussion. A hot dry airmass shifted eastward from Alberta into Saskatchewan on Thursday. As a result, several new high temperature records were established, along with some additional records not included in the original bulletin. The heat combined with a weak cold front caused thunderstorms to develop in the late afternoon. As these moved through during the night they produced some severe wind gusts in the southwest. The following locations set new record high temperatures: ASSINIBOIA New record of 33.6 Old record of 31.7 set in 1948 Records started in 1915 ELBOW New record of 31.9 Old record of 31.7 set in 1956 Records started in 1918 MEADOW LAKE New record of 28.6 Old record of 27.8 set in 1932 Records started in 1925 MELFORT New record of 32.6 Old record of 32.2 set in 1956 Records started in 1902 MOOSE JAW New record of 34.6 Record of 33.3 set in 1914 Records started in 1894 PRINCE ALBERT New record of 33.0 Record of 32.2 set in 1948 Records started in 1886 REGINA New record of 34.5 Record of 33.3 set in 1948 Records started in 1884 STONY RAPIDS New record of 30.9 Old record of 28.1 set in 2007 Records started in 1961 WATROUS New record of 34.6 Old record of 32.2 set in 1956 Records started in 1953 WEYBURN New record of 32.9 Record of 30.6 set in 1956 Records started in 1917 WYNYARD New record of 30.9 Record of 30.0 set in 1972 Records started in 1940 The following locations reported severe wind gusts: Val Marie had gusts of 98 km/h at 9:45 p.m. Rockglen had gusts of 106 km/h at 10:44 p.m. Please note that this summary may contain preliminary or unofficial information and does not constitute a complete or final report. End/PASPC
Weather summary for Manitoba issued by Environment Canada at 7:21 p.m. CDT Friday 2 June 2017. Discussion. The hot airmass which was over Saskatchewan yesterday shifted east into Manitoba today, resulting in several new maximum temperature records. The following locations set new record high temperatures: BRANDON New record of 34.4 Old record of 32.2 set in 1948 Records started in 1890 DAUPHIN New record of 32.6 Old record of 32.2 set in 1948 Records started in 1890 FISHER BRANCH New record of 34.1 Old record of 29.0 set in 1997 Records started in 1978 GIMLI New record of 33.4 Old record of 28.9 set in 1948 Records started in 1944 GRETNA New record of 34.9 Old record of 30.6 set in 1973 Records started in 1956 MELITA New record of 32.9 Old record of 28.7 set in 2006 Records started in 1993 NORWAY HOUSE New record of 28.9 Old record of 28.3 set in 1976 Records started in 1897 PILOT MOUND New record of 33.8 Old record of 31.2 set in 1986 Records started in 1938 PINAWA New record of 31.2 Old record of 31.0 set in 1988 Records started in 1964 PORTAGE LA PRAIRIE New record of 34.1 Old record of 32.8 set in 1948 Records started in 1886 WINNIPEG RICHARDSON INTERNATIONAL New record of 34.5 Old record of 32.2 set in 1948 Records started in 1872 The following locations tied existing record high temperatures: BERENS RIVER Tied record of 30.6 Record of 30.6 set in 1934 Records started in 1905 SWAN RIVER Tied record of 31.7 Record of 31.7 set in 1956 Records started in 1908 Please note that this summary may contain preliminary or unofficial information and does not constitute a complete or final report. End/PASPC
Weather summary for Alberta issued by Environment Canada at 9:28 p.m. MDT Friday 2 June 2017. Discussion. Tornado Touchdown Near Three Hills on June 2, 2017 Confirmed On the afternoon of June 2, 2017, a severe thunderstorm moved through the area near Three Hills. Environment Canada received reports of an EF-0 tornado near Three Hills. Preliminary storm assessment: Time: 4:40 to 5:10 pm MDT Location: Just north of Three Hills to just east of Three Hills Damage: Some roof damage, RV destroyed, some trees snapped Preliminary Rating: EF-0 Estimated Wind Speed: 90-130 km/h Environment Canada meteorologists are actively seeking pictures of the tornado or damage it may have caused. Should you have any information regarding this event, or to report severe weather at any time, please call 1-800-239-0484, send an email to storm(at)ec.gc.ca, or tweet to (hash)abstorm. Note that these storm assessments are considered preliminary and may be changed if more information becomes available. Please note that this summary may contain preliminary or unofficial information and does not constitute a complete or final report. End/PASPC
Heat warnings and SWS also remain in place for the region, along with severe thunderstorm watches as an advancing front sparks convection.
Additional rounds of heat are likely for the west through the medium range before any longer-lasting changes take hold down the line.
Another rainmaker is set to track through the GL this weekend and into the early part of next week, before potentially impacting the Maritimes or passing just to the south as it heads east.
This is the interpretation from the 12z Canadian @ hour 72 / 84 / 96:
Total precipitation from the 12z GFS ensembles @ hour 120:
Guidance is beginning to hone in on a possible pattern shift around the 12th, past one more round of western ridging & eastern troughing later next week.
It looks as if heights will eventually lower through BC and AB while a ridge in the central part of the continent is finally allowed to move eastward towards ON and QC. The Euro weeklies have been fairly consistent with at least a pattern moderation in this period (and perhaps beyond) so we’ll have to see how the consensus shapes up moving forward.
It remains to be seen how Atlantic Canada fares if this comes to pass because the latest set of weeklies put the brakes on much of a warmup making headway into the region, particularly for NL and Labrador.
12z EPS 500mb height anomalies @ hour 144 / 192 / 240: