931
FOCN45 CWWG 041200
SIGNIFICANT WEATHER DISCUSSION ISSUED BY THE PRAIRIE AND ARCTIC STORM
PREDICTION CENTRE OF ENVIRONMENT CANADA AT 7:00 AM CDT SATURDAY APRIL
4 2026.
ALERTS IN EFFECT...NONE.
SYNOPTIC OVERVIEW...ALOFT, DEEP UPPER LOWS OVER WESTERN ALASKA AND
MINNESOTA WITH ZONAL FLOW OVER WESTERN CANADA. STRONG SHORTWAVE
TROUGH OVER NORTHERN ALBERTA. UPPER HIGH OVER THE BEAUFORT SEA AND
UPPER LOW OVER NORTHERN BAFFIN ISLAND. SLIGHT UPPER RIDING OVER YUKON
TERRITORY AND ONTARIO. NORTHERLY FLOW OVER THE NORTHERN ARCTIC.
AT THE SURFACE, THERE ARE A SERIES OF WEAK LOWS FROM THE GULF OF
ALASKA TO NORTHERN ALBERTA, AND NORTHERN MANITOBA WITH A FRONTAL
BOUNDARY CONNECTING THEM. A 1008 MB LOW SITS IN SOUTHERN WISCONSIN
WITH AN INVERTED TROUGH STRETCHING INTO SOUTHWESTERN MANITOBA.
TWO 1040 MB HIGHS SIT OVER THE NORTHERN NT AND NORTHERN QUEBEC WITH A
RIDGE BETWEEN THEM.
DISCUSSION...
PRAIRIES...DISSIPATING LOW IN NORTHERN MANITOBA WILL BE ABSORBED BY
NORTHERN ALBERTA LOW MOVING EASTWARD TODAY, BRINGING MIXED TYPE
PRECIPITATION TO THE PRAIRIES. SOME FREEZING RAIN CONTINUES OVER A
SMALL AREA OF NE AB/NW SK THIS MORNING BUT SHOULDN'T AMOUNT TO MUCH.
SOME HIGHLY LOCALIZED HEAVY SNOW POCKETS ARE ALSO POSSIBLE AROUND THE
LOW AND ALONG THE COLD FRONT OVER THE NORTHERN FOOTHILLS BUT NOT MUCH
EVIDENCE TO SUPPORT THE MODEL OUTPUT SO FAR. LIKELY IT'S PICKING UP
ON SOME CONVECTION AND INFLATING THE QPF. BY TONIGHT BOTH SNOW
FLURRIES AND SHOWERS WITH A RISK OF FREEZING RAIN ARE POSSIBLE OVER
CENTRAL SASKATCHEWAN AND MANITOBA BRINGING COOLER TEMPERATURES AND
FLURRIES ALONG ITS COLD FRONT ON SUNDAY TO SOUTHERN MANITOBA AND
PARTS OF SOUTHERN SASKATCHEWAN. THE BAROCLINIC ZONE HANGS UP ALONG
THE ALBERTA FOOTHILLS WITH 2-5 CM SNOW EXPECTED FOR EASTER SUNDAY,
INCLUDING THE CITY OF CALGARY. TEMPERATURES OVER MANITOBA WILL DROP
BACK INTO DOUBLE DIGITS BELOW ZERO AGAIN ON MONDAY MORNING.
ARCTIC...A STRENGTHENING GRADIENT OVER THE KIVALLIQ ON SUNDAY WILL
BRING NORTHWESTERLY WINDS OF 40 KM/H GUSTING TO 60 KM/H AND BLOWING
SNOW BUT BLIZZARD CONDITIONS ARE NOT EXPECTED AT THIS TIME. SOME
BLOWING SNOW IS POSSIBLE THROUGH MUCH OF THE KITIKMEOT AND NORTHWEST
ARCHIPELAGO AS WELL.
END/LUZNY/ROMBOUGH
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page