431
FOCN45 CWWG 301900
SIGNIFICANT WEATHER DISCUSSION ISSUED BY THE PRAIRIE AND ARCTIC STORM
PREDICTION CENTRE OF ENVIRONMENT CANADA AT 2:00 PM CDT SUNDAY MARCH
30 2025.
ALERTS IN EFFECT...NONE AT THIS TIME.
SYNOPTIC OVERVIEW...ALOFT, RIDGING LIES ACROSS THE BC/AB BORDER.
A LOW CENTRE SITS OVER NORTHERN YUKON TERRITORY. A SECOND LOW CENTRE
LIES OVER HUDSON STRAIT WITH AN ASSOCIATED TROUGH ARCING WESTWARD,
BACK INTO THE SOUTHERN KIVALLIQ. THE POLAR JET ROUNDS THE WESTERN AND
SOUTHERN FLANKS OF THE YUKON LOW AND ACROSS THE EASTERN PRAIRIES
BEFORE BECOMING ZONAL ACROSS EASTERN CANADA.
AT THE SURFACE, MOST OF WESTERN CANADA IS UNDER THE INFLUENCE OF HIGH
PRESSURE, CENTERED BY A HIGH OVER MID NWT/NU BORDER. THE ASSOCIATED
RIDGE STRETCHES FROM THE HIGH ARCTIC DOWN INTO THE PRAIRIE PROVINCES
WITH A SECONDARY ARM HEADING EAST THROUGH NORTHERN ONTARIO INTO
CENTRAL QUEBEC. TROUGHING LIES OVER SOUTHERN BAFFIN ISLAND AND BACKS
IN TOWARDS NORTHERN HUDSON BAY.
DISCUSSION...
AB...LINGERING STRATUS, FLURRIES, AND ISOLATED AREAS OF FREEZING
DRIZZLE ARE EXPECTED TO CONTINUE OVER PARTS OF CENTRAL AND SOUTHERN
ALBERTA. SOME CLEARING IS EXPECTED TODAY, ALTHOUGH FOG PATCHES ARE
LIKELY TO RETURN TONIGHT PARTICULARLY FOR AREAS THAT MANAGE TO REMAIN
CLEAR.
MB/SK...FOLLOWING THE PERIODS OF LIGHT SNOW SUNDAY, THE BUILDING
ARCTIC RIDGE COMING DOWN FROM THE NORTH WILL CLEAR SKIES TONIGHT AND
KEEP TEMPERATURES A TAD BELOW SEASONAL (OR NOTICEABLY COLDER OVER
PORTIONS OF NORTHERN MB) MONDAY AND TUESDAY.
OUTLOOK: SNOW IS POISED TO MOVE INTO PARTS OF NORTHERN AND CENTRAL
ALBERTA ON TUESDAY, AND OVER SOUTHERN AB, SK AND EXTREME SOUTHEASTERN
MB ON WEDNESDAY AS TWO SEPARATE DISTURBANCES MOVE THROUGH EACH
REGION. OF NOTE, A GENERAL 5 TO 10 CM IS EXPECTED WITH THESE SYSTEMS,
BUT HIGHER AMOUNTS ALONG THE EASTERN FOOTHILLS ARE POSSIBLE BOTH
TUESDAY AND WEDNESDAY.
NT...WEAK SHORTWAVE WILL MOVE THROUGH NT TODAY AND TONIGHT, GIVING
LOCALIZED SNOWFALL AMOUNTS OF 2 CM TO COMMUNITIES ALONG MACKENZIE
RIVER. THIS SYTEM WILL CONTINUE TO MIGRATE SOUTHWARD ON MONDAY,
DEEPENING AS IT DOES SO, GENERATING HIGHER AMOUNTS OVER AREAS NEAR
GREAT SLAVE LAKE AND THE AB/SK BORDERS.
NU...NIL SIG WX.
END/SPC-WPG/VAN LOCHEM
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