FOCN45 CWWG 061900

SIGNIFICANT WEATHER DISCUSSION ISSUED BY THE PRAIRIE AND ARCTIC STORM

PREDICTION CENTRE OF ENVIRONMENT CANADA AT 2:00 PM CDT SUNDAY APRIL

6 2025.



ALERTS IN EFFECT...NONE.



SYNOPTIC OVERVIEW...ALOFT, A HIGHLY AMPLIFIED PATTERN CONTINUES OVER

CANADA WITH A UPPER RIDGE DOMINATING WESTERN CANADA, INCLUDING THE

WESTERN ARCTIC. A LONGWAVE TROUGH SITS OVER ONTARIO WITH AN UPPER LOW

CENTERED OVER HUDSON BAY. AN UPPER RIDGE SITS OFF THE EAST COAST OF

NEWFOUNDLAND.



AT THE SURFACE, A 998 LOW SITS OVER THE BEAUFORT SEA WITH A WARM

FRONT EXTENDING SOUTHWARD THROUGH THE NWT AND INTO THE NORTHERN

PRAIRIES. THE BAROCLINIC ZONE THEN TURNS EASTWARD THROUGH NORTHERN

ONTARIO AND CONNECTS TO A 992 MB LOW OVER NORTHERN QUEBEC. A 1036 MB

HIGH SITS OVER THE KIVALLIQ.



DISCUSSION...



AB...ABOVE SEASONAL TEMPERATURES ARE EXPECTED OVER ALBERTA AGAIN

TODAY AND TOMORROW. DAYTIME HIGHS MAY SURPASS THE 20 DEGREE MARK IN

PARTS OF THE PROVINCE OVER THE NEXT COUPLE OF DAYS AS THE UPPER RIDGE

HOLDS COURT OVER THE REGION.



ON MONDAY AFTERNOON, A LOW IS SET TO CROSS THE ROCKIES, BRINGING SOME

CONVECTIVE SHOWERS AND POSSIBLY THUNDERSTORMS TO WEST CENTRAL

ALBERTA.



SK/MB...QUIET WEATHER CONTINUES IN THE EAST TODAY AND LOOKS TO

CONTINUE INTO EARLY NEXT WEEK. ABOVE SEASONAL TEMPERATURES WILL

SPREAD EASTWARD EARLY THIS WEEK AS A NEW UPPER RIDGE BEGINS TO BUILD

OVER WESTERN UNITED STATES.



NU...THE LOW OVER NORTHERN QUEBEC WILL MOVE EASTWARD TODAY AND INTO

THE LABRADOR SEA BY MONDAY MORNING. THE LOW IS FORECAST TO BEGIN TO

INTENSIFY AS IT TRAVELS EASTWARD AND WILL ALSO BEGIN TO SHUNT NORTH

INTO DAVIS STRAIT. AS THE LOW DEEPENS IT WILL BEGIN TO DRAG MOISTURE

NORTHWARD TOWARDS SOUTHERN BAFFIN ISLAND BRINGING LIGHT SNOW TO SOME

COMMUNITIES MONDAY NIGHT. THE LOW WILL ALSO BE PUSHING INTO THE

EASTWARD ADVANCING UPPER RIDGE CURRENTLY OVER WESTERN CANADA.

THIS WILL RESULT IN A TIGHTENING PRESSURE GRADIENT AND STRONG

EASTERLY SURFACE WINDS OVER SOUTHERN BAFFIN, BRINGING THE POSSIBILITY

OF SOME BLOWING SNOW TUESDAY.



NWT...STRONG WINDS HAVE DEVELOPED ALONG THE COAST OF THE AMUNDSEN

GULF TODAY, AHEAD OF THE LOW MOVING THROUGH THE REGION.



STRONG WINDS DEVELOPED IN PAULATUK, SACHS HARBOUR AND ULUKHAKTOK.

IN ULUKHAKTOK, GUSTS UP TO 80 KM/H OUT OF THE EAST/SOUTHEAST ARE

EXPECTED TO CONTINUE ALONG WITH FALLING SNOW TODAY. VISIBILITIES WILL

BE POOR IN BLOWING SNOW THROUGHOUT THE DAY. HOWEVER, THE DURATION OF

THE EVENT, ALONG WITH SNOWPACK CONDITIONS AND A STRONGLY WARMING

TEMPERATURE TREND, SUGGEST THAT A BLIZZARD WARNING IS NOT WARRANTED

AT THIS TIME. SNOWFALL WILL BE LIMITED TO ABOUT 2CM AND WINDS WILL

WEAKEN GRADUALLY BEGINNING THIS AFTERNOON. NEAR BLIZZARD CONDITIONS

ARE IN THE FORECAST. WINDS ARE NEARLY AS STRONG IN SACHS HARBOUR AND

PAULATUK TODAY, BUT OBSERVATIONS AND WEBCAMS SUGGEST THAT, WHILE

VISIBILITY IS REDUCED IN BLOWING SNOW, BLIZZARD WARNINGS ARE NOT

WARRANTED FOR THESE COMMUNITIES EITHER.



END/DYKES/ZIOLKOWSKI/STAUNTON