FOCN45 CWWG 061200

SIGNIFICANT WEATHER DISCUSSION ISSUED BY THE PRAIRIE AND ARCTIC STORM

PREDICTION CENTRE OF ENVIRONMENT CANADA AT 7:00 AM 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 OVER EASTERN CANADA.



AT THE SURFACE, A WARM FRONT ARCS FROM SOUTHERN ALASKA, SOUTH THROUGH

THE MACKENZIE VALLEY AND INTO THE WESTERN PRAIRIES. A SECOND

BAROCLINIC ZONE SITS TO THE NORTH OF THE WARM FRONT OVER NORTHERN

ALASKA AND STRETCHES SOUTHEAST INTO NORTHERN SASKATCHEWAN. THE

BAROCLINIC ZONE THEN TURNS EASTWARD THROUGH NORTHERN ONTARIO AND

CONNECTS TO A 1007 MB LOW OVER NORTHERN QUEBEC. A 1035 MB HIGH SITS

OVER THE KIVALLIQ.



DISCUSSION...



WESTERN PRAIRIES...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.



EASTERN PRAIRIES...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...LOW PRESSURE OVER THE AMUNDSEN GULF MAY HAVE BROUGHT BRIEF

FREEZING RAIN TO TUKTOYAKTUK THIS MORNING, THOUGH NO OBSERVATIONS

WERE AVAILABLE. STRONG WINDS DEVELOPED IN PAULATUK, SACHS HARBOUR

AND ULUKHAKTOK. IN ULUKHAKTOK, GUSTS UP TO 80 KM/H OUT OF THE

EAST/SOUTHEAST ARE EXPECTED 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.





END/ZIOLKOWSKI/GRIFFITH