422
FOCN45 CWWG 191200
SIGNIFICANT WEATHER DISCUSSION ISSUED BY THE PRAIRIE AND ARCTIC STORM
PREDICTION CENTRE OF ENVIRONMENT CANADA AT 7:00 AM CDT SATURDAY APRIL
19 2025.
ALERTS IN EFFECT...BLIZZARD WARNINGS FOR BAKER LAKE, RESOLUTE BAY,
GJOA HAVEN, AND KUGLUKTUK. SNOWFALL WARNING FOR CAMBRIDGE BAY.
SYNOPTIC OVERVIEW...00Z UPPER AIR ANALYSIS SHOWING A SHARP TROUGH
FROM HUDSON BAY THROUGH SOUTHERN MB INTO NEW MEXICO. SHARP UPPER
RIDGE FROM THE PACIFIC NORTHWEST THROUGH ALBERTA INTO THE CENTRAL
ARCTIC. UPPER TROUGH OVER GREAT BEAR LAKE, SUPPORTING A 989 MB LOW
NORTHEAST OF YELLOWKNIFE AT 06Z. WARM FRONT EXTENDING FROM THIS LOW
SE AND COLD FRONT W. RIDGE OF HIGH PRESSURE FROM HUDSON BAY THROUGH
MB.
DISCUSSION...
WESTERN PRAIRIES...LOW OVER THE NWT WILL BRING AN ATTENDANT COLD
FRONT THROUGH ALBERTA TODAY BRINGING SHOWERS AND THUNDERSTORMS ONCE
AGAIN, MAINLY TO THE FOOTHILLS FOR THIS AFTERNOON. CAPE+SHEAR NOT
OVERLY IMPRESSIVE SO CONVECTION SHOULD BE SPOTTY AND LOW TOPPED.
A REPEAT PERFORMANCE IS LIKELY IN THE CARDS FOR SUNDAY AS AN UPPER
TROUGH APPROACHES FROM THE WEST. DEVELOPING LOW AT THE BASE OF THIS
FEATURE WILL LIKELY BRING THE NEXT BOUT OF HIW TO AB, PRIMARILY IN
THE FORM OF ACCUMULATING SNOW ON MONDAY. DETAILS TO FOLLOW.
KITIKMEOT/HIGH ARCTIC...NWT LOW CONTINUES TO BRING A SWATH OF HEAVY
SNOW AND BLOWING SNOW CURVING UP TOWARD THE NORTHEAST TODAY. SHARPLY
REDUCED VISIBILITY IN BLIZZARD CONDITIONS WERE OBSERVED IN KUGLUKTUK
LAST NIGHT, AND HEAVY SNOW BEGAN IN CAMBRIDGE BAY AS WELL.
THESE CONDITIONS WILL SOON BE OBSERVED IN GJOA HAVEN, WHERE A
BLIZZARD WARNING IS IN EFFECT FOR LATER THIS MORNING. SIMILAR
CONDITIONS CAN BE EXPECTED IN RESOLUTE BAY WHERE VISIBILITY REMAINS
POOR AND WILL LIKELY REMAIN SO INTO SUNDAY, AS THE PARENT DISTURBANCE
WILL BECOME NEARLY QUASI-STATIONARY AS IT SLOWLY WEAKENS.
KIVALLIQ...LOW NEAR YELLOWKNIFE MOVES EASTWARD TODAY, ENDING UP NEAR
BAKER LAKE TONIGHT AND SPREADING SNOW THROUGH MUCH OF THE REGION.
HIGHEST AMOUNTS WILL BE BAKER LAKE, WITH 10-15 CM SNOW EXPECTED BY
SUNDAY MORNING. SOUTHEAST WINDS OF 40 GUSTING 60 KM/H WILL FURTHER
REDUCE VISIBILITY IN BLOWING SNOW. AS THE SYSTEM MOVES EASTWARD ON
SUNDAY STRONG NORTHWEST WINDS OF 60 GUSTING 80 KM/H WILL DEVELOP IN
BAKER LAKE, GIVING BLIZZARD CONDITIONS FOR MOST OF THE DAY.
REMAINDER OF KIVALLIQ WILL SEE MUCH LOWER ACCUMULATIONS, LIKELY IN
THE 2-5 CM RANGE, ALONG WITH SOME REDUCED VISIBILITIES IN BLOWING
SNOW.
BAFFIN...NIL SIG WX.
NORTHERN MANITOBA...SYSTEM AFFECTING THE KIVALLIQ WILL CLIP THE AREA,
BUT EFFECT SHOULD BE LIMITED TO A FEW FLURRIES OR SHOWERS MAINLY OVER
THE FAR NORTH.
EASTERN PRAIRIES...NIL SIG WX.
NWT...NIL SIG WX.
END/FULTON/VAN LOCHEM
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