363
FOCN45 CWWG 222000
SIGNIFICANT WEATHER DISCUSSION ISSUED BY THE PRAIRIE AND ARCTIC STORM
PREDICTION CENTRE OF ENVIRONMENT CANADA AT 2:00 PM CST SATURDAY
NOVEMBER 22 2025.
ALERTS IN EFFECT...SNOWFALL WARNING FOR HIGHWAY 93.
SYNOPTIC OVERVIEW...
ALOFT, AN UPPER LOW SITS OVER THE GULF OF ALASKA. A FLATTENING UPPER
RIDGE EXTENDS FROM THE EASTERN PACIFIC NORTHEASTWARD THROUGH
WASHINGTON INTO SOUTHERN BRITISH COLUMBIA. A SEPARATE UPPER LOW IS
LOCATED OVER THE MACKENZIE DELTA, WITH A TROUGH EXTENDING SOUTHEAST
INTO NORTHERN SASKATCHEWAN AND THEN THROUGH CENTRAL MANITOBA. A RIDGE
COVERS NORTHWESTERN ONTARIO INTO SOUTHERN HUDSON BAY. AN UPPER TROUGH
STRETCHES FROM BAFFIN ISLAND SOUTH THROUGH QUEBEC TOWARD THE
MARITIMES.
AT THE SURFACE, A 990 MB LOW IS NEAR GREAT BEAR LAKE, WITH AN
OCCLUDED FRONTAL WAVE WELL TO ITS SOUTH. THE WARM FRONT EXTENDS
THROUGH SOUTHERN MANITOBA INTO MINNESOTA; THE COLD FRONT TRAILS
SOUTHWESTWARD ACROSS SOUTHWESTERN MANITOBA INTO SASKATCHEWAN. A RIDGE
OF HIGH PRESSURE BUILDS FROM THE WESTERN U.S. NORTH INTO THE BC
INTERIOR, WHILE ANOTHER RIDGE EXTENDS OVER ONTARIO NORTHWEST TOWARD
NORTHERN MANITOBA AND THE HUDSON BAY COAST. A 999 MB LOW IS OVER
EAST-CENTRAL QUEBEC.
DISCUSSION...
AB/NORTHERN SK...SNOW IS PUSHING INTO WESTERN ALBERTA TODAY,
BEGINNING WITH HIGHER ELEVATIONS IN THE MOUNTAIN PARKS. ACCUMULATIONS
WILL BE MINIMAL TO START, WITH JUST A FEW CENTIMETRES EXPECTED OVER
HIGHER TERRAIN BY EVENING. SNOW WILL INTENSIFY AND SPREAD EAST ALONG
THE YELLOWHEAD CORRIDOR TOWARDS EDSON TONIGHT. A GENERAL SWATH OF
5-15 CM IS EXPECTED FROM EDSON SOUTHWEST TOWARDS JASPER AND DOWN
HIGHWAY 93 BY THE END OF THE WEEKEND. A SNOWFALL WARNING HAS BEEN
ISSUED FOR HIGHWAY 93, WHERE HIGHER ELEVATIONS WILL LIKELY SEE
HEAVIER SNOW. LESSER AMOUNTS ARE EXPECTED FOR COMMUNITIES AND
INFRASTRUCTURE AT LOWER ELEVATIONS THROUGHOUT THE REGION.
THIS WARNING WILL LIKELY BE EXPANDED EASTWARD THIS AFTERNOON AS THE
NORDEGG REGION COULD SEE 15-20 CM OF SNOW OVER THE NEXT 36 HOURS.
THERE IS ALSO A SLIGHT CHANCE OF FREEZING RAIN NEAR THE EDMONTON
REGION TONIGHT. PROFILES THROUGH THE AREA LOOK RATHER ON THE DRY SIDE
AWAY FROM THE HEAVIER PRECIP FURTHER WEST, SO CONFIDENCE IS LOW AT
THIS TIME.
SOUTHERN SK/MB...A BRIEF PERIOD OF CALM WEATHER IS EXPECTED UNTIL
SUNDAY AFTERNOON, WHEN ANOTHER DISTURBANCE WILL MOVE INTO SOUTHERN
SASKATCHEWAN, POTENTIALLY BRINGING LIGHT SNOW AND A RISK OF FREEZING
RAIN. THIS SYSTEM WILL MOVE INTO SOUTHERN MANITOBA ON SUNDAY EVENING
AND OVERNIGHT, CARRYING THE SAME RISKS.
LOOKING AHEAD TO MONDAY, ANOTHER DEVELOPING LOW-PRESSURE SYSTEM IS
BEING MONITORED, WHICH MAY AFFECT THE REGION MONDAY AFTERNOON THROUGH
TUESDAY. THE TRACK AND INTENSITY OF THIS SYSTEM ARE STILL UNCERTAIN,
BUT THERE IS A POSSIBILITY OF ACCUMULATING SNOW IN PARTS OF SOUTHERN
SASKATCHEWAN AND MANITOBA.
AFTER THIS SYSTEM PASSES, MORE SEASONAL TEMPERATURES ARE EXPECTED TO
SETTLE INTO THE REGION BY MIDWEEK, MARKING AN END TO THE RECENT MILD
TREND.
NT...THE LOW OVER THE NORTHERN NWT WILL REMAIN IN THE AREA TODAY,
BRINGING SNOW TO THE MACKENZIE DELTA. SNOWFALL AMOUNTS LOOK TO BE
AROUND 5-10 CM BY SUNDAY MORNING AS PRECIPITATION CONTINUES TO WRAP
AROUND THE LOW.
NUNAVUT...PATCHY FOG/STRATUS, LIGHT FLURRIES, AND ISOLATED FREEZING
DRIZZLE WILL CONTINUE ACROSS MOST COMMUNITIES. MORE ORGANIZED SNOW IS
EXPECTED OVER HUDSON STRAIT AND SOUTHERN BAFFIN ISLAND AS LOW
PRESSURE PERSISTS, THOUGH ACCUMULATIONS SHOULD REMAIN MINIMAL.
OTHERWISE, NO SIGNIFICANT WEATHER EXPECTED.
END/KOKOLSKY/CARLSEN/GRIFFITH
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