407
FOCN45 CWWG 141200
SIGNIFICANT WEATHER DISCUSSION ISSUED BY THE PRAIRIE AND ARCTIC STORM
PREDICTION CENTRE OF ENVIRONMENT CANADA AT 7:00 AM CDT TUESDAY
OCTOBER 14 2025.
ALERTS IN EFFECT...NONE IN EFFECT.
SYNOPTIC OVERVIEW...ALOFT, UPPER AIR ANALYSIS SHOWING A DEEP UPPER
LOW OVER HUDSON BAY, WITH UPPER RIDGING OVER THE EASTERN PRAIRIES,
AND AN UPPER TROUGH OVER THE WEST COAST OF THE USA. UPPER LOW OVER
THE HIGH ARCTIC.
LATEST SURFACE ANALYSIS SHOWING A NOW DOUBLE-BARRELLED LOW HAS MOVED
INTO HUDSON BAY. AND A 988 MB LOW OVER BANKS ISLAND. HIGH PRESSURE
SETTLING OVER THE PRAIRIES.
DISCUSSION...
SK/MB...SURFACE HIGH PRESSURE WILL BUILD IN THE WAKE OF THE PREVIOUS
SYSTEM SYSTEM WITH A COLD NIGHT EXPECTED IN MUCH OF THE AREA.
QUIET DAY WEATHER-WISE EXPECTED THROUGH THE WEEK.
NT...AN IMPULSE CURRENTLY APPROACHING FROM THE GULF OF ALASKA WILL
RESULT IN CYCLOGENESIS EAST OF THE MACKENZIE MOUNTAINS EARLY ON
WEDNESDAY. A SWATH OF PRECIPITATION WILL TRACK EASTWARD WITH THIS LOW
AS IT TRAVERSES THE CENTRAL NT. PRECIPITATION WILL PRIMARILY FALL AS
RAIN BUT COULD MIX WITH SNOW WEST OF THE RIVER. THERE IS ALSO A
SLIGHT RISK OF A TS NEAR THE LOW CENTRE ON WEDNESDAY BUT NOT ENOUGH
TO WARRANT COVERAGE IN THE ROUTINE FORECASTS.
NU...THE LOW OVER EASTERN HUDSON BAY WILL IMPACT SOUTHERN BAFFIN
ISLAND EARLY THIS WEEK, WITH SOME MIXED PRECIPITATION, PARTICULARLY
OVER HIGH TERRAIN. NO WARNING AMOUNTS ARE EXPECTED AT ANY TOWNSITES.
END/CARLSEN/VAN LOCHEM
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