032
WWCN11 CWTO 201628
SNOW SQUALL WARNING
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 11:28 A.M. EST MONDAY 20 JANUARY 2025.
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SNOW SQUALL WARNING FOR:
GREY - BRUCE.
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==DISCUSSION==
LAKE EFFECT SNOW SQUALLS CONTINUE.
WHAT:
HEAVY LAKE EFFECT SNOW WITH ACCUMULATIONS OF 20 TO 60 CM. LOCALLY
HIGHER AMOUNTS ARE POSSIBLE, ESPECIALLY OVER THE BRUCE PENINSULA.
REDUCED VISIBILITY IN HEAVY SNOW AND LOCAL BLOWING SNOW.
WHEN:
CONTINUING THROUGH TUESDAY, WITH SOME AREAS CONTINUING INTO
WEDNESDAY NIGHT.
ADDITIONAL INFORMATION:
HEAVY LAKE EFFECT SNOW OFF LAKE HURON WILL LIFT NORTHWARD TODAY AND
EXTEND FARTHER INLAND AS WINDS BECOME WESTERLY. THE MOST SIGNIFICANT
LAKE EFFECT SNOW BAND IS EXPECTED TO BECOME FOCUSED OVER BRUCE
COUNTY AND NORTHERN GREY COUNTY THIS AFTERNOON INTO TUESDAY. IN
ADDITION, WESTERLY WINDS GUSTING UP TO 60 KM/H WILL DEVELOP THIS
MORNING RESULTING IN BLOWING SNOW, ESPECIALLY FOR EXPOSED AREAS NEAR
LAKE HURON.
LAKE EFFECT SNOW IS EXPECTED TO PERSIST THROUGH TUESDAY BEFORE
WEAKENING AND SHIFTING NORTHWARD TO BE CONFINED MAINLY OVER THE
BRUCE PENINSULA TUESDAY NIGHT INTO WEDNESDAY.
THERE IS CONSIDERABLE UNCERTAINTY IN THE EXACT PLACEMENT OF THE
HEAVIEST LAKE EFFECT SNOW BANDS.
SNOW SQUALLS CAUSE WEATHER CONDITIONS TO VARY
CONSIDERABLY(SEMICOLON) CHANGES FROM CLEAR SKIES TO HEAVY SNOW
WITHIN JUST A FEW KILOMETRES ARE COMMON. VISIBILITY WILL BE SUDDENLY
REDUCED TO NEAR ZERO AT TIMES IN HEAVY SNOW AND BLOWING SNOW.
SURFACES SUCH AS HIGHWAYS, ROADS, WALKWAYS AND PARKING LOTS MAY
BECOME DIFFICULT TO NAVIGATE DUE TO ACCUMULATING SNOW.
PLEASE CONTINUE TO MONITOR ALERTS AND FORECASTS ISSUED BY
ENVIRONMENT CANADA.
TO REPORT SEVERE WEATHER IN ONTARIO, SEND AN EMAIL TO
ONSTORM(AT)EC.GC.CA OR TWEET REPORTS USING (HASH)ONSTORM.
HTTP://WEATHER.GC.CA
END/OSPC
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