342  
WWCN11 CWTO 212148  
SNOW SQUALL WARNING  
FOR SOUTHERN ONTARIO  
UPDATED BY ENVIRONMENT CANADA  
AT 4:48 P.M. EST TUESDAY 21 JANUARY 2025.  
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SNOW SQUALL WARNING FOR:  
TOWN OF PARRY SOUND - ROSSEAU - KILLBEAR PARK  
HUNTSVILLE - BAYSVILLE.  
 
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==DISCUSSION==  
 
HEAVY LAKE EFFECT SNOW SQUALLS CONTINUE TONIGHT.  
 
WHAT:  
HEAVY LAKE EFFECT SNOW WITH ADDITIONAL ACCUMULATIONS OF 15 TO 30 CM.  
THE HIGHEST AMOUNTS ARE EXPECTED CLOSE TO GEORGIAN BAY.  
REDUCED VISIBILITY IN HEAVY SNOW AND LOCAL BLOWING SNOW.  
 
WHEN:  
INTO WEDNESDAY MORNING.  
 
ADDITIONAL INFORMATION:  
LAKE EFFECT SNOW SQUALLS WILL PERSIST INTO WEDNESDAY MORNING BEFORE  
WEAKENING AND SHIFTING NORTHWARD. THE HIGHEST AMOUNTS ARE EXPECTED  
CLOSER TO GEORGIAN BAY.  
WESTERLY WINDS GUSTING TO 50 KM/H WILL RESULT IN LOCAL BLOWING SNOW  
ESPECIALLY FOR AREAS NEAR GEORGIAN BAY.  
 
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.  
RAPIDLY ACCUMULATING SNOW COULD MAKE TRAVEL DIFFICULT OVER SOME  
LOCATIONS. CONSIDER POSTPONING NON-ESSENTIAL TRAVEL UNTIL CONDITIONS  
IMPROVE. ROAD CLOSURES ARE POSSIBLE.  
 
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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