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WOCN11 CWTO 232111

WEATHER ADVISORY

FOR SOUTHERN ONTARIO

ISSUED BY ENVIRONMENT CANADA

AT 5:11 P.M. EDT SUNDAY 23 MARCH 2025.

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WEATHER ADVISORY FOR:

=NEW= INNISFIL - NEW TECUMSETH - ANGUS

=NEW= SHELBURNE - MANSFIELD - NORTHERN DUFFERIN COUNTY

=NEW= GREY - BRUCE

=NEW= BARRIE - COLLINGWOOD - HILLSDALE.



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==DISCUSSION==



WINTER WEATHER TRAVEL ADVISORY IN EFFECT.



WHAT: 

LOCAL SNOWFALL AMOUNTS NEAR 10 CM. 

REDUCED VISIBILITY IN AREAS OF HEAVIER SNOW. 



WHEN: 

TONIGHT. LAKE EFFECT FLURRIES BEGIN MONDAY AND CONTINUE THROUGH 

TUESDAY OR WEDNESDAY. 



DISCUSSION: 

A LOW PRESSURE SYSTEM WILL BEGIN TO AFFECT THE REGION TONIGHT 

BRINGING A BRIEF PERIOD OF HEAVY SNOWFALL. THE SNOW MAY BECOME MIXED 

WITH RAIN BY MONDAY MORNING. LAKE EFFECT FLURRIES OFF LAKE HURON 

WILL BEGIN MONDAY AFTERNOON AND CONTINUE THROUGH TUESDAY OR 

WEDNESDAY. LOCAL SNOWFALL AMOUNTS THROUGH TUESDAY MAY EXCEED 10 CM 

DEPENDING ON WHERE LAKE EFFECT SNOW BANDS SET UP.



MOTORISTS SHOULD EXPECT HAZARDOUS WINTER DRIVING CONDITIONS AND 

ADJUST TRAVEL PLANS ACCORDINGLY. BE PREPARED TO ADJUST YOUR DRIVING 

WITH CHANGING ROAD CONDITIONS. IF VISIBILITY IS REDUCED WHILE 

DRIVING, SLOW DOWN, WATCH FOR TAIL LIGHTS AHEAD AND BE PREPARED TO 

STOP. 



FOR ROAD CONDITIONS AND OTHER TRAVELLER INFORMATION FROM THE 

MINISTRY OF TRANSPORTATION, VISIT HTTPS://WWW.ONTARIO.CA/511, 

HTTPS://WWW.TWITTER.COM/511ONTARIO, OR CALL 5-1-1. 



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 POST REPORTS ON X USING (HASH)ONSTORM.



HTTP://WEATHER.GC.CA



END/OSPC