702  
WOCN12 CWTO 222109  
YELLOW ADVISORY - FROST  
FOR NORTHERN ONTARIO  
UPDATED BY ENVIRONMENT CANADA  
AT 5:09 P.M. EDT TUESDAY 22 SEPTEMBER 2026.  
---------------------------------------------------------------------  
YELLOW LEVEL ADVISORY - FROST - FOR:  
IGNACE - ENGLISH RIVER  
FORT FRANCES - RAINY LAKE  
SEARCHMONT - MONTREAL RIVER HARBOUR - BATCHAWANA BAY  
GREATER SUDBURY AND VICINITY  
ELLIOT LAKE - RANGER LAKE  
NORTH BAY - WEST NIPISSING.  
 
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IMPACT LEVEL: MODERATE  
FORECAST CONFIDENCE: HIGH  
 
==DISCUSSION==  
 
PATCHY FROST IS LIKELY IN MANY REGIONS AGAIN ON WEDNESDAY MORNING.  
 
DAMAGE TO PLANTS, TREES, AND CROPS IS POSSIBLE. TAKE PREVENTATIVE  
MEASURES TO PROTECT COLD-SENSITIVE PLANTS, TREES, AND CROPS. COVER  
UP PLANTS, ESPECIALLY THOSE IN FROST-PRONE AREAS.  
 
PLEASE CONTINUE TO MONITOR ALERTS AND FORECASTS ISSUED BY  
ENVIRONMENT CANADA. TO REPORT SEVERE WEATHER, SEND AN EMAIL TO  
ONSTORM(AT)EC.GC.CA OR POST REPORTS ON SOCIAL MEDIA USING  
(HASH)ONSTORM.  
 
HTTP://WEATHER.GC.CA  
 
END/OSPC  
 
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