062
WOCN11 CWTO 211650
YELLOW ADVISORY - FROST
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 12:50 P.M. EDT MONDAY 21 SEPTEMBER 2026.
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YELLOW LEVEL ADVISORY - FROST - FOR:
=NEW= GATINEAU
=NEW= MIDLAND - COLDWATER - ORR LAKE
=NEW= ORILLIA - LAGOON CITY - WASHAGO
=NEW= MERRICKVILLE-WOLFORD - KEMPTVILLE
=NEW= WESTPORT - CHARLESTON LAKE
=NEW= CITY OF OTTAWA
=NEW= PRESCOTT AND RUSSELL
=NEW= MAXVILLE - ALEXANDRIA
=NEW= WINCHESTER - NEWINGTON
=NEW= SMITHS FALLS - PERTH - EASTERN LANARK COUNTY
=NEW= TOWN OF PARRY SOUND - ROSSEAU - KILLBEAR PARK
=NEW= PORT CARLING - PORT SEVERN
FENELON FALLS - BALSAM LAKE PARK - NORTHERN KAWARTHA LAKES
APSLEY - WOODVIEW - NORTHERN PETERBOROUGH COUNTY
BANCROFT - BON ECHO PARK
PLEVNA - SHARBOT LAKE - WESTERN LANARK COUNTY
HUNTSVILLE - BAYSVILLE
BRACEBRIDGE - GRAVENHURST
HALIBURTON
RENFREW - PEMBROKE - BARRY'S BAY
ALGONQUIN
BURK'S FALLS - BAYFIELD INLET.
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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
CONDITIONS ARE FAVOURABLE FOR THE DEVELOPMENT OF FROST TONIGHT.
PATCHY FROST IS LIKELY EARLY TUESDAY MORNING.
DAMAGE TO PLANTS, TREES, AND CROPS IS POSSIBLE. TAKE PREVENTATIVE
MEASURES TO PROTECT COLD-SENSITIVE PLANTS, TREES, AND CROPS.
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 SOCIAL MEDIA USING
(HASH)ONSTORM. TO REPORT SEVERE WEATHER IN GATINEAU, SEND AN EMAIL
TO ONSTORM(AT)EC.GC.CA OR POST REPORTS ON SOCIAL MEDIA USING
(HASH)QCSTORM.
HTTP://WEATHER.GC.CA
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