159
WOCN11 CWTO 301312
YELLOW ADVISORY - FROST
FOR SOUTHERN ONTARIO
ISSUED BY ENVIRONMENT CANADA
AT 9:12 A.M. EDT THURSDAY 30 APRIL 2026.
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YELLOW LEVEL ADVISORY - FROST - FOR:
=NEW= CITY OF TORONTO
=NEW= WATFORD - PINERY PARK - EASTERN LAMBTON COUNTY
=NEW= ELGIN
=NEW= LONDON - MIDDLESEX
=NEW= SIMCOE - DELHI - NORFOLK
=NEW= DUNNVILLE - CALEDONIA - HALDIMAND
=NEW= OXFORD - BRANT
=NEW= NIAGARA
=NEW= CITY OF HAMILTON
=NEW= MISSISSAUGA - BRAMPTON
=NEW= HALTON HILLS - MILTON
=NEW= BURLINGTON - OAKVILLE
=NEW= PICKERING - OSHAWA - SOUTHERN DURHAM REGION
=NEW= VAUGHAN - RICHMOND HILL - MARKHAM.
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IMPACT LEVEL: MODERATE
FORECAST CONFIDENCE: HIGH
==DISCUSSION==
FROST MAY DAMAGE SOME CROPS IN FROST-PRONE AREAS.
WHAT:
PATCHY FROST IS EXPECTED AS TEMPERATURES DROP TO NEAR OR BELOW
FREEZING TONIGHT.
WHEN:
OVERNIGHT INTO EARLY FRIDAY MORNING.
DAMAGE TO PLANTS, TREES, AND CROPS IS POSSIBLE. COVER UP PLANTS,
ESPECIALLY THOSE IN FROST-PRONE AREAS.
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
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