224
WWCN11 CWTO 190159
SEVERE THUNDERSTORM WATCH
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 9:59 P.M. EDT FRIDAY 18 APRIL 2025.
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SEVERE THUNDERSTORM WATCH FOR:
=NEW= BRUCE PENINSULA - SAUBLE BEACH - TOBERMORY
=NEW= OWEN SOUND - BLUE MOUNTAINS - NORTHERN GREY COUNTY
SHELBURNE - MANSFIELD - NORTHERN DUFFERIN COUNTY
SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY
HANOVER - DUNDALK - SOUTHERN GREY COUNTY.
SEVERE THUNDERSTORM WATCH ENDED FOR:
LONDON - MIDDLESEX
WOODSTOCK - TILLSONBURG - OXFORD COUNTY
HURON - PERTH
WATERLOO - WELLINGTON
ORANGEVILLE - GRAND VALLEY - SOUTHERN DUFFERIN COUNTY.
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==DISCUSSION==
CONDITIONS ARE FAVOURABLE FOR THE DEVELOPMENT OF SEVERE
THUNDERSTORMS THAT MAY BE CAPABLE OF PRODUCING STRONG WIND GUSTS,
LARGE HAIL AND HEAVY RAIN.
HAZARDS:
TOONIE SIZE HAIL.
LOCALLY HEAVY RAINFALL.
TIMING:
LATE THIS EVENING INTO THE OVERNIGHT.
DISCUSSION:
STRONG THUNDERSTORMS ARE EXPECTED TO TRACK ACROSS PORTIONS OF
SOUTHERN ONTARIO TONIGHT.
LARGE HAIL CAN DAMAGE PROPERTY AND CAUSE INJURY. HEAVY DOWNPOURS CAN
CAUSE FLASH FLOODS AND WATER POOLING ON ROADS. LIGHTNING KILLS AND
INJURES CANADIANS EVERY YEAR. REMEMBER, WHEN THUNDER ROARS, GO
INDOORS(EXCLAMATION MARK)
SEVERE THUNDERSTORM WATCHES ARE ISSUED WHEN ATMOSPHERIC CONDITIONS
ARE FAVOURABLE FOR THE DEVELOPMENT OF THUNDERSTORMS THAT COULD
PRODUCE ONE OR MORE OF THE FOLLOWING: LARGE HAIL, DAMAGING WINDS,
TORRENTIAL RAINFALL.
EMERGENCY MANAGEMENT ONTARIO RECOMMENDS THAT YOU TAKE COVER
IMMEDIATELY IF THREATENING WEATHER APPROACHES.
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.
FOR MORE INFORMATION:
HTTPS://WWW.ONTARIO.CA/PAGE/BE-PREPARED-EMERGENCY.
HTTP://WEATHER.GC.CA
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