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WWCN11 CWTO 252105
SEVERE THUNDERSTORM WATCH
FOR SOUTHERN ONTARIO
UPDATED BY ENVIRONMENT CANADA
AT 5:05 P.M. EDT SATURDAY 25 MAY 2019.
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SEVERE THUNDERSTORM WATCH FOR:
=NEW= NEWMARKET - GEORGINA - NORTHERN YORK REGION
=NEW= PICKERING - OSHAWA - SOUTHERN DURHAM REGION
=NEW= UXBRIDGE - BEAVERTON - NORTHERN DURHAM REGION
=NEW= INNISFIL - NEW TECUMSETH - ANGUS
      CITY OF TORONTO
      WINDSOR - ESSEX - CHATHAM-KENT
      SARNIA - LAMBTON
      ELGIN
      LONDON - MIDDLESEX
      SIMCOE - DELHI - NORFOLK
      DUNNVILLE - CALEDONIA - HALDIMAND
      OXFORD - BRANT
      NIAGARA
      CITY OF HAMILTON
      HALTON - PEEL
      VAUGHAN - RICHMOND HILL - MARKHAM
      HURON - PERTH
      WATERLOO - WELLINGTON
      ORANGEVILLE - GRAND VALLEY - SOUTHERN DUFFERIN COUNTY
      SHELBURNE - MANSFIELD - NORTHERN DUFFERIN COUNTY
      SAUGEEN SHORES - KINCARDINE - SOUTHERN BRUCE COUNTY
      HANOVER - DUNDALK - SOUTHERN GREY COUNTY.

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==DISCUSSION==

THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON ACROSS MOST OF 
SOUTHERN ONTARIO. 

THE MAIN THREATS ASSOCIATED WITH THESE STORMS WILL BE STRONG WIND 
GUSTS AND HAIL. SOME LOCALIZED FLOODING IS ALSO POSSIBLE.

STRONG WIND GUSTS CAN TOSS LOOSE OBJECTS, DAMAGE WEAK BUILDINGS, 
BREAK BRANCHES OFF TREES AND OVERTURN LARGE VEHICLES. 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. 

THE OFFICE OF THE FIRE MARSHAL AND EMERGENCY MANAGEMENT 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, SEND AN EMAIL TO 
ONSTORM(AT)CANADA.CA OR TWEET REPORTS USING (HASH)ONSTORM. 

FOR MORE INFORMATION: 
HTTP://WWW.EMERGENCYMANAGEMENTONTARIO.CA/ENGLISH/BEPREPARED/BEPREPARED.HTML.

HTTP://WEATHER.GC.CA

END/OSPC




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