ACCN10 CWTO 212325
FORECAST OF THUNDERSTORM POTENTIAL FOR THE PROVINCE OF ONTARIO
ISSUED BY ENVIRONMENT CANADA AT 7:25 PM EDT TUESDAY 21 MAY 2013.
THE NEXT STATEMENT WILL BE ISSUED AT 4.00 AM WEDNESDAY.
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FORECAST OF THUNDERSTORM POTENTIAL.
TONIGHT..WIDELY SCATTERED THUNDERSTORMS ACROSS SOUTHERN ONTARIO.
THESE WILL BE GENERALLY NON-SEVERE, HOWEVER SOME HAIL, HEAVY
DOWNPOURS AND GUSTY WINDS ARE POSSIBLE.
WEDNESDAY..SCATTERED THUNDERSTORMS ARE LIKELY OVER SOUTHERN ONTARIO.
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS MUCH OF THE
AREA WITH STRONG WINDS THE PRIMARY THREAT. LARGE HAIL AND
TORRENTIAL DOWNPOURS ARE ALSO POSSIBLE.
THURSDAY..NO THUNDERSTORMS ARE EXPECTED OVER ONTARIO.
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A THUNDERSTORM IS DEFINED AS SEVERE IF IT PRODUCES ONE OR MORE OF THE
FOLLOWING:
 - WIND GUSTS OF 90 KM/H OR GREATER.
 - HAIL OF 2 CENTIMETRES IN DIAMETER OR GREATER.
 - RAINFALL AMOUNTS OF 50 MILLIMETRES OR GREATER IN ONE HOUR OR LESS.
 - A TORNADO.
NOTE: THIS FORECAST IS ISSUED TWICE DAILY FROM MAY 1 TO SEPTEMBER 30.
END/OSPC