Scattered and isolated thunderstorms are possible over the region later this afternoon and evening with the threat all but gone by 9:00 PM, with areas from London-Sarnia to Windsor-Point Pelee having a slightly elevated chance of seeing a strong wind gust or two in thunderstorms. ACCN10 CWTO 220750 FORECAST OF THUNDERSTORM POTENTIAL FOR THE PROVINCE OF ONTARIO ISSUED BY ENVIRONMENT CANADA AT 2:52 AM EDT FRIDAY 22 AUGUST 2014. THE NEXT STATEMENT WILL BE ISSUED AT 4.30 PM TODAY. --------------------------------------------------------------------- FORECAST OF THUNDERSTORM POTENTIAL. TODAY AND TONIGHT.. ALL OF ONTARIO: NO SEVERE THUNDERSTORMS FORECAST. SATURDAY.. ALL OF ONTARIO: NO SEVERE THUNDERSTORMS FORECAST. --------------------------------------------------------------------- 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 ===================================== USA NWS: ...OH VALLEY... DOWNSTREAM...WEAK HEIGHT RISES AND NEGLIGIBLE LARGE SCALE FORCING WILL LIKELY NEGATE ORGANIZED SEVERE THUNDERSTORMS ALONG BUOYANT BUT WEAKLY-SHEARED SFC FRONT ACROSS PORTIONS OF THE MID MS AND OH VALLEY. EVEN SO...STRONG DIURNAL HEATING SHOULD AID ISOLATED THUNDERSTORMS THAT MAY PRODUCE LOCALLY SEVERE WIND GUSTS AND PERHAPS SOME HAIL.
Posted on: Fri, 22 Aug 2014 10:34:34 +0000
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