CONVECTIVE WEATHER FORECAST FOR THE PROVINCE OF ONTARIO

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ACCN10 CWTO 302358 CCA
CONVECTIVE WEATHER FORECAST FOR THE PROVINCE OF ONTARIO
ISSUED BY ENVIRONMENT CANADA ONTARIO REGION
AT 7:58 PM EDT SUNDAY 30 MAY 2004.
THIS FORECAST IS ISSUED AT 4 AM AND 4.30 PM DAILY BETWEEN MAY 1
AND SEPTEMBER 30.

NOTE: THIS IS NOT A SEVERE WEATHER WATCH WARNING OR SPECIAL WEATHER
STATEMENT.

DISCUSSION OF THUNDERSTORM POTENTIAL.

TONIGHT..ISOLATED NON SEVERE THUNDERSTORMS WITH VERY HEAVY
DOWNPOURS GIVING LOCALLY 50 MM OR MORE OVER NORTHWESTERN ONTARIO
ESPECIALLY NEAR WESTERN LAKE SUPERIOR.

MONDAY..ISOLATED THUNDERSTORMS OVER SOUTHWESTERN ONTARIO LATE IN THE
DAY MAY BRIEFLY APPROACH SEVERE LIMITS WITH STRONG WIND GUSTS..HEAVY
DOWNPOURS AND SMALL HAIL. ELSEWHERE OVER SOUTHERN ONTARIO THERE IS A
CHANCE OF AN ISOLATED NON SEVERE THUNDERSTORM WITH HEAVY DOWNPOURS.

TUESDAY..CHANCE OF NON-SEVERE THUNDERSTORMS WITH HEAVY DOWNPOURS
AND SMALL HAIL OVER SOUTHERN ONTARIO.

A SEVERE THUNDERSTORM IS DEFINED AS HAVING ONE OR MORE OF THE
FOLLOWING

- WIND GUSTS OF 90 KM/H OR GREATER.
- HAIL OF 2 CENTIMETRES DIAMETER OR GREATER.
- RAINFALL RATE GREATER THAN 50 MILLIMETRES IN 1 HOUR OR
LESS OR 75 MILLIMETRES IN 3 HOURS OR LESS.
- TORNADOES

END/KUHN