699
WUCN11 CWTO 291729
SEVERE THUNDERSTORM WARNING
UPDATED BY ENVIRONMENT CANADA
AT 1:29 PM EDT SUNDAY 29 JUNE 2008.
---------------------------------------------------------------------
SEVERE THUNDERSTORM WARNING FOR:
DUNNVILLE - CALEDONIA - HALDIMAND
NIAGARA FALLS - WELLAND - SOUTHERN NIAGARA
REGION
ST. CATHARINES - GRIMSBY - NORTHERN NIAGARA
REGION.
---------------------------------------------------------------------
==DISCUSSION==
AT 1:10 RADAR SHOWED A LINE OF STRONG TO SEVERE
THUNDERSTORMS FROM
NEAR DUNNVILLE TO ST CATHARINES. SOUTHERN HALDIMAND
COUNTY TO NEAR
VINELAND. THESE STORMS ARE MOVING SLOWLY EASTWARD
AND NORTHEASTWARD
AT ABOUT 20 KM/H. SOME OF THESE STORMS ARE CAPABLE
OF PRODUCING
LARGE HAIL DAMAGING WINDS AND TORRENTIAL DOWNPOURS.
FREQUENT CLOUD
TO GROUND LIGHTNING IS ALSO ASSOCIATED. IN ADDITION
A TRAINED
SPOTTED HAS REPORTED CLOUD ROTATION OVER CENTRAL
NIAGARA. AS A
RESULT THERE IS ALSO THE RISK FOR AN ISOLATED
TORNADO.
THIS IS A WARNING THAT SEVERE THUNDERSTORMS ARE
IMMINENT OR OCCURRING
IN THESE REGIONS. REMEMBER SOME SEVERE THUNDERSTORMS
PRODUCE
TORNADOES..LISTEN FOR UPDATED WARNINGS. EMERGENCY
MANAGEMENT ONTARIO
RECOMMENDS TAKING COVER IMMEDIATELY WHEN THREATENING
WEATHER
APPROACHES.
NOTE..A SUMMARY OF ALL WARNINGS AND WATCHES FOR
SOUTHERN ONTARIO IS
AVAILABLE IN THE WWCN11 CWTO BULLETIN ISSUED
IMMEDIATELY FOLLOWING
THIS BULLETIN.
END/GR/OSPC