WUCN13 CWTO 232230 SEVERE THUNDERSTORM WARNING ISSUED BY ENVIRONMENT CANADA. REGIONAL CENTRE TORONTO ONTARIO. 6.30 PM EDT SUNDAY 23 AUGUST 1998. SEVERE THUNDERSTORM WARNING ISSUED FOR.. NORTHEASTERN REGIONAL MUNICIPALITY OF NIAGARA. A SEVERE THUNDERSTORM OVER THE WESTERN END OF LAKE ONTARIO IS TURNING TOWARD THE SOUTHEAST AND IS EXPECTED TO HIT THE NIAGARA ON THE LAKE AREA NEAR 7 PM. THIS STORM HAS THE POTENTIAL TO PRODUCE DAMAGING DOWNBURSTS TO 120 KM/H. 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 MEASURES ONTARIO RECOMMENDS TAKING COVER IMMEDIATELY WHEN THREATENING WEATHER APPROACHES. THIS WARNING IS IN EFFECT UNTIL 8.30 PM.