WUCN13 CWTO 311858 SEVERE THUNDERSTORM WARNING UPDATED BY ENVIRONMENT CANADA. REGIONAL CENTRE TORONTO ONTARIO. 2.58 PM EDT SUNDAY 31 MAY 1998. SEVERE THUNDERSTORM WARNING FOR.. SOUTHERN REGIONAL MUNICIPALITY OF HALDIMAND-NORFOLK SOUTHERN REGIONAL MUNICIPALITY OF NIAGARA. AT 2.55 PM RADAR INDICATES A SEVERE THUNDERSTORM NEAR SIMCOE MOVING EAST AT 80 KM/H. THE STORM WILL MOVE ALONG THE NORTH SHORE OF LAKE ERIE. LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM. 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 5.00 PM. END/4/MJL