903 WWCN16 CWWG 102358 SEVERE WEATHER BULLETIN ISSUED BY ENVIRONMENT CANADA AT 5:58 PM MDT TUESDAY 10 JUNE 2008. --------------------------------------------------------------------- WATCHES/WARNINGS IN EFFECT FOR NORTHERN ALBERTA... TORNADO WARNING FOR: =NEW= YELLOWHEAD COUNTY NEAR MACKAY WILDWOOD AND EVANSBURG =NEW= LAC STE. ANNE COUNTY NEAR MAYERTHORPE AND SANGUDO =NEW= LAC STE. ANNE COUNTY NEAR CHERHILL AND GLENEVIS =NEW= PARKLAND COUNTY NEAR ENTWISTLE FALLIS AND TOMAHAWK. AT 5:50 PM A TORNADO WAS REPORTED TOUCHING DOWN BRIEFLY 25 KM WEST OF WABAMUN NEAR SEBA BEACH. THE STORM WHICH PRODUCED THE TORNADO IS MOVING WEST AT 30 KM/H AND MAY AFFECT THE TOWN OF EVANSBURG. THIS IS A WARNING THAT SEVERE THUNDERSTORMS WITH TORNADOES ARE IMMINENT OR OCCURRING IN THESE REGIONS. MONITOR WEATHER CONDITIONS. TAKE IMMEDIATE SAFETY PRECAUTIONS. NOTE..A SUMMARY OF ALL WARNINGS AND WATCHES FOR NORTHERN ALBERTA IS AVAILABLE IN THE WWCN16 CWWG BULLETIN ISSUED IMMEDIATELY FOLLOWING THIS BULLETIN. PLEASE REFER TO THE LATEST PUBLIC FORECASTS FOR FURTHER DETAILS. TORNADO WATCH FOR: CITY OF EDMONTON - ST. ALBERT - SHERWOOD PARK SPRUCE GROVE - MORINVILLE - MAYERTHORPE - EVANSBURG FORT SASKATCHEWAN - VEGREVILLE - REDWATER - SMOKY LAKE DRAYTON VALLEY - DEVON - RIMBEY - PIGEON LAKE LEDUC - CAMROSE - WETASKIWIN - TOFIELD. CONDITIONS ARE FAVOURABLE FOR THE FORMATION OF FUNNEL CLOUDS OR WEAK TORNADOES. CONDITIONS ARE FAVOURABLE FOR THE DEVELOPMENT OF FUNNEL CLOUDS AND TORNADOES. THESE TYPES OF TORNADOES FORM OUT OF WEAK THUNDERSTORMS AND ARE USUALLY NOT AS DESTRUCTIVE AS THEIR SEVERE THUNDERSTORM COUSIN. THEY ARE DIFFICULT TO TRACK WITH DOPPLER RADAR AND CAN APPEAR WITHOUT WARNING. THEY NORMALLY MOVE SLOWLY AND CAN LAST FOR MANY MINUTES. THEY OFTEN APPEAR AS A GIANT COLUMN OF DUST FROM THE GROUND TO THE BOTTOM OF THE THUNDERSTORM. THEIR DESTRUCTIVE POWER IS USUALLY FELT OVER A VERY SMALL AREA. TREAT ALL FUNNEL CLOUDS AND TORNADOES SERIOUSLY AND AVOID WHEN POSSIBLE. SHOULD ONE DEVELOP NEARBY TAKE SHELTER UNDERGROUND OR IN A REINFORCED STRUCTURE LIKE A BATHROOM OR INTERIOR CLOSET. IF YOU ARE IN YOUR VEHICLE TRY TO MOVE AWAY FROM THE TORNADO AT RIGHT ANGLES. ENVIRONMENT CANADA CONTINUES TO MONITOR THE SITUATION CLOSELY. PLEASE CONTINUE TO MONITOR YOUR LOCAL MEDIA OR WEATHERADIO FOR FURTHER UPDATES. SHOULD YOU SPOT A FUNNEL CLOUD OR TORNADO...AND ONLY IF IT IS SAFE TO DO SO...YOU CAN CALL 1-800-239-0484 TO REPORT YOUR SIGHTING. PLEASE NOTE THIS PHONE NUMBER IS FOR REPORTING SEVERE WEATHER ONLY. SEVERE THUNDERSTORM WATCH FOR: WESTLOCK - BARRHEAD - ATHABASCA WHITECOURT - EDSON - FOX CREEK - SWAN HILLS. POSSIBLE HEAVY RAIN AND LARGE HAIL. THIS IS AN ALERT TO THE POTENTIAL DEVELOPMENT OF SEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS. MONITOR WEATHER CONDITIONS..LISTEN FOR UPDATED STATEMENTS. IF THREATENING WEATHER APPROACHES TAKE IMMEDIATE SAFETY PRECAUTIONS. --------------------------------------------------------------------- WATCHES/WARNINGS ENDED FOR NORTHERN ALBERTA... TORNADO WARNING ENDED FOR: LAC STE. ANNE COUNTY NEAR ONOWAY AND LAC STE. ANNE PARKLAND COUNTY NEAR WABAMUN CARVEL AND KEEPHILLS PARKLAND COUNTY NEAR STONY PLAIN SPRUCE GROVE AND ENOCH. --------------------------------------------------------------------- ==DISCUSSION== RADAR INDICATES THUNDERSTORMS ARE INTENSIFYING IN THE WESTLOCK AND WHITECOURT REGIONS. THE MAIN THREATS WITH THESE STORMS ARE LOCAL HEAVY DOWNPOURS AND LARGE HAIL. THUNDERSTORMS ARE CURRENTLY MOVING INTO THE LEDUC REGION AND ARE MOVING NORTHWESTWARDS AT 30 KM/H. AT 2:55 PM FUNNEL CLOUDS WERE REPORTED WITH THESE THUNDERSTORMS. IT IS POSSIBLE THESE FUNNEL CLOUDS COULD TOUCHDOWN AND PRODUCE WEAK TORNADOES. PLEASE REFER TO THE LATEST PUBLIC FORECASTS FOR FURTHER DETAILS. END/BKM/SKM