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SPECIAL WEATHER STATEMENT ISSUED BY ENVIRONMENT CANADA

Submitted by manager on Thu, 2013-08-01 12:56

WOCN11 CWVR 312249
SPECIAL WEATHER STATEMENT
ISSUED BY ENVIRONMENT CANADA
AT 3:49 PM PDT WEDNESDAY 31 JULY 2013.
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SPECIAL WEATHER STATEMENT FOR:
=NEW= METRO VANCOUVER
=NEW= GREATER VICTORIA
=NEW= FRASER VALLEY
=NEW= HOWE SOUND
=NEW= WHISTLER
=NEW= SUNSHINE COAST
=NEW= SOUTHERN GULF ISLANDS
=NEW= EAST VANCOUVER ISLAND
=NEW= WEST VANCOUVER ISLAND
=NEW= INLAND VANCOUVER ISLAND
=NEW= NORTH VANCOUVER ISLAND.

CHANGE IN THE WEATHER PATTERN FOR THE LONG WEEKEND

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==DISCUSSION==
AFTER A MONTH-LONG DRY SPELL THE WEATHER PATTERN ACROSS SOUTHERN BRITISH COLUMBIA IS ABOUT TO CHANGE. THE PERISTENT RIDGE OF HIGH PRESSURE THAT HAS STEERED ALL WEAK SUMMER STORMS NORTHWARD INTO THE GULF OF ALASKA WILL BE REPLACED BY A WEAK LOW PRESSURE SYSTEM THAT WILL EVENTUALLY BRING SHOWERS AND THUNDERSHOWERS.

THE LOW IS JUST OFF THE WASHINGTON COAST AND IS SPREADING HIGH CLOUDS NORTHWARD INTO BC. OVER THE NEXT FEW DAYS THE LOW WILL LINGER OVER SOUTHERN BC AND RAINSHOWERS AND THUNDERSTORMS WILL SPREAD NORTHWARD.
THE CIRCULATION AROUND THIS LOW IS SO WEAK THAT PREDICTING THE LOCATION OF SHOWERS AND THUNDERSHOWERS WILL BE A DAY-TO-DAY CHALLENGE.