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Johnstone Strait

Forecast

Marine Forecast

Issued 09:30 PM PST 23 November 2020

Tonight and Tuesday.

Gale warning in effect.

Wind southeast 10 to 20 knots increasing to southeast 25 to 35 late this evening then diminishing to northwest 10 to 20 early Tuesday morning. Wind diminishing to light Tuesday afternoon.

Rain changing to showers Tuesday evening.

Extended Forecast

Issued 04:00 PM PST 23 November 2020
Wednesday Wind southeast 15 to 25 knots becoming northwest 10 to 20 in the afternoon.
Thursday Wind southeast 10 to 20 knots increasing to southeast 20 to 30.
Friday Wind southeast 30 to 40 knots diminishing to northwest 20 to 30.

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Map of Pacific - Georgia Basin marine weather areas Sentry Shoal - 46131 Halibut Bank - 46146 La Perouse Bank - 46206 Georgia Strait - 46303 English Bay - 46304 Discovery Island Esquimalt Harbour Kelp Reefs Malahat Race Rocks Lightstation Saturna Island Sheringham Point University of Victoria Victoria Gonzales Victoria Int'l Airport Ballenas Islands Campbell River Airport Comox Airport Entrance Island Fanny Island Nanaimo Airport Sisters Islets Estevan Point Port Alberni Tofino Airport Grief Point Howe Sound - Pam Rocks Powell River Airport Sechelt Squamish Airport Point Atkinson Sand Heads Lightstation Tsawwassen Ferry Terminal Vancouver Int'l Airport Vancouver Harbour West Vancouver
Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Gale warning in effect

Johnstone Strait

Issued 9:30 PM PST 23 November 2020

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 9:30 PM PST 23 November 2020 Tonight and Tuesday At 9:30 p.m. PST tonight departing warm front located on a line
north-south over the Central Coast.

At 9:30 p.m. PST tonight cold front located over Queen Charlotte
Sound extending southwestward.
By 10:30 a.m. PST Tuesday departing cold front located on a line
northeast-southwest over southern Vancouver Island.

At 9:30 p.m. PST tonight low 971 mb located over the Gulf of Alaska.
By 4:00 p.m. PST Tuesday low 994 mb located over Langara.

Marine Weather Statement

Issued 9:23 PM PST 23 November 2020 A warm front over East Queen Charlotte Sound will move inland
overnight. Gale to storm force southeasterlies ahead of the front
will shift to gale to storm force westerly in its wake.

The trailing cold front will track southwards across Vancouver Island
on Tuesday. Ahead of the front, gale force southeasterlies will
develop over South Coast waters Tuesday morning and shift to strong
to gale force westerly in its wake.

The associated low over the Gulf of Alaska will track southwards
across Haida Gwaii Tuesday evening. Storm force westerlies in its
wake will generate seas 10 to 13 metres over Bowie late this evening
then spread to west coast Haida Gwaii and Dixon Entrance West
overnight. Seas will build to 8 to 10 metres over central waters on
Tuesday morning and to 6 to 8 metres over west coast Vancouver Island
on Tuesday afternoon.

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