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Johnstone Strait

Warnings

Forecast

Marine Forecast

Issued 04:00 AM PDT 22 September 2023

Today Tonight and Saturday.

Strong wind warning in effect.

Wind light becoming southeast 5 to 15 knots early this morning then becoming light late this afternoon. Wind increasing to southeast 5 to 15 overnight and to southeast 15 to 25 near noon Saturday. Wind diminishing to variable 5 to 15 Saturday afternoon then becoming southeast 5 to 15 Saturday evening.

Showers Saturday.

Extended Forecast

Issued 04:00 AM PDT 22 September 2023
Sunday Wind southeast 10 to 20 knots increasing to southeast 20 to 30 in the morning and to southeast 30 to 40 late in the day.
Monday Wind southeast 30 to 40 knots.
Tuesday Wind southeast 30 to 40 knots.

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Map of Pacific - South Coast marine weather areas South Nomad - 46036 Sentry Shoal - 46131 South Brooks - 46132 Halibut Bank - 46146 South Moresby - 46147 South Hecate Strait - 46185 West Sea Otter - 46204 La Perouse Bank - 46206 East Dellwood - 46207 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 Port Hardy Airport Sisters Islets Estevan Point Port Alberni Sartine Island Solander Island Tofino Airport Grief Point Howe Sound - Pam Rocks Powell River Airport Sechelt Squamish Airport Cape St.James Bella Bella Airport Bella Coola Airport Cathedral Point Herbert Island Point Atkinson Sand Heads Lightstation Tsawwassen Ferry Terminal Vancouver Int'l Airport Vancouver Harbour West Vancouver
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Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Strong wind warning in effect

Johnstone Strait

Issued 04:00 AM PDT 22 September 2023

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. 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 4:00 AM PDT 22 September 2023 Today Tonight and Saturday At 4:00 a.m. PDT today ridge located over Vancouver Island.
By 4:00 p.m. PDT today weakening ridge located over the Lower
Mainland.

At 4:00 a.m. PDT today cold front located on a line
northeast-southwest over Haida Gwaii.
By 11:00 a.m. PDT today weakening cold front located from Hecate
Strait to Explorer.

At 4:00 p.m. PDT today trough located from the Central Coast
to Explorer.
By 4:00 a.m. PDT Saturday trough located from Cape Scott to
Explorer.

Marine Weather Statement

Issued 4:05 AM PDT 22 September 2023 A cold front over Haida Gwaii will move eastward and reach Hecate
Strait later this morning then weaken as it progresses into central
waters in the afternoon. Ahead of the front, strong to gale force
southerly winds have developed over Northern Haida Gwaii and Dixon
Entrance East. The winds will ease to strong southerly this morning
as the front moves over Southern Hecate Strait and rapidly weakens.
In its wake, winds will ease to moderate to strong westerlies today.

As the front dissipate this evening, a trough will form from Central
Coast to Explorer. The trough will continue to develop to a low over
Southeastern Explorer overnight. The low centre is expected to cross
Vancouver Island Saturday near noon. Gale force winds are expected to
develop near the low on Saturday morning then becoming strong
southerly wind over the Strait of Georgia as the low cross the island
and weakens.

A deep low pressure system is expected to spread gale to storm force
winds across the BC waters Sunday night through Monday.

Pacific - South Coast Area

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Marine Weather for Canada

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