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Johnstone Strait

Warnings

Forecast

Marine Forecast

Issued 04:00 PM PST 12 December 2025

Tonight and Saturday.

Gale warning in effect.

Wind southeast 10 to 20 knots increasing to southeast 20 to 30 near midnight then becoming southeast 25 to 35 Saturday morning.

Rain changing to showers Saturday afternoon.

Extended Forecast

Issued 04:00 PM PST 12 December 2025
Sunday Wind southwest 10 to 20 knots increasing to southeast 25 to 35 in the afternoon.
Monday Wind southeast 30 to 40 knots diminishing to southeast 15 late in the day.
Tuesday Wind southeast 25 to 35 knots diminishing to northwest 10 to 20.

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Map of Pacific - South Coast marine weather areas Vancouver Harbour Sechelt East Dellwood - 46207 Squamish Airport Powell River Airport Sand Heads Lightstation Discovery Island Georgia Strait - 46303 Vancouver Int'l Airport Cape St.James Tsawwassen Ferry Terminal English Bay – 46304 Point Atkinson Herbert Island Bella Bella Airport West Vancouver Bella Coola Airport Cathedral Point Campbell River Airport South Nomad - 46036 Malahat Sentry Shoal - 46131 Race Rocks Lightstation Kelp Reefs Esquimalt Harbour Saturna Island South Brooks - 46132 Sheringham Point University of Victoria Halibut Bank - 46146 Victoria Gonzales Victoria Int'l Airport Ballenas Islands South Moresby - 46147 Estevan Point Howe Sound - Pam Rocks Grief Point La Perouse Bank - 46206 Tofino Airport Solander Island Sartine Island Port Alberni West Sea Otter - 46204 Comox Airport Sisters Islets Port Hardy Airport South Hecate Strait - 46185 Nanaimo Airport Fanny Island Entrance Island
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land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Gale warning in effect

Johnstone Strait

Issued 4:00 PM PST 12 December 2025

'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 4:00 PM PST 12 December 2025 Tonight and Saturday At 4:00 p.m. PST today warm front located from Explorer to Cape
Scott.
By 10:00 a.m. PST Saturday warm front located on a line east-west
over northern Haida Gwaii.

At 4:00 p.m. PST today building ridge located over northern BC
interior.
By 4:00 p.m. PST Saturday weakening ridge located over northern
BC interior.

At 1:00 a.m. PST Saturday low 999 mb located over southwestern
Bowie.
By 1:00 p.m. PST Saturday departing low 988 mb located north
of Langara.

At 4:00 p.m. PST Saturday trough located southwest of Explorer.
By 11:00 p.m. PST Saturday trough located over Explorer.

Marine Weather Statement

Issued 3:35 PM PST 12 December 2025 A warm front extending through Explorer will move northward to lie
over Southern Bowie this evening. Ahead of this front, strong to gale
force easterlies will continue over Bowie until this evening.

An Arctic ridge of high pressure will also strengthen over the
British Columbia Interior, bringing northeast outflow gales
To the North Coast inlets today and Saturday and also over the
Central Coast starting tonight.

A low will form over Southern Bowie Saturday morning and track
northeastward into the Southern Alaska Panhandle by Saturday evening.
To the south and east of the low, south to southwest gales will
develop across the northern and central waters on Saturday.

Pacific - South Coast Area

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Marine Weather for Canada

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