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Johnstone Strait

Forecast

Marine Forecast

Issued 10:30 AM PDT 12 July 2025

Today Tonight and Sunday.

Strong wind warning in effect.

Wind northwest 15 to 20 knots increasing to northwest 20 to 30 this afternoon then diminishing to northwest 15 to 20 late overnight. Wind increasing to northwest 20 to 25 Sunday morning and to northwest 25 to 30 Sunday afternoon.

Periods of drizzle beginning overnight changing to scattered showers Sunday morning and ending Sunday afternoon. Fog patches forming after midnight and dissipating Sunday morning.

Extended Forecast

Issued 04:00 AM PDT 12 July 2025
Monday Wind northwest 20 to 30 knots.
Tuesday Wind northwest 15 to 25 knots.
Wednesday Wind northwest 15 to 25 knots becoming northwest 20 to 30.

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Weather Conditions

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Map of Pacific - Georgia Basin marine weather areas West Vancouver Discovery Island English Bay – 46304 Georgia Strait - 46303 Sentry Shoal - 46131 Halibut Bank - 46146 La Perouse Bank - 46206 Howe Sound - Pam Rocks Comox Airport Entrance Island Tsawwassen Ferry Terminal Sand Heads Lightstation Point Atkinson Squamish Airport Sechelt Powell River Airport Campbell River Airport Grief Point Tofino Airport Port Alberni Estevan Point Sisters Islets Nanaimo Airport Fanny Island Race Rocks Lightstation Vancouver Harbour Esquimalt Harbour Kelp Reefs Malahat Saturna Island Vancouver Int'l Airport Sheringham Point University of Victoria Victoria Gonzales Victoria Int'l Airport Ballenas Islands
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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 1:34 PM PDT 12 July 2025

'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 10:30 AM PDT 12 July 2025 Today Tonight and Sunday At 10:30 a.m. PDT today ridge located from the Alaska panhandle
to Explorer.
By 10:30 a.m. PDT Sunday ridge located from the North Coast to
Explorer.

At 10:30 a.m. PDT today frontal system located over western Bowie.
By 10:30 a.m. PDT Sunday weakening frontal system located over
the North Coast.

Marine Weather Statement

Issued 10:26 AM PDT 12 July 2025 A frontal system is approaching the northern waters today. Marginal
southerly gales may briefly develop through Northern Hecate Strait
and Dixon Entrance East this afternoon.

A ridge of high pressure will strengthen again on Sunday, generating
northwesterly gales over West Vancouver Island and westerly gales
over Central and Eastern Juan de Fuca Strait in the afternoon.

Pacific - Georgia Basin Area

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