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Johnstone Strait

Warnings

Forecast

Marine Forecast

Issued 09:30 PM PDT 18 August 2026

Tonight and Wednesday.

Gale warning in effect.

Wind northwest 20 to 30 knots diminishing to northwest 15 to 20 near midnight then increasing to northwest 25 to 35 late Wednesday afternoon. Wind diminishing to northwest 10 to 20 Wednesday evening.

Periods of drizzle overnight and Wednesday morning. Fog banks forming late this evening and dissipating Wednesday morning.

Extended Forecast

Issued 04:00 PM PDT 18 August 2026
Thursday Wind northwest 25 to 35 knots becoming northwest 20 to 30 in the morning.
Friday Wind light increasing to northwest 10 to 20 knots.
Saturday Wind light increasing to northwest 10 to 20 knots.

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Map of Pacific - Georgia Basin marine weather areas Discovery Island La Perouse Bank - 46206 Georgia Strait - 46303 Sentry Shoal - 46131 Halibut Bank - 46146 English Bay – 46304 Powell River Airport Entrance Island Fanny Island Vancouver Int'l Airport Tsawwassen Ferry Terminal Sand Heads Lightstation Point Atkinson Squamish Airport Sechelt Comox Airport Howe Sound - Pam Rocks Grief Point Tofino Airport Port Alberni Estevan Point Sisters Islets Nanaimo Airport Saturna Island West Vancouver Esquimalt Harbour Kelp Reefs Race Rocks Lightstation Sheringham Point University of Victoria Victoria Gonzales Victoria Int'l Airport Vancouver Harbour Ballenas Islands Campbell River Airport
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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 9:30 PM PDT 18 August 2026

'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.

Synopsis

Technical Marine Synopsis

Issued 9:30 PM PDT 18 August 2026 Tonight and Wednesday At 9:30 p.m. PDT tonight quasi-stationary ridge located on a line
northeast-southwest over Bowie.

Marine Weather Statement

Issued 9:09 PM PDT 18 August 2026 Ahead of a ridge of high pressure, gale force northwesterlies will
develop Wednesday afternoon over west coast Vancouver Island and
Then ease Thursday morning.

Pacific - Georgia Basin Area

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Marine Weather for Canada

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