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Johnstone Strait

Warnings

Forecast

Marine Forecast

Issued 04:00 PM PDT 20 May 2026

Tonight and Thursday.

Gale warning in effect.

Wind northwest 25 to 35 knots diminishing to northwest 15 to 25 after midnight then increasing to northwest 25 to 35 Thursday afternoon.

Extended Forecast

Issued 04:00 PM PDT 20 May 2026
Friday Wind northwest 10 to 20 knots increasing to northwest 20 to 30 in the afternoon.
Saturday Wind northwest 5 to 15 knots increasing to northwest 15 to 25 late in the day.
Sunday Wind variable 5 to 15 knots increasing to southeast 20 to 30 late in the day.

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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 Sheringham Point Vancouver Int'l Airport University of Victoria Victoria Gonzales Victoria Int'l Airport Ballenas Islands
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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 PDT 20 May 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 or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 4:00 PM PDT 20 May 2026 Tonight and Thursday At 4:00 p.m. PDT today ridge located on a line northeast-southwest
over Cape St. James.
By 4:00 a.m. PDT Thursday weakening ridge located from the Central
Coast to Explorer.

At 4:00 p.m. PDT today weakening frontal system located on a line
northeast-southwest over Bowie.

At 4:00 p.m. PDT today trough located west of Bowie.
By 10:30 a.m. PDT Thursday weakening trough located on a line
northeast-southwest over Haida Gwaii.

Marine Weather Statement

Issued 3:34 PM PDT 20 May 2026 Ahead of a ridge of high pressure, northwesterly gales continue over
Johnstone Strait and West Vancouver Island this evening and then ease
overnight. Winds will redevelop late Thursday afternoon.

Pacific - Georgia Basin Area

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Marine Weather for Canada

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