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Johnstone Strait


Marine Forecast

Issued 10:30 AM PDT 07 May 2021

Today Tonight and Saturday.

Wind northwest 10 to 20 knots diminishing to light late overnight then increasing to southeast 10 to 20 Saturday morning.


Extended Forecast

Issued 04:00 AM PDT 07 May 2021
Sunday Wind northwest 5 to 15 knots increasing to northwest 15 to 25 in the afternoon.
Monday Wind northwest 5 to 15 knots.
Tuesday Wind southeast 5 to 15 knots becoming northwest 10 to 20 late in the day.

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Weather Conditions

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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
Ice Conditions

There is no ice forecast issued for this area.


No watches or warnings in effect.


Technical Marine Synopsis

Issued 10:30 AM PDT 7 May 2021 Today Tonight and Saturday At 10:30 a.m. PDT today weakening low 1008 mb located northwest
of Haida Gwaii.
By 2:00 p.m. PDT today weakening low 1012 mb located near Langara.

At 11:00 p.m. PDT tonight intensifying trough located west of
Haida Gwaii.
By 2:00 p.m. PDT Saturday departing trough located on a line
north-south over Hecate Strait.

Marine Weather Statement

Issued 10:21 AM PDT 7 May 2021 A low over northwest of Haida Gwaii will move eastward today and
dissipate over the Southern Alaskan Panhandle early this afternoon.
Strong southeasterlies ahead of the low will shift to strong to gale
force northwesterly in its wake. Winds will gradually weaken this
afternoon as the low dissipates and a weak ridge builds behind the

A trough in a north to south line will move over Haida Gwaii early
Saturday morning and onto the North Coast late afternoon. Strong to
locally gale force southeast winds will develop over the northern and
central waters ahead of the trough.

Pacific - South Coast Area

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