Johnstone Strait


Marine Forecast

Issued 04:00 AM PST 17 December 2017

Today Tonight and Monday.

Wind southeast 15 to 25 knots diminishing to southeast 10 to 15 early this afternoon then becoming northwest 5 to 15 early this evening. Wind becoming light Monday morning then becoming southeast 5 to 15 Monday afternoon.

Rain changing to chance of showers overnight and Monday.

Extended Forecast

Issued 04:00 AM PST 17 December 2017
Tuesday Wind southeast 10 to 15 knots increasing to northwest 20 to 30 in the morning.
Wednesday Wind northwest 25 to 35 knots diminishing to northwest 10 to 20.
Thursday Wind southeast 25 to 35 knots becoming north 20 to 30 late in the day.

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Weather Conditions

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Map of Pacific - Georgia Basin marine weather areas Tsawwassen Ferry Terminal Sentry Shoal - 46131 Halibut Bank - 46146 La Perouse Bank - 46206 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 Sisters Islets Estevan Point Tofino Airport Grief Point Powell River Airport Sechelt Point Atkinson Sand Heads Lightstation Vancouver Harbour Vancouver Int'l Airport West Vancouver Port Alberni Howe Sound - Pam Rocks Squamish Airport
Ice Conditions

There is no ice forecast issued for this area.


No watches or warnings in effect.


Technical Marine Synopsis

Issued 4:00 AM PST 17 December 2017 Today Tonight and Monday At 4:00 a.m. PST today frontal system located west of Explorer.
By 4:00 p.m. PST today frontal system located over Explorer.

At 9:30 a.m. PST today low 995 mb located over the Gulf of Alaska.
By 9:30 p.m. PST tonight weakening low 1000 mb located over the
Gulf of Alaska.

Marine Weather Statement

Issued 3:51 AM PST 17 December 2017 A low pressure system will develop over the Gulf of Alaska this
morning. The system will remain near the place during the day and
then weaken this evening. Marginal gale force westerlies will
Prevail over parts of northern waters. The winds will become
Moderate to strong westerlies tonight as the system weakens.

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