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Johnstone Strait


Marine Forecast

Issued 09:30 PM PDT 21 September 2019

Tonight and Sunday.

Strong wind warning in effect.

Wind southeast 20 to 30 knots diminishing to southeast 15 near midnight then becoming northwest 15 early Sunday morning. Wind increasing to northwest 25 to 30 late Sunday morning then diminishing to northwest 15 to 20 early Sunday evening.

Rain changing to showers Sunday morning. Visibility 1 mile or less in precipitation.

Extended Forecast

Issued 04:00 PM PDT 21 September 2019
Monday Wind southeast 5 to 15 knots increasing to southeast 25 to 35 in the morning then diminishing to southeast 15 late in the day.
Tuesday Wind light increasing to northwest 15 to 25 knots.
Wednesday Wind light increasing to northwest 15 to 25 knots 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 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.


Warnings (In effect)

Strong wind warning in effect

Johnstone Strait

Issued 9:30 PM PDT 21 September 2019

'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.


Technical Marine Synopsis

Issued 9:30 PM PDT 21 September 2019 Tonight and Sunday At 9:30 p.m. PDT tonight frontal system located on a line
northeast-southwest over central Vancouver Island.
By 10:30 a.m. PDT Sunday departing frontal system located on a
line northeast-southwest over the Lower Mainland.

At 4:00 a.m. PDT Sunday ridge located west of the offshore waters.
By 4:00 p.m. PDT Sunday ridge located over Explorer extending

Marine Weather Statement

Issued 9:29 PM PDT 21 September 2019 A frontal system is currently over Central Vancouver Island.

Ahead of the front, strong to marginal gale force southeasterlies
will persist over the southern waters this evening. In the wake of
the front, winds will shift to westerly and ease to moderate to

Gale force northwesterlies will develop over West Vancouver Island
Sunday morning as a ridge of high pressure builds offshore.

Pacific - South Coast Area

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