Johnstone Strait


Marine Forecast

Issued 04:00 AM PDT 18 April 2019

Today Tonight and Friday.

Strong wind warning in effect.

Wind southeast 15 to 25 knots becoming southeast 15 this afternoon then becoming northwest 10 to 15 this evening. Wind increasing to northwest 15 to 25 late overnight then becoming northwest 20 to 30 Friday afternoon.

Rain ending Friday morning.

Extended Forecast

Issued 04:00 AM PDT 18 April 2019
Saturday Wind northwest 20 to 30 knots diminishing to northwest 5 to 15 in the afternoon.
Sunday Wind variable 5 to 15 knots increasing to southeast 20 to 30.
Monday Wind southeast 20 to 30 knots.

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Weather Conditions

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Ice Conditions

There is no ice forecast issued for this area.


Warnings (In effect)

Strong wind warning in effect

Johnstone Strait

Issued 04:00 AM PDT 18 April 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 4:00 AM PDT 18 April 2019 Today Tonight and Friday At 4:00 a.m. PDT today dissipating frontal system located on a
line north-south over northern Vancouver Island.

At 4:00 a.m. PDT today departing low 984 mb located north of Bowie.

At 10:30 a.m. PDT today ridge located on a line northeast-southwest
over northern Vancouver Island.
By 4:00 p.m. PDT Friday ridge located on a line northeast-southwest
over Haida Gwaii.

Marine Weather Statement

Issued 3:58 AM PDT 18 April 2019 A frontal system over Northern Vancouver Island will dissipate this
morning. The Parent low of the system lies just north of Bowie and
will contnue to travel northwards and away from nothern waters.

Strong to gale force southeasterly winds will ease later this
Morning for waters near Northern Vancouver Island. Gale force
southwesterly winds over northern waters will abate by this

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