Johnstone Strait


Marine Forecast

Issued 09:30 PM PDT 22 May 2017

Tonight and Tuesday.

Gale warning in effect.

Wind northwest 20 to 30 knots diminishing to northwest 5 to 15 late overnight then increasing to northwest 20 to 30 late Tuesday morning. Wind increasing to northwest 35 to 45 Tuesday afternoon.

A few showers beginning late Tuesday morning.

Extended Forecast

Issued 04:00 PM PDT 22 May 2017
Wednesday Wind northwest 30 to 40 knots diminishing to northwest 20 to 30 in the morning.
Thursday Wind northwest 15 to 25 knots.
Friday Wind northwest 15 to 25 knots diminishing to northwest 5 to 15.

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Ice Conditions

There is no ice forecast issued for this area.


Warnings (In effect)

Gale warning in effect

Johnstone Strait

Issued 9:30 PM PDT 22 May 2017

'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.


Technical Marine Synopsis

Issued 9:30 PM PDT 22 May 2017 Tonight and Tuesday At 9:30 p.m. PDT tonight ridge located over Cape Scott extending
By 4:00 a.m. PDT Tuesday weakening ridge located over central
Vancouver Island.

At 9:30 p.m. PDT tonight frontal system located over Prince Rupert
extending southwestward.
By 4:00 p.m. PDT Tuesday frontal system located on a line
north-south over the Lower Mainland.

Marine Weather Statement

Issued 9:05 PM PDT 22 May 2017 A stalled frontal system in a northeast to southwest line from Prince
Rupert to Southern Bowie will remain in place through this evening.

The front will eventually move across the BC coast on
Tuesday, pushed by a strong upper trough. A strong ridge of high
pressure will rebuild in the wake of the front and generate gale to
locally storm force northwesterly winds over the BC waters on

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