Johnstone Strait


Marine Forecast

Issued 09:30 PM PDT 25 June 2017

Tonight and Monday.

Gale warning in effect.

Wind northwest 30 to 40 knots diminishing to northwest 20 to 30 early Monday morning then increasing to northwest 30 to 40 near noon Monday.

Extended Forecast

Issued 04:00 PM PDT 25 June 2017
Tuesday Wind northwest 25 to 35 knots.
Wednesday Wind northwest 15 to 25 knots increasing to northwest 30 late in the day.
Thursday Wind northwest 15 knots increasing to northwest 25 late in the day.

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Weather Conditions

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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 25 June 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 25 June 2017 Tonight and Monday At 9:30 p.m. PDT tonight quasi-stationary trough located over
BC interior.

At 9:30 p.m. PDT tonight building ridge located over the offshore

Marine Weather Statement

Issued 9:21 PM PDT 25 June 2017 A trough of low pressure will remain over the BC Interior while
A ridge of high pressure builds over the offshore waters.

Gale force northwest winds off Central Vancouver Island will
Prevail tonight and Monday. Strong to gale force westerlies over
Juan de Fuca Strait and Johnstone Strait will ease Monday morning
And redevelop Monday afternoon. Elsewhere, northwest winds will
increase tonight as the ridge builds.

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