Johnstone Strait


Marine Forecast

Issued 04:00 PM PST 10 December 2016

Tonight and Sunday

Gale warning in effect.

Wind southeast 15 to 25 knots except northeasterly outflow 40 near the mainland inlets. Wind becoming southeast 10 to 15 near midnight except northeasterly outflow 40 near the mainland inlets.

Periods of snow or rain changing to chance of flurries or showers overnight and Sunday.

Temperatures near zero.

Extended Forecast

Issued 04:00 PM PST 10 December 2016
Monday Wind northeasterly outflow 35 to 45 knots.
Tuesday Wind northeasterly outflow 30 to 40 knots.
Wednesday Wind northeasterly outflow 20 to 30 knots.

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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 4:00 PM PST 10 December 2016

'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 4:00 PM PST 10 December 2016 Tonight and Sunday At 4:00 p.m. PST today quasi-stationary ridge located over BC

At 4:00 p.m. PST today low 1000 mb located off Vancouver Island.
By 4:00 p.m. PST Sunday dissipating low 1008 mb located over the
Lower Mainland.

Marine Weather Statement

Issued 3:53 PM PST 10 December 2016 An Arctic ridge of high pressure will remain over the British
Columbia Interior and will tend to build over the northern and
Central Interior tonight and Sunday. Meanwhile, a weak area of low
pressure off the west coast of Vancouver Island will continue to
weaken tonight.

Gale force outflow winds through the mainland inlets will strengthen
to storm force early Sunday over the north and Central Coast.
Cold temperatures well below freezing will produce moderate freezing
spray through Douglas Channel and Portland Inlet. Marginal gale force
winds near the low centre will diminish early this evening.

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