Johnstone Strait


Marine Forecast

Issued 10:30 AM PDT 24 April 2018

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind northwest 10 to 20 knots increasing to northwest 20 to 30 early this evening then diminishing to northwest 10 to 20 early Wednesday morning. Wind diminishing to light near noon Wednesday then becoming southeast 5 to 15 Wednesday evening.

Extended Forecast

Issued 04:00 AM PDT 24 April 2018
Thursday Wind southeast 5 to 15 knots.
Friday Wind northwest 5 to 15 knots increasing to northwest 15 to 25.
Saturday Wind northwest 15 to 25 knots.

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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 10:30 AM PDT 24 April 2018

'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 10:30 AM PDT 24 April 2018 Today Tonight and Wednesday At 10:30 a.m. PDT today building ridge located on a line
northeast-southwest over northern Haida Gwaii.
By 5:00 p.m. PDT Wednesday quasi-stationary ridge located on a
line northeast-southwest over Bowie.

At 10:30 a.m. PDT today quasi-stationary trough located west of
Vancouver Island.

Marine Weather Statement

Issued 10:22 AM PDT 24 April 2018 A ridge of high pressure over BC Interior in combination with a
trough west of Vancouver Island had produced marginal gale force
northerly outflow winds through Howe Sound this morning. The winds
will redevelop overnight and into Wednesday morning.

A ridge of high pressure is building over the northern offshore
waters. The trough west of the Vancouver Island will intensify
tonight. Marginal gale force northerly winds will develop tonight
And Wednesday morning over South Explorer, west coast Vancouver
Island and Queen Charlotte Sound.

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