Johnstone Strait

Forecast

Marine Forecast

Issued 04:00 AM PDT 17 August 2017

Today Tonight and Friday.

Gale warning in effect.

Wind northwest 15 to 20 knots diminishing to northwest 5 to 15 this morning and to light this evening. Wind increasing to northwest 15 to 25 Friday morning and to northwest 25 to 35 Friday evening.

A few showers beginning this evening changing to chance of showers Friday. Fog patches dissipating this morning.

Extended Forecast

Issued 04:00 AM PDT 17 August 2017
Saturday Wind northwest 10 to 20 knots increasing to northwest 20 to 30 in the afternoon.
Sunday Wind northwest 15 knots increasing to northwest 15 to 25 late in the day.
Monday Wind northwest 10 to 20 knots.

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Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Gale warning in effect

Johnstone Strait

Issued 04:00 AM PDT 17 August 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.

Synopsis

Technical Marine Synopsis

Issued 4:00 AM PDT 17 August 2017 Today Tonight and Friday At 4:00 a.m. PDT today quasi-stationary ridge located on a line
northeast-southwest over northern Vancouver Island.

At 2:00 p.m. PDT today frontal system located on a line
northeast-southwest over Haida Gwaii.
By 11:00 p.m. PDT tonight dissipating frontal system located on
a line northeast-southwest over the Central Coast.

Marine Weather Statement

Issued 4:08 AM PDT 17 August 2017 A ridge of high pressure will remain over Northern Vancouver Island.
A frontal system will reach Bowie this morning and will move through
the North Coast during the day, reaching the Central Coast in the
evening.

Light to moderate variable winds will prevail for most of the South
Coast today. Moderate to strong westerlies will continue through
Juan de Fuca Strait.

Over the North Coast, gale force southeast winds will develop ahead
of the next frontal system today and will shift to strong west or
southwesterly in its wake.

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