Johnstone Strait

Forecast

Marine Forecast

Issued 10:30 AM PDT 15 August 2018

Today Tonight and Thursday.

Gale warning in effect.

Wind northwest 15 to 25 knots increasing to northwest 25 to 35 late this afternoon then diminishing to northwest 15 to 25 late overnight. Wind increasing to northwest 25 to 35 Thursday afternoon.

Chance of drizzle late this morning. Chance of drizzle overnight and Thursday morning. Fog banks dissipating near noon. Fog banks forming near midnight and dissipating near noon Thursday.

Extended Forecast

Issued 04:00 AM PDT 15 August 2018
Friday Wind northwest 15 to 25 knots increasing to northwest 25 to 35 in the afternoon.
Saturday Wind northwest 15 to 25 knots increasing to northwest 25 to 35 late in the day.
Sunday Wind northwest 10 to 20 knots increasing to northwest 20 to 30 late in the day.

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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 10:30 AM PDT 15 August 2018

'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 10:30 AM PDT 15 August 2018 Today Tonight and Thursday At 10:30 a.m. PDT today ridge located on a line northeast-southwest
over Bowie.
By 5:00 p.m. PDT Thursday weakening ridge located on a line
north-south over Haida Gwaii.

At 5:00 p.m. PDT Thursday approaching low 1018 mb located west
of Bowie.

Marine Weather Statement

Issued 10:18 AM PDT 15 August 2018 A ridge of high pressure will build along a northeast to southwest
line over Northwestern Bowie today. Moderate to strong
northwesterlies will prevail over most BC waters with marginal gales
expected off the northwestern coast of Vancouver Island and through
Johnstone Strait.

On Thursday, the ridge will weaken as it shifts eastward towards
Haida Gwaii and a weak low pressure system reaches Northwestern
Bowie.

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