Johnstone Strait

Forecast

Marine Forecast

Issued 04:00 AM PDT 16 August 2018

Today Tonight and Friday.

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 overnight. Wind becoming northwest 20 to 30 Friday afternoon.

Chance of drizzle this morning. Fog banks dissipating near noon. Fog banks forming after midnight and dissipating Friday morning.

Extended Forecast

Issued 04:00 AM PDT 16 August 2018
Saturday Wind northwest 15 to 25 knots increasing to northwest 25 to 35 in the afternoon.
Sunday Wind northwest 10 to 20 knots increasing to northwest 20 to 25 late in the day.
Monday Wind northwest 10 to 20 knots increasing to northwest 20 to 25 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 04:00 AM PDT 16 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 4:00 AM PDT 16 August 2018 Today Tonight and Friday At 4:00 a.m. PDT today ridge located on a line northeast-southwest
over Bowie.
By 5:00 p.m. PDT today weakening ridge located on a line north-south
over Haida Gwaii.

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

Marine Weather Statement

Issued 3:46 AM PDT 16 August 2018 A ridge of high pressure along a northeast to southwest line lies
over Bowie this morning. 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.

Later today the ridge will weaken as it shifts eastward towards
Haida Gwaii and a weak low pressure system reaches northwestern
Bowie on Friday evening.

Marginal gales are also expected for eastern and central
Sections of Juan de Fuca Strait later this afternoon and tonight.

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