Johnstone Strait

Forecast

Marine Forecast

Issued 10:30 AM PDT 20 October 2017

Today Tonight and Saturday.

Gale warning in effect.

Wind northwest 5 to 15 knots increasing to southeast 15 to 25 this evening and to southeast 30 to 40 early Saturday morning. Wind diminishing to southeast 20 to 30 Saturday afternoon.

A few showers changing to rain late overnight.

Extended Forecast

Issued 04:00 AM PDT 20 October 2017
Sunday Wind southwest 15 to 25 knots backing to southeast 15 to 25 late in the day.
Monday Wind southeast 15 to 25 knots increasing to southeast 30 to 40 late in the day.
Tuesday Wind southeast 20 to 30 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 10:30 AM PDT 20 October 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 10:30 AM PDT 20 October 2017 Today Tonight and Saturday At 10:30 a.m. PDT today ridge located west of Bowie.
By 4:00 p.m. PDT today departing ridge located on a line north-south
over the Coast Mountains.

At 9:30 p.m. PDT tonight frontal system located off the offshore
waters.
By 4:00 p.m. PDT Saturday weakening frontal system located on a
line north-south over the North Coast.

Marine Weather Statement

Issued 10:09 AM PDT 20 October 2017 An approaching frontal system will track across Haida Gwaii on
Saturday and weaken over the North Coast late in the afternoon.
Ahead of the front, southeast gales will develop over the offshore
waters this evening then spread to all outer waters overnight and the
inner South Coast early Saturday morning. In its wake the winds will
shift to strong to gale force southwesterly late Saturday.

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