West Coast Haida Gwaii - northern half


Marine Forecast

Issued 09:30 PM PST 11 December 2018

Tonight and Wednesday.

Storm warning in effect.

Wind westerly 35 to 45 knots diminishing to westerly 25 to 35 near midnight then backing to southerly 25 to 35 late overnight. Wind increasing to southeast 40 to 50 Wednesday morning then becoming southwest 35 to 45 early Wednesday afternoon.

Showers with a risk of thunderstorms late this evening changing to rain Wednesday morning.


Issued 04:00 PM PST 11 December 2018
Today Tonight and Wednesday. Seas 5 to 7 metres building to 6 to 8 early this evening and to 9 Wednesday evening.

Extended Forecast

Issued 04:00 PM PST 11 December 2018
Thursday Wind west 30 knots diminishing to south 10 in the morning then increasing to east 40 in the afternoon.
Friday Wind east 40 knots veering to south 40.
Saturday Wind southeast 50 knots diminishing to south 15 late in the day.

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Ice Conditions

There is no ice forecast issued for this area.


Warnings (In effect)

Storm warning in effect

West Coast Haida Gwaii - northern half

Issued 9:30 PM PST 11 December 2018

'Storm' force winds of 48 to 63 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 9:30 PM PST 11 December 2018 Tonight and Wednesday At 9:30 p.m. PST tonight ridge located over the offshore waters.
By 4:00 a.m. PST Wednesday weakening ridge located on a line
north-south over northern Vancouver Island.

At 7:00 a.m. PST Wednesday frontal system located over Bowie.
By 9:30 p.m. PST Wednesday departing frontal system located over
southern Vancouver Island.

At 4:00 a.m. PST Wednesday low 970 mb located west of Bowie.
By 9:30 p.m. PST Wednesday quasi-stationary low 970 mb located
north of Bowie.

Marine Weather Statement

Issued 9:21 PM PST 11 December 2018 A ridge of high pressure over the offshore waters will weaken
Through the night as it quickly approaches the BC coast by Wednesday
morning. Widespread gale force westerly winds will continue across
most marine regions ahead of the ridge then ease to generally strong
westerly winds later tonight.

The next frontal wave moves over the offshore waters on Wednesday
morning and will track east through the South Coast by evening.

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