Johnstone Strait

Forecast

Marine Forecast

Issued 04:00 AM PDT 17 October 2017

Today Tonight and Wednesday.

Gale warning in effect.

Wind northwest 30 to 40 knots diminishing to northwest 15 to 25 this morning and to light late this afternoon. Wind increasing to southeast 15 this evening and to southeast 25 to 35 near midnight. Wind increasing to southeast 35 to 45 late overnight then diminishing to southeast 20 to 30 Wednesday morning. Wind diminishing to southeast 15 Wednesday afternoon.

Rain at times heavy ending early this morning. Rain at times heavy beginning near midnight.

Extended Forecast

Issued 04:00 AM PDT 17 October 2017
Thursday Wind southeast 15 to 25 knots diminishing to southeast 10 to 15 in the afternoon.
Friday Wind northwest 10 to 15 knots.
Saturday Wind southeast 25 to 35 knots diminishing to southeast 15 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 05:48 AM PDT 17 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 4:00 AM PDT 17 October 2017 Today Tonight and Wednesday At 4:00 a.m. PDT today cold front located on a line
northeast-southwest over central Vancouver Island.
By 9:00 a.m. PDT today cold front located on a line
northeast-southwest over the Lower Mainland.

At 4:00 p.m. PDT today frontal system located west of the offshore
waters.
By 4:00 a.m. PDT Wednesday frontal system located on a line
north-south over Hecate Strait.

At 4:00 a.m. PDT Wednesday cold front located on a line
northeast-southwest over northern Vancouver Island.
By 4:00 p.m. PDT Wednesday cold front located on a line
northeast-southwest over southern Vancouver Island.

Marine Weather Statement

Issued 3:45 AM PDT 17 October 2017 A cold front over Central Vancouver Island will move across the
South Coast early this morning. Strong to gale force southerly winds
ahead of the front will shift to strong to gale force
Northwesterlies in the wake of the front.

Another frontal system will approach the northern and central waters
from offshore late today and cross the North and Central Coasts
Wednesday morning. Winds will rise quickly to storm force
southeasterlies ahead of the system tonight. Winds will veer to
southwest gales in its wake.

Gale to local storm force southeasterlies will also develop over the
South Coast overnight or Wednesday morning as the system approaches.
As the system moves inland late Wednesday, winds will become strong
south or southwesterlies in its wake.

Seas will build to near 6 metres over the northern and central
Waters tonight, and to near 9 metres over the offshore waters
Wednesday evening.

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