Johnstone Strait
Forecast
Marine Forecast
Issued 09:30 PM PDT 09 July 2025
Tonight and Thursday.
Wind northwest 15 to 20 knots diminishing to northwest 10 to 15 after midnight then increasing to northwest 15 to 20 Thursday afternoon.
Scattered showers ending Thursday morning. Fog patches forming after midnight and dissipating Thursday morning.
Extended Forecast
Issued 04:00 PM PDT 09 July 2025
Friday
Wind northwest 10 knots increasing to northwest
15 to 25 in the afternoon.
Saturday
Wind northwest 10 to 20 knots increasing to
northwest 25 late in the day.
Sunday
Wind northwest 10 to 20 knots increasing to
northwest 25 late in the day.
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Weather Conditions
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Ice Conditions
There is no ice forecast issued for this area.
Warnings
No watches or warnings in effect.
Synopsis
Technical Marine Synopsis
Issued 9:30 PM PDT 9 July 2025 Tonight and Thursday At 9:30 p.m. PDT tonight trough located on a linenorthwest-southeast over the offshore waters.
By 10:30 a.m. PDT Thursday weakening trough located off Vancouver
Island.
At 10:30 a.m. PDT Thursday quasi-stationary ridge located on a
line north-south over Explorer.
At 10:30 a.m. PDT Thursday frontal system located over northern
Bowie.
By 4:00 p.m. PDT Thursday frontal system located on a line
northeast-southwest over northern Haida Gwaii.
Marine Weather Statement
Issued 9:22 PM PDT 9 July 2025 A weak ridge of high pressure remains over Southern Explorer tonight,generating gale force westerly winds through central and eastern
sections of Juan de Fuca Strait. These winds will weaken on Thursday
morning.
A frontal system is approaching the North Coast on Thursday.
This will bring southeasterly gales to northern waters.
Pacific - South Coast Area
- Bowie - southern half
- Central Coast from McInnes Island to Pine Island
- Explorer - northwestern half
- Explorer - southeastern half
- Haro Strait
- Hecate Strait - southern half
- Howe Sound
- Johnstone Strait
- Juan de Fuca Strait - central strait
- Juan de Fuca Strait - east entrance
- Juan de Fuca Strait - west entrance
- Queen Charlotte Sound - eastern half
- Queen Charlotte Sound - western half
- Queen Charlotte Strait
- Strait of Georgia - north of Nanaimo
- Strait of Georgia - south of Nanaimo
- West Coast Haida Gwaii - southern half
- West Coast Vancouver Island North
- West Coast Vancouver Island South
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