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Johnstone Strait

Forecast

Marine Forecast

Issued 04:00 PM PDT 23 September 2020

Tonight and Thursday.

Strong wind warning in effect.

Wind southeast 15 to 25 knots tonight and Thursday.

Showers with a risk of thunderstorms.

Extended Forecast

Issued 04:00 PM PDT 23 September 2020
Friday Wind east 20 to 30 knots becoming northwest 15 to 25 in the morning then diminishing to light late in the day.
Saturday Wind southeast 15 knots increasing to southeast 25 late in the day.
Sunday Wind southeast 25 to 35 knots diminishing to northwest 15 to 25 late in the day.

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Weather Conditions

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Map of Pacific - South Coast marine weather areas South Nomad - 46036 Sentry Shoal - 46131 South Brooks - 46132 Halibut Bank - 46146 South Moresby - 46147 South Hecate Strait - 46185 West Sea Otter - 46204 La Perouse Bank - 46206 East Dellwood - 46207 Georgia Strait - 46303 English Bay - 46304 Discovery Island Esquimalt Harbour Kelp Reefs Malahat Race Rocks Lightstation Saturna Island Sheringham Point University of Victoria Victoria Gonzales Victoria Int'l Airport Ballenas Islands Campbell River Airport Comox Airport Entrance Island Fanny Island Nanaimo Airport Port Hardy Airport Sisters Islets Estevan Point Port Alberni Sartine Island Solander Island Tofino Airport Grief Point Howe Sound - Pam Rocks Powell River Airport Sechelt Squamish Airport Cape St.James Bella Bella Airport Bella Coola Airport Cathedral Point Herbert Island Point Atkinson Sand Heads Lightstation Tsawwassen Ferry Terminal Vancouver Int'l Airport Vancouver Harbour West Vancouver
Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Strong wind warning in effect

Johnstone Strait

Issued 4:00 PM PDT 23 September 2020

'Strong' winds of 20 to 33 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.

Synopsis

Technical Marine Synopsis

Issued 4:00 PM PDT 23 September 2020 Tonight and Thursday At 4:00 p.m. PDT today cold front located on a line north-south
over the South Coast.
By 8:00 p.m. PDT tonight departing cold front located over the
Lower Mainland.

At 4:00 p.m. PDT today low 982 mb located west of Bowie.
By 4:00 p.m. PDT Thursday weakening low 988 mb located north
of Bowie.

At 10:00 p.m. PDT Thursday deepening low 996 mb located over
southern Explorer.

Marine Weather Statement

Issued 3:50 PM PDT 23 September 2020 A cold front over the South Coast will move inland late this
afternoon. A 982 millibar low west of Bowie will move northeastward
to the west of the Alaska Panhandle Thursday.

Strong to gale force southeasterlies east of the front will ease
To moderate to strong southerlies late this afternoon. Strong
southwesterlies offshore will rise to gale force tonight as the low
moves northeastward then ease to moderate to strong Thursday
afternoon.

A developing low is forecast to approach Vancouver Island Thursday
night and Friday morning. Ahead of the low, southeast gales are
forecast to develop over the southern waters Thursday night.

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