Johnstone Strait

Forecast

Marine Forecast

Issued 10:30 AM PDT 22 October 2017

Today Tonight and Monday.

Gale warning in effect.

Wind southeast 10 to 20 knots becoming southeast 15 to 25 late overnight then increasing to southeast 25 to 35 near noon Monday.

A few showers. Risk of thunderstorms today changing to rain late overnight.

Extended Forecast

Issued 04:00 AM PDT 22 October 2017
Tuesday Wind southeast 15 to 25 knots becoming southeast 20 to 30 late in the day.
Wednesday Wind southeast 20 to 30 knots becoming northwest 20 to 30.
Thursday Wind northwest 5 to 15 knots.

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Map of Pacific - South Coast marine weather areas Tsawwassen Ferry Terminal 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 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 Sartine Island Solander Island Tofino Airport Grief Point Powell River Airport Sechelt Cape St.James Bella Bella Airport Bella Coola Airport Cathedral Point Herbert Island Point Atkinson Sand Heads Lightstation Vancouver Harbour Vancouver Int'l Airport West Vancouver Port Alberni Howe Sound - Pam Rocks Squamish Airport
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 22 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 22 October 2017 Today Tonight and Monday At 10:30 a.m. PDT today weakening low 986 mb located north of Bowie.
By 5:00 p.m. PDT today dissipating low 1002 mb located over the
Alaska panhandle.

At 4:00 a.m. PDT Monday deepening low 996 mb located southwest
of Bowie.
By 5:00 p.m. PDT Monday low 991 mb located over the Alaska
panhandle.

At 11:00 a.m. PDT today building ridge located over the South Coast.

Marine Weather Statement

Issued 10:21 AM PDT 22 October 2017 A low pressure centre north of Bowie is spreading strong to gale
force southwesterlies off the outer coast. Winds will
Ease to moderate to strong southwesterly this afternoon as the low
weakens over the Alaska Panhandle and a ridge of high pressure
Builds over the South Coast.

A deepening low will approach Bowie from the southwest tonight to
reach the Alaska Panhandle as a 991 millibar low Monday afternoon.
Ahead of the low, winds will rise to southerly gales offshore
overnight, and to storm force southerlies Monday morning over the
northern and central waters. Winds will shift to gale force
westerlies in the wake of the low then ease to strong Monday
Evening. The associated front will remain over the central
Waters Monday night with southerly gales persisting.

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