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James Bay - southern half

Warnings

Forecast

Marine Forecast

Issued 05:00 PM CST 05 December 2025

Tonight and Saturday.

Wind west 20 knots increasing to west 30 Saturday evening.

Flurries.

Freezing spray warning in effect.

Moderate freezing spray beginning this evening becoming severe Saturday morning.

Temperatures minus 7 falling to minus 16 near noon Saturday.

Waves

Issued 05:00 AM CST 05 December 2025
Today Tonight and Saturday. Seas 2 metres building to 3 Saturday evening.

Extended Forecast

Issued 05:00 PM CST 05 December 2025
Sunday Wind west 25 knots.
Monday Wind west 25 knots.
Tuesday Wind light becoming west 10 to 15 knots late in the day.

Ice Forecast

Issued 11:00 AM EST 5 December 2025 Today Tonight and Saturday 4 tenths grey ice including 1 tenth grey-white ice except 9 tenths grey ice including 1 tenth grey-white ice in the western section. Consolidated grey-white ice along parts of the coasts. 

[ Canadian Ice Service ]

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Map of Hudson - Hudson Bay marine weather areas Akulivik Airport Coral Harbour Airport Eastmain Airport Inukjuak Airport La Grande Rivière Airport Moosonee Airport Peawanuck Airport Fort Severn Airport Waskaganish Airport Churchill Airport Wemindji Airport Baker Lake Airport Rankin Inlet Airport Sanikiluaq Airport Whale Cove Airport Kinngait (Cape Dorset Airport) Iqaluit Airport Wager Bay Kimmirut Airport Cape Kakkiviak Tasiujaq Airport Salluit Airport Quaqtaq Airport Kuujjuaq Airport Kangiqsualujjuaq Airport Kangirsuk Airport Kangiqsujuaq Airport Kuujjuarapik Airport Puvirnituq Airport Aupaluk Airport Chesterfield Inlet Airport Ivujivik Airport Umiujaq Airport Arviat Airport
Legend:
buoy Buoy
land station Land Station
Ice Conditions

Ice Forecasts

Issued 11:00 AM EST 5 December 2025 Today Tonight and Saturday

Ice Edge

Ice edge estimated from Quebec near 6025N 6454W to 5917N 6657W to
5931N 6815W to 6115N 6915W to 6215N 6924W to Baffin Island near
6156N 6636W. Sea ice south then north of the ice edge.

Ice Coverage

4 tenths grey ice including 1 tenth grey-white ice except 9 tenths
grey ice including 1 tenth grey-white ice in the western section.
Consolidated grey-white ice along parts of the coasts.

Warnings

Warnings (In effect)

Freezing spray warning in effect

James Bay - southern half

Issued 5:00 PM CST 05 December 2025

Moderate or severe freezing spray is 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 4:45 PM EST 5 December 2025 Tonight and Saturday At 0000 UTC Saturday departing low 992 mb located at 64N 80W.

At 0000 UTC Saturday low 993 mb located at 58N 89W.
By 0000 UTC Sunday low 989 mb located at 56N 79W.

At 0000 UTC Saturday quasi-stationary trough located from 60N 60W
to 67N 67W.

Hudson - Hudson Bay Area

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Marine Weather for Canada

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