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James Bay - northern half

Warnings

Forecast

Marine Forecast

Issued 05:00 AM CST 08 December 2025

Today Tonight and Tuesday.

Gale warning in effect.

Wind west 35 knots diminishing to west 20 late this evening then increasing to west 30 Tuesday evening.

Snow this morning changing to flurries and ending late this afternoon. Flurries overnight and Tuesday morning. Snow Tuesday evening. Visibility as low as 1 mile in precipitation.

Freezing spray warning in effect.

Outside the ice edge severe freezing spray becoming moderate this evening.

High today minus 5. Low tonight minus 10. High Tuesday minus 3.

Waves

Issued 05:00 AM CST 08 December 2025
Today Tonight and Tuesday. Outside the ice edge seas 3 to 4 metres subsiding to 1 to 2 late this evening then building to 3 Tuesday evening.

Extended Forecast

Issued 05:00 AM CST 08 December 2025
Wednesday Wind north 25 knots diminishing to northeast 15 in the morning and to light late in the day.
Thursday Wind light becoming northwest 15 knots.
Friday Wind northwest 15 knots veering to north 20 late in the day.

Ice Forecast

Issued 11:00 AM EST 7 December 2025 Today Tonight and Monday 1 tenth new ice except 9 tenths new ice including 4 tenths grey ice along the coast in the western section. Consolidated grey 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
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land station Land Station
Ice Conditions

Ice Forecasts

Issued 11:00 AM EST 7 December 2025 Today Tonight and Monday

Ice Edge

Ice edge estimated from Quebec near 6025N 6454W to 5915N 6734W to
Baffin Island near 6152N 6608W. Sea ice east then west of the ice
edge.

Ice Coverage

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

Warnings

Warnings (In effect)

Gale warning in effect

James Bay - northern half

Issued 05:00 AM CST 08 December 2025

'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.

Freezing spray warning in effect

James Bay - northern half

Issued 05:00 AM CST 08 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 AM EST 8 December 2025 Today Tonight and Tuesday At 1200 UTC Monday merging low 999 mb located at 55N 76W.
At 0000 UTC Tuesday low 982 mb located at 59N 72W.
By 0000 UTC Wednesday low 989 mb located at 56N 79W.

At 0000 UTC Wednesday low 985 mb located at 60N 62W.

Hudson - Hudson Bay Area

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