James Bay - southern half


Marine Forecast

Issued 10:41 AM CDT 19 August 2018

Today Tonight and Monday.

Wind south 25 knots with gusts to 35 near thunderstorms. Wind becoming northwest 25 early this evening then diminishing to northwest 15 late this evening. Wind diminishing to light early Monday morning.

Showers and thunderstorms at times heavy beginning near noon and ending near midnight. Risk of thunderstorms this evening.


Issued 05:00 AM CDT 19 August 2018
Today Tonight and Monday. Seas 1 to 2 metres subsiding to 1 or less near noon Monday.

Extended Forecast

Issued 05:00 AM CDT 19 August 2018
Tuesday Wind light becoming north 15 knots in the afternoon.
Wednesday Wind north 25 knots diminishing to light.
Thursday Wind light.

Ice Forecast

Issued 11:00 AM EDT 19 August 2018 Today Tonight and Monday Ice free. 

[ Canadian Ice Service ]

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Ice Conditions

Ice Forecasts

Issued 11:00 AM EDT 19 August 2018 Today Tonight and Monday

Ice Edge

First ice edge estimated from Quebec near 6215N 7810W to 6215N 7910W
to 6045N 7940W to Quebec near 6025N 7745W. Sea ice east of the ice

Second ice edge estimated from Southampton Island near 6450N 8245W
to Baffin Island near 6450N 7810W. Sea ice north of the ice edge.

Third ice edge estimated from Nunavut near 6610N 8440W to
Southampton Island near 6555N 8530W. Sea ice east of the ice edge.

Ice Coverage

Ice free.


Warnings (In effect)

Squall warning in effect

James Bay

Issued 1:09 PM EDT 19 August 2018 Squalls with wind gusts up to 35 knots and poor to very poor visibility in thunderstorms heavy at times are expected or occurring in the area.

Thunderstorms with wind gusts up to 35 knots are expected this afternoon and early this evening. Thunderstorms will weaken or exit the area by the late evening hours.

Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately. Consider delaying or postponing travel in areas under the squall warning.

Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.


Technical Marine Synopsis

Issued 4:45 AM EDT 19 August 2018 Today Tonight and Monday At 1200 UTC Sunday deepening low 993 mb located near Southampton
By 0000 UTC Tuesday low 983 mb located at 64N 64W.

At 1200 UTC Sunday departing cold front located over 57N 79W
extending southwestward.

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