Trois-Rivières to Donnacona
Issued 03:00 PM EDT 22 August 2017
Tonight and Wednesday.
Strong wind warning in effect. Squall watch in effect.
Wind southwest 15 to 25 knots with gusts to 45 near thunderstorms late this afternoon and this evening. Wind becoming southwest 10 to 15 Wednesday evening.
Showers and thunderstorms ending after midnight. Visibility 1 mile or less in precipitation.
Zoom-in to make a selection
Warnings (In effect)
Trois-Rivières to DonnaconaIssued 5:10 PM EDT 22 August 2017
'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.
Watches (In effect)
Squall watch in effect
Trois-Rivières to DonnaconaIssued 4:11 PM EDT 22 August 2017 Conditions are favourable for the development of squalls with wind gusts up to 45 knots, frequent lightning and poor to very poor visibility in thunderstorms heavy at times.
The heavy thunderstorms will affect these areas this afternoon and this evening.
Mariners are advised to prepare for potential squalls. Vulnerable vessels are most at risk and should seek safe harbour if underway. Consider delaying or postponing travel in areas under the Squall Watch.
Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Squall warning ended
Trois-Rivières to DonnaconaIssued 6:05 PM EDT 22 August 2017
Technical Marine SynopsisIssued 3:00 PM EDT 22 August 2017 Tonight and Wednesday At 3:00 p.m. EDT today low 994 mb located 200 miles southeast of
By 8:00 p.m. EDT Wednesday quasi-stationary low 990 mb located
300 miles east of James Bay.
At 3:00 p.m. EDT today trough located from the low to Cornwall.
By 8:00 a.m. EDT Wednesday departing trough located from the low
to Anticosti Island.
St. Lawrence - St. Lawrence River Area
- Beauport to L'Isle-aux-Coudres
- Browns Bank
- Chaleur - Miscou
- Cornwall to Montréal
- Donnacona to Beauport
- Grand Manan
- Gulf - Magdalen - western half
- Lake Memphrémagog - northern half
- Lake Nipissing
- Lake Saint-Jean
- L'Isle-aux-Coudres to Tadoussac
- Montréal to Trois-Rivières
- Northumberland Strait - western half
- Pointe à Michel to Pointe-des-Monts
- Pointe-des-Monts to Anticosti - northern half
- Pointe-des-Monts to Anticosti - southern half
- Prescott to Cornwall
- Richelieu River and Northern Lake Champlain
- Saguenay to Tadoussac
- Tadoussac to Pointe à Michel
- Trois-Rivières to Donnacona
- Arctic - Eastern Arctic
- Arctic - Western Arctic
- Atlantic - Labrador
- Atlantic - Maritimes
- Atlantic - Newfoundland
- Great Lakes - Lake Erie and Lake Ontario
- Great Lakes - Lake Huron
- Great Lakes - Lake Superior
What we are doing
- Date modified: