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Asia - Pacific


Rang-Douze-Sud, NB

Alerts in Effect

Tropical Cyclone Information Statement

Issued at 14:40 Tuesday 04 August 2020

For Tropical Storm Isaias.

The next information statement will be issued by 8:00 p.m. EDT today.

1. Summary of basic information at 2:00 p.m. EDT.

Location: 40.6 North 75.3 West.

About 130 kilometres west of New York City.

Maximum sustained winds: 100 kilometres per hour.

Present movement: north-northeast at 55 kilometres per hour.

Minimum central pressure: 995 millibars.

2. Public weather impacts and warnings summary.

Tropical Storm Isaias will continue to approach Quebec and New Brunswick through New England tonight while making transition to a post-tropical storm. Heavy rainfall can be expected over southern Quebec while gusty winds will develop over eastern parts of Quebec and New Brunswick.

a. Wind.

Southeasterly winds gusting to 50 km/h are likely over New Brunswick and parts of Quebec including the Eastern Townships, Quebec City and areas along the St. Lawrence River tonight. As the low moves northward through the Saguenay-Lac St-Jean area Wednesday, expect warm and humid southerly winds across the region. New Brunswick and the Gaspe Peninsula could see gusts up to 70 km/h Wednesday afternoon.

b. Rainfall.

A brief period of heavy rain from the direct remnants of the storm is expected over parts of southern Quebec tonight. The St. Lawrence River valley from Montreal to Quebec City is most likely to be affected with up to 60 mm. Most of the rain will fall over a short period of time (2-3 hours) therefore some minor flooding may occur in prone locations.

Showers/light rain well ahead and to the west of the storm track today are due to a non-tropical low/trough not directly related to Isaias. Total combined rainfall is expected to be in the 30-60 mm range.

c. Surge/Waves.

Nothing significant expected. Waves of 2-3 m along the southwestern portion of New Brunswick are expected tonight and into Wednesday.

3. Marine weather impacts and warnings summary.

Marginal gale-force winds can be expected over westernmost Maritime marine regions including the mouth of the St. Lawrence River tonight and into Wednesday. Seas of 2-3 metres are expected. Small craft operators should take precautions.

Forecaster: Fogarty


Please continue to monitor alerts issued by the Canadian Hurricane Centre and forecasts issued by Environment Canada.

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