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Rain And Gusty Winds Continue To Spread Over Eastern Quebec

Post-Tropical Cyclone

Forecast Cone image updated at 03:37 AM
Forecast Cone image updated at 03:37 AM

Location 55 miles NNW of Quebec City
Wind 40 mph
Heading NNE at 28 mph
Pressure 29.53
Coordinates 71.8W, 47.5N

Discussion

At 500 a.m. EDT (0900 UTC), the center of Post-Tropical Cyclone Isaias was located near latitude 47.5 north, longitude 71.8 west. The post-tropical cyclone is moving toward the north-northeast near 28 mph (44 km/h), and this general motion is expected with a decrease in forward speed through tonight.

Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Weakening is expected, and the winds are expected to drop below tropical-storm force this morning. The post-tropical cyclone is expected to dissipate over southeastern Canada on Thursday.

Tropical-storm-force winds extend outward up to 140 miles (220 km) to the northeast and east of the center primarily over and near the St. Lawrence river.

The estimated minimum central pressure is 1000 mb (29.53 inches).

Satellite image updated at 03:38 AM
Satellite image updated at 03:38 AM

Watches and Warnings

There are no coastal watches or warnings in effect.

Models image updated at 08:10 AM
Models image updated at 08:10 AM

Land Hazards

Wind: gale-force winds will continue over and near the St. Lawrence river this morning. Gale-force wind gusts are possible elsewhere over southeastern quebec today. See products issued by environment Canada for more information.

Rainfall: rainfall accumulations of 1 to 3 inches are expected along and near the track of Isaias across southern quebec.

Even though the rainfall has ended, scattered minor to moderate and isolated major river flooding is ongoing across portions of the mid-Atlantic with most rivers expected to fall below flood stage by later today.

Surf: swells generated by Isaias will affect the coast of the northeast United States through this morning. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office.