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Isaias Becomes Extra-Tropical, Still Causing Headaches in New England
August 5, 2020
UPDATED By WeatherBug Meteorologists
Isaias’ has transitioned to an extra-tropical cyclone tonight, with a nearly full repertoire of tropical hazards likely through early Wednesday across northern New England.
As of 11 p.m. EDT, Post-Tropical Cyclone Isaias was located near 45.3 N and 72.5 W, or about 45 miles east-southeast of Montreal, Quebec. Isaias’ top sustained winds have fallen to 45 mph and it is racing to the north-northeast at 38 mph. The minimum central pressure has climbed to 1000 mb, or 29.53 inches of mercury.
A Tropical Storm Warning is in place from the Merrimack River in Massachusetts, to Stonington, Maine.
With Isaias swirling across southern Quebec Province, squally rain bands extend all the way to the U.S. and Canada border in New England tonight. In addition to delivering tropical storm force winds, the storm will dump another 1 to 3 inches of rain along its path across Upstate New York and northern Vermont and New Hampshire. This type of rain falling in a short time will likely lead to poor drainage, low-lying urban, and flash flooding.
Flash Flood Watches are in place from New York’s Hudson Valley to northwestern Maine. This includes Albany and Glens Falls, N.Y., Burlington, Rutland, and Montpelier, Vt., Berlin, N.H., and Rumford, Maine. Remember, if you approach a roadway covered in water, it is best to “Turn Around, Don’t Drown.”
Isaias’ far inland track across the Northeast could deliver brief tornado spin ups from severe weather in eastern New England tonight as well.
Isaias brought a large swath of tropical storm force winds, or those greater than 39 mph, from southern Florida to Vermont and New Hampshire since last weekend. A narrow corridor of hurricane strength winds, or those greater than 74 mph, rolled onto the northeastern South Carolina and southwestern North Carolina coast’s late last night and early this morning when Isaias made landfall near Ocean Isle Beach, N.C. The storm also dumped copious amounts of rain from eastern North Carolina to Upstate New York and western Vermont, with southern and the eastern Maryland shore to eastern Pennsylvania particularly hard hit as many spots saw 3 to locally 6 inches of rain on Wednesday.