Saturday, September 26, 2015

High Surf, Rip Current, Flash Flood Threat From the Carolinas to New Jersey; Minor to Moderate Flooding Reported (FORECAST)

First off, any broad area of low pressure off the coast of the Carolinas is highly unlikely to develop into a subtropical or tropical cyclone.
As has been the case often this season, wind shear is currently too strong to allow any tropical or subtropical development.
Despite the low chance of development, a stuck weather pattern is shaping up to make a getaway to the beaches of the Carolinas and parts of the Mid-Atlantic states less than ideal, to put it mildly.
First, the polar branch of the jet stream will remain well to the north over eastern Canada or northern New England, ensuring little change in the weather over the eastern U.S. through Monday.
At the surface, strong high pressure will build southeastward into eastern Canada and northern New England.
Meanwhile, stubborn low pressure will linger somewhere off the coast of the Carolinas possibly crawling slowly northward off the Mid-Atlantic seaboard into early in the coming week.
As the high pressure center moves south, the distance between the high and low pressure centers will become smaller – and the pressure difference, or gradient, between these two features will become stronger. This will maintain and even strengthen that persistent onshore wind from the Atlantic Ocean toward the Outer Banks of North Carolina, Virginia Tidewater, Delmarva Peninsula, and Jersey shore the next several days.
Those winds should peak in intensity through early Sunday, when a broad swath of sustained easterly winds between 30 and 40 mph is forecast over a stripe of ocean water just east of the Virginia and North Carolina coasts.

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