Hurricane Irene Watches, Warnings Extended Northward All The Way To Boston, MA

Hurricane Irene Warnings, Watches Extended Northward To Massachusetts As New Local Advisories Issued Warning Of Storm Surges, Heavy Rains, And Flash Flooding

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Hurricane Irene has weakened slightly with maximum sustained winds of 110 Miles per hour as the National Weather center extends hurricane warnings and watches northward all the way up to Boston, Massachusetts.

Flooding, Storm Surge Updates, Surf conditions, and the new warning and watches are outlined below along with the additional local advisories, also posted below, which have been issued for:

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The storm is now 420 miles SSW of Cape Hatteras, North Carolina moving directly north at a speed of 14 miles per hour with a minimum central pressure of 942 MB or 27.82 inches.
Changes is Watches and Warnings:

  • The Hurricane Watch from the North Carolina/Virgina border to Sandy Hook, New Jersey – including the Delaware Bay and Chesapeake Bay south of Smith point has been changed to a Hurricane Warning.
  • The Tropical Storm Watch for the Chesapeake Bay from Smith Point northward and the Tidal Potomac has been changed to a Tropical Storm Warning
  • A Hurricane Watch has been issued from north of Sandy Hook, New Jersey to Massachusetts ending at the mouth of the Merrimack — including Long Island, Long Island Sound, Block Island, Martha’s Vineyard and Nantucket.

Summary of Watches and Warnings

Hurricane Warnings are in effect for:

  • The Grand Bahama and Abaco Islands
  • Little River Inlet, North Carolina northward to Sandy Hook, New Jersey including the Palmico, Albemarle, Currituck sounds, Delaware Bay, and the Chesapeake Bay south of Smith Point.

Tropical Storm Warnings are in effect for:

  • North of Sandy Hook to the mouth of the Merrimack in Massachusetts including Long Island, Long Island Sound, Block Island, Martha’s Vineyard and Nantucket.

Tropical Storm Watches are in effect for:

  • North of Edisto Beach, South Carolina to Little River Inlet.
  • Chesapeake Bay from Smith Point northward and the Tidal Potomac

Definitions:

  • A Hurricane Warning means Hurricane Conditions are expected within the warning area. A warning is typically first issued 36 hours in advance of tropical storm force winds which are conditions that make outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion.
  • A Tropical Storm Warning means that tropical storm conditions are expected in the area within 36 hours.
  • A Hurricane Watch means that hurricane conditions are possible within the area and are issued 48 hours before the anticipated first occurrence of tropical storm force winds.
  • A Watch is typically issued 48 hours prior to the expected conditions and often upgraded to a warning 36 hours prior unless conditions change.

Discussion and 48 hour Outlook

Irene is currently moving north at 14 mph and the motion is expected to continue over the next 24 hours. A gradual turn to the north-northeast is expected thereafter, which keeps it along the forecasted track. Hurricane Irene will pass well off the coast of northeastern Florida and will approach the North Carolina Coast Tonight and pass near or over the coast on Saturday.

Reports from the Air Force Reserve Hurricane Hunter indicate the maximum sustained winds have dropped from 115 MPH to 110 MPH which makes Irene a category 2 hurricane. Some re-intensification is expected and Irene is forecasted to be on the threshold between a category 2 and a category 3 hurricane as it reaches North Carolina.

Hurricane is a large tropical cyclone with hurricane force winds now extending up to 90 miles from the center, which is 10 miles more than the winds extended at the 2:00 am advisory.

Hazards Affecting Land

Tropical storm conditions are subsiding over the northwestern Bahamas and tropical storm force winds are expected within the southern portion of the hurricane warning area along the US east coast by late today.
Hurricane force winds are expected to reach the are tonight or Saturday morning.

Storm Surge

An extremely dangerous storm surge will rise water levels by as much as 6 to 11 feet above ground level in the in Hurricane Warning area in North Carolina, including in the Albemarle and Pamlico sounds.

The storm surge will raise water levels 4 to 8 feet above ground level over the southern portions of Chesapeake Bay, including in tributaries.

The storm surge will raise water levels by 3 to 6 feet along the Jersey Shore.

Along the coast the surge will be accompanied by large, destructive and life-threatening waves.

Rainfall

Irene is expected to produce rainfall accumulations of 6 to 10 inches with isolated maximum amounts of 15 inches. The heavy amounts of rainfall are forecasted from North Carolina into Southeastern Virginia, Eastern Maryland, Delaware, Eastern Pennsylvania, New Jersey, Southeastern New York, Long Island, Western Connecticut, and Western Massachusetts through Monday morning.

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