Hurricane Irene Intermediate Advisory From the National Hurricane Center Miami, Florida, August 25, 2011 (8 PM EDT)

Miami, Florida—(ENEWSPF)—August 25, 2011 UPDATE 5 PM EDT.  eNewsPark Forest continues to post raw data regarding hurricane Irene to keep the public informed as quickly as possible.

Eye of Irene Gradually Moving Away From Abaco Island in the Bahamas

Summary of 800 PM EDT (0000 UTC) Information

Location…27.7n 77.4w about 530 mi (855 km) SSW of Cape Hatteras, North Carolina

Maximum Sustained Winds…115 mph (185 km/h)

Present Movement…NNW or 335 degrees at 14 mph (22 km/h)

Minimum Central Pressure…946 mb (27.93 inches)

Watches And Warnings

Changes In Watches And Warnings With This Advisory

None

Summary Of Watches And Warnings In Effect

A Hurricane Warning Is In Effect For:

  • The Northwestern Bahamas  
  • The Coast of North Carolina from Little River Inlet northward to the Virginia border, including the Pamlico, Albemarle, and Currituck Sounds

A Hurricane Watch Is In Effect For:

  • The Virginia/North Carolina border northward to Sandy Hook, New Jersey, including Delaware Bay, and Chesapeake Bay south of Smith Point

A Tropical Storm Warning Is In Effect For:

  • North of Edisto Beach, South Carolina to Little River Inlet

A Tropical Storm Watch Is In Effect For:

  • Chesapeake Bay from Smith Point northward and the Tidal Potomac

A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area.  A warning is typically issued 36 hours before the anticipated first occurrence of tropical-storm-force winds, 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 somewhere within the warning area within 36 hours.

A Hurricane Watch means that hurricane conditions are possible within the watch area.  A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous.

A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours.

Interests elsewhere in the Mid-Atlantic States and New England should monitor the progress of Irene.

For storm information specific to your area in the United States, including possible inland watches and warnings, please monitor products issued by your Local National Weather Service Forecast Office.

For storm information specific to your area outside the United States, please monitor products issued by your national Meteorological Service.

Discussion and 48-hour Outlook

At 800 pm EDT (0000 UTC), the eye of Hurricane Irene was located near latitude 27.7 north, longitude 77.4 west. Irene is moving toward the north-northwest near 14 mph (22 km/h).  This motion is expected to continue tonight with a turn toward the north Friday. On the forecast track, Irene will continue to move away from the Northwestern Bahamas tonight, and the core of the hurricane will pass well offshore of the East Coast of Central and Northern Florida later tonight and early Friday.  The hurricane is forecast to approach the coast of North Carolina on Saturday.

Maximum sustained winds remain near 115 mph (185 km/h) with higher gusts.  Irene is a Category Three hurricane on the Saffir-Simpson Hurricane Wind Scale.  Some strengthening is possible tonight and Friday.

Irene is a large tropical cyclone.  Hurricane force winds extend outward up to 80 miles (130 km) from the center, and tropical storm force winds extend outward up to 290 miles (465 km).

The latest minimum central pressure estimated from an Air Force Reconnaissance Aircraft was 946 mb (27.93 inches).

Hazards Affecting Land

Wind...Hurricane and Tropical Storm conditions are beginning to subside over the Northwestern Bahamas. Tropical storm force winds are expected within the southern portion of the warning area along the United States East Coast by late Friday.  Hurricane force winds are expected to first reach the hurricane warning area by Saturday.

Storm Surge…water levels will gradually subside over the Northwestern and Central Bahamas tonight. Along the Eastern Coast of the United States, an extremely dangerous storm surge will raise water levels by as much as 5 to 10 feet above ground level within the hurricane warning area including the Albemarle and Pamlico Sounds.  Near the coast, the surge will be accompanied by large, destructive, and life-threatening waves. Irene also has the potential to produce significant storm surge flooding within the hurricane watch area including portions of the Chesapeake Bay, tributaries, and the eastern shore.

Rainfall...Irene is expected to produce rainfall accumulations of 6 to 12 inches over the Northern Bahamas.  Storm total rainfall amounts of 6 to 10 inches with isolated maximum amounts of 15 inches are expected over portions of eastern North Carolina and in the Mid-Atlantic States along the path of Irene.

Surf...swells generated by Irene are affecting portions of the coast of the Southeastern United States.  These swells will cause life-threatening surf and rip current conditions.

NEXT ADVISORY

Next Complete Advisory…1100 PM EDT.

Source: nhc.noaa.gov

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