Hurricane Irene Advisory, August 23, 2011 (2 PM EDT)

Miami, Florida--(ENEWSPF)--August 23, 2011 - 2 PM EDT

[Image of 5-day forecast and coastal areas under a warning or a watch]


About this product:

This graphic shows an approximate representation of coastal areas under a hurricane warning (red), hurricane watch (pink), tropical storm warning (blue) and tropical storm watch (yellow). The orange circle indicates the current position of the center of the tropical cyclone. The black line, when selected, and dots show the National Hurricane Center (NHC) forecast track of the center at the times indicated. The dot indicating the forecast center location will be black if the cyclone is forecast to be tropical and will be white with a black outline if the cyclone is forecast to be extratropical. If only an L is displayed, then the system is forecast to be a remnant low. The letter inside the dot indicates the NHC’s forecast intensity for that time:

D: Tropical Depression – wind speed less than 39 MPH
S: Tropical Storm – wind speed between 39 MPH and 73 MPH
H: Hurricane – wind speed between 74 MPH and 110 MPH
M: Major Hurricane – wind speed greater than 110 MPH

HURRICANE CONDITIONS EXPECTED TO REACH THE TURKS AND CAICOS ISLANDS VERY SOON…

SUMMARY OF 200 PM EDT…1800 UTC…INFORMATION

———————————————-

LOCATION…20.7N 71.2W

ABOUT 55 MI…90 KM S OF GRAND TURK ISLAND

ABOUT 70 MI…115 KM NNW OF PUERTO PLATA DOMINICAN REPUBLIC

MAXIMUM SUSTAINED WINDS…100 MPH…160 KM/H

PRESENT MOVEMENT…WNW OR 295 DEGREES AT 10 MPH…17 KM/H MINIMUM CENTRAL PRESSURE…977 MB…28.85 INCHES

WATCHES AND WARNINGS

CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY…

THE GOVERNMENT OF THE DOMINICAN REPUBLIC HAS DISCONTINUED THE TROPICAL STORM WARNING EAST OF CABO FRANCES VIEJO.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT…

A HURRICANE WARNING IS IN EFFECT FOR…

  • TURKS AND CAICOS ISLANDS
  • THE SOUTHEASTERN…CENTRAL…AND NORTHWESTERN BAHAMAS

A HURRICANE WATCH IS IN EFFECT FOR…

  • NORTH COAST OF HAITI FROM LE MOLE ST. NICHOLAS EASTWARD TO THE DOMINICAN REPUBLIC BORDER

A TROPICAL STORM WARNING IS IN EFFECT FOR…

  • NORTH COAST OF THE DOMINICAN REPUBLIC FROM CABO FRANCES VIEJO WESTWARD TO THE HAITI BORDER
  • NORTH COAST OF HAITI FROM LE MOLE ST. NICHOLAS EASTWARD TO THE DOMINICAN REPUBLIC BORDER

FOR STORM INFORMATION SPECIFIC TO YOUR AREA…PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE.

DISCUSSION AND 48-HOUR OUTLOOK

AT 200 PM EDT…1800 UTC…THE CENTER OF HURRICANE IRENE WAS LOCATED BY AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT NEAR LATITUDE 20.7 NORTH…LONGITUDE 71.2 WEST. IRENE IS MOVING TOWARD THE WEST-NORTHWEST NEAR 10 MPH…17 KM/H…AND THIS GENERAL MOTION IS EXPECTED TO CONTINUE THROUGH TONIGHT…FOLLOWED BY A TURN TOWARD THE NORTHWEST ON WEDNESDAY. ON THE FORECAST TRACK…THE CORE OF IRENE WILL MOVE NEAR OR OVER THE TURKS AND CAICOS ISLANDS THIS EVENING…NEAR OR OVER THE SOUTHEASTERN AND CENTRAL BAHAMAS TONIGHT AND WEDNESDAY…AND NEAR OR OVER THE NORTHWESTERN BAHAMAS ON THURSDAY.

MAXIMUM SUSTAINED WINDS ARE NEAR 100 MPH…160 KM/H…WITH HIGHER GUSTS.  IRENE IS A CATEGORY TWO HURRICANE ON THE SAFFIR-SIMPSON HURRICANE WIND SCALE.  STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS…AND IRENE COULD BECOME A MAJOR HURRICANE BY WEDNESDAY.

HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 50 MILES…85 KM…FROM THE CENTER…AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 205 MILES…335 KM.  AN OFFICIAL WEATHER OBSERVING SITE AT PROVIDENCIALES IN THE CAICOS ISLANDS RECENTLY REPORTED A WIND GUST TO 50 MPH.

THE MINIMUM CENTRAL PRESSURE REPORT BY RECONNAISSANCE AIRCRAFT WAS 977 MB…28.85 INCHES.

HAZARDS AFFECTING LAND

WIND…TROPICAL STORM CONDITIONS WILL CONTINUE OVER NORTHERN PORTIONS OF THE DOMINICAN REPUBLIC THROUGH THIS AFTERNOON. TROPICAL STORM CONDITIONS WILL CONTINUE TO SPREAD OVER THE SOUTHEASTERN BAHAMAS AND THE TURKS AND CAICOS ISLANDS WITH HURRICANE CONDITIONS EXPECTED THIS AFTERNOON AND EVENING.  TROPICAL STORM CONDITIONS ARE FORECAST TO REACH THE CENTRAL BAHAMAS LATE TONIGHT WITH HURRICANE CONDITIONS EXPECTED BY WEDNESDAY.  TROPICAL STORM CONDITIONS ARE EXPECTED IN THE NORTHWESTERN BAHAMAS BY LATE WEDNESDAY…WITH HURRICANE CONDITIONS EXPECTED BY THURSDAY.

STORM SURGE…AN EXTREMELY DANGEROUS STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 9 TO 13 FEET ABOVE NORMAL TIDE LEVELS OVER THE BAHAMAS AND THE TURKS AND CAICOS ISLANDS…NEAR AND TO THE NORTH OF THE CENTER OF IRENE. A STORM SURGE WILL ALSO RAISE WATER LEVELS BY AS MUCH AS 2 TO 4 FEET ABOVE NORMAL TIDE LEVELS ALONG THE NORTH COAST OF HAITI. NEAR THE COAST…THE SURGE WILL BE ACCOMPANIED BY LARGE AND DANGEROUS WAVES. STORM SURGE IN THE DOMINICAN REPUBLIC WILL GRADUALLY SUBSIDE TODAY.

RAINFALL...IRENE IS EXPECTED TO PRODUCE ADDITIONAL RAINFALL ACCUMULATIONS OF 1 TO 3 INCHES ACROSS PUERTO RICO.  RAINFALL AMOUNTS OF 4 TO 8 INCHES ARE EXPECTED OVER NORTHERN HISPANIOLA… WITH ISOLATED MAXIMUM AMOUNTS OF UP TO 15 INCHES POSSIBLE OVER HIGHER TERRAIN.  THESE RAINS COULD CAUSE LIFE-THREATENING FLASH FLOODS AND MUD SLIDES IN AREAS OF STEEP TERRAIN.  RAINFALL ACCUMULATIONS OF 5 TO 10 INCHES ARE EXPECTED IN THE SOUTHEASTERN AND CENTRAL BAHAMAS…AND THE TURKS AND CAICOS ISLANDS.

Source: nhc.noaa.gov

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