Hurricane Sandy

Public Advisory 12A



938
WTNT33 KNHC 251157
TCPAT3

BULLETIN
HURRICANE SANDY INTERMEDIATE ADVISORY NUMBER 12A
NWS NATIONAL HURRICANE CENTER MIAMI FL AL182012
800 AM EDT THU OCT 25 2012

...SANDY MOVING BETWEEN THE NORTHEAST COAST OF CUBA AND THE CENTRAL
BAHAMAS...


SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...21.6N 75.5W
ABOUT 130 MI...215 KM S OF GREAT EXUMA IN THE CENTRAL BAHAMAS
ABOUT 75 MI...125 KM NE OF HOLGUIN CUBA
MAXIMUM SUSTAINED WINDS...105 MPH...165 KM/H
PRESENT MOVEMENT...N OR 10 DEGREES AT 18 MPH...30 KM/H
MINIMUM CENTRAL PRESSURE...967 MB...28.55 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...

NONE

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A HURRICANE WARNING IS IN EFFECT FOR...
* CUBAN PROVINCES OF CAMAGUEY...LAS TUNAS...GRANMA...SANTIAGO DE
CUBA...HOLGUIN...AND GUANTANAMO
* THE RAGGED ISLANDS IN THE SOUTHEASTERN BAHAMAS
* THE CENTRAL BAHAMAS
* THE NORTHWESTERN BAHAMAS

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* HAITI
* FLORIDA EAST COAST FROM OCEAN REEF TO FLAGLER BEACH
* LAKE OKEECHOBEE
* THE REMAINDER OF THE SOUTHEASTERN BAHAMAS

A TROPICAL STORM WATCH IS IN EFFECT FOR...
* FLORIDA EAST COAST FROM NORTH OF FLAGLER BEACH TO FERNANDINA BEACH
* FLORIDA UPPER KEYS FROM OCEAN REEF TO CRAIG KEY
* FLORIDA BAY

INTERESTS ELSEWHERE ALONG THE EAST COAST OF THE UNITED STATES SHOULD
MONITOR THE PROGRESS OF SANDY.

A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA. 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...IN THIS CASE WITHIN
24 TO 36 HOURS.

A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA.

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 AM EDT...1200 UTC...THE CENTER OF HURRICANE SANDY WAS LOCATED
BY AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT NEAR LATITUDE
21.6 NORTH...LONGITUDE 75.5 WEST. SANDY IS MOVING TOWARD THE NORTH
NEAR 18 MPH...30 KM/H...AND THIS GENERAL MOTION IS EXPECTED TO
CONTINUE TODAY. A TURN TOWARD THE NORTH-NORTHWEST AND A DECREASE IN
FORWARD SPEED ARE EXPECTED TONIGHT AND FRIDAY. ON THE FORECAST
TRACK...THE CENTER OF SANDY WILL MOVE NEAR OR OVER THE CENTRAL
BAHAMAS LATER TODAY AND TONIGHT...AND MOVE NEAR OR OVER THE
NORTHWESTERN BAHAMAS ON FRIDAY.

MAXIMUM SUSTAINED WINDS ARE NEAR 105 MPH...165 KM/H...WITH HIGHER
GUSTS. SANDY IS A CATEGORY TWO HURRICANE ON THE SAFFIR-SIMPSON
HURRICANE WIND SCALE. GRADUAL WEAKENING IS FORECAST OVER THE NEXT
48 HOURS. HOWEVER...SANDY IS EXPECTED TO REMAIN A HURRICANE AS IT
MOVES THROUGH THE BAHAMAS.

HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 25 MILES...35 KM...FROM
THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 140
MILES...220 KM. GUANTANAMO BAY CUBA RECENTLY REPORTED A SUSTAINED
WIND OF 39 MPH...63 KM/H...AND A GUST OF 51 MPH...81 KM/H.

THE MINIMUM CENTRAL PRESSURE BASED ON AIRCRAFT DATA IS 967 MB...
28.55 INCHES.


HAZARDS AFFECTING LAND
----------------------
WIND...HURRICANE CONDITIONS WILL GRADUALLY SUBSIDE OVER EASTERN CUBA
TODAY. HURRICANE CONDITIONS ARE EXPECTED TO SPREAD ACROSS THE
CENTRAL AND NORTHWESTERN BAHAMAS LATER TODAY THROUGH FRIDAY.
TROPICAL STORM CONDITIONS ARE EXPECTED IN THE WARNING AREA ALONG
THE EAST COAST OF FLORIDA TONIGHT AND FRIDAY...AND ARE POSSIBLE IN
THE WATCH AREA FRIDAY NIGHT.

RAINFALL...SANDY IS EXPECTED TO PRODUCE TOTAL RAINFALL AMOUNTS OF
6 TO 12 INCHES ACROSS HAITI...THE DOMINICAN REPUBLIC AND EASTERN
CUBA...WITH ISOLATED MAXIMUM AMOUNTS OF 20 INCHES POSSIBLE. THESE
RAINS MAY PRODUCE LIFE-THREATENING FLASH FLOODS AND MUD SLIDES...
ESPECIALLY IN AREAS OF MOUNTAINOUS TERRAIN. RAINFALL TOTALS OF 3 TO
6 INCHES ARE EXPECTED OVER PORTIONS OF THE BAHAMAS...WITH ISOLATED
MAXIMUM AMOUNTS OF 12 INCHES POSSIBLE. RAINFALL TOTALS OF 1 TO 3
INCHES ARE POSSIBLE ACROSS THE FLORIDA KEYS INTO SOUTHEAST AND EAST
CENTRAL FLORIDA.

STORM SURGE...THE COMBINATION OF A DANGEROUS STORM SURGE AND THE
TIDE WILL CAUSE NORMALLY DRY AREAS NEAR THE COAST TO BE FLOODED BY
RISING WATERS. THE WATER COULD REACH THE FOLLOWING DEPTHS ABOVE
GROUND IF THE PEAK SURGE OCCURS AT THE TIME OF HIGH TIDE...

JAMAICA...1 TO 3 FT
SOUTHEASTERN CUBA...4 TO 7 FT
CENTRAL AND NORTHWESTERN BAHAMAS...5 TO 8 FT
FLORIDA COAST WITHIN WARNING AREA...1 TO 2 FT

SURGE-RELATED FLOODING DEPENDS ON THE RELATIVE TIMING OF THE SURGE
AND THE TIDAL CYCLE...AND CAN VARY GREATLY OVER SHORT DISTANCES.
FOR INFORMATION SPECIFIC TO YOUR AREA...PLEASE SEE PRODUCTS ISSUED
BY YOUR LOCAL WEATHER OFFICE.


NEXT ADVISORY
-------------
NEXT COMPLETE ADVISORY...1100 AM EDT.

$$
FORECASTER BRENNAN