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[The Saffir-Simpson Hurricane Category Scale.]
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Tropical Storm Debby

2012-06-26: A tropical depression in the Gulf of Mexico has been upgraded to Tropical Storm Debby.

2012-06-26: After deluging Florida for 3 days Debby is downgraded to a tropical depression as it makes its way into the Atlantic.

GOES East AVN Image of Debby. Click on image for loop.

WTNT34 KNHC 270831
TCPAT4

BULLETIN
TROPICAL DEPRESSION DEBBY ADVISORY NUMBER 16
NWS NATIONAL HURRICANE CENTER MIAMI FL AL042012
500 AM EDT WED JUN 27 2012

…DEBBY BECOMING LESS ORGANIZED AS IT REACHES THE EAST COAST OF
NORTH-CENTRAL FLORIDA…

SUMMARY OF 500 AM EDT…0900 UTC…INFORMATION
———————————————-
LOCATION…29.6N 81.0W
ABOUT 25 MI…45 KM SE OF ST. AUGUSTINE FLORIDA
MAXIMUM SUSTAINED WINDS…35 MPH…55 KM/H
PRESENT MOVEMENT…ENE OR 75 DEGREES AT 10 MPH…17 KM/H
MINIMUM CENTRAL PRESSURE…998 MB…29.47 INCHES

WATCHES AND WARNINGS
——————–
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

DISCUSSION AND 48-HOUR OUTLOOK
——————————
AT 500 AM EDT…0900 UTC…THE CENTER OF TROPICAL DEPRESSION DEBBY
WAS LOCATED NEAR LATITUDE 29.6 NORTH…LONGITUDE 81.0 WEST. THE
DEPRESSION IS MOVING TOWARD THE EAST-NORTHEAST NEAR 10 MPH…17
KM/H. THIS GENERAL MOTION IS EXPECTED DURING THE NEXT DAY OR TWO
WITH SOME INCREASE IN FORWARD SPEED. ON THE FORECAST TRACK…DEBBY
SHOULD GRADUALLY MOVE AWAY FROM FLORIDA TODAY.

MAXIMUM SUSTAINED WINDS ARE NEAR 35 MPH…55 KM/H…WITH HIGHER
GUSTS. LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT 48
HOURS.

ESTIMATED MINIMUM CENTRAL PRESSURE IS 998 MB…29.47 INCHES.

HAZARDS AFFECTING LAND
———————-
STORM SURGE…ELEVATED WATER LEVELS IN AREAS OF ONSHORE FLOW ALONG
THE SOUTHWESTERN AND NORTHEASTERN COASTS OF FLORIDA SHOULD SUBSIDE
LATER TODAY. FOR INFORMATION SPECIFIC TO YOUR AREA…PLEASE SEE
PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE OFFICE.

RAINFALL…RAINFALL ASSOCIATED WITH DEBBY WILL CONTINUE TO DIMINISH
ACROSS THE FLORIDA PENINSULA TODAY. ADDITIONAL ISOLATED RAINFALL
AMOUNTS OF UP TO ONE INCH WILL BE POSSIBLE IN SOME OF THE LINGERING
RAIN BANDS…MAINLY OVER SOUTHERN FLORIDA.

ZCZC MIATCDAT4 ALL
TTAA00 KNHC DDHHMM

TROPICAL DEPRESSION DEBBY DISCUSSION NUMBER 16
NWS NATIONAL HURRICANE CENTER MIAMI FL AL042012
500 AM EDT WED JUN 27 2012

SATELLITE…RADAR AND SURFACE OBSERVATIONS INDICATE THAT THE
CIRCULATION OF DEBBY IS INCREASINGLY BECOMING ELONGATED. THE CENTER
IS DIFFICULT TO LOCATE GIVEN THE LACK OF ORGANIZATION…BUT THE AREA
OF MINIMUM PRESSURE HAS BEEN MOVING EAST-NORTHEASTWARD OR 075
DEGREES AT 9 KNOTS ACROSS NORTH-CENTRAL FLORIDA. MOST OF THE DEEP
CONVECTION IS IN A FRONTAL-TYPE BAND EXTENDING NORTHEASTWARD FROM
FLORIDA ACROSS THE ADJACENT ATLANTIC. THE MAXIMUM WINDS ARE STILL
PROBABLY 30 KNOTS IN A FEW SQUALLS MAINLY OVER WATER.

NONE OF THE INTENSITY GUIDANCE SHOW A SIGNIFICANT INCREASE IN
STRENGTH…AND IN FACT…BOTH THE GFS AND THE ECMWF SUGGEST
WEAKENING IN THE 00 UTC RUN. THE OFFICIAL FORECAST KEEPS DEBBY AS A
TROPICAL DEPRESSION AND ALLOWS SOME SLIGHT STRENGTHENING BEYOND 3
DAYS.

DEBBY IS EMBEDDED IN WESTERLY FLOW WITHIN THE BASE OF A MID-LATITUDE
TROUGH…AND IT SHOULD CONTINUE TO MOVE TOWARD THE EAST-NORTHEAST OR
NORTHEAST AS INDICATED BY GLOBAL MODELS. THE OFFICIAL FORECAST IS
IN BETWEEN THE GFS AND ECMWF MODELS.

FORECAST POSITIONS AND MAX WINDS

INIT 27/0900Z 29.6N 81.0W 30 KT 35 MPH…OVER WATER
12H 27/1800Z 30.0N 79.4W 30 KT 35 MPH
24H 28/0600Z 30.5N 76.5W 30 KT 35 MPH
36H 28/1800Z 31.0N 73.0W 30 KT 35 MPH
48H 29/0600Z 32.0N 70.5W 30 KT 35 MPH
72H 30/0600Z 35.0N 66.5W 35 KT 40 MPH
96H 01/0600Z 38.0N 62.0W 40 KT 45 MPH
120H 02/0600Z 45.5N 50.0W 40 KT 45 MPH