000
AXNT20 KNHC 241038
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
805 AM EDT THU MAY 24 2007

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL 
AMERICA...THE GULF OF MEXICO...THE CARIBBEAN SEA...NORTHERN 
SECTIONS OF SOUTH AMERICA...AND THE ATLANTIC OCEAN TO THE 
AFRICAN COAST FROM THE EQUATOR TO 32N. THE FOLLOWING INFORMATION 
IS BASED ON SATELLITE IMAGERY...METEOROLOGICAL ANALYSIS... 
WEATHER OBSERVATIONS...AND RADAR.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1015 UTC.

...ITCZ...
10N14W 7N20W 4N30W 4N36W 5N43W 5N56W INTO SURINAME. SCATTERED 
STRONG SHOWERS AND THUNDERSTORMS FROM THE EQUATOR TO 4N BETWEEN
THE PRIME MERIDIAN AND 3W...AND FROM 2N TO 7N BETWEEN 22W AND 
43W. ISOLATED MODERATE SHOWERS ELSEWHERE FROM THE EQUATOR TO 7N 
BETWEEN 10W AND 20W...AND FROM 3N TO 9N BETWEEN 49W AND 55W.

THE GULF OF MEXICO...
MIDDLE TO UPPER LEVEL CYCLONIC FLOW FROM A TROUGH COVERS THE 
AREA NORTH OF 33N BETWEEN 100W AND 128W. THE MIDDLE LEVEL 
SHORTWAVE TROUGH IN LOUISIANA FROM 24 HOURS AGO NOW EXTENDS
FROM FLORIDA NEAR 27N80W TO 27N85W TO SOUTHEASTERN LOUISIANA
NEAR 30N90W. A MIDDLE TO UPPER LEVEL CYCLONIC CIRCULATION CENTER 
IS NEAR 25N91W. UPPER LEVEL ANTICYCLONIC FLOW IS SOUTH OF 23N
BETWEEN 86W AND 100W. A SURFACE RIDGE PASSES THROUGH NORTHWESTERN
SOUTH CAROLINA TO CENTRAL ALABAMA TO THE MIDDLE TEXAS COAST.
 
THE CARIBBEAN SEA...
BROAD MIDDLE TO UPPER LEVEL NORTHWESTERLY WIND FLOW COVERS THE 
AREA. UPPER LEVEL ANTICYCLONIC FLOW IS SOUTH OF 15N WEST OF 75W.
THE SURFACE PRESSURE GRADIENT IS WEAK-TO-NON EXISTENT. NUMEROUS
STRONG SHOWERS AND THUNDERSTORMS ARE ALONG THE PACIFIC OCEAN 
COAST FROM 9N TO 14N BETWEEN 85W AND 90W...JUST WEST OF COSTA 
RICA...TO NICARAGUA...TO HONDURAS AND ALL OF EL SALVADOR. ENOUGH 
UPPER LEVEL DIFFLUENT FLOW IS HELPING THIS PRECIPITATION TO 
MAINTAIN ITSELF. NUMEROUS STRONG SHOWERS AND THUNDERSTORMS ARE 
IN COLOMBIA FROM 8N TO 10N BETWEEN 73W AND 75W. SCATTERED STRONG
SHOWERS AND THUNDERSTORMS ARE WITHIN 15 TO 30 NM ON EITHER SIDE 
OF 10N76W 11N78W 12N81W. ISOLATED MODERATE SHOWERS FROM 11N TO 
13N BETWEEN 60W AND 62W. 

THE ATLANTIC OCEAN...
A MIDDLE TO UPPER LEVEL TROUGH ON WATER VAPOR IMAGERY PASSES 
OVER 34N61W TO 28N67W TO THE NORTHERN BAHAMAS. THIS TROUGH
SUPPORTS A STATIONARY FRONT PASSES THROUGH 32N54W TO 25N60W.
A TROUGH CONTINUES FROM 25N60W TO 20N66W...THIS POSITION IS AN 
ADJUSTED POSITION BASED ON QUIKSCAT AND SATELLITE DATA. STRONG 
SHOWERS AND THUNDERSTORMS ARE FROM 22N TO 24N BETWEEN 59W AND 
61W. AN UPPER LEVEL RIDGE IS ALONG 21N61W 28N58W BEYOND 32N52W.
SURFACE ANTICYCLONIC FLOW IS NORTH OF 15N BETWEEN 20W AND 51W.
A MIDDLE TO UPPER LEVEL CYCLONIC CIRCULATION CENTER IS NEAR 
24N32W. CYCLONIC FLOW IS FROM 20N TO 30N BETWEEN 30W AND 45W.
A FAR-EASTERN ATLANTIC OCEAN DEEP LAYER CYCLONIC CIRCULATION 
CENTER IS NEAR 32N15W. BROAD CYCLONIC FLOW ON WATER VAPOR 
IMAGERY COVERS THE AREA NORTH OF 24N BEYOND 32N EAST OF 30W TO 
AFRICA. THE CANARY ISLANDS/MADEIRA ISLANDS LOW PRESSURE CENTER
FROM 6 HOURS AGO HAS DISSIPATED.

$$
MT