000
AXNT20 KNHC 261059
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
805 AM EDT FRI MAR 26 2010

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL 
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS
OF SOUTH AMERICA...AND 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...

ITCZ AXIS IS CENTERED ALONG 8N10W 4N19W 1N32W 2N43W CROSSING THE 
EQUATOR AND INLAND OVER SOUTH AMERICA NEAR 50W. CLUSTERS OF 
SCATTERED MODERATE/ISOLATED STRONG CONVECTION ARE FROM 1N-7N 
BETWEEN 10W-16W. CLUSTERS OF SCATTERED MODERATE CONVECTION ARE 
WITHIN 60 NM OF THE ITCZ BETWEEN 38W-42W AND S OF THE ITCZ AND W 
OF 43W TO INLAND OVER SOUTH AMERICA. 

...DISCUSSION...

GULF OF MEXICO...
AS OF 26/0900 UTC...A COLD FRONT ENTERS THE GULF FROM A 1008 MB 
LOW OVER THE FLORIDA NEAR 31N85W EXTENDING ALONG 27N87W 23N90W 
TO THE COAST OF MEXICO NEAR 19N91W. SCATTERED SHOWERS/ISOLATED  
THUNDERSTORMS ARE E OF THE FRONT WITHIN 60/75 NM OF 26N E OF 85W 
ACROSS THE FLORIDA PENINSULA. OVERCAST LOW/MID CLOUDS WITH 
POSSIBLE ISOLATED SHOWERS ARE WITHIN 180 NM W OF THE FRONT S OF 
22N INTO THE BAY OF CAMPECHE. AN UPPER TROUGH SUPPORTING THE 
FRONT COVERS THE GULF N OF 23N WITH THE UPPER LOW MOVING NE OVER 
THE WESTERN PORTION OF VIRGINIA. STRONG SUBSIDENCE AND DRY 
STABLE ALOFT COVERS THE GULF BEHIND THE FRONT GIVING REMAINDER 
OF THE AREA MOSTLY CLEAR SKIES THIS MORNING. 

CARIBBEAN SEA...
A BROAD UPPER RIDGE COVERS THE AREA ANCHORED IN THE CENTRAL 
CARIBBEAN NEAR 15N76W PROVIDING STRONG SUBSIDENCE AND DRY AIR 
ALOFT ACROSS THE ENTIRE BASIN AS NOTED ON WATER VAPOR IMAGERY. 
FRESH TO STRONG EASTERLY TRADE WINDS CONTINUE ACROSS THE BASIN 
WITH ISOLATED PATCHES OF BROKEN/OVERCAST LOW CLOUDS AND POSSIBLE 
ISOLATED SHOWERS MAINLY OVER THE S CARIBBEAN S OF 15N. OTHERWISE 
MOSTLY CLEAR SKIES AND FAIR WEATHER DOMINATE REMAINDER OF THE 
CARIBBEAN.  

ATLANTIC OCEAN...
SCATTERED SHOWERS/ISOLATED THUNDERSTORMS ARE OVER THE FAR W ATLC 
FROM 25N-28N W OF 78W ASSOCIATED WITH A COLD FRONT CURRENTLY IN 
THE GULF OF MEXICO. A DEEP LAYERED RIDGE COVERS THE W ATLC WITH 
THE SURFACE RIDGE ANCHORED BY A 1020 MB HIGH E OF BERMUDA  NEAR 
33N61W AND THE UPPER RIDGE AXIS EXTENDING FROM THE CARIBBEAN 
ACROSS HISPANIOLA TO BEYOND 32N64W. A WEAK COLD FRONT ENTERS THE 
CENTRAL ATLC NEAR 32N44W EXTENDING SW TO 26N56W WITH THE UPPER 
LEVEL SUPPORT N OF 27N BETWEEN 42W-57W. SCATTERED SHOWERS/  
ISOLATED THUNDERSTORMS ARE WITHIN 120 NM E OF THE FRONT N OF 
28N. A MID TO LOW LEVEL CYCLONIC CURVATURE IS OBSERVED IN THE 
CLOUD PATTERN ON SATELLITE IMAGERY WITH A SURFACE TROUGH 
EXTENDING FROM 26N49W TO 21N47W. A SURFACE RIDGE DOMINATES THE 
REMAINDER OF THE ATLC ANCHORED BY A 1023 MB HIGH NEAR 33N25W 
GIVING THE REMAINDER OF THE AREA FAIR WEATHER THIS MORNING. 
 
FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

$$
WALLACE