000
AXNT20 KNHC 260523
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
205 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0345 UTC...

...ITCZ...

ITCZ AXIS IS ANALYZED ALONG 11N15W 3N22W CROSSING THE EQUATOR 
NEAR 29W TO INLAND OVER SOUTH AMERICA NEAR 3S42W. SCATTERED 
MODERATE/ISOLATED STRONG CONVECTION IS WITHIN A 60 NM RADIUS OF 
5.5N14W. 

...DISCUSSION...

GULF OF MEXICO...
AS OF 26/0300 UTC...A COLD FRONT ENTERS THE GULF FROM A 1008 MB 
LOW OVER THE FLORIDA/ALABAMA BORDER NEAR 31N87W EXTENDING S 
ALONG 26N89W 21N93W TO THE COAST OF MEXICO NEAR 18N93W. 
SCATTERED SHOWERS/THUNDERSTORMS ARE WELL E OF THE FRONT WITHIN 
30/45 NM OF LINE FROM 26N87W TO OVER THE FLORIDA PENINSULA NEAR 
TAMPA. SCATTERED SHOWERS AND POSSIBLE ISOLATED THUNDERSTORMS ARE 
S OF 27N E OF 88W TO OVER S FLORIDA AND THROUGH THE FLORIDA 
STRAITS. OVERCAST LOW/MID CLOUDS WITH POSSIBLE ISOLATED SHOWERS 
ARE WITHIN 120 NM W OF THE FRONT S OF 22N INTO THE BAY OF 
CAMPECHE. AN UPPER TROUGH SUPPORTING THE FRONT COVERS THE GULF N 
OF 24N WITH THE UPPER LOW OVER E TENNESSEE. STRONG SUBSIDENCE 
AND DRY STABLE ALOFT COVERS THE NE GULF BEHIND THE FRONT GIVING 
REMAINDER OF THE AREA CLEAR SKIES TONIGHT. 

CARIBBEAN SEA...
A BROAD UPPER RIDGE COVERS THE AREA ANCHORED IN THE CENTRAL 
CARIBBEAN NEAR 16N75W 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 N OF 18N FROM 70W-80W. OTHERWISE MOSTLY CLEAR 
SKIES AND FAIR WEATHER DOMINATE REMAINDER OF THE CARIBBEAN.  

ATLANTIC OCEAN...
SCATTERED SHOWERS/ISOLATED THUNDERSTORMS ARE OVER THE FAR W ATLC 
W OF A LINE FROM NEAR DAYTONA BEACH FLORIDA TO BEYOND 32N78W 
ASSOCIATED WITH A COLD FRONT CURRENTLY IN THE GULF OF MEXICO. 
A DEEP LAYERED RIDGE COVERS ALL OF THE W ATLC WITH THE SURFACE 
RIDGE ANCHORED BY A 1022 MB HIGH NEAR BERMUDA AND THE UPPER 
RIDGE AXIS EXTENDING FROM THE CARIBBEAN ACROSS HISPANIOLA TO 
BEYOND 32N66W. A WEAK COLD FRONT ENTERS THE CENTRAL ATLC NEAR 
32N46W EXTENDING SW TO 27N54W WITH THE UPPER LEVEL SUPPORT N OF 
31N. SCATTERED SHOWERS/ISOLATED THUNDERSTORMS ARE WITHIN 90 NM E 
OF THE FRONT N OF 28N. A MID TO LOW LEVEL ROTATION IS OBSERVED 
IN THE CLOUD PATTERN ON SATELLITE IMAGERY WITH A SURFACE TROUGH 
26N50W TO 20N47W. A SURFACE RIDGE DOMINATES THE REMAINDER OF THE 
ATLC ANCHORED BY A 1023 MB HIGH NEAR 31N30W GIVING THE REMAINDER 
OF THE AREA FAIR WEATHER TONIGHT. 
 
FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

$$
WALLACE