000
AXNT20 KNHC 240527
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
205 AM EDT WED MAR 24 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 CENTERED ALONG 5N8W 2N22W 2N50W. A SURFACE TROUGH 
IS ANALYZED OVER PORTIONS OF BRAZIL ALONG 7N51W TO S OF THE 
EQUATOR NEAR 51W. CLUSTERS OF SCATTERED MODERATE/STRONG 
CONVECTION ARE FROM 4N TO S OF THE EQUATOR BETWEEN THE PRIME 
MERIDIAN AND 10W. CLUSTERS OF SCATTERED MODERATE/ISOLATED STRONG 
CONVECTION ARE WITHIN 200 NM N OF THE ITCZ FROM 14W-25W AND FROM 
8N TO S OF THE EQUATOR BETWEEN 49W-53W. 

...DISCUSSION...

GULF OF MEXICO...
A DEEP LAYERED RIDGE COVERS THE GULF WITH THE SURFACE RIDGE 
ANCHORED BY A 1020 MB HIGH NEAR 28N87W AND THE UPPER LEVEL RIDGE 
AXIS EXTENDS FROM AN UPPER HIGH INT HE E PACIFIC REGION ACROSS S 
MEXICO TO OVER THE MISSISSIPPI VALLEY. UPPER LEVEL MOISTURE IS 
BEING DRAWN OVER THE NW GULF IN THE FORM OF HIGH CLOUDS. STRONG 
SUBSIDENCE AND DRY STABLE ALOFT IS GIVING MOST OF THE GULF 
GENERALLY CLEAR SKIES TONIGHT. NEXT COLD FRONT IS EXPECTED TO 
EMERGE OFF THE TEXAS GULF COAST ON THURSDAY.

CARIBBEAN SEA...
AS OF 24/0300 UTC...A STATIONARY FRONT ENTERS THE CARIBBEAN 
THROUGH THE WINDWARD PASSAGE TO OVER JAMAICA WHERE IT IS 
BEGINNING TO DISSIPATE TO 14N82W. MODERATE TO FRESH EASTERLY 
TRADE WINDS CONTINUE ACROSS THE CARIBBEAN WITH BROKEN/OVERCAST 
LOW CLOUDS WITH PATCHES OF FOG/HAZE/DRIZZLE WITHIN 75/100 NM OF 
LINE FROM 20N81W TO INLAND OVER HONDURAS NEAR NEAR 16N86W. AN 
UPPER RIDGE AXIS EXTENDS FROM ACROSS NICARAGUA TO THE DOMINICAN 
REPUBLIC/MONA PASSAGE INTO THE CENTRAL ATLC. STRONG SUBSIDENCE 
AND DRY AIR ALOFT ARE NOTED ON WATER VAPOR IMAGERY ACROSS THE 
ENTIRE BASIN AND ARE RESULTING IN CLEAR SKIES ACROSS THE 
REMAINDER OF THE CARIBBEAN. 

ATLANTIC OCEAN...
AS OF 24/0300 UTC...A COLD FRONT ENTERS THE W ATLC E OF BERMUDA 
NEAR 32N64W EXTENDING SW TO 24N71W BECOMING STATIONARY AS IT 
CONTINUES ACROSS THE S BAHAMA ISLANDS INTO THE CARIBBEAN THROUGH 
THE WINDWARD PASSAGE. SCATTERED SHOWERS/ISOLATED THUNDERSTORMS 
ARE WITHIN 250 NM E OF THE FRONT N OF 25N WITH ISOLATED SHOWERS 
POSSIBLE WITHIN 90 NM W OF THE ENTIRE FRONTAL BOUNDARY. THE 
UPPER LEVEL TROUGH SUPPORTING THIS FRONT COVERS THE W ATLC N OF 
24N W OF 60W TO THE FLORIDA E COAST. A SURFACE RIDGE DOMINATES 
MOST OF THE CENTRAL AND E ATLC ANCHORED BY A 1030 MB HIGH NEAR 
34N43W. A DISSIPATING COLD FRONT ENTERS THE FAR E ATLC THROUGH 
32N16W TO JUST W OF THE CANARY ISLANDS NEAR 27N20W. THE UPPER 
TROUGH ASSOCIATED WITH THIS FRONT COVERS MUCH OF THE E ATLC N OF 
17N E OF 33W TO THE COAST OF W AFRICA. HOWEVER...DUE THE STRONG 
SURFACE HIGH PRESSURE...THE ATLC E OF 55W IS EXPERIENCING FAIR 
WEATHER TONIGHT. 

FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

$$
WALLACE