000
AXNT20 KNHC 141134
TWDAT 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL 
805 AM EDT SUN JUL 14 2013

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...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL 
ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1045 UTC.

...TROPICAL WAVES...                                             
A TROPICAL WAVE IS W OF THE CAPE VERDE ISLANDS EXTENDING FROM 
17N26W TO 7N26W MOVING W AT 15-20 KT. TOTAL PRECIPITABLE WATER 
IMAGERY SHOWS THE WAVE IS EMBEDDED WITHIN A HIGHLY MOIST 
ENVIRONMENT AT THE LOWER LEVELS. ISOLATED MODERATE CONVECTION IS 
WITH 120 NM OF THE WAVE AXIS.

A TROPICAL WAVE IS OVER THE CENTRAL TROPICAL ATLC WITH AXIS 
EXTENDING FROM 18N42W TO 6N41W MOVING W AT 10 KT. THIS WAVE IS 
EMBEDDED IN A MODERATE MOIST ENVIRONMENT. SCATTERED SHOWERS ARE 
WITHIN 180 NM OF THE WAVE AXIS. 
 
A TROPICAL WAVE IS OVER S MEXICO EXTENDING FROM 21N91W TO 13N93W 
MOVING W AT 10-15 KT. THE WAVE IS EMBEDDED IN A MODERATE TO HIGH 
MOIST ENVIRONMENT. SCATTERED MODERATE CONVECTION IS W OF THE 
WAVE AXIS OVER S MEXICO FROM 14N-19N BETWEEN 92W-96W.  
 
...ITCZ/MONSOON TROUGH...                                        
THE MONSOON TROUGH AXIS EXTENDS FROM 13N17W TO 10N20W. THE ITCZ 
AXIS EXTENDS FROM 10N20W TO 11N24W THEN RESUMES W OF THE 
TROPICAL WAVE FROM 10N28W TO 8N35W TO 10N40W. THE ITCZ RESUMES W 
OF ANOTHER TROPICAL WAVE AT 6N43W TO THE COAST OF BRAZIL AT 
2N51W. SCATTERED MODERATE CONVECTION IS WITHIN 120 NM OF THE 
ITCZ.

...DISCUSSION...

GULF OF MEXICO...                                               
A TROPICAL WAVE IS OVER S MEXICO WITH SCATTERED MODERATE 
CONVECTION. A 1014 MB HIGH IS OVER THE CENTRAL GULF OF MEXICO 
NEAR 26N88W. RADAR IMAGERY ALSO SHOWS ISOLATED MODERATE 
CONVECTION OVER S FLORIDA...THE STRAITS OF FLORIDA...AND W CUBA 
FROM 21N-27N BETWEEN 80W-83W. IN THE UPPER LEVELS... AN UPPER 
LEVEL TROUGH IS OVER THE GULF WITH AXIS ALONG 92W. UPPER LEVEL 
DIFFLUENCE IS NOTED OVER S FLORIDA. EXPECT CONTINUED UPPER LEVEL 
DIFFLUENCE FOR THE NEXT 24 HOURS OVER THE E GULF AND FLORIDA 
WITH CONVECTION AND SHOWERS. 
 
CARIBBEAN SEA...                                                
SCATTERED MODERATE TO ISOLATED STRONG CONVECTION IS OVER THE W 
CARIBBEAN FROM 16N-22N BETWEEN 84W-88W. ISOLATED MODERATE 
CONVECTION IS INLAND OVER CENTRAL AMERICA FROM HONDURAS TO S 
MEXICO. SCATTERED SHOWERS PERSIST OVER THE LEEWARD ISLANDS AND 
PUERTO RICO. MOSTLY FAIR WEATHER IS OVER THE REMAINDER OF THE 
CARIBBEAN. IN THE UPPER LEVELS...AN UPPER LEVEL HIGH IS CENTERED 
OVER THE NW CARIBBEAN. AN UPPER LEVEL RIDGE IS OVER THE E 
CARIBBEAN E OF 70W. EXPECT OVER THE NEXT 24 HOURS FOR THE 
TROPICAL WAVE TO CONTINUE TO MOVE W WITH CONVECTION. 
 
HISPANIOLA...                                                   
RECENT LIGHTNING DATA AND SATELLITE IMAGERY SHOW SHOWERS HAVE   
DIMINISHED OVER HISPANIOLA. EXPECT SHOWERS AND THUNDERSTORMS TO 
REDEVELOP OVER HISPANIOLA DURING THE AFTERNOON AND EVENING 
HOURS. 

ATLANTIC OCEAN... 
A SURFACE TROUGH IS OVER THE W ATLANTIC FROM 
31N70W TO 24N70W. SCATTERED SHOWERS ARE WITHIN 180 NM OF THE 
TROUGH AXIS. A 1024 MB HIGH IS CENTERED OVER THE E ATLANTIC NEAR 
30N32W. IN THE TROPICS...A TROPICAL WAVE IS W OF THE CAPE VERDE 
ISLANDS AND ANOTHER TROPICAL WAVE IS ALONG 42W. IN THE UPPER 
LEVELS...AN UPPER LEVEL LOW IS OVER THE W ATLANTIC NEAR 25N63W 
MOVING W AND SUPPORTING THE SURFACE TROUGH. EXPECT CONTINUED 
CONVECTION OVER THE W ATLANTIC AND BAHAMAS OVER THE NEXT 24 
HOURS. 

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

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FORMOSA