000
AXPZ20 KNHC 072203
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL                           
2205 UTC WED AUG 07 2013

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2115 UTC.

...SPECIAL FEATURES...                                  
HURRICANE HENRIETTE IS CENTERED NEAR 16.7N 135.8W AT 2100 UTC OR 
ABOUT 1145 NM ESE OF HILO HAWAII...MOVING WNW AT 10 KT. 
ESTIMATED CENTRAL PRESSURE IS 983 MB. MAXIMUM SUSTAINED WIND 
SPEED IS 75 KT WITH GUSTS TO 90 KT. NUMEROUS STRONG WITHIN 90 NM 
N SEMICIRCLE AND 20 NM SE QUADRANT. SCATTERED MODERATE ISOLATED 
STRONG ELSEWHERE WITHIN 120 NM NE SEMICIRCLE AND 45 NM S 
QUADRANT OF CENTER. HENRIETTE IS EXPECTED TO CONTINUE WNW 
OVERNIGHT...THEN TURN MORE W ON THU THEN WSW OVER THE FOLLOWING 
DAYS WHILE GRADUALLY WEAKENING. SEE THE LATEST NHC 
FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP3/WTPZ23 KNHC 
FOR ADDITIONAL DETAILS.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...       THE 
MONSOON TROUGH EXTENDS FROM COLOMBIA NEAR 09N74W TO 07.5N80W TO 
11N98W TO 11N110W TO 10N126W...WHERE IT TERMINATES. SCATTERED 
MODERATE TO STRONG CONVECTION NOTED WITHIN 90 NM N AND 210 NM S 
OF TROUGH E OF 92W. SCATTERED MODERATE TO STRONG CONVECTION 
NOTED WITHIN 210 NM EITHER SIDE OF TROUGH BETWEEN 97W AND 108W. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION NOTED WITHIN 210 
NM N AND 180 NM S OF TROUGH BETWEEN 112W AND 128W. 

...DISCUSSION...  
                                              
E OF 110W...WATER VAPOR IMAGERY INDICATES AN UPPER LEVEL LOW IS 
CENTERED NEAR 12N94.5W THAT CONTINUES TO SHIFT SLOWLY WESTWARD 
UNDERNEATH A BROAD UPPER RIDGE ACROSS THE GULF OF MEXICO AND SE 
MEXICO. LOW TO MIDDLE LEVEL NORTHEAST TO EASTERLY FLOW ALOFT 
WEST OF THIS LOW AND ON THE SOUTHWESTERN PERIPHERY OF THIS UPPER 
RIDGE CONTINUES TO INITIATE CLUSTERS OF WIDELY SCATTERED TO 
SCATTERED MODERATE CONVECTION N OF THE MONSOON TROUGH TO 15N 
BETWEEN 98W AND 107W. OTHERWISE...MONSOONAL FLOW DOMINATES THE 
REGION S OF THE TROUGH AND AREAS TO THE WEST-SOUTHWEST...WITH S 
TO SW WINDS GENERALLY LESS THAN 20 KT AS DEPICTED BY RECENT 
SCATTEROMETER PASSES. EARLIER ALTIMETER PASSES ALSO INDICATED 
SEAS ARE GENERALLY LESS THAN 7 FT ACROSS THE AREA E OF 110W. 
ACTIVE CONVECTION DESCRIBED ABOVE PERSISTS ALONG AND S OF THE 
TROUGH E OF 104W.

W OF 110W...THE MAIN FEATURE IS HURRICANE HENRIETTE. PLEASE SEE 
THE LATEST NHC TROPICAL CYCLONE DISCUSSION ON HENRIETTE UNDER 
AWIPS/WMO HEADERS MIATCDEP3/WTPZ43 KNHC FOR A MORE IN DEPTH 
DISCUSSION. EXPECT SWELL RELATED TO HENRIETTE OF GREATER THAN 8 
FT GENERALLY FROM 14N TO 22N W OF 129W OVER THE NEXT COUPLE OF 
DAYS. OTHERWISE...BROAD HIGH PRESSURE IS CENTERED N OF THE AREA 
ANCHORED BY A PAIR OF 1024 MB HIGHS CENTERED NEAR 31N132W AND 
31N142W.

$$
STRIPLING