000
AXPZ20 KNHC 080257
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC THU AUG 08 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0215 UTC.

...SPECIAL FEATURES...   
HURRICANE HENRIETTE IS CENTERED NEAR 17.0N 136.5W AT 0300 UTC 
AUG 08...OR ABOUT 1125 NM ESE OF HILO HAWAII...MOVING WNW AT 9 
KT. ESTIMATED CENTRAL PRESSURE IS 984 MB. MAXIMUM SUSTAINED WIND 
SPEED IS 75 KT WITH GUSTS TO 90 KT. NUMEROUS STRONG CONVECTION 
WAS OCCURRING WITHIN 70 NM NW AND 30 NM SE SEMICIRCLES... WITH  
SCATTERED MODERATE TO STRONG CONVECTION ELSEWHERE WITHIN 90 NM 
NW SEMICIRCLE AND 45 NM SE SEMICIRCLES. CONVECTION REMAINS 
STRONG NEAR THE CORE OF HENRIETTE...BUT CONTINUES TO DIMINISH 
ACROSS THE E AND NE PERIPHERY. HENRIETTE IS EXPECTED TO TURN 
MORE WLY BY MORNING...THEN TURN MORE WSW OVER THE NEXT FEW 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 08N74W TO 07.5N80W 
TO 10N86W TO 09N90W TO 10N110W TO 09N125W TO 11N128W...WHERE IT 
TERMINATES. SCATTERED MODERATE ISOLATED STRONG CONVECTION NOTED 
WITHIN 60 NM N AND 180 NM S OF TROUGH E OF 92W. SCATTERED 
MODERATE TO STRONG CONVECTION NOTED WITHIN 180 NM EITHER SIDE OF 
TROUGH BETWEEN 96W AND 112W. SCATTERED MODERATE ISOLATED STRONG 
CONVECTION NOTED WITHIN 240 NM EITHER SIDE OF TROUGH BETWEEN 
113W AND 130W.


...DISCUSSION...                                             
E OF 110W...WATER VAPOR IMAGERY INDICATES AN UPPER LEVEL LOW IS 
CENTERED NEAR 13N96W AND 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 99W AND 110W. 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 112W.

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