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Eastern Pacific Tropical Weather Discussion (Text)



000
AXPZ20 KNHC 290926
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC SAT AUG 29 2015

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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC. 

...SPECIAL FEATURES...

HURRICANE JIMENA IS CENTERED NEAR 12.3N 124.8W AT 0900 UTC 
MOVING W OR 270 DEG AT 8 KT. MAXIMUM SUSTAINED WINDS 130 KT 
GUSTS 160 KT. ESTIMATED MINIMUM CENTRAL PRESSURE IS 938 MB. 
SATELLITE IMAGERY SHOWS IT HAS RAPIDLY INTENSIFIED OVER THE PAST 
6-12 HOURS WITH A WELL DEFINED EYE ABOUT 15 NM IN DIAMETER. 
NUMEROUS MODERATE TO STRONG CONVECTION IS WITHIN 100 NM OF THE 
CENTER. SCATTERED MODERATE TO STRONG CONVECTION ELSEWHERE WITHIN 
150 NM N AND 180 NM S SEMICIRCLES. JIMENA IS EXPECTED TO REMAIN 
A VERY POWERFUL HURRICANE THROUGH AT LEAST MON NIGHT. THE AREA 
OF TROPICAL FORCE WINDS AND 12 FT SEAS IS EXPECTED TO EXPAND 
SIGNIFICANTLY DURING THE NEXT 2 DAYS. REFER TO THE LATEST NHC 
FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMEP3/WTPZ23 KNHC 
FOR MORE DETAILS.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...           
THE MONSOON TROUGH AXIS EXTENDS FROM FROM 08N78W TO 10N90W TO A  
1008 MB LOW PRES NEAR 10N104W TO 08N112W. SCATTERED MODERATE 
ISOLATED STRONG CONVECTION FROM 06N TO 10N BETWEEN 94W AND 105W.

...DISCUSSION... 

STRONG WINDS ASSOCIATED WITH HURRICANE IGNACIO IN THE CENTRAL 
PACIFIC ARE W OF THE AREA. AN AREA OF 7-8 FT SWELL HAS SHIFTED 
WEST OF 140W DURING THE PAST 6 HOURS.

WEAK HIGH PRESSURE IS CENTERED NEAR 24N133W. A COLD FRONT 
ENTERING NW PORTION OF THE DISCUSSION AREA EXTENDS FROM 37N126W 
TO 30N134W TO 28N143W. SCATTEROMETER DATA INDICATES WINDS ARE 
FAIRLY LIGHT ON EITHER SIDE OF THE FRONTAL BOUNDARY. THE FRONT 
IS EXPECTED TO WEAKEN THROUGH TONIGHT THEN DISSIPATE SUN. AN 
AREA OF LOW PRESSURE NEAR 10N104W IS EXPECTED TO DRIFT WESTWARD 
AND MAY SLOWLY BECOME BETTER ORGANIZED THROUGH MON.  

OTHERWISE...OUTSIDE OF HURRICANE JIMENA A LARGE AREA OF GENTLE 
TO MODERATE TRADE WINDS PREVAIL N OF 17N. GENTLE TO MODERATE SLY 
WINDS OVER SOUTHERN WATERS S OF ABOUT 05N.  

GULF OF TEHUANTEPEC...N-NE WINDS WILL PULSE THROUGH THE GULF OF 
TEHUANTEPEC THE NEXT COUPLE OF DAYS. WINDS WILL PEAK AT  20-25 
KT THIS MORNING WITH SEAS TO 7-8 FT. WINDS WILL DIMINISH THIS 
AFTERNOON...AND ARE EXPECTED TO REMAIN 20 KT OR BELOW THROUGH 
EARLY NEXT WEEK.

$$
MUNDELL

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Page last modified: Saturday, 29-Aug-2015 09:26:56 UTC