000
AXPZ20 KNHC 231600
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SAT AUG 23 2008

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1615 UTC.

...SPECIAL FEATURE...

TROPICAL DEPRESSION ELEVEN-E CENTERED NEAR 18.4N 107.6W AT 
23/1500 UTC MOVING NW AT 10 KT. ESTIMATED MINIMUM CENTRAL 
PRESSURE IS 1007 MB. MAXIMUM SUSTAINED WIND SPEED IS 30 KT WITH 
GUSTS TO 40 KT. SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO 
HEADERS MIATCMEP1/WTPZ21 KNHC FOR MORE DETAILS. EASTERLY WINDS 
ALOFT OVER THE DEPRESSION ARE EXPECTED TO DECREASE SLIGHTLY OVER 
THE NEXT DAY OR TWO WHICH WILL ALLOW FOR SOME INTENSIFICATION. 
NUMEROUS STRONG CONVECTION IS LOCATED FROM 16.5N TO 19.5N 
BETWEEN 107.5W AND 111W. SCATTERED MODERATE ISOLATED STRONG 
CONVECTION IS LOCATED ELSEWHERE FROM 15.5N TO 21N BETWEEN 107W 
AND 113W.

...TROPICAL WAVES...

A TROPICAL WAVE LOCATED N OF 06N ALONG 89W HAS BEEN MOVING W AT 
10 TO 15 KT. AN 1130 UTC QUIKSCAT PASS FROM THIS MORNING 
INDICATES A LOW MAY BE FORMING ALONG THE WAVE AXIS NEAR 09N. 
SCATTERED MODERATE CONVECTION IS LOCATED WITHIN 90 NM OF THE 
WAVE AXIS FROM 05N TO 15N. 

...ITCZ...

ITCZ AXIS ALONG 08N83W TO 08N92W TO 16N103W TO 14N123W TO 
07N140W. SCATTERED MODERATE CONVECTION IS LOCATED WITHIN 90 NM N 
OF AXIS FROM 128W TO 134W. 

...DISCUSSION...

W OF 105W...
A LARGE MIDDLE/UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED 
IN THE VICINITY OF 25N135W AND IS MOVING SLOWLY W. RIDGING 
COVERS THE AREA N OF 17N W OF 125W AND WATER VAPOR IMAGERY 
INDICATES STRONG SUBSIDENCE IN THIS AREA. MOVING DOWNSTREAM AN 
ELONGATED MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS LOCATED NW 
OF NEWLY FORM TROPICAL DEPRESSION ELEVEN-E AND IS CENTERED NEAR 
24N118W...MOVING W 10 TO 15 KT. STRONG SUBSIDENCE IS ALSO 
ASSOCIATED WITH THIS FEATURE. EASTERLY WINDS ALOFT COVER THE 
AREA S OF ABOUT 18N TO THE EQUATOR WITH SATELLITE CLOUD DRIFT 
WINDS MEASURING IN THE 35 TO 45 KT RANGE. AT THE SURFACE...THE 
REMNANTS OF ISELLE ARE ANALYZED AS A 1010 MB LOW NEAR 14N126W. 
WITHIN 180 NM NW SEMICIRCLE OF THE LOW WINDS ARE 20 KT AND SEAS 
8 FT. WITHIN 240 NM OVER THE SE SEMICIRCLE WINDS ARE 20 TO 25 KT 
AND SEAS 9 FT. SOUTHERLY SWELLS TO 9 FT ARE LOCATED S OF 12N 
FROM 100W TO 120W. 

E OF 105W...
THE EASTERLY WINDS ALOFT MENTIONED ABOVE CONTINUE OVER THE E 
PART OF THE DISCUSSION AREA WITH SATELLITE CLOUD DRIFT WINDS 
MEASURING 30 TO 40 KT.

$$
CAB