000
AXPZ20 KNHC 232156
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SAT AUG 23 2008

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

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

...SPECIAL FEATURE...

TROPICAL STORM JULIO CENTERED NEAR 19.5N 108.5W AT 23/2100 UTC 
MOVING NW AT 10 KT. ESTIMATED MINIMUM CENTRAL PRESSURE IS 1007 
MB. MAXIMUM SUSTAINED WIND SPEED IS 35 KT WITH GUSTS TO 45 KT. 
SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS 
MIATCMEP1/WTPZ21 KNHC FOR MORE DETAILS. EASTERLY WINDS ALOFT 
OVER THE TROPICAL STORM ARE EXPECTED TO DECREASE SLIGHTLY OVER 
THE NEXT DAY OR TWO WHICH WILL ALLOW FOR SOME INTENSIFICATION. 
NUMEROUS STRONG CONVECTION IS LOCATED WITHIN 90 NM 19N109W. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION IS LOCATED 
ELSEWHERE WITHIN 240 NM OF CENTER.

...ITCZ...

ITCZ AXIS ALONG 10N79W TO 09N95W TO 15N110W TO 15N123W TO 
07N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION IS 
LOCATED WITHIN 30 NM EITHER SIDE OF LINE 06N86W TO 09N93W AND 
LINE 13N109W TO 11N121W AND LINE 11N113W TO 08N117W. SCATTERED 
MODERATE CONVECTION IS LOCATED WITHIN 90 NM OF 13N132W.

...DISCUSSION...

W OF 105W...
A LARGE MIDDLE/UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED 
IN THE VICINITY OF 25N136W AND IS MOVING SLOWLY W. RIDGING 
COVERS THE AREA N OF 17N W OF 126W AND WATER VAPOR IMAGERY 
INDICATES STRONG SUBSIDENCE IN THIS AREA. MOVING DOWNSTREAM AN 
ELONGATED MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS LOCATED NW 
OF TROPICAL STORM JULIO AND IS CENTERED NEAR 24N119W...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 240 NM SE AND 
WITHIN 180 NM NW SEMICIRCLES WINDS ARE TO 20 KT AND SEAS TO 8 FT.

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. AT THE SURFACE A 1010 MB LOW IS LOCATED 
NEAR 08N88W AND IS NEARLY STATIONARY.

$$
CAB