000
AXPZ20 KNHC 200316
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC WED AUG 20 2008

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

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0245 UTC.

...ITCZ...

ITCZ AXIS ALONG 09N80W TO 10N100W TO 12N110W TO 10N125W TO 
09N140W. SCATTERED MODERATE ISOLATED STRONG CONVECTION IS 
LOCATED FROM 04N TO 10N BETWEEN 84W AND 91W AND FROM 05N TO 10N 
BETWEEN 95W AND 108W. 

...DISCUSSION...

W OF 105W...
A LARGE MIDDLE/UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED 
NEAR 25N115W AND IS NEARLY STATIONARY. THIS FEATURE COVERS THE 
AREA FROM MEXICO WESTWARD TO 130W FROM 15N TO 30N. MODERATE 
EASTERLY WINDS ARE LOCATED ON THE S SIDE OF THE CIRCULATION WITH 
SATELLITE CLOUD DRIFT WINDS INDICATING SPEEDS IN THE 30 TO 40 
KNOT RANGE. THE CIRCULATION IS FORECAST TO MOVE WNW OVER THE 
NEXT TWO DAYS. FURTHER UPSTREAM A MIDDLE/UPPER LEVEL TROUGH AXIS 
IS LOCATED THROUGH 32N125W TO BEYOND 23N140W. WEAK TO OCCASIONAL 
MODERATE EASTERLY WINDS ALOFT COVER THE TROPICS S OF 12N. AT THE 
SURFACE THE REMNANTS OF ISELLE IS LOCATED NEAR 17N120W 1007 MB 
AND MOVING SW 10 KT. WINDS ARE TO 20 KT WITHIN 180 NM OVER THE W 
SEMICIRCLE. THE EASTERLY WINDS ALOFT MENTIONED ABOVE ARE 
INHIBITING DEVELOPMENT. SOUTHERLY SWELLS TO 8 FEET ARE LOCATED S 
OF 05N BETWEEN 105W AND 125W.

E OF 105W...
EASTERLY WINDS ALOFT ARE MEASURING 35 TO 45 KT AS INDICATED BY 
CLOUD DRIFT WINDS IN THE AREA N OF 08N E OF 105W AND BECOME NE S 
OF 08N TO THE EQUATOR. THE SOUTHERLY SWELLS MENTIONED ABOVE ARE 
LOCATED S OF 05N BETWEEN 95W AND 105W. SWELLS ARE FORECAST TO 
INCREASE TO 10 FT OVER THE NEXT 48 HOURS.

$$
CAB