000
AXPZ20 KNHC 261525
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC FRI AUG 26 2011

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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1515 UTC.

...ITCZ/MONSOON TROUGH...

MONSOON TROUGH 12N89W TO LOW PRES 18N112W TO 10N125W TO 13N133W 
TO 10N140W. SCATTERED MODERATE TO STRONG CONVECTION IS LOCATED 
FROM 13N TO 18N BETWEEN 99W AND 106W AND ALSO FROM 11N TO 15N 
BETWEEN 108W AND 115W.

...DISCUSSION...

A MIDDLE/UPPER LEVEL TROUGH COVERS THE AREA N OF 20N W OF 123W 
WITH THE AXIS ORIENTED NE TO SW FROM BEYOND 32N128W TO NEAR 
20N138W. WATER VAPOR IMAGERY INDICATES STRONG SUBSIDENCE IN THIS 
AREA. FURTHER DOWNSTREAM BROAD RIDGING ALOFT IS LOCATED N OF 20N 
E OF 120W INTO NORTHERN MEXICO. OVER THE TROPICS LIGHT EASTERLY 
WINDS ALOFT ARE LOCATED S OF 18N TO THE EQUATOR W OF 110W. AT 
THE SURFACE A 1005 MB LOW IS LOCATED NEAR 18N112W AND IS MOVING 
W 10 TO 15 KT. A STATIONARY 1023 MB HIGH IS LOCATED IN THE 
VICINITY OF 33N143W WITH A RIDGE EXTENDING SE TO 22N122W. 

OVER THE EASTERN PART OF THE DISCUSSION AREA...S OF 15N E OF 
110W...WINDS ALOFT ARE EASTERLY TO NORTHEASTERLY WITH SATELLITE 
DERIVED WINDS INDICATING SPEEDS UP TO 45 KT. EASTERLIES ARE 
FORECAST TO EXPAND WESTWARD TO 120W OVER THE NEXT 48 HOURS.

$$
CAB