000
AXPZ20 KNHC 082131
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC MON AUG 08 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2115 UTC.

...ITCZ/MONSOON TROUGH...

MONSOON TROUGH FROM 11N86W TO 10N96W TO 14N103W TO 09N123W. ITCZ 
AXIS FROM 09N123W TO 09N140W. SCATTERED MODERATE ISOLATED STRONG 
CONVECTION IS LOCATED FROM 08N TO 13N BETWEEN 89W AND 112W.

...DISCUSSION...

N OF 18N...
A LARGE MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS LOCATED W OF 
THE DISCUSSION AREA IN THE VICINITY OF 31N148W AND IS NEARLY 
STATIONARY. MODERATE SOUTHERLY FLOW ALOFT IS LOCATED N OF 20N W 
OF 130W WITH SATELLITE DERIVED WINDS INDICATING SPEEDS IN THE 30 
TO 40 KNOT RANGE. MOVING DOWNSTREAM AN UPPER LEVEL ANTICYCLONIC 
CIRCULATION IS CENTERED OVER NW MEXICO NEAR 30N112W. WATER VAPOR 
IMAGERY INDICATES CLOCKWISE FLOW N OF ABOUT 18N E OF 128W INTO 
MEXICO. A 1012 MB SURFACE LOW...REMNANTS OF EUGENE...IS LOCATED 
NEAR 20N136W AND IS MOVING W AT 10 KT. WITHIN 210 NM NW 
SEMICIRCLE OF THE LOW WINDS ARE NE 20 TO 25 KT WITH SEAS 8 TO 10 
FT IN E SWELL. ELSEWHERE FROM 18N TO 26N W OF 133W WINDS ARE 
LESS THAN 20 KT WITH SEAS TO 9 FT IN E SWELL. IN 24 HOURS THE 
LOW WILL DISSIPATE. 

S OF 18N...
MODERATE EASTERLY FLOW ALOFT IS LOCATED OVER THE DEEP TROPICS S 
OF ABOUT 10N TO NEAR THE EQUATOR W OF 100W BECOMING LIGHT FROM 
10N TO 18N. LIGHT TO MODERATE EASTERLY TO NORTHEASTERLY FLOW IS 
LOCATED FROM THE EQUATOR NORTHWARD INTO CENTRAL AMERICA AND 
MEXICO E OF 100W. 

$$
CAB