000
AXPZ20 KNHC 081547
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1515 UTC.

...ITCZ/MONSOON TROUGH...

THE MONSOON TROUGH EXTENDS FROM 10N86W TO 10N94W TO 13N106W TO 
11N115W TO 08N124W...WHERE LOW LEVEL WINDS INDICATE THAT THE 
ITCZ AXIS EXTENDS TO 09N132W TO BEYOND 08N140W. SCATTERED STRONG 
CONVECTION IS LOCATED WITHIN 120 NM S OF THE MONSOON TROUGH 
BETWEEN 107W AND 110W...AND WITHIN 60 NM OF THE MONSOON TROUGH E 
OF 89W. SCATTERED MODERATE ISOLATED STRONG CONVECTION IS LOCATED 
FROM 07N TO 13N BETWEEN 96W AND 104W. SCATTERED MODERATE 
CONVECTION IS LOCATED WITHIN 120 TO 180 NM S OF THE MONSOON 
TROUGH BETWEEN 111W AND 126W...AND WITHIN 120 NM S OF THE ITCZ 
AXIS W OF 135W.  

...DISCUSSION...

N OF 18N...
A LARGE MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS LOCATED W OF 
THE DISCUSSION AREA NEAR 29N149W AND IS NEARLY STATIONARY. 
MODERATE SOUTHERLY FLOW ALOFT IS LOCATED N OF 20N W OF 128W 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. 
AN AREA OF SCATTERED TO STRONG CONVECTION IS LOCATED FROM THE 
SOUTHERN GULF OF CALIFORNIA SOUTHWARD ALONG THE MEXICAN COAST TO 
20N AND EXTENDING OFFSHORE ABOUT 120 NM. A 1012 MB SURFACE 
LOW...REMNANTS OF EUGENE...IS LOCATED NEAR 20N135W AND IS MOVING 
W AT 10 KT. WITHIN 240 NM NW SEMICIRCLE OF THE LOW WINDS ARE 20 
TO 25 KT AND SEAS 8 TO 11 FT. ELSEWHERE FROM 20N TO 27N W OF 
130W NE TO E WINDS ARE 20 KT WITH SEAS TO 9 FT. ALSO FROM 11N TO 
20N W OF 131W WINDS ARE LESS THAN 20 KT WITH SEAS TO 9 FT IN 
MIXED E TO SE SWELL.

S OF 18N...
MODERATE EASTERLY FLOW 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