000
AXPZ20 KNHC 181517
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SUN JUL 18 2010

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

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1500 UTC.

...ITCZ...

AXIS FROM 13N87W TO 13N90W AND THEN FROM 08N93W TO 07N104W TO 
12N112W AND THEN FROM 11N121W TO 08N129W TO 10N140W. NUMEROUS 
STRONG CONVECTION IS LOCATED FROM 10N TO 15N BETWEEN 89W AND 
100W. SCATTERED MODERATE ISOLATED STRONG CONVECTION IS LOCATED 
WITHIN A 60 NM RADIUS OF 08N127W AND FROM 09N TO 11N BETWEEN 
135W AND 140W.

...DISCUSSION...

N OF 20N...
A MIDDLE/UPPER LEVEL TROUGH IS LOCATED N OF ABOUT 20N W OF 132W 
WITH WATER VAPOR IMAGERY INDICATING STRONG SUBSIDENCE IN THIS 
AREA. AT THE SURFACE A TROUGH IS LOCATED THROUGH 32N140W TO 
30N138W TO BEYOND 23N140W. ELSEWHERE N OF 20N A LARGE 
MIDDLE/UPPER LEVEL RIDGE IS LOCATED E OF 132W INTO MEXICO WITH 
THE AXIS ALONG 31N. SATELLITE DERIVED CLOUD DRIFT WINDS ALOFT 
INDICATE EASTERLY FLOW UP TO 45 KNOTS OVER BAJA CALIFORNIA AND 
CONTINUING WEST TO 120W. NORTH WINDS TO 20 KNOTS AND SEAS TO 9 
FT IN N SWELL ARE FORECAST IN 48 HOURS IN THE AREA N OF 25N 
BETWEEN 120W AND 133W.

S OF 20N...
MODERATE EASTERLY WINDS ALOFT ARE LOCATED ROUGHLY S OF 12N E OF 
120W INTO CENTRAL AMERICA AND SOUTH AMERICA WITH SATELLITE 
DERIVED CLOUD DRIFT WINDS INDICATE SPEEDS AS HIGH AS 50 KNOTS. 
THESE WINDS WILL CONTINUE OVER THE NEXT TWO DAYS. THE REMNANTS 
OF TROPICAL DEPRESSION SIX-E ARE LOCATED NEAR 17N122W AND MOVING 
W 5 TO 10 KNOTS. SEAS 8 TO 11 FT IN S AND SW SWELL ARE LOCATED 
IN THE AREA BOUNDED BY 00N135W TO 17N133W TO 13N110W TO 00N93W 
TO 00N135W. THIS AREA WILL EXPAND TO S OF 22N BETWEEN 88W AND 
135W IN THE NEXT 48 HOURS. A STATIONARY 1011 MB SURFACE LOW IS 
LOCATED NEAR 12N95W.

$$
CAB