000
AXPZ20 KNHC 181519
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SUN FEB 18 2007

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 
1500 UTC.

...ITCZ...

INTERTROPICAL CONVERGENCE ZONE IS ALONG LINE...4N77W 2N95W 
6N110W 7N125W 3N140W.
SCATTERED MODERATE WITH ISOLATED STRONG CONVECTION IS WITHIN 150 
NM OF THE POINT 4.3N88.1W. SCATTERED MODERATE CONVECTION IS 
WITHIN 50 NM EITHER SIDE OF THE AXIS FROM 112W TO 126W.

...DISCUSSION...

UPPER LEVELS...
TROUGH IS NORTH OF 20N WITH AN AXIS ALONG A LINE FROM 30N110W TO 
20N140W.  EMBEDDED SHORTWAVE IS ALONG LINE 32N125W 24N136W.  THE 
ASSOCIATED CLOUDS HAVE MOVED NORTHEAST OVER THE SOUTHWESTERN 
U.S. AND THE AREA IS CLEAR BUT NOT DRY IN THE MIDDLE AND UPPER 
LEVELS.

THE REMAINDER OF THE AREA NORTH OF THE ITCZ IS COVERED BY MIDDLE 
AND UPPER LEVEL RIDGE AND IS ALSO CLEAR IN THE MIDDLE AND UPPER 
LEVELS.  SOME UPPER LEVEL MOISTURE IS NORTH OF THE ITCZ 
CONVECTION TO 13N FROM 118W TO 130W.  

SURFACE...
MODERATE RIDGE IS NORTH OF 10N WEST OF 120W.  REMAINDER OF THE 
AREA IS ANALYZED AS A BROAD TROUGH.

OVERCAST STRATOCUMULUS ARE NORTH OF A LINE FROM 32N118W TO 
25N120W 15N140W.

GAP WINDS...
WINDS TO STORM FORCE ARE FORECAST FOR THE TEHUANTEPEC REGION FOR 
24 HOURS WITH WINDS DECREASING TO LESS THAN GALE FORCE RAPIDLY 
BY 30 HOURS.

WINDS TO GALE FORCE ARE FORECAST FOR THE PAPAGAYO REGION WITH 
THE WINDS DECREASING TO LESS THAN GALE FORCE IN 36 OURS.

$$
LL