000
AXPZ20 KNHC 221519
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE MAY 22 2007

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...

INTERTROPICAL CONVERGENCE ZONE AXIS IS ALONG THE 
LINE...7N77W 8N95W 8N120W 6N140W. SCATTERED MODERATE WITH 
ISOLATED STRONG CONVECTION IS WITHIN 75 NM OF THE POINTS 7.7N93W 
AND 9N105.7W AND 7.5N110.2W. SCATTERED MODERATE TO STRONG 
CONVECTION IS WITHIN 50 NM EITHER SIDE OF THE LINE 14N108W 
10N113.5W.  SCATTERED MODERATE TO STRONG CONVECTION IS WITHIN 
THE AREA FROM 6.5N TO 9.5N FROM 117W TO 124W.

...DISCUSSION...

MIDDLE AND UPPER LEVEL TROUGH IS NORTH OF A LINE 25N105W 
20N125W. THIS AREA IS DRY AND CLOUD FREE IN THE MIDDLE AND UPPER 
LEVELS WITH OVERCAST STRATOCUMULUS IN THE LOWER LEVELS. THIS 
SYSTEM IS EXPECTED TO REMAIN IN PLACE THROUGH 48 HOURS.

REMAINDER OF THE AREA IS WEAK ANTICYCLONIC FLOW IN THE MIDDLE 
AND UPPER LEVELS.

THE ITCZ IS ACTIVE FROM 105W TO 130W WITH UPPER MOISTURE BUT FEW 
CLOUDS ADVECTING FROM THIS CONVECTION TO OVER SOUTHERN MEXICO 
AND CENTRAL AMERICA.

MODERATE RIDGE IS NORTH OF 15N WEST OF 125W AND A WEAK RIDGE 
ELSEWHERE NORTH OF THE ITCZ WEST OF 105W.  ELSEWHERE WEAK TROUGH 
IS ANALYZED. OVERCAST STRATOCUMULUS IS FROM 15N TO 25N WEST OF 
115W.  NORTH OF 25N WEST OF 125W BROKEN STRATOCUMULUS IS 
OBSERVED. 

$$
LL