000
AXPZ20 KNHC 020911
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON APR 02 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0845 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG THE LINE...5N77W 5N110W 3N140W. 
SCATTERED MODERATE CONVECTION IS WITHIN 60 NM OF THE POINT 
5.6N92.2W.

...DISCUSSION...

MIDDLE AND UPPER LEVEL TROUGH IS NORTH OF A LINE FROM 26N107W 
20N109W 14N120W 32N125W. THE TROUGH IS SLOWLY MOVING EAST OVER 
MEXICO. THE MIDDLE AND UPPER LEVELS ARE DRY AND CLOUD FREE 
WITHIN THE TROUGH AREA. A CYCLONIC CIRCULATION IS CENTERED NEAR 
27N115W. A PLUME OF UPPER LEVEL MOIST AIR WITH BROKEN UPPER 
CLOUDS IS WITHIN 480 NM SE OF TROUGH E OF 120W. 

THE AREA NORTH OF 20N WEST OF THE TROUGH IS COVERED BY A 
MODERATE RIDGE. SKIES ARE NOT DRY ALOFT WITHIN THIS REGION BUT 
THEY ARE CLOUD FREE IN THE MIDDLE AND UPPER LEVELS WITH OVERCAST 
STRATOCUMULUS IN THE LOWER LEVELS.

THE REMAINDER OF THE AREA IS COVERED BY WEAK RIDGE IN THE MIDDLE 
AND UPPER LEVELS.

THE AREA EAST OF A LINE 18N96W TO THE ITCZ NEAR 115W IS DRY 
ALOFT IN THE MIDDLE AND UPPER LEVELS EXCEPT FOR UPPER MOISTURE 
FROM ITCZ CONVECTION LOCATED FROM 91W TO 98W.

WEAK SURFACE RIDGE IS NORTH OF 13N WEST OF 112W. THE REMAINDER 
OF THE AREA IS ANALYZED AS A WEAK TROUGH.
 
EAST SURFACE WINDS OF 20 KT CAN BE EXPECTED NEAR THE NORTH COAST 
OF COSTA RICA AND THE SOUTHERN PART OF NICARAGUA INCLUDING THE 
GULF OF PAPAGAYO FOR THE NEXT 48 HOURS.

$$
LL