000
AXPZ20 KNHC 082121
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC THU MAY 08 2008

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

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE ALONG THE LINE...05N77W TO 
05N140W. NUMEROUS STRONG CONVECTION IS WITHIN THE AREA FROM 
03.5N TO 06N E OF 85W. SCATTERED MODERATE TO STRONG CONVECTION 
IS WITHIN 75 NM EITHER SIDE OF THE LINE FROM 03.5N102.5W TO 
10N112W.

...DISCUSSION...
UPPER LEVELS...
RIDGE CENTERED WEST OF THE AREA ALONG 30N EXTENDS OVER THE 
NORTHWEST PART OF THE AREA NORTH OF 22N WEST OF 133W. ELSEWHERE 
NORTH OF THE ITCZ AND WEST OF A LINE 32N120W TO 05N130W A TROUGH 
COVERS THE AREA. A LARGE CYCLONIC CIRCULATION IS EMBEDDED WITHIN 
THE TROUGH AND IS CENTERED NEAR 26.5N125W. THE CYCLONIC 
CIRCULATION IS FORECAST TO WEAKEN BUT THE OVERALL TROUGH WILL 
REMAIN THROUGH 48 HOURS. NORTH OF 15N THE TROUGH IS DRY AND 
CLOUD FREE IN THE MIDDLE AND UPPER LEVELS. BROKEN TO OVERCAST 
STRATOCUMULUS ARE IN THE LOWER LEVELS.

REMAINDER OF THE AREA IS UNDER BROAD ANTICYCLONIC FLOW.

THE AREA NORTH OF THE ITCZ FROM 105W TO 125W IS MOIST IN THE 
MIDDLE AND UPPER LEVELS WITH AREAS OF MULTI LEVEL BROKEN CLOUDS. 
ENHANCED CONVECTION IS WITHIN THE AREA NORTH OF THE ITCZ TO 10N 
FROM 105W TO 112W.

CONVECTION ALONG THE ITCZ EAST OF 85W IS ENHANCED WITH VERY COLD 
TOP CONVECTION IN THIS REGION.

SURFACE...
MODERATE RIDGE IS NORTH OF 10N WEST OF 109W. A TROUGH IS 
ANALYZED ALONG 111W NORTH OF THE ITCZ TO 13N. ELSEWHERE BROAD 
TROUGH IS ANALYZED.

GAP WINDS OF 20 KNOTS IN THE GULF OF PAPAGAYO REGION WILL 
CONTINUE THROUGH FRIDAY.

$$
LL