000
AXPZ20 KNHC 300929
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED APR 30 2008

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

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...ITCZ...
ITCZ AXIS IS ALONG ALONG 05N. SCATTERED MODERATE TO STRONG 
CONVECTION IS WITHIN 75 NM OF THE COAST OF COLOMBIA NORTH OF 
2.5N.

...DISCUSSION...

UPPER LEVELS...
DEEP LAYER TROUGH IS OVER THE NORTHERN PART OF THE AREA NORTH OF 
LINE FROM THE MEXICO UNITED STATES BORDER TO 27N130W TO 26N135W 
TO 27N140W. THE AREA IS DRY AND CLOUD FREE IN THE MIDDLE AND 
UPPER LEVELS. THE TROUGH IS FORECAST TO REMAIN NEAR IN PLACE AND 
WEAKEN THROUGH 48 HOURS.

A MAINLY UPPER TROUGH IS OVER THE SOUTHWEST PART OF THE AREA 
SOUTH OF 20N WEST OF 135W. THE SOUTHERLY FLOW EAST OF THE TROUGH 
IS DIFLUENT ALOFT AND IS ENHANCING CONVECTION IN THE ITCZ WITH 
UPPER LEVEL MOISTURE BEING ADVECTED NORTHWARD TO 15N IN THE AREA 
WEST OF 120W.

REMAINDER OF THE AREA IS UNDER BROAD ANTICYCLONIC FLOW. A LARGE 
AREA OF DRY MIDDLE AND UPPER LEVELS IS WITHIN THE AREA NORTH OF 
15N EAST OF 120W.

SURFACE...
WEAK RIDGE IS NORTH OF 12N WEST OF 115W. REMAINDER OF THE AREA 
IS ANALYZED AS BROAD TROUGH.

GAP WINDS OF 20 TO 25 KNOTS IN THE GULF OF TEHUANTEPEC AND 20 
KNOTS IN THE GULF OF PAPAGAYO REGIONS WILL DIMINISH TO LESS THAN 
20 KT DURING THE DAY TODAY.

$$
LL