000
AXPZ20 KNHC 101513
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC THU APR 10 2008

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...
ITCZ AXIS IS CENTERED ALONG 8N83W 5N115W 4N130W 5N140W. NUMEROUS 
STRONG CONVECTION FROM 5N-80W BETWEEN 79W-85W. SCATTERED 
MODERATE TO STRONG CONVECTION WITHIN 120 NM N OF AXIS FROM
113W-130W.

...DISCUSSION...
UPPER LEVEL TROUGH EXTENDS FROM A CYCLONIC CIRCULATION OVER THE 
ROCKY MOUNTAINS THEN ACROSS NORTHERN BAJA CALIFORNIA INTO THE 
PACIFIC TO 22N127W...WITH MODERATE/STRONG SUBSIDENCE N OF 23N. 
INCREASED HIGH CLOUDINESS IS LOCATED S OF 23N DUE TO OUTFLOW 
FROM A CLOSED UPPER LOW SW OF HAWAII. AN UPPER HIGH IS CENTERED
NEAR 11N141W AND IS PRODUCING NW/N FLOW ALOFT W OF 122W. 
STATIONARY TROUGH IS LOCATED ALONG 120W. SLY FLOW E OF THE 
TROUGH IS ADVECTING ITCZ MOISTURE NORTHWARD.

LARGE UPPER HIGH IS CENTERED OVER THE YUCATAN PENINSULA WITH 
MODERATE/STRONG SUBSIDENCE COVERING MUCH OF SE MEXICO...NW 
CENTRAL AMERICA...AND THE ADJACENT WATERS. SHEAR AXIS EXTENDS 
FROM NICARAGUA TO AN UPPER LOW NEAR 9N107W AND SEPARATES THE
DRIER AIR TO THE N AND MORE ABUNDANT MOISTURE OVER THE DEEP 
TROPICS.

$$
DGS