000
AXPZ20 KNHC 280914
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT APR 28 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 
0900 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG...4N77W 6N95W 8N140W.
SCATTERED MODERATE WITH ISOLATED STRONG CONVECTION IS WITHIN 75 
NM OF THE POINT 3.4N78.5W.

...DISCUSSION...
UPPER LEVELS...
TROUGH IS OVER BOTH THE NORTHEAST PART OF THE AREA AND THE 
NORTHWEST PART OF THE AREA.  CYCLONIC CIRCULATION IS CENTERED 
NEAR 29N110W AND COVERS NORTHWEST MEXICO AND THE ADJACENT AREA 
NORTH OF 20N EAST OF 122W.  THE AREA OVER THE OCEAN IS DRY AND 
CLOUD FREE IN THE MIDDLE AND UPPER LEVELS WITH OVERCAST 
STRATOCUMULUS IN THE LOWER LEVELS.  SOME CLOUDS ARE OVER THE 
MOUNTAINS OF MEXICO.  THE OTHER TROUGH IS NORTHWEST OF A LINE 
32N128W TO 21N140W. THIS AREA IS ALSO DRY AND CLOUD FREE IN THE 
MIDDLE AND UPPER LEVELS WITH OVERCAST STRATOCUMULUS IN THE LOWER 
LEVELS. THE REMAINDER OF THE AREA IS COVERED BY BROAD 
ANTICYCLONIC FLOW.  A PLUME OF MIDDLE AND UPPER LEVEL MOISTURE 
WITH BROKEN HIGH CLOUDS IS WEST OF A LINE FROM 30N130W TO 
20N120W TO THE ITCZ NEAR 132W.

SURFACE...
MODERATE RIDGE IS NORTH OF THE ITCZ WEST OF 100W.  ELSEWHERE 
BROAD TROUGH IS ANALYZED.

GAP WINDS...ELY TRADES OVER THE W CARIBBEAN WILL OCCASIONALLY 
SPREAD ACROSS THE CENTRAL AMERICA ISTHMUS IN THE GULF OF 
PAPAGAYO REGION FOR THE NEXT COUPLE OF DAYS.

$$
LL