000
AXPZ20 KNHC 060910
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU APR 06 2006

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 5N78W 3N100W 5N120W 4N120W. SCATTERED MODERATE 
ISOLATED STRONG WITHIN 60 NM EITHER SIDE OF AXIS FROM 87W TO 95W 
AND FROM 123W TO 135W.

...DISCUSSION...
MID/UPPER LEVEL RIDGE IS N OF 20N BETWEEN 115W AND 135W. AN AREA 
OF MODERATE TO STRONG SUBSIDENCE...DRY AIR AT THE MID AND UPPER 
LEVELS OF THE ATMOSPHERE COVERS THE AREA WITHIN THE RIDGE FROM 
20N TO 30N. A SHARP MID/UPPER LEVEL TROUGH IS MOVING ACROSS THE 
SW U.S. EXTENDING FROM A CYCLONIC CIRCULATION WELL N OF THE AREA 
IN NORTHERN NEVADA SWD ACROSS NW MEXICO TO THE SOUTHERN BAJA 
PENINSULA. SW WINDS AHEAD OF THE TROUGH IS ADVECTING TROPICAL 
MOISTURE INTO N CENTRAL MEXICO AND TEXAS. 

AN UPPER LEVEL RIDGE EXTENDS W FROM VENEZUELA AND COLOMBIA INTO 
THE E PACIFIC. DIFFLUENCE ALOFT WITHIN THE RIDGE HAS MADE FOR A 
MORE ACTIVE ITCZ THEN THE PAST FEW DAYS. VERY DRY AIR COVERS 
MUCH OF MEXICO AND CENTRAL AMERICA FROM 10N-25N E OF 110W.

SURFACE HIGH PRES...1024 MB...IS CENTERED NEAR 26N130W...WITH 
RIDGE FROM THE HIGH TO 18N112W.

$$
DGS