000
AXPZ20 KNHC 200955
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON MAR 20 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 
0945 UTC.

...ITCZ...
ITCZ AXIS IS ALONG 2N78W 2N87W 6N107W 4N140W. SCATTERED MODERATE 
WITHIN 90 NM OF AXIS BETWEEN 86W AND 93W.

...DISCUSSION...
A SHORTWAVE TROUGH EXTENDS INTO AREA ALONG 32N112W 17N140W 
ACCOMPANIED BY DRY UPPER AIR NW OF THE TROUGH AXIS. AN UPPER 
ANTICYCLONE IS ESTIMATED NEAR 9N95W WITH A RIDGE EXTENDING N 
ACROSS THE CENTRAL GULF OF MEXICO. A 600 NM WIDE MOISTURE PLUME 
IS SQUEEZED BETWEEN THE TROUGH AND RIDGE...AND CONTINUES TO 
ADVECT MOISTURE ACROSS NORTHERN MEXICO INTO THE S CENTRAL CONUS 
WITH TSTMS FLARING OVER E TEXAS.    

TSTMS ARE ENHANCED UNDER THE UPPER RIDGE ALONG THE ITCZ BETWEEN 
86W AND 93W OTHERWISE DRY UPPER AND SUBSIDENCE DOMINATES THE 
DISCUSSION AREA E OF LINE 5N140W 13N105W 25N90W. 

$$
NELSON