000
AXPZ20 KNHC 262142
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC MON MAR 26 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 2045 UTC.

...ITCZ...
ITCZ AXIS ALONG THE LINE...5N77W 6N105W 5N140W.  SCATTERED 
MODERATE CONVECTION WITHIN 45 NM OF LINE 7N83W 4N88W.

...DISCUSSION...
MID/ UPPER TROUGH EXTEND FROM 32N103W TO 17N120W TO 12N140W WITH 
VERY DRY SUBSIDING AIR MASS WITHIN 360 NM NW OF AXIS.  UPSTREAM 
FLATTENED RIDGE CREST IMPORTS MODERATE AMOUNTS OF MOISTURE N OF 
25N W OF 112W.  JET CORE HEADING NE WITHIN 180 NM SE OF AXIS HAS 
WEAKENED CONSIDERABLY DOWN TO 90 KT BUT REMAINS AN ADVECTION 
FORCE WITH WIDE TROPICAL MOISTURE PLUME PART OF TROUGH MOVED 
OVER MEXICO INTO NW GULF OF MEXICO.  REMAINDER E PAC E OF 107W 
KEPT VERY DRY ALOFT AS UPPER LEVEL EXTENSION OF ATLC RIDGE 
MAINTAINS STRONG SUBSIDENCE OVER AREA.
 
AT THE SURFACE...
WEAK COLD FRONT APPROACHES NW CORNER OF E PAC SQUEEZING REMAINS 
OF SURFACE RIDGE AGAINST CALIFORNIA COAST INCREASING N-NW WINDS 
ALONG COASTAL WATERS INCLUDING GULF OF CALIFORNIA N OF 25N.  

GAP WINDS...N WIND TO 20 KT OVER AND JUST S OF GULF OF 
TEHUANTEPEC WILL DIMINISH TONIGHT.  NE WIND OF 20 KT IN GULF OF 
PAPAGAYO REGION DIMINISH TO LESS THAN 20 KT TONIGHT.

$$
WALLY BARNES