000
AXPZ20 KNHC 280926
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED FEB 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 
0830 UTC.

...ITCZ...
ITCZ AXIS ALONG 5N77W 7N86W 5N92W 2N97W 6N123W 5N131W 2N140W. NO 
SIGNIFICANT ACTIVITY NOTED.

...UPPER DISCUSSION...
MID TO UPPER TROPOSPHERIC TROUGH EXTENDING FROM NW COAST OF U.S. 
THROUGH NW PORTION OF AREA NEAR 26N135W TO W OF AREA CONTINUES 
TO FILL AS THE MID-LATITUDE SYSTEM MOVES E AROUND 25 KT. ZONAL 
FLOW CONTINUES OVER NRN AREA WITH 170 KT JET STREAK ALONG 31N 
PROGRESSING OVER CA/BAJA PENINSULA BORDER. MID TO UPPER RIDGE 
DOMINATES REMAINDER OF AREA WITH THE AXIS STRETCHING FROM CNTRL 
AMERICA THROUGH 17N120W TO 12N140W. LARGE SCALE MOISTURE PLUME S 
OF SUBTROPICAL JET NOW SPREADING INTO SW U.S. MODERATE TO STRONG 
SUBSIDENCE ASSOCIATED WITH AFOREMENTIONED RIDGE PERSISTS S OF 
16N AND E OF 115W. ITCZ ACTIVITY LIMITED TO ISOLATED SPOTS E OF 
90W AND W OF 135W.

...AT THE SURFACE...
MODERATE TO STRONG TRADES PERSIST W OF 130W WITH LITTLE CHANGE 
OVER NEXT FEW DAYS AS SUBTROPICAL HIGH EXPECTED TO MAINTAIN 
STRENGTH.
...GAP WINDS...
STRONG WINDS OF GALE FORCE OVER SW CARIBBEAN SHOULD TRIGGER A 20 
KT GULF OF PAPAGAYO EVENT DURING THE NEXT 24 HRS. 

$$
ROBERTS