000
AXPZ20 KNHC 191002
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON MAR 19 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 0845 UTC.

...ITCZ...
ITCZ ALONG  5N77W  3N91W  5N130W  4N140W.  SCATTERED MODERATE 
CONVECTION WITHIN 120 NM S OF AXIS FROM 101W TO 108W. 

...DISCUSSION...
UPPER LEVELS..
MID TO UPPER LEVEL TROUGH EXTENDS FROM 32N135W TO 25N140W WITH 
100 KT JET CORE ADVECTING MODERATE AMOUNT OF TROPICAL MOISTURE 
NE TO CONUS W COAST.  DOWNSTREAM...UPPER LEVEL ANTICYCLONIC FLOW 
N OF 10N PUSHES PLUME INTO SRN BAJA CALIFORNIA AND NRN MEXICO... 
TEXAS AND INTO NWRN GULF OF MEXICO.  WEAK UPPER TROUGH FROM 
20N100W TO 5N110W IS ONLY PERTURBATION IN FLATTENED RIDGE 
DOWNSTREAM.  AIR MASS ALOFT REMAINS FAIRLY DRY WITH ONLY MINOR 
CONVECTION ALONG ITCZ FROM 101W TO 108W. 

LOWER LEVELS...
BROAD SURFACE HIGH PRES 1023 MB HAS RIDGE EXTEND FROM 32N132W TO 
16N110W MAINTAINING BRISK TRADES W OF 130W.

GAP WINDS...GULF OF TEHUANTEPEC WIND SUBSIDING AS ATLC RIDGE 
PULLS E AND PRES OVER GULF OF MEXICO DECREASES.  WIND ACROSS 
GULFS OF PAPAGAYO AND FONSECA REMAIN UNABATED THROUGH FORECAST 
PERIOD.

$$
WALLY BARNES