000
AXPZ20 KNHC 081555
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SUN APR 08 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1515 UTC.

...ITCZ...
AXIS 6N77W 6N87W 8N104W 3N140W. SCATTERED MODERATE TO STRONG 
WITHIN 180 NM S OF THE AXIS E OF 81W. SCATTERED MODERATE WITHIN 
120 NM OF AXIS BETWEEN 97W TO 116W. 

...DISCUSSION...
MID/UPPER LEVEL SHORT WAVE TROUGH EXTENDING FROM 30N113W TO 
23N121W...PUSHING E THROUGH BAJA PENINSULA. SUBSIDENT DRY AIR 
WITHIN 180 NM OF BROAD UPPER TROUGH ORIENTED E-W ALONG 18N W OF 
130W. E OF 130W...S TO SW WINDS ALOFT ON PERIPHERY OF UPPER 
RIDGE OVER CARIBBEAN PROVIDING OUTFLOW TO CONVECTION ALONG ITCZ.

AT THE SURFACE...1022 MB HIGH PRES CENTERED NEAR 25N131W WITH 
FRESH NE TRADES TO THE S BETWEEN 5N AND 20N W OF 120W. NOTE...8 
TO 10 FT SEAS ARE NOTED OVER MUCH OF THE AREA ESPECIALLY S OF 
10N DUE TO SWELL. ENP WAVE MODEL INDICATES LONG PERIOD S TO SW 
CROSS EQUATORIAL SWELL TO ARRIVE ALONG THE CENTRAL AMERICAN AND 
MEXICAN PACIFIC COASTS LATE TONIGHT.

$$
CHRISTENSEN