000
AXPZ20 KNHC 250329
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC FRI APR 25 2008

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0245 UTC.

...ITCZ...
ITCZ AXIS ALONG 07N77W 07N83W 05N89W 05N96W 07N103W 02N124W 
03N140W. SCATTERED MODERATE TO ISOLATED STRONG FROM 03N TO 05N 
BETWEEN 83W AND 86W. SCATTERED MODERATE FROM 05N TO 08N BETWEEN 
104W AND 109W. SCATTERED MODERATE TO ISOLATED STRONG WITHIN 65 
NM N OF AXIS AND WITHIN 115 NM S OF AXIS BETWEEN 111W AND 116W. 
SCATTERED MODERATE WITHIN 55 NM OF AXIS W OF 136W.

...DISCUSSION...
STRONG MID TO UPPER TROPOSPHERIC ANTICYCLONE LOCATED OVER 
CENTRAL MX WITH ASSOCIATED RIDGE EXTENDING W ALONG 15N IS 
EXPECTED TO MAINTAIN STRENGTH THROUGH MOST OF SAT..PRODUCING 
MILD DRY CONDITIONS OVER MOST OF THE CENTRAL PORTION OF THE 
DISCUSSION AREA.  HIGH ZONAL FLOW PERSISTS OVER THE NORTHERN 
PORTION WITH A 80-90 KT SUBTROPICAL JET FINGER ENTERING NEAR 
23N140W...THEN PROPAGATING EASTWARD OVER NORTHERN MX. MID TO 
UPPER MOISTURE...WITH A FEW ISOLATED RAINSHOWERS N OF 13N W OF 
134W...SPREADS N OF LINE FROM 8N140W TO 21N106W.

AN UPPER LEVEL RIDGE EXTENDS FROM COLOMBIA WESTWARD OVER PANAMA 
AND COSTA RICA TO 09N112W. SUPPRESSED CONDITIONS ARE NOTED ALONG 
THE AXIS WITH MULTI-LAYERED CLOUDS EVIDENT S OF THE AXIS WITHIN 
THE DIFFLUENT SOUTHEASTERLY FLOW.

AT THE SURFACE...A 1029 MB HIGH PRES N OF THE AREA WITH 
ASSOCIATED RIDGE STRETCHING SE FROM THE HIGH TO 18N106W. 
PRESSURE GRADIENT CREATED BY THE HIGH AND LOWER PRESSURE OVER 
MEXICO CONTINUES TO PRODUCE NW WINDS OF 20-25 KT ALONG THE BAJA 
CALIFORNIA COAST N OF 25N.

$$
ROBERTS