000
AXPZ20 KNHC 242152
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC THU APR 24 2008

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

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2115 UTC.

...ITCZ...
ITCZ AXIS ALONG 05N77W 05N92W 06N104W 03N125W 03N136W 02N140W. 
SCATTERED MODERATE TO STRONG WITHIN 70 NM OF AXIS BETWEEN 86W 
AND 88W AND WITHIN 110 NM OF AXIS BETWEEN 107W AND 111W. WIDELY 
SCATTERED MODERATE WITHIN 60 NM OF AXIS BETWEEN 111W AND 118W 
AND WITHIN 75 NM OF AXIS BETWEEN 123W AND 132W. SCATTERED 
MODERATE WITHIN 40 NM OF AXIS W OF 135W.

...DISCUSSION...
STRONG MID TO UPPER TROPOSPHERIC ANTICYCLONE LOCATED OVER 
CENTRAL MX WITH ASSOCIATED RIDGE EXTENDING W ALONG 15N IS 
EXPECTED TO MAINTAIN STRENGTH THROUGH SAT AFTN...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 
137W...SPREADS N OF 14N.

AN UPPER LEVEL RIDGE EXTENDS FROM COLOMBIA WESTWARD OVER PANAMA 
AND COSTA RICA TO 09N115W. 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 13N95W. PRESSURE 
GRADIENT GENERATED BY THE HIGH AND LOWER PRESSURE OVER MEXICO IS 
PRODUCING NW WINDS OF 20-25 KT ALONG THE BAJA CALIFORNIA COAST.

$$
ROBERTS