000
AXPZ20 KNHC 280359
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC FRI NOV 26 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 
0300 UTC.

...ITCZ...
ITCZ AXIS ALONG 08N78W TO 05N100W TO 04N95W TO 08N133W TO 
08N140W.  SCATTERED MODERATE CONVECTION WITHIN 60 NM OF AXIS E 
OF 86W.  SCATTERED MODERATE CONVECTION WITHIN 120 NM N OF AXIS
W OF 122W.

...DISCUSSION...
DEEP LAYER LOW PRES TROUGH EXTENDS FROM 32N117W SW TO 17N130W 
THEN W TO 17N140W BRINGS VERY DRY AIR MASS W OF TROUGH AXIS TO  
E PAC.  WEAK 85 KT JET CORE PARALLELS TROUGH AXIS DOWNSTREAM 
ADVECTING LARGE AMOUNTS OF TROPICAL MOISTURE ACROSS E PAC INTO 
SRN BAJA CALIFORNIA AND N MEXICO...CONTINUING TO SE TEXAS 
FEEDING DEVELOPING FRONT OVER TEXAS. MID-UPPER LEVEL ANTICYCLONE 
CENTERED OVER COLOMBIA HAS RIDGE EXTEND W TO 15N107W MAINTAINING 
VERY DRY AIR MASS UNDER ITS UMBRELLA.  ONLY MINOR MOISTURE 
SNEAKS ALONG ITCZ E OF 86W.  

AT THE SURFACE...
PRES GRADIENT BETWEEN 1027 MB HIGH CENTER AT 32N149W AND WEAK 
TROUGH ALONG GULF OF CALIFORNIA TIGHTENS AS HIGH PRES DRIFTS E.  
N WINDS ALONG BOTH COASTS OF BAJA CALIFORNIA BECOMING STRONG 
WITHIN NEXT 48 HRS.  LARGE LONG PERIOD NW SWELLS SPREADING S 
THROUGH BASIN REACH EQUATOR AND W OF 119W. 

NE TRADE WINDS FROM 10-20N W OF 126W INCREASE AND LAST THROUGH 
FORECAST PERIOD AS HIGH PRES BUILDS IN.

GAP WINDS...
STRONG N WIND CONTINUE FUNNELING THROUGH ISTHMUS OF TEHUANTEPEC 
...BUT SUBSIDE QUICKLY WITHIN NEXT 18 HRS AS HIGH PRES OVER GULF 
OF MEXICO MOVES E AND REVERSES FLOW.  SIMILAR NE WINDS OCCURRING 
OVER GULF OF PAPAGAYO EXPECTED TO DIMINISH AS FLOW OVER NWRN 
CARIBBEAN VEER SE WITH ATLC RIDGE MOVING E.

$$
WALLY BARNES