000
AXPZ20 KNHC 230335
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SUN MAR 23 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 
0315 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG...2N77W 2N85W 5N92W 3N97W 6N107W
5N118W 6N127W 3N140W. SCATTERED MODERATE CONVECTION IS WITHIN
180 NM N OF THE AXIS BETWEEN 103W-107W...AND WITHIN 60 NM N 
OF THE AXIS BETWEEN 123W-128W.

...DISCUSSION...

A STRONG MID/UPPER LEVEL ANTICYCLONE MOVING SE ABOUT 15 KT IS
LOCATED NEAR 13N108W AND CONTINUES TO BE THE DOMINATE FEATURE
OF THE AREA. THE ANTICYCLONE CONTINUES TO DEFLECT EXTENSIVE 
MID/UPPER LEVEL MOISTURE NE AND E AROUND ITS NRN PERIPHERY 
AND TOWARDS SRN BAJA CALIFORNIA AND WRN MEXICO. AN UPPER
LEVEL CYCLONE W OF THE AREA NEAR 25N152W HAS ADVANCED VERY 
LITTLE TO THE E DUE THE ANTICYCLONE CREATING SOMEWHAT OF A 
BLOCKING PATTERN. A TROUGH ASSOCIATED WITH THE CYCLONE EXTENDS 
SEWD INTO THE AREA AT 13N140W AND THROUGH 8N131W SE TO 5N124W
TO 2N108W.

FURTHER TO THE E...A DEEP LAYER TROUGH EXTENDS SW FROM THE SW 
GULF OF MEXICO TO THE ISTHMUS OF THE GULF OF TEHUANTEPEC...AND 
FURTHER S TO NEAR 2N100W. MODERATE TO STRONG SUBSIDENCE AND 
RESULTING FAIR WEATHER CONDITIONS ARE PRESENT W OF THE TROUGH TO 
NEAR 115W.

A JET STREAM BRANCH IS TO THE SE OF THE TROUGH EXTENDING FROM
6N92W NE TO ACROSS CENTRAL AMERICA...AND INTO THE WRN CARIBBEAN
SEA. SATELLITE-DERIVED WINDS INDICATE THAT MAXIMUM WIND SPEEDS
ASSOCIATED WITH THE JET ARE REACHING 50 KT. THESE WINDS ARE
ADVECTING EXTENSIVE HIGH LEVEL MOISTURE NNE TO THE FAR SW
CARIBBEAN SEA.

AT THE SURFACE...
A NEARLY STATIONARY 1030 MB HIGH IS ANALYZED N OF THE REGION NEAR
35N131W WITH A RIDGE STRETCHING SE THROUGH 27N127W TO 23N119W TO 
20N114W. HIGH PRES COVERS THE AREA N OF 14N W OF 110W. THE PRE
GRADIENT ASSOCIATED WITH THE RIDGE IS PRODUCING NE-E 20 KT WINDS 
FROM 6N-27N W OF 130W...AND N-NE 20 KT N OF 27N BETWEEN 
119W-130W. SEAS HERE ARE RANGING 8-11 FT IN N-NE SWELL.

GAP WINDS...
NE-E 20 KT WINDS IN THE GULF OF PAPAGAYO ARE EXPECTED TO DIMINISH
IN ABOUT 36 HRS.

GULF OF TEHUANTEPEC WINDS HAVE DIMINISHED TO 20 KT...AND ARE 
FORECAST TO DIMINISH TO LESS THAN 20 KT IN 12 HRS BEFORE 
INCREASING ONCE AGAIN TO 20 KT BY LATE SUN NIGHT...AND UP TO GALE
FORCE (25-35 KT) MON AFTERNOON AS STRONG HIGH OVER THE NRN GULF
OF MEXICO CREATES A TIGHT RIDGE OVER SE MEXICO AND ITS ADJACENT 
COAST.

$$
AGUIRRE