000
AXPZ20 KNHC 261614
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SAT JAN 26 2008

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

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1530 UTC.
 
...ITCZ...

ITCZ AXIS IS CENTERED ALONG AXIS 5N77W 7N86W 6N98W 9N125W 8N140W. 
SCATTERED MODERATE CONVECTION FROM 3N TO 5N E OF 79W.

...DISCUSSION...

W OF 110W...
THE MAIN WEATHER MAKER CONTINUES TO BE A DEEP UPPER TROUGH EXTENDING 
FROM 34N130W TO 20N132W. AN ASSOCIATED 1000 MB SURFACE LOW IS 
CENTERED N OF THE DISCUSSION AREA NEAR 34N131W. A TIGHT GRADIENT 
REMAINS BETWEEN THE LOW PRES AND A 1036 MB HIGH PRES CELL OVER THE N 
CENTRAL PACIFIC. THIS IS RESULTING IN NLY GALE FORCE WINDS REACHING 
AS FAR S AS 30N. A COLD FRONT ASSOCIATED WITH THE SURFACE LOW 
EXTENDS FROM 30N127W TO 22N133W TO 21N140W. GALE FORCE WINDS PERSIST 
BETWEEN THE FRONT AND THE BAJA COAST. THE UPPER TROUGH WILL DIG 
SLIGHTLY MORE TO THE SE TODAY...THEN GRADUALLY LIFT OUT TO THE NE 
THROUGH SUN. THE ASSOCIATED SURFACE LOW WILL ACCORDINGLY DIG A 
LITTLE FURTHER S BEFORE LIFTING NE TO THE CALIFORNIA COAST. GALE 
CONDITIONS ON THE W SIDE OF THE LOW WILL PUSH S OF 30N THIS 
AFTERNOON...THEN DIMINISH THROUGH SUN. MEANWHILE FURTHER S...A 1011 
MB SURFACE LOW AND TROUGH ARE EVIDENT NEAR 13N123W...BENEATH UPPER 
DIVERGENCE SE OF THE UPPER TROUGH. FRESH TRADES N OF THE TROUGH/LOW 
ARE DIMINISHING AS THE LOW TO THE N DIGS S. MEANWHILE...LARGE NWLY 
SWELL CONTINUES TO PROPAGATE INTO THE AREA...AND WILL REACH 10N BY 
LATE SUN.

E OF 110W...
GAP WINDS PERSIST IN GULF OF TEHUANTEPEC AND PAPAGAYO...DUE TO HIGH 
PRES BUILDING INTO THE GULF OF MEXICO AND STRONG ELY WINDS OVER THE 
CARIBBEAN. STRONG NELY WINDS OFF THE CARIBBEAN COAST OF COLOMBIA 
CONTINUE TO FILTER THROUGH PANAMA...BRINGING FRESH TO STRONG NLY 
FLOW THROUGH THE GULF OF PANAMA. CONVERGENCE OF THESE WINDS WITH 
CROSS-EQUATORIAL SLY FLOW IS SPARKING AN AREA OF MODEST CONVECTION 
OFF THE PACIFIC COAST OF COLOMBIA. FURTHER N...FRESH WINDS PERSIST 
IN THE SOUTHERN GULF OF CALIFORNIA...BETWEEN WEAK SURFACE HIGH PRES 
OFF THE SOUTHERN BAJA COAST AND THE MEXICAN HIGHLANDS TO THE E. 
THESE WINDS WILL DIMINISH AS THE HIGH PRES SHIFTS E AHEAD OF THE 
APPROACHING COLD FRONT. 

$$
CHRISTENSEN