000
AXPZ20 KNHC 101531
TWDEP 

7TROPICAL WEATHER DISCUSSION                  NWS NATIONAL 
HURRICANE CENTER MIAMI FL                         1005 UTC THU 
APR 10 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC. 

...SPECIAL FEATURES...
       
GULF OF TEHUANTEPEC GALE WARNING

THE STRONG HIGH PRESSURE THAT WAS CENTERED OVER EASTERN MEXICO 
HAS WEAKEND SOME AND THE PRES GRADIENT ACROSS SOUTHERN MEXICO IS 
NOT AS STRONG AS YESTERDAY...HOWEVER STRONG GALE FORCE WINDS 
REMAIN OVER THE GULF OF TEHUANTEPEC. WINDS WILL CONTINUE TO 
SLOWLY DIMINISH OVER THE NEXT COUPLE OF DAYS AND BELOW GALE 
FORCE BY THIS AFTERNOON AND TO 20 KT OR LESS BY FRI AFTERNOON. 
SEAS ASSOCIATED WITH THIS EVENT CONTINUE TO SLOWLY SUBSIDE WITH 
SEAS NEAR 17 FT THIS EVENING. THE SWELL WILL CONTINUE TO SPREAD 
S AND W OVER THE NEXT COUPLE OF DAYS WHILE SLOWLY SUBSIDING.

GULF OF PAPAGAYO GALE WARNING

THE COLD FRONT RESPONSIBLE FOR THE STORM EVENT OVER THE GULF OF 
TEHUANTEPEC HAS PRODUCED A RARE GALE FORCE EVENT OVER THE GULF 
OF PAPAGAYO. WINDS OVER THE GULF OF PAPAGAYO HAVE REACHED 35 KT 
THIS MORNING. WINDS WILL DIMINISH BELOW GALE FORCE THIS 
AFTERNOON.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
 
ITCZ FROM 9N85W TO 3N110W TO 4N140W. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION WITHIN 90 NM N OF AXIS FROM 88W-96W.

...DISCUSSION...                                                

AN UPPER LEVEL CYCLONIC CIRCULATION IN THE FAR NW PORTION OF THE 
DISCUSSION AREA IS CENTERED NEAR 32N136W. AN UPPER LEVEL TROUGH 
EXTENDS FROM THE CYCLONIC CIRCULATION TO 27N140W. OTHERWISE AN 
UPPER LEVEL RIDGE IS ACROSS THE W PORTION OF THE AREA AND 
EXTENDS FROM AN ANTICYCLONIC CIRCULATION CENTERED NEAR 7N127W TO 
NORTHERN BAJA CALIFORNIA. A 130-150 KT JETSTREAM EXTENDS FROM 
25N140W TO 30N127W WHERE WINDS DECREASE TO 95-105 KT THEN 
CONTINUES TO NORTHERN BAJA CALIFORNIA. AN UPPER TROUGH E OF THE 
RIDGE WITH AXIS FROM NE MEXICO TO 15N106W TO THE EQUATOR AT 
110W. 

A 1009 MB LOW PRES IS CENTERED NEAR 30N138W...WITH AN OCCLUDED 
FRONT ENTERING THE AREA AT 32N134W TO 30N133W WHERE IT BECOMES A 
COLD FRONT TO 25N134W WHERE IT BECOMES STATIONARY TO 24N140W S 
SCATTERED SHOWERS ARE WITHIN 150 NM E OF THE FRONT. SEAS TO 9 FT 
IN NW SWELL N OF 25N W OF FRONT WILL SUBSIDE TO LESS THAN 8 FT 
LATER THIS AFTERNOON.

$$ 
DGS