000
AXPZ20 KNHC 100907
TWDEP 

TROPICAL WEATHER DISCUSSION                  
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
0405 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0830 UTC. 

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

STRONG HIGH PRESSURE THAT WAS CENTERED OVER EASTERN MEXICO HAS 
SHIFTED INTO THE NW GULF OF MEXICO. THIS HAS SLIGHTLY LESSENED 
THE PRESSURE GRADIENT FOR WINDS FUNNELING INTO THE GULF OF 
TEHUANTEPEC. STRONG GALE FORCE WINDS REMAIN OVER THE GULF OF 
TEHUNATEPEC. WINDS WILL CONTINUE TO SLOWLY DIMINISH OVER THE 
NEXT COUPLE OF DAYS...TO BELOW GALE FORCE BY THU AFTERNOON...AND 
TO 20 KT OR LESS BY FRI AFTERNOON. SEAS ASSOCIATED WITH THIS GAP 
WIND 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. BY FRI EVENING...SEAS 
GREATER THAN 8 FT WILL REACH AS FAR W AS 117W.

GULF OF PAPAGAYO GALE WARNING

THE COLD FRONT RESPONSIBLE FOR THE STORM EVENT OVER THE GULF OF 
TEHUANTEPEC HAS PRODUCED A RARE GALE FORCE GAP WIND EVENT OVER 
THE GULF OF PAPAGAYO. WINDS OVER THE GULF OF PAPAGAYO HAVE 
REACHED 35 KT TONIGHT WITH THE HELP OF NOCTURNAL DRAINAGE FLOW. 
WINDS WILL DIMINISH BELOW GALE FORCE THU AFTERNOON.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
 
THE MONSOON TROUGH EXTENDS FROM 09N84W TO 07N87W WHERE LOW LEVEL 
WINDS SUGGEST A TRANSITION TO ITCZ WHICH EXTENDS TO 03N103W TO 
04N140W. SCATTERED MODERATE SCATTERED MODERATE CONVECTION IS 
FROM 02N TO 05N BETWEEN 88W AND 92W.

...DISCUSSION...                                                

ALOFT...A SMALL UPPER LEVEL LOW IS CENTERED JUST N OF THE NW 
CORNER NEAR 32N138W. AN UPPER LEVEL TROUGH IS N OF 26N AND W OF 
130W. THIS SYSTEM IS SUPPORTING A SURFACE LOW AND COLD FRONT 
OVER THE NW CORNER. A GOOD AMOUNT OF UPPER LEVEL MOISTURE AND 
BROKEN HIGH CLOUDS ARE SE OF THE TROUGH N OF 20N BETWEEN 110W 
AND 130W TO INCLUDE BAAJA CALIFORNIA DUE TO UPPER LEVEL 
DIFFLUENCE. A LARGE UPPER LEVEL HIGH IS CENTERED OVER THE 
TROPICS NEAR 06N127W. A RIDGE AXIS EXTENDS FROM THE HIGH CENTER 
TO N BAJA CALIFORNIA NEAR 32N115W. RIDGING IS ELSEWHERE W OF 
113W. FURTHER E...A LARGE UPPER LEVEL TROUGH IS BETWEEN 95W AND 
113W. AN UPPER LEVEL RIDGE IS E OF 95W WITH AXIS ALONG 90W. 

AT THE SURFACE...A SLOW MOVING COLD FRONT IS OVER THE NW CORNER 
FROM 30N134W TO 24N134W TO 19N140W. THIS FRONT HAS S TO SW WINDS 
20 TO 25 KT WITHIN 120 NM E OF FRONT AND WINDS 20 KT OR LESS W 
OF FRONT. SEAS TO 9 FT IN NW SWELL ARE ALONG THE FRONT. AN AREA 
OF FRESH TO STRONG TRADEWINDS LINGER FROM 06N TO 10N W OF 132W  
WITH SEAS TO 8 FT. ELSEWHERE...SOME 8 FT SW SWELL IS S OF 00N 
BETWEEN 105W AND 120W. 

A COLD FRONT OVER W PANAMA IS NOW PRODUCING N WINDS 20 TO 25 KT 
WITH SEAS LESS THAN 8 FT IN THE PACIFIC N OF 05N BETWEEN 78.5W 
AND 80W...INCLUDING GULF OF PANAMA. EXPECT THESE WINDS TO 
PERSIST FOR THE NEXT 24 HOURS.   

$$ 
FORMOSA