000
AXPZ20 KNHC 032129
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SUN APR 03 2016

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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2100 UTC.               

...SPECIAL FEATURES...

...GULF OF TEHUANTEPEC GALE WARNING... 
A 1026 MB HIGH CENTER LOCATED JUST W OF TAMPICO EXTENDS A RIDGE
SSE TO OVER SOUTHEASTERN MEXICO. THE ASSOCIATED TIGHT PACKING OF
ISOBARS OVER SE MEXICO IS FACILITATING STRONG TO GALE FORCE N-NE
WINDS TO FUNNEL S THROUGH THE CHIVELA PASS...AND OUT OVER THE
GULF OF TEHUANTEPEC. THE LEADING ARC CLOUD OF THESE WINDS IS
SEEN ON SATELLITE IMAGERY PROPAGATING SW WELL S OF THE GULF TO
NEAR 09N. WIND SPEEDS ARE 30-40 KT WITH SEAS OF 9-15 FT WITHIN
45 NM EITHER SIDE OF A LINE FROM 16N95W TO 14.5N95W TO
13.5N95.5W. N-NE 25-30 KT ARE ELSEWHERE WITHIN 75 NM EITHER SIDE
OF A LINE FROM 16N95W TO 14.5N95W TO 12.5N96.5W WITH SEAS OF 8-
10 FT. THE GALE IS FORECAST TO PERSIST THROUGH THE NEXT 48
HOURS. 

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 
      
ITCZ AXIS EXTENDS FROM 03N118W TO 02N130W TO 03N140W.
NO SIGNIFICANT CONVECTION IS NOTED.

...DISCUSSION... 

HIGH PRES OF 1023 MB CENTERED NEAR 34N126W EXTENDS A RIDGE SE TO
NEAR 20N113W. THE PRES GRADIENT BETWEEN THIS AREA OF HIGH PRES
AND LOWER PRES IN THE VICINITY OF THE ITCZ IS MAINTAINING FRESH
NE TRADES OVER THE WATERS FROM 05N TO 17N W OF 120W. A SURFACE
TROUGH LIES FROM 13N111W TO 04N113W. LOW-LEVEL CONVERGENCE
ASSOCIATED WITH THE TROUGH IS GENERATING SCATTERED MODERATE
CONVECTION WITHIN 180 NM EITHER SIDE OF THE TROUGH.  

NW SWELL IS PROPAGATING THROUGH THE AREA AND MERGING WITH
SHORTER PERIOD NE SWELL WITH SEAS GREATER THAN 8 FT COVERING
MUCH OF THE FORECAST WATERS N OF 06N W OF 120W. THE NW SWELL
WILL SUBSIDE OVER THE FORECAST WATERS OVER THE NEXT COUPLE OF
DAYS. BY EARLY MON COVERAGE OF SEAS GREATER THAN 8 FT WILL
SHRINK TO AN AREA FROM 05N TO 10N W OF ABOUT 120W.

OTHER GAP WINDS...EASTERLY WINDS FROM THE CARIBBEAN SEA WILL
ALLOW FOR NE-E 20-25 KT WINDS OVER THE GULF OF PAPAGAYO THIS
EVENING. WINDS OVER THE GULF OF PAPAGAYO WILL REMAIN 20-25 KT
FOR THE NEXT 28 HOURS WITH SEAS LESS THAN 8 FT.

$$
FORMOSA