000
AXPZ20 KNHC 170920
TWDEP 

TROPICAL WEATHER DISCUSSION                                     
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC TUE MAR 17 2015

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 
0900 UTC. 

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
            
ILL-DEFINED AXIS FROM 06N113W TO LOW PRES NEAR 11N122W 1013 MB 
TO 07N130W TO 06N140W. SCATTERED MODERATE CONVECTION FROM 08N TO 
11N BETWEEN 112W AND 119W.

...DISCUSSION... 

A MID-LEVEL TROUGH EXTENDING FROM 31N126W TO 13N130W TO 06N144W 
IS ENHANCING CLOUDS AND SHOWERS E OF THE TROUGH AXIS IN WESTERN 
WATERS. ASCAT SCATTEROMETER PASSES SHOW LIGHT WINDS WITH LITTLE 
CONVERGENCE OVER NEARLY THE ENTIRE AREA WITH A NOTABLE EXCEPTION 
IN THE GULF OF TEHUANTEPEC...WHERE A 0310 UTC PASS SHOWED SMALL 
AREA OF 30 KT WINDS N OF 15N IN THE REGION. HIGH PRESSURE IN THE 
GULF OF MEXICO WILL GRADUALLY FADE TODAY TO WEAKEN THE PRESSURE 
GRADIENT AND WINDS IN TEHUANTEPEC. WINDS TO DIP BELOW ADVISORY 
CRITERIA BY THIS EVENING...WITH SEAS BELOW 8 FT. THE GULF OF 
PAPAGAYO WILL ALSO SEE A DECREASE IN WINDS AND SEAS THROUGH 
TONIGHT AS HIGH PRES WEAKENS IN THE WESTERN CARIBBEAN. 

LOOKING AHEAD...A GRADUAL IMPROVEMENT IN SEA CONDITIONS WILL 
OCCUR AS WINDS REMAIN LIGHT TO MODERATE THROUGH THE END OF THE 
WEEK. BY SAT...A SLIGHT INCREASE IN TRADES W OF 125W WILL ALLOW 
SEAS TO BUILD TO 6-8 FT N OF THE ITCZ W OF 130W...WHILE WINDS 
ELSEWHERE REMAIN LIGHT...WITH SEAS GENERALLY LESS THAN 5-6 FT.

$$
MUNDELL