000
AXPZ20 KNHC 092101
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SAT APR 09 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
2000 UTC.               

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...      

ITCZ AXIS EXTENDS FROM 04.5N90W TO 06N117W TO A 1009 MB LOW NEAR
06N126W TO 04N140W. SCATTERED MODERATE WITH EMBEDDED ISOLATED
STRONG CONVECTION IS OBSERVED FROM 01N TO 12N BETWEEN 106W AND
140W.

...DISCUSSION... 
                                  
A 1009 MB LOW IS CENTERED NEAR 30N123W...EMBEDDED IN AN UPPER-
LEVEL TROUGH THAT SUPPORTS A COLD FRONT THAT EXTENDS FROM
30N120W TO 24N124W TO 21N130W THEN WEAKENS FROM THAT POINT TO
18N140W. ALTHOUGH WINDS ARE 20 KT OR LESS...NW SWELL TO 11 FT IS
PROPAGATING OVER THE AREA OF DISCUSSION W OF THE FRONT. THE
FRONT IS EXPECTED TO CONTINUE WEAKENING AS IT MOVES E DURING THE
NEXT 24 HOURS. WITH THIS...WINDS AND SEAS WILL DECREASE/SUBSIDE
ALSO. IN 48 HOURS...ANOTHER FRONTAL BOUNDARY WILL APPROACH THE
NW PORTION OF THE BASIN GENERATING SEAS UP TO 9 FT IN A NW
SWELL. 

TRADE WIND SWELL WILL COMBINE WITH NW SWELL TO MAINTAIN COMBINED
SEAS BETWEEN 8 AND 9 FT GENERALLY FROM 06N TO 15N AND W OF 134W
DURING THE NEXT 48 HOURS.

GAP WINDS...

GULF OF TEHUANTEPEC...FRESH TO STRONG NE WINDS WILL CONTINUE
ACROSS THE AREA DURING HE NEXT 24 HOURS. SEAS WILL RANGE FROM 8
TO 9 FT AT PEAK WIND TIMES. 
 
GULF OF PAPAGAYO...THE PRES GRADIENT ACROSS THE WESTERN
CARIBBEAN AND CENTRAL AMERICA...COMBINED WITH ENHANCED
NOCTURNAL DRAINAGE FLOW THROUGH THE GAP WILL CAUSE NE TO E WINDS
TO PULSE FRESH TO STRONG ACROSS THE GULF OF PAPAGAYO EACH NIGHT
GENERALLY FROM 09N TO 12N AND E OF 90W DURING THE NEXT 48 HOURS.
SEAS WILL BUILD TO 10 FT DURING PEAK WIND TIMES...WITH AN 8 TO 9
FT SWELL PROPAGATING SEVERAL HUNDRED MILES W OF THE GAP. 

GULF OF PANAMA...FRESH N WINDS ARE FUNNELING THROUGH THE GULF OF
PANAMA REGION. WINDS WILL INCREASE BRIEFLY TO STRONG BY TONIGHT
AND PREVAILING THROUGH SUNDAY AFTERNOON. WAVE HEIGHT GUIDANCE
INDICATES THAT SEAS WILL REACH BETWEEN 6 AND 7 FT AT PEAK WIND
TIMES.

$$

ERA