000
AXPZ20 KNHC 271513
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1605 UTC FRI DEC 27 2013

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

MONSOON TROUGH FROM 4N77W TO 3N80W TO 3N83W. ITCZ 3N83W TO 7N95W 
TO 8N115W TO 6N120W TO 7N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION... 

A LARGE UPPER LEVEL RIDGE OVER THE WESTERN PORTION OF THE 
DISCUSSION AREA IS N OF 5N W OF 115W. BROKEN/OVERCAST CLOUDS ARE 
WITHIN THE RIDGE WITH SOME SCATTERED SHOWERS W OF 135W. 
DOWNSTREAM UPPER LEVEL TROUGH EXTENDS FROM CYCLONIC CIRCULATION 
OVER SE NEW MEXICO ACROSS MUCH OF MEXICO TO THE EQUATOR AT 97W. 
A 85-95 KT NW JETSTREAM BETWEEN THE RIDGE AND THE TROUGH WITH 
AXIS FROM 32N117W INTO CENTRAL MEXICO AT 21N100W.

SURFACE TROUGH EXTENDS FROM 10N-15N ALONG 138W. OTHERWISE A WEAK 
RIDGE IS ACROSS THE N AREA N OF 14N W OF 120W. THE RIDGE WILL 
REMAIN NEARLY STATIONARY AND THE TROUGH WILL MOVE W.

LARGE NW SWELLS IN THE 8-10 FT RANGE ARE NW OF A LINE FROM 
30N135W TO 8N125W TO 10N140W. THE 8-10 FT SWELL WILL CONTINUE 
THROUGH SAT THEN SUBSIDE SOME ON SUN.

STRONG NLY WINDS IN THE 20-30 KT RANGE WITH SEAS 8-11 FT 
CONTINUE ACROSS THE GULF OF TEHUANTEPEC. WINDS AND SEAS WILL 
CONTINUE THROUGH SAT THEN DECREASE TO 20 KT LESS AND SEAS 
SUBSIDE TO LESS THAN 8 FT SUN.
 
$$
DGS