000
AXPZ20 KNHC 010932
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC THU JAN 01 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. 
 
...SPECIAL FEATURES...                                        
HIGH PRES BUILDING ACROSS SOUTHERN MEXICO HAS TIGHTENED THE 
PRESSURE GRADIENT AND INCREASED THE WINDS THROUGH THE CHIVELA 
PASS INTO THE GULF OF TEHUANTEPEC TO GALE FORCE...WITH WINDS 30-
35 KT AND SEAS 8-12 FT. THE GALE WILL BE SHORT LIVED AND WINDS 
WILL DECREASE BELOW GALE FORCE BY THIS AFTERNOON...THEN FURTHER 
DECREASE TO 20 KT LESS BY EARLY FRI.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...              
MONSOON TROUGH FROM 6N78W TO 5N89W. ITCZ FROM 5N89W TO 6N105W TO 
5N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION...                                                 
AN UPPER LEVEL RIDGE OVER FAR WESTERN PORTION OF THE DISCUSSION 
AREA N OF 5N W OF 130W. DOWNSTREAM UPPER LEVEL TROUGH WITH AXIS 
FROM NORTHERN BAJA CALIFORNIA TO 19N112W 5N98W. SURFACE COLD 
FRONT EXTENDS FROM NW MEXICO TO CENTRAL BAJA CALIFORNIA TO 
27N127W. A 90-100 KT JETSTREAM ENTERS THE AREA AT  25N140W TO 
25N130W TO 17N116W. A 100-115 SWLY JETSTREAM IS ACROSS NW 
MEXICO. AN UPPER LEVEL RIDGE EXTENDS FROM THE GULF PANAMA N 
ACROSS CENTRAL AMERICA TO THE YUCATAN PENINSULA.

NE 20-30 KT WINDS ARE BLOWING THROUGH THE GULF OF PAPAGAYO WITH 
SEAS TO 8 FT. THE WINDS ARE FORECAST TO DECREASE TO 20 KT OR 
LESS LATE FRI NIGHT.

N OF 26N W OF 135W WINDS 20 KT OR LESS...HOWEVER MIXED SE AND NW 
SWELLS ARE IN THE 8-10 FT RANGE. HIGH PRES BECOMES STRONG JUST N 
OF THE AREA FRI NIGHT AND SE WINDS ONCE AGAIN INCREASE TO 20-25 
KT.

$$
DGS