000
AXPZ20 KNHC 300906
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL                          
1005 UTC THU JAN 30 2014

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 FEATURE...

GULF OF TEHUANTEPEC GALE WARNING...STRONG HIGH PRESSURE BUILDING 
SOUTHWARD INTO SOUTHERN MEXICO BEHIND A COLD FRONT MOVING 
THROUGH THE GULF OF MEXICO IS CREATING A VERY TIGHT PRESSURE 
GRADIENT ACROSS ACROSS SOUTHERN MEXICO. GALE FORCE WINDS ARE 
OVER THE GULF OF TEHUANTEPEC. WINDS ARE FORECAST TO DECREASE 
BELOW GALE FORCE TONIGHT...AND TO LESS THAN 20 KT FRI 
AFTERNOON.

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

MONSOON TROUGH FROM 6N78W TO 3N80W TO 5N97W. ITCZ FROM 5N97W TO 
7N105W TO 6N140W. NO SIGNIFICANT CONVECTION. 

...DISCUSSION...

UPPER LEVEL RIDGE EXTENDS FROM THE SW U.S. ACROSS CENTRAL BAJA 
CALIFORNIA TO 10N135W. MODERATE TO STRONG SUBSIDENCE DRY AND 
STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS N OF 15N BETWEEN 
100W AND 130W. UPPER LEVEL TROUGH WITH AXIS FROM NE MEXICO NEAR 
BROWNSVILLE TEXAS TO A CYCLONIC CIRCULATION NEAR 14N118W 
CONTINUES TO 11N125W. A SW 90-100 KT JETSTREAM IS ACROSS CENTRAL 
MEXICO. AN UPPER LEVEL RIDGE EXTENDS FROM AN ANTICYCLONIC 
CIRCULATION FROM THE EQUATOR AT 82W ACROSS CENTRAL AMERICA INTO 
THE CARIBBEAN. 

SURFACE RIDGE COVERS THE AREA N OF 17N W OF 115W. BROKEN TO 
OVERCAST STRATOCUMULUS CLOUDS ARE WITHIN THE RIDGE. NW SWELL 
CONTINUES ACROSS THE AREA GENERALLY W OF 120W WITH SEAS 8 TO 10 
FT. THE AREA OF SWELL DECREASE IN SIZE THROUGH THE NEXT 48 HOURS.

ELY WINDS ARE FORECAST TO INCREASE TO 20-25 KT THROUGH THE GULF 
OF PAPAGAYO LATER THIS MORNING...THEN DECREASE TO 20 KT OR LESS 
SAT NIGHT.

$$
DGS