000
AXPZ20 KNHC 251516
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC FRI JAN 25 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 
1200 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 4N78W TO 7N85W TO 5N95W. ITCZ FROM 5N95W 
TO 7N115W TO 3N130W TO 6N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION...
A BROAD UPPER LEVEL RIDGE OVER THE NW PORTION OF THE AREA IS N 
OF 20N W OF 130W. HIGH LEVEL MOISTURE IS N OF 29N W OF 130W.
OTHERWISE STRONG SUBSIDENCE WITH DRY AND STABLE AIR AT THE 
MIDDLE AND UPPER LEVELS IS W OF 122W. DOWNSTREAM UPPER LEVEL 
TROUGH EXTENDS FROM A CYCLONIC CIRCULATION NEAR 30N123W TO 
16N124W. AN 80 KT JETSTREAM ON THE E SIDE OF THE TROUGH WITH 
AXIS FROM 23N118W ACROSS BAJA CALIFORNIA INTO THE SW U.S.
DEEP LAYER MOISTURE WITH SCATTERED SHOWERS IS N OF 17N BETWEEN 
115W AND 120W. UPPER LEVEL RIDGE EXTENDS FROM THE GULF OF MEXICO 
ACROSS CENTRAL MEXICO TO 10N105W WITH AN E-W TROUGH EXTENDING 
FROM THE NW CARIBBEAN ACROSS THE YUCATAN PENINSULA TO 10N95W. 
EXCEPT FROM SCATTERED SHOWERS FROM 6N-8N BETWEEN 82W-87W STRONG 
SUBSIDENCE IS ACROSS THE AREA E OF 105W.

GALE FORCE WINDS CONTINUE TO BLOW THROUGH THE GULF OF 
TEHUANTEPEC ARE FORECAST TO DECREASE TO LESS THEN GALE FORCE 
LATER THIS AFTERNOON. HOWEVER THE NLY WINDS WILL REMAIN STRONG 
IN THE 20-30 KT RANGE THROUGH SAT THEN DECREASE TO LESS THAN 20 
KT SUN.

NE WINDS 20-25 KT WILL CONTINUE THROUGH THE GULF OF PAPAGAYO 
THROUGH SUN. OTHERWISE NW SWELL TO 12 FT ACROSS THE AREA W OF 
115W.

$$
DGS