000
AXPZ20 KNHC 241515
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE JAN 24 2012

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 7N78W 6N80W 6N92W. ITCZ 6N92W 7N110W 4N130W 
5N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION...
AN UPPER LEVEL ANTICYCLONIC CIRCULATION OVER THE FAR NW PART 
OF THE DISCUSSION AREA IS CENTERED NEAR 30N134W. AN UPPER TROUGH 
EXTENDS FROM 32N109W TO 22N120W TO S OF THE ANTICYCLONIC 
CIRCULATION AT 25N140W. UPPER MOISTURE IS SPREADING SE INTO THE 
AREA N OF 29N BETWEEN 119W AND 130W. OTHERWISE MODERATE TO 
STRONG SUBSIDENCE WITH DRY/STABLE AIR AT THE MIDDLE AND UPPER 
LEVELS IS ACROSS THE AREA N OF 17N W OF 115W. A 95-110 KT 
JETSTREAM ON THE W SIDE OF THE TROUGH AXIS FROM WESTERN ARIZONA 
THROUGH THE GULF OF CALIFORNIA TO 27N112W.

AN UPPER RIDGE EXTENDS FROM 10N110W TO 17N127W. SOME HIGH LEVEL 
MOISTURE IS WITHIN THE RIDGE AXIS. EXCEPT FOR A FEW SHOWERS 
ALONG THE ITCZ...MODERATE TO STRONG SUBSIDENCE COVERS THE AREA S 
OF 20N E OF 105W.

A SURFACE HIGH PRES...1028 MB...IS NEAR 31N134W AND MOVING NE 
WITH TIME. NE TRADES AT 20-25 KT ARE OBSERVED ALONG THE SOUTHERN 
PERIPHERY OF THE THE RIDGE FROM 6N-23N W OF 125W...WITH SEAS 8 
TO 12 FT. NW TO N WINDS TO 20 KT ARE OBSERVED OVER THE W COAST 
OF BAJA CALIFORNIA N OF 24N E OF 121W. 

NE WINDS 15-20 KT CONTINUE TO BLOW THROUGH GULF OF PAPAGAYO AND 
ARE EXPECTED TO CONTINUE THROUGH EARLY THU.

$$
DGS