000
AXPZ20 KNHC 011518
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC WED FEB 01 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 5N77W 5N94W. ITCZ FROM 5N94W 3N105W 5N140W. NO 
SIGNIFICANT CONVECTION.

...DISCUSSION...
AN UPPER LEVEL TROUGH WITH AXIS FROM 32N133W TO 17N140W. A BROAD 
UPPER LEVEL RIDGE IS N OF 15N E OF THE TROUGH. THE RIDGE IS 
BEING FURTHER FLATTED BY A SHORTWAVE TROUGH MOVING ACROSS 
SOUTHERN CALIFORNIA. CONSIDERABLE UPPER LEVEL MOISTURE IS MOVING 
THROUGH THE RIDGE FROM 15N-26N BETWEEN 130W-115W.

IN THE DEEP TROPICS UPPER LEVEL NEGATIVELY TILTED TROUGH EXTENDS 
FROM 15N98W TO EQUATOR AT 79W. ABUNDANT UPPER LEVEL MOISTURE IS 
N OF 10N E OF THE TROUGH WITH MODERATE TO STRONG SUBSIDENCE WITH 
DRY STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS S OF 10N E OF 
100W.

SURFACE SURFACE RIDGE COVERS THE AREA N OF 15N W OF 115W. NE 
TRADES AT 20 KT ARE OBSERVED ALONG THE SOUTHERN PERIPHERY OF THE 
THE RIDGE FROM 5N-15N W OF 120W...WITH SEAS TO 8 FT. NW SWELLS 
IN THE 8-12 FT RANGE ARE PROPAGATING THROUGH THE AREA N OF 15N W 
OF 130W.  

STRONG PRES GRADIENT CONTINUES ACROSS SOUTHERN MEXICO WITH NE 
WINDS 20-25 KT THROUGH THE GULF OF TEHUANTEPEC. THESE CONDITION 
ARE EXPECTED TO PERSIST FOR THE NEXT 48 HOURS. 

ELY WINDS 20-25 KT CONTINUE TO BLOW THROUGH THE GULF OF 
PAPAGAYO. THESE CONDITION ARE ALSO EXPECTED TO PERSIST FOR THE 
NEXT 48 HOURS. 

$$
DGS