000
AXPZ20 KNHC 271518
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SUN JAN 27 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 
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH AXIS 1N80W 8N85W TO 5N91W. ITCZ AXIS 5N91W TO 
8N120W TO 4N140W. NO SIGNIFICANT CONVECTION.


...DISCUSSION...
UPPER LEVEL TROUGH OVER THE FAR NW PORTION OF THE DISCUSSION 
AREA WITH AXIS FROM 32N133W TO 20N14W. E OF THE TROUGH A BROAD 
UPPER LEVEL FLAT RIDGE WITH MOSTLY ZONAL FLOW ACROSS THE RIDGE.  
A 70-95 KT JETSTREAM WITH AXIS FROM 14N140W TO 25N120W INTO THE 
SOUTHERN HALF OF THE BAJA PENINSULA. AN UPPER LEVEL TROUGH IS S 
OF 17N E OF 100W. HIGH LEVEL MOISTURE IS N OF 25N W OF 125W AND 
A FEW SHOWERS ARE FROM 6N-12N BETWEEN 119W AND 125W...OTHERWISE  
STRONG SUBSIDENCE WITH DRY AND STABLE AIR AT THE MIDDLE AND 
UPPER LEVELS IS ACROSS THE REMAINDER OF THE DISCUSSION AREA. THE 
SUBSIDENCE AS SUPPRESSED DEEP CONVECTION ACROSS THE ENTIRE AREA.

A SURFACE TROUGH IS ANALYZED ALONG THE ITCZ FROM 12N124W TO 
4N128W. THE FEW SHOWERS DESCRIBED ABOVE ARE W OF THE TROUGH.
OTHERWISE RIDGE DOMINATES THE AREA N OF 15N W OF 110W,

NE WINDS 20-25 KT WILL CONTINUE TO BLOW THROUGH THE GULF OF 
PAPAGAYO THROUGH TUE. OTHERWISE NW SWELL TO 10 FT ACROSS THE 
AREA W OF 115W.

$$
DGS