000
AXPZ20 KNHC 261517
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SAT JAN 26 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 8N83W TO 5N92W. ITCZ 5N92W TO 8N120W TO 
2N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION...
A BROAD FLAT UPPER LEVEL RIDGE WITH MOSTLY ZONAL FLOW OVER THE 
WESTERN  PORTION OF THE AREA IS W OF 125W. A 70-80 KT JETSTREAM 
WITH AXIS FROM 19N140W TO 18N115W. 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 115W. DOWNSTREAM 
UPPER LEVEL TROUGH EXTENDS FROM NW COAST OF THE BAJA PENINSULA 
TO 22N116W. AN UPPER LEVEL RIDGE EXTENDS FROM THE NW GULF OF 
MEXICO ACROSS CENTRAL MEXICO TO 12N100W WITH A NE-SW TROUGH 
EXTENDING FROM A CYCLONIC CIRCULATION OVER NORTHERN HONDURAS SW 
TO 5N85W. STRONG SUBSIDENCE IS ACROSS THE AREA S OF 17N E OF 
115W AS SUPPRESSED CONVECTION ALONG THE ENTIRE ITCZ.

STRONG NLY WINDS IN THE 20-30 KT RANGE TODAY WILL DECREASE TO 
LESS THAN 20 KT SUN.

NE WINDS 20-25 KT WILL CONTINUE THROUGH THE GULF OF PAPAGAYO 
THROUGH MON. OTHERWISE NW SWELL TO 11 FT ACROSS THE AREA W OF 
115W.

$$
DGS