000
AXPZ20 KNHC 100926
TWDEP 

FROM FROTROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                          
1005 UTC WED APR 10 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...              
MONSOON TROUGH 10N85W TO 6N94W. ITCZ AXIS 6N94W 8N115W 4N130W
TO 04N140W. NUMORUS STRONG CONVECTION FROM 4N-7N BETWEEN 85W-88W.
SCATTERED MODERATE TO STRONG CONVECTION IS WITHIN 90 NM N AND 
40 NM S OF AXIS FROM 134W-140W.

...DISCUSSION...                                             
AN UPPER LEVEL RIDGE IN THE NW PORTION OF THE DISCUSSION AREA
EXTENDS FROM 30N138W TO 23N124W. DOWNSTREAM UPPER LEVEL TROUGH
EXTENDS FROM A STRONG CYCLONIC CIRCULATION OVER THE ROCKIES
ACROSS NW MEXICO TO OFF THE COAST OF CENTRAL BAJA CALIFORNIA.
OTHERWISE MOSTLY ZONAL UPPER LEVEL FLOW PATTERN FROM 19N-25N
E OF 125W. A 95-105 KT JETSTREAM IS FROM THE CENTRAL BAJA
PENINSULA INTO NORTHERN MEXICO WHERE WINDS INCREASE TO 110 KT.
MODERATE TO STRONG SUBSIDENCE WITH DRY AIR AT THE MIDDLE AND
UPPER LEVELS IS N OF 23N E OF 125W. IN THE DEEP TROPICS AN
AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED OFF THE
COAST OF NICARAGUA NEAR 11N87W WITH RIDGE FROM THE CENTER
ACROSS SOUTHERN MEXICO INTO THE GULF OF MEXICO.

SURFACE RIDGE IS ACROSS THE AREA N OF 15N W OF 110W. THE PRES
GRADIENT HAS RELAXED AND WINDS HAVE DECREASED TO 20 KT OR LESS
HOWEVER LARGE NW SWELLS TO 12 FT ACROSS THE NE PORTION OF THE
AREA AND 8-10 FT ELSEWHERE N OF 5N W OF 110W.

$$
DGS