000
AXPZ20 KNHC 270924
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                           
1045 UTC SAT APR 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 
MONSOON TROUGH 10N85W TO 7N93W. ITCZ 7N93W TO 7N110W TO
11N120W TO 9N140W. SCATTERED MODERATE ISOLATED STRONG
CONVECTION FROM 7N-14N BETWEEN 105W-117W.
     
...DISCUSSION... 
AN UPPER LEVEL TROUGH OVER THE FAR NW PORTION OF THE DISCUSSION
AREA FROM 32N133W TO 28N140W. MODERATE TO STRONG SUBSIDENCE
WITH DRY AND STABLE AIR AT THE MIDDLE AND UPPER LEVELS IS N
N OF 25N W OF 110W. A BROAD UPPER LEVEL RIDGE EXTENDS FROM
AN ANTICYCLONIC CIRCULATION CENTERED NEAR 10N105W TO 23N115W
WITH ANOTHER RIDGE EXTENDS EASTWARD TO CENTRAL AMERICA. UPPER
LEVEL DIFFLUENCE WITH THE ANTICYCLONE IS ENHANCING CONVECTION 
7N-14N BETWEEN 105W-117W. A 95-105 KT JETSTREAM OVER THE TOP
OF THE RIDGE EXTENDS FROM 24N125W ACROSS SOUTHERN BAJA CALIFORNIA
INTO MEXICO. 

SURFACE RIDGE IS ACROSS THE AREA N OF 15N W OF 110W. THE PRES
GRADIENT IS WEAK WITH WINDS 20 KT OR LESS AND SEAS LESS THAN
8 FT. TRADES ARE FORECAST TO PICK UP A LITTLE LATER TODAY AROUND
20 KT WITH SEAS TO 8 FT FROM 10N-15N W OF 125W. 

$$
DGS