000
AXPZ20 KNHC 010907
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC FRI MAY 01 2015

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 FROM 9N97W TO 7N105W TO LOW PRES 1009 MB NEAR 
8N120W TO 7N129W. ITCZ 7N129W TO 6N140W. SCATTTERED MODERATE TO 
STRONG CONVECTION FROM 2N-11N BETWEEN 100W-117W.

...DISCUSSION...    

AN UPPER LEVEL TROUGH ACROSS THE FAR NW PORTION OF THE 
DISCUSSION AREA FROM 32N136W TO 30N140W. A MOSTLY ZONAL FLOW 
WITH A 95-100 KT JETSTREAM EXTENDING FROM 21N140W TO 25N120W 
INTO CENTRAL MEXICO. STRONG SUBSIDENCE WITH DRY AND STABLE AIR 
AT THE MIDDLE AND UPPER LEVELS N OF 18N W OF 110W. IN THE DEEP 
TROPICS AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 
11N114W. UPPER LEVEL DIFFLUENT ASSOCIATED WITH THE ANTICYCLONE 
IS ENHANCING CONVECTION FROM 2N-11N BETWEEN 100W-117W.

A SURFACE RIDGE IS N OF 15N W OF 120W. NLY SWELL 8-10 FT IS 
ACROSS THE NW PORTION OF THE AREA. N WINDS 20-25 KT WILL 
CONTINUE TO BLOW THROUGH THE GULF OF TEHUANTEPEC THROUGH THE 
NEXT 48 HOURS. OTHERWISE SWELL FROM THE SOUTHERN HEMISPHERE WILL 
SPREAD ACROSS MOST OF THE AREA WITHIN 48 HOURS.

$$
DGS