000
AXPZ20 KNHC 151530
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SUN APR 15 2012

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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
ITCZ FROM 5N103W TO 1N135W. SCATTERED MODERATE TO STRONG 
CONVECTION WITHIN 180 NM N OF AXIS FROM 116W-133W.

...DISCUSSION...
AN UPPER LEVEL RIDGE OVER THE FAR WESTERN PORTION OF THE 
DISCUSSION AREA WITH AXIS FROM 32N134W TO 12N140W. AN UPPER LEVEL
TROUGH E OF THE RIDGE EXTENDS FROM NW MEXICO ACROSS THE BAJA 
CALIFORNIA PENINSULA TO 15N116W. A 100-115 KT JETSTREAM AROUND 
THE TROUGH OVER NORTHERN MEXICO FROM 29N112W TO THE BIG BEND OF 
TEXAS. A LARGE AREA OF STRONG SUBSIDENCE WITH DRY STABLE AIR AT 
THE MIDDLE AND UPPER LEVELS IS ACROSS THE AREA FROM 15N TO 30N. 
AN UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 7N90W.

NW-N SURFACE WINDS TO 20 KT ARE ALONG THE W COAST OF BAJA 
CALIFORNIA WITH NW SWELLS UP TO 13 FT. THE WINDS DECREASE TO 
BELOW 20 KT MON HOWEVER THE LARGE NW SWELLS WILL CONTINUE 
THROUGH THE NEXT 24 HOURS.

HIGH PRES RIDGE EXTENDS FROM 1029 MB HIGH PRES CENTERED NEAR 
31N133W TO 20N115W. AROUND THE SOUTHERN PERIPHERY OF THE RIDGE 
TRADES TO 20 KT ARE FROM 6N-24N W OF 125W. OTHERWISE SEAS ARE 
9-11 FT IN MIXED NE...NW AND SW SWELLS ARE S OF 20N W OF 115W.

$$
DGS