000
AXPZ20 KNHC 171506
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE APR 17 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 AXIS EXTENDS FROM 04N105W TO 04N117W. SCATTERED MODERATE 
ISOLATED STRONG CONVECTION WITHIN 90 NM OF LINE FROM 02N100W TO 
07N109W TO 06N117W.

...DISCUSSION...

NEARLY STATIONARY 1025 MB HIGH PRES RIDGE IS CENTERED NEAR 
30N132W. COMBINATION OF ASCAT AND OSCAT SCATTEROMETER PASSES 
SHOWS 15-20 KT NLY WINDS N OF 26N E OF 125W. A BROAD AREA OF 
MODERATE TO FRESH NE TRADE WINDS IS LOCATED S OF THE RIDGE WITH 
THE HIGHEST WINDS EVIDENT FROM SCATTEROMETER DATA FROM 07N TO 
21N W OF 130W. SEA HEIGHTS CONTINUE TO GRADUALLY SUBSIDE ACROSS 
THE REGION.

EXPECT VERY LITTLE CHANGE TO THE CURRENT SYNOPTIC PATTERN FOR 
THE NEXT 24 HOURS. HIGH PRES RIDGE NEAR 30N132W WILL REMAIN 
NEARLY STATIONARY AND MODERATE TO FRESH TRADE WINDS WILL CONTINUE
S OF 20N W OF 130W...WITH SEAS SLOWLY SUBSIDING TO 8-9 FT BY WED.

A TIGHTER PRES GRADIENT IS EXPECTED TO DEVELOP ALONG THE COAST 
OF CALIFORNIA TONIGHT WITH NW WINDS INCREASING TO 25 KT N OF 30N.
NNW SWELL TO 9 FT AND 20 KT NLY WINDS CAN BE EXPECTED N OF 27N 
BETWEEN 118W AND 125W WED MORNING. MODEL GUIDANCE ALSO INDICATES 
THE POTENTIAL FOR 20-25 KT N WINDS IN THE GULF OF TEHUANTEPEC 
LATE TONIGHT THROUGH EARLY THU.

$$
MUNDELL