000
AXPZ20 KNHC 291538
TWDEP 

TROPICAL WEATHER DISCUSSION                                
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE MAR 29 2016

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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1500 UTC.               
  
...SPECIAL FEATURES...                                         
NEAR GALE TO GALE FORCE WINDS WERE CONFIRMED ON AN EARLIER
MORNING ASCAT PASS AROUND 29/0518 UTC WITHIN 60 NM SE OF A COLD
FRONT ANALYZED FROM 31.5N114W TO 30.5N115W IN THE NORTHERN GULF
OF CALIFORNIA. LATEST SURFACE PRESSURE GRADIENT ANALYSIS BETWEEN
A 994 MB INTERMOUNTAIN WEST LOW CENTERED ACROSS EASTERN UTAH AND
COLORADO AND THE NORTHEASTERN PACIFIC OCEAN SUBTROPICAL RIDGE IS
EXPECTED TO GRADUALLY WEAKEN THROUGH TONIGHT AS THE LOW EJECTS
INTO THE CENTRAL U.S. PLAINS. SEAS ARE CURRENTLY PEAKING AROUND
8 FT AND EXPECTED TO GRADUALLY SUBSIDE THROUGH TONIGHT AND EARLY
WED. SEE LATEST NWS HIGH SEAS FORECAST UNDER AWIPS/WMO HEADERS
MIAHSFEP2/FZPN03 KNHC FOR MORE DETAILS.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...            
NORTHERN ITCZ AXIS EXTENDS FROM 03N100W TO 07N111W TO 01N126W TO
07N140W. SOUTHERN ITCZ AXIS EXTENDS FROM 03.4S102W TO 01S110W TO
03.4N119W. SCATTERED MODERATE CONVECTION IS FROM 01N TO 04N
BETWEEN 103W AND 107W...AND FROM 06N TO 12N BETWEEN 113W AND
121W. ISOLATED MODERATE CONVECTION IS S OF 03S BETWEEN 102W AND
109W...AND S OF 02S BETWEEN 115W AND 118W.
 
...DISCUSSION...                                               
A RIDGE AXIS EXTENDS FROM 31N133W SE TO 12N100W. THE PRESSURE
GRADIENT BETWEEN THIS RIDGE AND LOWER PRESSURE IN THE VICINITY
OF THE ITCZ IS MAINTAINING MODERATE TO LOCALLY FRESH TRADES
ACROSS THE WESTERN WATERS MAINLY FROM 07N-20N W OF 120W. SEAS OF
6 TO 8 FT ARE NOTED PER ALTIMETER DATA WITHIN THE AREA OF
TRADES. MODERATE TO LOCALLY FRESH N-NE WINDS ARE ALSO NOTED PER
RECENT SCATTEROMETER DATA ACROSS THE WATERS N OF 20N W OF 120W.
A NEW HIGH CENTER WILL MATERIALIZE NEAR 37N133W DURING THE NEXT
12 TO 24 HOURS AND MOVE S-SE ANCHORING ALONG 30N THROUGH FRI. AS
THIS HIGH FORMS...A COLD FRONT IS FORECAST TO REACH 30N140W BY
WED AFTERNOON/EVENING. SOUTHERLY WINDS OF 20-25 KT ARE EXPECTED
BRIEFLY AHEAD OF THE FRONT ACROSS THE FAR NW WATERS WED. A NEW
SWELL EVENT WILL FOLLOW IN WAKE OF THE FRONT BUILDING SEAS TO 11
FT W OF A LINE FROM 30N134W TO 22N140W BY THU MORNING. 

SEAS ASSOCIATED WITH AN AREA OF STRONG TO NEAR GALE FORCE
NORTHERLY WINDS OFF THE COAST OF CALIFORNIA WILL CONTINUE TO
PROPAGATE ACROSS THE NE WATERS...ESPECIALLY N OF 28N BETWEEN
116W AND 125W TONIGHT. EXPECT SEAS TO BUILD TO 9 FT WITHIN THIS
AREA AND THEN GRADUALLY SUBSIDE BY LATE WED MORNING.

CROSS EQUATORIAL SW SWELL WILL CONTINUE TO PROPAGATE ACROSS THE
S-CENTRAL WATERS DURING THE NEXT 24 HOURS WITH BUILDING SEAS OF
8-9 FT COVERING THE WATERS S OF A LINE FROM 03.4S90W TO 06N104W
TO 03.4S117W WED MORNING. THESE SEAS WILL BEGIN TO SUBSIDE WED
AFTERNOON THROUGH WED EVENING.

A SURFACE TROUGH IS FORECAST TO DEVELOP WITHIN THE ITCZ NEAR
116W THROUGH THIS EVENING...EXTENDING FROM 09N119W TO 05N121W BY
WED MORNING. THE TROUGH WILL DRIFT WESTWARD THROUGH THU WITH AN
AREA OF 8 FT SEAS OCCURRING GENERALLY W OF THE TROUGH AXIS IN
MIXED SW AND NW SWELL.
   
$$
HUFFMAN