000
AXPZ20 KNHC 240236
TWDEP 

TROPICAL WEATHER DISCUSSION                                     
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
0405 UTC TUE MAR 10 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0145 UTC. 
 
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
 
THE MONSOON TROUGH EXTENDS FROM 07N90W TO LOW PRES NEAR 05N95W 
1011 MB TO 04N108W. THE ITCZ CONTINUES FROM 04N108W TO 06N120W 
TO 04N135W TO 04N140W. SCATTERED MODERATE CONVECTION IS 
OBSERVED FROM 07N TO 10N BETWEEN 130W AND 140W.
 
...DISCUSSION... 
  
E TO 120W...A VERY WEAK PRESSURE PATTERN CONTINUES ACROSS THE 
MOST OF THE REGION. BUOY OBSERVATIONS AND DATA FROM RECENT 
SCATTEROMETER SATELLITE PASSES INDICATE GENERALLY LIGHT WINDS 
OVER MOST OF THE AREA. THE EXCEPTION IS OFF THE COAST OF BAJA 
CALIFORNIA NORTE WHERE FRESH NW TO N WINDS ARE NOTED ON THE EAST 
SIDE OF STRONG HIGH PRESSURE CENTERED WEST OF THE AREA NEAR 
30N130W. SEAS IN THIS AREA ARE LIKELY REACHING 8 FT DUE IN PART 
TO NW SWELL GENERATED BY PREVIOUS STRONG WINDS OFF THE COAST OF 
SOUTHERN AND CENTRAL CALIFORNIA. RECENT ALTIMETER PASSES 
ELSEWHERE INDICATE GENERALLY 4 TO 5 FT WAVE HEIGHTS. STRONG GAP 
WINDS WILL BRIEFLY PUSH INTO THE GULF OF TEHUANTEPEC 
TONIGHT...ASSOCIATED WITH A COLD FRONT MOVING ACROSS THE SW GULF 
OF MEXICO THIS AFTERNOON. IN ADDITION...LONG PERIOD SW SWELL IS 
EXPECTED TO MOVE ACROSS THE EQUATOR BETWEEN THE GALAPAGOS AND 
120W EARLY TUESDAY...BRINGING 8 FT OR GREATER TO THE MEXICAN AND 
CENTRAL AMERICAN COASTLINES THROUGH LATE WEEK.

LOOKING AHEAD FOR THE GULF OF TEHUANTEPEC...A STRONGER 
TEHUANTEPEC EVENT IS EXPECTED ON FRI NIGHT WITH MINIMAL GALE 
CONDITIONS AS A STRONG SPRINGTIME COLD FRONT MOVES ACROSS THE 
GULF OF MEXICO.

W OF 120W...STRONG SUBTROPICAL RIDGING IS SUPPORTING FRESH 
TRADES NEAR THE ITCZ W OF 135W. A NEGATIVELY TILTED UPPER TROUGH 
OVER THE DEEP TROPICS FROM 17N140W TO 10N132W IS INTERACTING 
WITH THE TRADE WIND CONVERGENCE IN THE LOWER LEVELS OF THE 
ATMOSPHERE TO SUPPORT AREAS OF SCATTERED SHOWERS AND 
THUNDERSTORMS FROM 07N TO 10N BETWEEN 130W AND 140W...DISPLACED 
ABOUT 150 NM N OF THE ITCZ. LONG PERIOD NW SWELL OVER MUCH OF 
THE AREA N OF 15N W OF 130W WILL DECAY BELOW 8 FT THROUGH 
TONIGHT. 

$$ 
CHRISTENSEN