000
AXPZ20 KNHC 012201
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                      
2205 UTC TUE MAR 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
2145 UTC.               
  
...SPECIAL FEATURE...

GULF OF TEHUANTEPEC GALE WARNING...STRONG TO NEAR GALE-FORCE N
WINDS WILL DEVELOP OVER THE GULF OF TEHUANTEPEC EARLY WED
MORNING. WINDS WILL INCREASE TO MINIMAL GALE FORCE LATE WED
NIGHT WITH SEAS BUILDING TO 10 FT. THE N WINDS WILL QUICKLY
DIMINISH TO 20 TO 30 KT EARLY THU MORNING WITH SEAS SUBSIDING TO
LESS THAN 8 FT ON THU NIGHT. ANOTHER STRONG SURGE IS EXPECTED TO
DEVELOP SAT THROUGH SUN.    

...INTERTROPICAL CONVERGENCE ZONE...

A SURFACE TROUGH EXTENDS FROM 08N83W TO 05N88W. THE ITCZ BEGINS
NEAR 05N88W AND CONTINUES ALONG 03N100W TO 03N110W TO BEYOND
02N140W. SCATTERED MODERATE CONVECTION IS FROM 02N TO 08N
BETWEEN 102W AND 110W...AND FROM 0N TO 06N W OF 117W.

...DISCUSSION...
 
HIGH PRESSURE OF 1023 MB CENTERED NEAR 30N128W EXTENDS A RIDGE
SE TO NEAR 20N111W AND SW TO BEYOND 13N140W. THE PRESSURE
GRADIENT BETWEEN THE AREA OF HIGH PRESSURE AND LOWER PRESSURE IN
THE VICINITY OF THE ITCZ MAINTAINS MODERATE TO LOCALLY FRESH
TRADES OVER THE WESTERN WATERS N OF THE ITCZ. TRADES WILL
MAINTAIN IN THE MODERATE TO FRESH RANGE THROUGH THE NEXT COUPLE
OF DAYS. SUBSIDING NW PRIMARY SWELL MIXING WITH SOUTHERLY
SECONDARY SWELL COVERS MUCH OF THE SOUTHERN PART OF THE FORECAST
AREA WITH SEAS TO 9 FT MAINLY FOUND S OF 09N BETWEEN 98W AND
113W. THIS SWELL WILL CONTINUE TO SUBSIDE AND BY EARLY WED
MORNING SEAS WILL REACH 8 FT. A COLD FRONT WILL MOVE INTO THE
FAR NW WATERS EARLY WED MORNING WITH STRONG TO NEAR GALE WINDS
AHEAD OF IT. BY WED AFTERNOON WINDS W OF THE FRONT WILL BE LESS
THAN 20 KT...HOWEVER NW SWELL WILL BUILD SEAS TO NEAR 20 FT BY
WED NIGHT. FRESH TO STRONG SW WINDS WILL CONTINUE E OF THE FRONT
THROUGH WED AFTERNOON.

GAP WINDS... 

WINDS WILL PULSE OVER THE GULF OF PAPAGAYO OVER THE NEXT COUPLE
OF DAYS. WINDS WILL PEAK NEAR 25 KT DURING THE LATE NIGHT AND
EARLY MORNING HOURS WITH THE ASSISTANCE OF NOCTURNAL DRAINAGE
FLOW. WINDS WILL DIMINISH TO 20 KT OR LESS DURING THE AFTERNOON
AND EARLY EVENING HOURS. 

$$
NR