000
AXPZ20 KNHC 040305
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC FRI MAR 04 2011

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0300 UTC.

...ITCZ...

THE INTERTROPICAL CONVERGENCE ZONE AXIS IS AXIS FROM 01N80W TO 
LOW PRES NEAR 07N90W TO 02N113W TO 06N121W TO 04N140W. NO 
SIGNIFICANT CONVECTION NOTED.

...DISCUSSION...

THE UPPER LEVEL PATTERN IS BECOMING MORE AMPLIFIED OVER THE NEXT 
48 HOURS AS A SHORT WAVE TROUGH DIGS THROUGH THE WESTERN U.S. 
WEAKENING AN UPPER RIDGE EXTENDING OVER THE PACIFIC COAST OF 
MEXICO. AN UPPER RIDGE BUILDS W OF 110W TO THE NORTH OF A CUTOFF 
LOW TO FORM A REX BLOCK THROUGH 36 HOURS. THE MAIN EFFECT OF ALL 
THIS AT THE SURFACE WILL BE A STRENGTHENING SURFACE HIGH NEAR 
30N125W...THAT WILL MAINTAIN FRESH TRADES OVER MUCH OF THE AREA 
S OF 20N THROUGH SAT...AND FRESH TO STRONG NW WINDS OFF THE 
COAST OF BAJA.  COMBINED SEA HEIGHTS OF AT LEAST 9 FT WILL 
PERSIST IN THE AREA OF TRADES DUE TO MIXED NW AND NE SWELL. A 
WEAK COLD FRONT WILL APPROACH THE DISCUSSION AREA FROM THE N 
CENTRAL PACIFIC BY LATE SAT...PRECEDED BY FRESH SW WINDS N OF 
28N W OF 138W.

GULF OF CALIFORNIA...NW WINDS AT 20 KT ARE OBSERVED OVER THE 
GULF S OF 28N AND EXPECTED TO INCREASE TO 20 TO 25 KT AND EXPAND 
TO COVER THE ENTIRE GULF OF CALIFORNIA BY EARLY SATURDAY.

GULF OF TEHUANTEPEC...N WINDS AT 15 TO 20 KT IN THE GULF OF 
TEHUANTEPEC WILL CONTINUE THROUGH LATE MORNING THEN QUICKLY 
DIMINISH TO LESS THAN 20 KT BY SUNSET.

GULF OF PAPAGAYO...NE TO E WINDS WILL CONTINUE TO PULSE AT 20 TO 
25 KT THROUGH FRI MORNING THEN DIMINISH FRI NIGHT.

.GULF OF PANAMA...NORTHERLY WINDS AT 15 TO 20 KT OVER THE AREA N 
OF 07N BETWEEN 78W AND 80W WILL SHIFT W TO THE AREA N OF 06N 
BETWEEN 78W AND 81W ON FRI AND SAT.

$$
CHRISTENSEN