000
AXPZ20 KNHC 030341
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC THU APR 03 2008

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 0315 UTC.

...ITCZ...
ITCZ AXIS IS CENTERED ALONG AXIS 09N83W 02N99W 06N128W 05N140W. 
WIDELY SCATTERED MODERATE IS WITHIN 180NMI S OF AXIS FROM 85W TO 
95W. WIDELY SCATTERED MODERATE IS WITHIN 180NMI ON EITHER SIDE 
OF THE AXIS FROM 115W TO 140W. 

...DISCUSSION...
A DEEP LAYER...BUT DISSIPATING...CYCLONE IS CENTERED NORTH 
OF THE AREA AT 35N125W.  THE ASSOCIATED COLD FRONTAL BOUNDARY 
EXTENDS ACROSS 30N122W TO 21N140W.  THE FRONT IS DISSIPATING AND 
NO SIGNIFICANT CONVECTION IS ASSOCIATED WITH IT SOUTH OF 30N.  A 
WEAK AND STATIONARY 1019 MB SURFACE HIGH IS AT 26N120W.  BECAUSE 
OF THE WEAKENED PRESSURE GRADIENT INDUCED BY THE LOW AND 
ASSOCIATED FRONT...ONLY ONE SMALL REGION IN THE TRADEWINDS 
CONTAINING SURFACE NE WINDS UP TO 20 KT WAS OBSERVED NEAR 
12N130W AS SEEN EARLIER TODAY BY QUIKSCAT.  THESE MODEST 
TRADEWINDS SHOULD BE MAINTAINED DURING THE NEXT TWO DAYS.  THE 
BRIEF BUT MODEST PAPAGAYO WIND EVENT HAS FADED AS A 0011Z 
QUIKSCAT PASS SHOWED E WINDS DROPPING JUST BELOW 20 KT.  
CYCLOGENESIS OVER THE CENTRAL PLAINS ON THURSDAY ALONG WITH A 
REBUILDING SURFACE HIGH WEST OF BAJA CALIFORNIA WILL BOOST NW 
WINDS UP TO 20 KT OR SLIGHTLY HIGHER ALONG BOTH SIDES OF 
SOUTHERN BAJA.  THIS WILL LIKELY PERSIST THROUGH FRIDAY IN THE 
SOUTHERN GULF OF CALIFORNIA AND POSSIBLY FOR A COUPLE ADDITIONAL 
DAYS ALONG THE WEST COAST OF BAJA.  A WEAK LOW OF 1008 MB ALONG 
THE ITCZ AT 4N91W AND A TROUGH ON THE ITCZ ALONG 132W ARE BOTH 
ASSOCIATED WITH SOME CONVECTIVE FEATURES...THOUGH IT LIKELY IS A 
BIT EARLY FOR ANY SERIOUS THREAT OF TROPICAL CYCLONE FORMATION 
AT THIS POINT IN THE YEAR.  THE EARLIER MENTIONED QUIKSCAT PASS 
NICELY DEPICTED THE CLOSED CIRCULATION OF THE WEAK LOW ON THE 
ITCZ AS WELL AS A MIRROR TROUGH...OR DOUBLE ITCZ...JUST SOUTH OF 
THE EQUATOR.

IN THE UPPER LEVELS...A LARGE ANTICYCLONE IS CENTERED NEAR 
14N106W.  THIS IN CONJUNCTION WITH THE EARLIER MENTIONED DEEP 
LAYER LOW IS CAUSING STRONG UPPER LEVEL SW WINDS...UP TO 110 KT 
OVER NORTHERN BAJA.  LESS UPPER LEVEL MOISTURE AND CLOUDINESS 
ARE BEING ADVECTED IN THIS FLOW OVER BAJA AND NW MAINLAND MEXICO 
TODAY.

$$
LANDSEA