000
AXPZ20 KNHC 281544
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC SUN FEB 28 2010

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

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...ITCZ...

THE INTERTROPICAL CONVERGENCE ZONE WAS ANALYZED ALONG AN AXIS 
FROM 05N77W TO 05N90W TO 05N110W TO 06N120W TO 03N140W. 
SCATTERED MODERATE ISOLATED STRONG CONVECTION IS LOCATED FROM 
02N TO 05N BETWEEN 85W AND 90W...WITHIN 60 NM EITHER SIDE OF A 
LINE FROM 05N108W TO 06N117W...AND WITHIN A 90 NM RADIUS OF 
06N125W.

...DISCUSSION...

W OF 100W...
A MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS LOCATED OVER SE 
ARIZONA AND IS MOVING SE 10 TO 15 KT. A TROUGH COVERS THE AREA N 
OF 26N E OF 120W ACROSS BAJA CALIFORNIA AND INTO NW MEXICO WITH 
THE AXIS LOCATED ALONG 113W. AN UPSTREAM MIDDLE/UPPER LEVEL 
TROUGH WILL ENTER THE NW PART OF THE DISCUSSION AREA IN THE NEXT 
DAY OR SO. BETWEEN THE TWO TROUGHS A WELL-DEFINED RIDGE IS 
LOCATED N OF ABOUT 26N BETWEEN 125W AND 140W WITH THE AXIS ALONG 
130W. MOVING TO THE SOUTH...A MIDDLE/UPPER LEVEL TROUGH HAS ITS 
AXIS EXTENDING FROM NEAR 22N130W TO 10N140W. A WELL-DEFINED JET 
EXTENDS FROM NEAR THE BASE OF THE TROUGH AT 07N140W TO 20N128W 
AND ACROSS THE SOUTHERN BAJA CALIFORNIA PENINSULA. SATELLITE 
DERIVED WINDS ALONG THE JET MEASURE 60 TO 70 KT. A LARGE BAND OF 
SOUTHWESTERLY WINDS ALOFT IS LOCATED UP TO 15 DEGREES S OF THE 
JET. AT THE SURFACE A 1021 MB HIGH IS LOCATED NEAR 27N134W AND 
WILL MOVE TO 28N120W IN 24 HOURS. A LARGE AREA OF HIGH 
SEAS...WITH NW SWELL...UP TO 20 FEET IS LOCATED NW OF A LINE 
FROM THE NORTHERN BAJA CALIFORNIA PENINSULA TO 10N140W. SEAS 
WILL GRADUALLY SUBSIDE OVER THIS AREA AND THEN BUILD OVER THE NW 
PART OF THE DISCUSSION AREA DUE TO A COLD FRONT. 

E OF 100W...
WINDS ALOFT ARE GENERALLY WESTERLY OVER THE AREA E OF 100W. A 
GALE OVER THE GULF OF TEHUANTEPEC WILL DROP BELOW GALE FORCE IN 
ABOUT 6 HOURS.

FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

$$
CAB