000
AXPZ20 KNHC 090345
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SUN MAR 09 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 4N78W 2N92W 7N110W 5N120W 6N140W. SCATTERED MODERATE 
ISOLATED STRONG CONVECTION IS LOCATED WITHIN 60 NM EITHER SIDE 
OF A 12N107W 8N113W 6N117W LINE. 

...DISCUSSION...

W OF 100W...
A MIDDLE/UPPER LEVEL TROUGH IS ENTERING THE WESTERN BOUNDARY OF 
THE DISCUSSION AREA ALONG 140W N OF 17N...MOVING ENE 10-15 
KNOTS. A LARGE MIDDLE/UPPER LEVEL RIDGE HAS ITS AXIS LOCATED 
ALONG 133W N OF ABOUT 10N WITH ANTICYCLONIC FLOW LOCATED ABOUT 
10 DEGREES E OF THE AXIS AND 5 TO 6 DEGREES W OF THE AXIS. 
MOVING DOWNSTREAM A LARGE MIDDLE/UPPER LEVEL TROUGH HAS ITS AXIS 
LOCATED ALONG 112W N OF ABOUT 15N WITH CYCLONIC FLOW LOCATED 
BETWEEN 102W AND 122W. A NORTHWESTERLY JET HAS ITS AXIS 
EXTENDING THROUGH 32N120W TO NEAR 23N115W. SATELLITE CLOUD DRIFT 
WINDS SHOW THAT WINDS ALONG THE JET ARE IN THE 55 TO 65 KNOT 
RANGE. EMBEDDED WITHIN THE TROUGH IS A MIDDLE/UPPER LEVEL 
CYCLONIC CIRCULATION THAT IS CENTERED NEAR 22N110W...MOVING SE 
10 TO 15 KNOTS. AT THE SURFACE MODERATE TRADE WINDS ARE LOCATED 
W OF ABOUT 122W. 

E OF 100W...
WINDS ALOFT IN THE EASTERN PART OF THE DISCUSSION AREA ARE 
PRIMARILY SE TO S WITH WATER VAPOR IMAGERY INDICATING STRONG 
SUBSIDENCE. AT THE SURFACE OVER THE GULF OF TEHUANTEPEC A GALE 
WARNING IS IN EFFECT WITH N TO NE WINDS OF 30 TO 40 KNOTS AND 
SEAS TO 14 FT. IN 18 HOURS WINDS WILL DROP TO BELOW GALE FORCE. 

$$
CAB