000
AXPZ20 KNHC 050918
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED MAR 05 2008

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

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0845 UTC.
 
...ITCZ...
THE ITCZ AXIS IS ALONG THE LINE...03N77W 08N110W 07N140W. 
SCATTERED MODERATE CONVECTION IS WITHIN 75 NM OF THE POINT 
7N131W.

...DISCUSSION...
UPPER LEVEL...
TWO TROUGH DOMINATE THE NORTHERN AND NORTHWESTERN PART OF THE 
AREA. ONE TROUGH IS NORTH OF 18N E OF 120W AND IS MOVING EAST 
OVER MEXICO...HOWEVER THE TROUGH WILL BE REINFORCED AND REMAIN 
IN THIS AREA THROUGH AT LEAST 48 HOURS. THE AREA IS DRY AND 
CLOUD FREE IN THE MIDDLE AND UPPER LEVELS AND...UNUSUALLY...ALSO 
IN THE LOWER LEVELS. 

THE OTHER TROUGH IS WEST OF 130W NORTH OF THE ITCZ TO 25N.  AN 
ASSOCIATED CYCLONIC CIRCULATION IS JUST WEST OF THE AREA NEAR 
18N153W AND IS MOVING SLOWLY SOUTHWEST. THE SYSTEM IS MOVING 
SLOWLY WEST. A LARGE AREA OF MIDDLE AND UPPER LEVEL MOISTURE AND 
MULTI LEVEL CLOUDS IS WITHIN THE SOUTHERLY FLOW TO THE EAST OF 
THE SYSTEM SOUTH OF 22N W OF 125W.

REMAINDER OF THE AREA IS WEAK ANTICYCLONIC FLOW. THE AREA NORTH 
OF THE ITCZ EAST OF A LINE 20N95W TO THE ITCZ NEAR 110W.

SURFACE...
WEAK RIDGE IS NORTH OF 12N WEST OF 112W. ELSEWHERE BROAD TROUGH 
IS ANALYZED.

GULF OF CALIFORNIA IN 24 HOUR NORTHERLY WINDS WILL BEGIN IN THE 
NORTH GULF AND SPREAD SOUTH. WINDS WILL BE IN THE 20 TO 25 KT 
RANGE WITH OCCASIONAL WINDS TO 30 KT.

GULF OF TEHUANTEPEC WINDS ARE RAPIDLY DECREASING TO 20 TO 25 KT 
AND WILL BE LESS THAN 20 KT EARLY WEDNESDAY.
 
$$
LL