000
AXPZ20 KNHC 110906
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE MAR 11 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 
0900 UTC.

...ITCZ...
ITCZ AXIS IS ALONG 8N81W 1N100W 7N120W 5N140W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION FROM 2N TO 9N BETWEEN 115W 
AND 124W.

...DISCUSSION...
UPPER TROUGH EXTENDS FROM 32N121W 25N127W TO 11N140W. SOME 
BROKEN HIGH CLOUDS EXTEND 300 NM E OF THE AXIS IN THE SW FLOW 
FROM 11N-20N. TRANSVERSE BANDING ON THE CIRRUS CLOUDS SUGGEST 
UPPER LEVEL TURBULENCE MAY BE IN THIS AREA. UPPER LEVEL RIDGE IS 
BUILDING NW OF THE TROUGH AXIS. DRY AND CLOUD FREE AIR IS 
OBSERVED WEST OF 135W FROM 5N-25N. MID/UPPER LEVEL RIDGE E OF THE
TROUGH EXTENDS FROM SOUTHERN CALIFORNIA TO 17N112W. DEEP LAYER 
TROUGH IS OVER MEXICO EXTENDS FROM A CYCLONIC CIRCULATION OVER 
CENTRAL NEW MEXICO TO W CENTRAL MEXICO NEAR 23N104W. A LARGE 
UPPER LEVEL ANTICYCLONIC CIRCULATION OVER THE WESTERN CARIBBEAN 
WITH RIDGE AXIS EXTENDING W ACROSS NICARAGUA AND HONDURAS TO 
4N108W. ANOTHER ANTICYCLONIC CIRCULATION IN THE DEEP TROPICS IS 
CENTERED NEAR 7N116W. UPPER LEVEL DIFLUENT FLOW SW OF THE 
ANTICYCLONIC CIRCULATION IS ENHANCING CONVECTIVE ACTIVITY ALONG 
THE ITCZ.

WEAK SURFACE RIDGE IS N OF 14N W OF 122W. A SURFACE TROUGH IS
ANALYZED THE ITCZ FROM 13N117W TO 4N1129W. SCATTERED MODERATE 
ISOLATED STRONG CONVECTION FROM 2N-9N BETWEEN 115W-124W.  
 

$$
DGS