000
AXPZ20 KNHC 070903
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI MAR 07 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 ALONG 3N78W 2N100W 7N120W 5N140W. SCATTERED MODERATE 
ISOLATED STRONG WITHIN 150 NM N OF AXIS FROM 121W TO 124W.

...DISCUSSION...
UPPER LEVEL TROUGH OVER THE FAR NW PORTION OF THE AREA FROM
29N136W TO A LARGE CYCLONIC CIRCULATION W OF THE AREA NEAR
18N144W. MID/UPPER LEVEL RIDGE WITH AXIS FROM 26N131W TO 
ANTICYCLONIC CIRCULATION NEAR 11N117W. NARROW MID/UPPER LEVEL 
SHORTWAVE TROUGH IS DIGGING SEWD ACROSS SOUTHERN CALIFORNIA 
COAST NEAR SANTA BARBARA TO 29N130W. DOWNSTREAM SHORTWAVE RIDGE 
EXTENDS FROM NEVADA SWD ACROSS THE GULF OF CALIFORNIA. DIFFLUENT 
UPPER FLOW BETWEEN THE RIDGE AND THE TROUGH...WITH BROKEN TO 
OVERCAST MID AND HIGH CLOUDS WITHIN THE RIDGE AXIS.  A 
SHARPENING UPPER LEVEL TROUGH EXTENDS FROM A CYCLONIC 
CIRCULATION OVER ERN TEXAS TO W-CENTRAL MEXICO TO 18N105W. AN 
AREA OF STRONG UPPER LEVEL SUBSIDENCE IS NOTED OVER MEXICO SWD 
TO NICARAGUA. LARGE MID-UPPER ANTICYCLONIC CIRCULATION OVER WRN 
CARIBBEAN WITH RIDGE EXTENDING W ACROSS NICARAGUA TO 9N107W.

HIGH PRES 1029 MB NEAR 33N129W WITH ASSOCIATED RIDGE EXTENDING 
SE AND COVERING THE AREA N OF 12N W OF 100W. SURFACE TROUGH IS 
ANALYZED ALONG THE ITCZ FROM 9N134W 3N138W.

$$
DGS