000
AXPZ20 KNHC 120315
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC WED MAR 12 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 
0300 UTC.

...ITCZ...
ITCZ AXIS ALONG THE LINE...3N77W 2N110W 4N140W.
SCATTERED MODERATE WITHIN 60 NM OF THE POINT 6N123W.

...DISCUSSION...
UPPER LEVELS...
RIDGE IS OVER THE NORTHWEST PART OF THE AREA NORTHWEST OF A LINE 
32N122W 20N140W. THE AREA IS MOIST IN THE MIDDLE AND UPPER 
LEVELS BUT MOSTLY CLOUD FREE. 

ANOTHER RIDGE COVERS A LARGE PORTION OF THE SOUTHEAST PART OF 
THE AREA SOUTHEAST OF A LINE FROM EXTREME SE TEXAS TO THE ITCZ 
NEAR 135W. PART OF THIS AREA IS DIFLUENT ALOFT WITH MULTI LEVEL 
CLOUDS AND SOME EMBEDDED CONVECTION SOUTH OF 12N AND WEST OF 
110W. ALSO A LARGE PORTION OF THIS AREA IS DRY AND CLOUD FREE IN 
THE MIDDLE AND UPPER LEVELS...THIS AREA IS NORTH OF 5N EAST OF 
100W.

BETWEEN THE TWO RIDGES IS AN AREA OF CYCLONIC FLOW MADE UP OF 
TWO TROUGHS.  ONE TROUGH IS OVER THE NORTHEAST PART OF THE AREA 
INCLUDING MEXICO NORTH OF 25N WEST OF 100W. THIS AREA IS 
EXPECTED TO PERSIST THROUGH 48 HOURS AND EXPEND IN COVERAGE OVER 
MEXICO. THE OTHER TROUGH IS A MAINLY UPPER TROUGH WITH A WEAK 
CYCLONIC CIRCULATION CENTER NEAR 15N137W. THIS TROUGH IS 
EXPECTED TO DRIFT SLOWLY WEST AND WEAKEN SLIGHTLY.

SURFACE...
WEAK RIDGE IS NORTH OF 10N WEST OF 102W EXCEPT FOR A WEAK TROUGH 
ALONG THE MEXICAN COAST.  REMAINDER OF THE AREA IS ANALYZED AS A 
VERY BROAD TROUGH.

GULF OF TEHUANTEPEC WEAK GAP WIND OF UP TO 20 KNOTS WILL END 
MIDDAY WEDNESDAY.

GULF OF PAPAGAYO GAP WIND OF 20 KT WILL CONTINUE TROUGH 
WEDNESDAY.
 
$$
LL