000
AXPZ20 KNHC 112116
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC TUE MAR 11 2008

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

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

...ITCZ...
ITCZ AXIS ALONG THE LINE...2N78W 1N105W 4N115W 5N130W 3N140W. 
SCATTERED MODERATE CONVECTION IS WITHIN THE AREA FROM 5.5N TO 
8.5N FROM 119W TO 128W.

...DISCUSSION...
UPPER LEVELS...
RIDGE IS OVER THE NORTHWEST PART OF THE AREA NORTHWEST OF A LINE 
32N124W 21N140W. 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 133W. 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 105W 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