000
AXPZ20 KNHC 130320
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC THU MAR 13 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...2N79W 2N100W 8N115W 7N140W. SCATTERED 
MODERATE WITH ISOLATED STRONG CONVECTION IS WITHIN 60 NM OF THE 
POINT 9N115W. SCATTERED MODERATE CONVECTION IS WITHIN 75 NM OF 
THE POINT 10N121.5W. SCATTERED MODERATE CONVECTION IS WITHIN 120 
NM OF THE POINT 8N136W.

...DISCUSSION...
UPPER LEVELS...
UPPER RIDGE IS NORTH OF 20N AND WEST OF 120W. THE PORTION 
OF THIS AREA NORTH OF 27N IS MOIST IN THE MIDDLE AND UPPER 
LEVELS BUT IS CLOUD FREE. FROM 20N TO 27N THE AREA IS DRY AND 
CLOUD FREE IN THE MIDDLE AND UPPER LEVELS.

ANOTHER RIDGE EAST OF 127W AND NORTH OF A LINE 6N127W TO THE 
EQUATOR AT 110W AND NORTH OF THE EQUATOR EAST OF 110W. THE RIDGE 
EXTENDS NORTH TO A LINE 16N127W TO EXTREME SOUTH TEXAS. THE 
PORTION OF THE RIDGE NORTHWEST OF A LINE 2N120W 10N105W TO 
20N95W IS DIFLUENT IN THE UPPER LEVELS AND MOIST IN THE MIDDLE 
AND UPPER LEVELS WITH AREAS OF MULTI LEVEL CLOUDS AND SOME 
EMBEDDED CONVECTION.

TWO TROUGH ARE IN THE AREA. ONE IS NORTH AND EAST OF THE ABOVE 
MENTIONED RIDGES. THE TROUGH IS CAUSING SOME CLOUDINESS OVER 
MEXICO MAINLY NORTH OF 25N WITH DRYING TO THE WEST OF 110W. 

THE OTHER TROUGH IS SOUTH AND WEST OF THE ABOVE MENTIONED 
RIDGES. A CYCLONIC CIRCULATION CENTER IS EMBEDDED IN THE FEATURE 
AND IS CENTERED NEAR 15N137W. THE TROUGH IS DRIFTING WEST AND 
SLOWLY WEAKENING.

SURFACE...
MODERATE RIDGE IS NORTH OF 10N WEST OF 105W. ELSEWHERE BROAD 
TROUGH IS ANALYZED.

GAP WINDS IN THE GULF OF TEHUANTEPEC HAVE FALLEN BELOW 20 KNOTS. 

GAP WINDS IN THE GULF OF PAPAGAYO REGION HAVE ALSO FALLEN BELOW 
20 KNOTS.

$$
LL