000
AXPZ20 KNHC 150322
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC THU MAR 15 2007

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0300 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG THE LINE...5N77W 5N95W 5N140W. 
SCATTERED MODERATE CONVECTION IS WITHIN 60 NM OF THE POINTS 
10N110W AND 8.5N115.3W.

...DISCUSSION...

MIDDLE AND UPPER LEVEL CYCLONIC CIRCULATION COVERS AN AREA NORTH 
OF THE ITCZ WEST OF 120W. THE AREA IS DRY AND CLOUD FREE IN THE 
MIDDLE AND UPPER LEVELS.  SCATTERED TO BROKEN STRATOCUMULUS 
CLOUDS ARE NORTH OF 20N IN THE LOWER LEVELS.  EAST OF 120W 
ANTICYCLONIC FLOW IS NOTED IN THE MIDDLE AND UPPER LEVELS.  THE 
FLOW IS DIVERGENT ALOFT NORTH OF THE ITCZ FROM 105W TO 120W AND 
MULTI LAYER CLOUDS ARE OBSERVED NORTH OF THE ITCZ TO NEARLY 20N. 
THESE CLOUDS AND MOISTURE ARE EMANATING FROM CONVECTION WITHIN 
THE ITCZ FROM 105W TO 120W.

EXCEPT FOR ISOLATED CONVECTION NEAR THE ITCZ THE AREA EAST OF 
100W IS DRY AND CLOUD FREE IN THE LOWER MIDDLE AND UPPER 
LAYERS. 

SURFACE...
WEAK RIDGE IS NORTH OF THE ITCZ WEST OF 115W.  ELSEWHERE BROAD 
TROUGH IS ANALYZED.

GAP WINDS...E WINDS HAVE DIMINISHED IN AND DOWNSTREAM OF THE 
GULF OF PAPAGAYO.  STRONG WINDS ARE EXPECTED IN THE GULF OF 
TEHUANTEPEC REGION BEGINNING FRIDAY NIGHT.

$$
LL