000
AXPZ20 KNHC 080937
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED MAR 08 2006

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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0945 UTC.

...ITCZ...
ITCZ AXIS ALONG 5N78W 3N110W EQ125W 2N140W. WIDELY SCATTERED 
MODERATE CONVECTION WITHIN 60 NM OF THE AXIS BETWEEN 92W AND 97W.

...DISCUSSION...

W OF 110W...
BROAD LONGWAVE TROUGH DOMINATES THE WESTERN CONUS AND A PORTION 
OF THE TROUGH EXTENDS SW ACROSS THE DISCUSSION AREA ALONG 
30N122W THROUGH A CYCLONIC CIRCULATION NEAR 23N135W THROUGH 
26N140W. THIS TROUGH IS DEGENERATING INTO A SHEAR AXIS WITH 
TIME. AN AREA OF MODERATE TO STRONG SUBSIDENCE/DRY AIR ALOFT 
COVERS THE AREA FROM 20N TO 30N BETWEEN 126W AND 140W. A BROAD 
AREA OF MODERATE TO STRONG SWLY FLOW ALOFT EXISTS AND WAS 
ADVECTING DEEP TROPICAL MOISTURE FROM THE CENTRAL PACIFIC/HAWAII
NEWD ACROSS THE DISCUSSION AREA TOWARD BAJA CALIFORNIA...MEXICO
AND THE SOUTHERN PLAINS OF THE CONUS. AT THE SURFACE...HIGH PRES 
NEAR 35N142N RIDGES SE TO 15N105W. 

E OF 110W...
A LARGE UPPER ANTICYCLONE IS NEAR 6N96W AND DOMINATES THE 
PACIFIC E OF 110W NORTHWARD INTO THE GULF OF MEXICO AND CENTRAL 
AMERICA. SWLY FLOW ALONG THE WRN PERIPHERY OF THE ANTICYCLONE IS 
ADVECTING SOME UPPER LEVEL MOISTURE TOWARD NRN MEXICO. CONFLUENT 
FLOW IN THE MID AND UPPER LEVELS IS RESULTING IN A VAST AREA OF 
DRY AIR ALOFT OVER CENTRAL AMERICA...SOUTHERN GULF OF MEXICO AND 
CARIBBEAN SEA.  

GAP WINDS...
THE LOW LEVEL FLOW HAS BECOME SLY IN THE GULF OF MEXICO 
SIGNALING THE END OF GAP WINDS IN THE GULF OF TEHUANTEPEC. MOST 
RECENT QUIKSCAT PASSES STILL INDICATE 20 TO 25 KT WINDS IN THE 
GULFS OF PAPAGAYO AND PANAMA. NUMERICAL GUIDANCE SUGGESTS THESE 
WINDS WILL CONTINUE FOR ABOUT 36 HOURS THEN DECREASE.

$$
COBB