000
AXPZ20 KNHC 140905
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC THU DEC 14 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 
0900 UTC.

...ITCZ...

THE ITCZ AXIS IS CENTERED ALONG 7N78W 6N100W 9N124W 7N140W. NO 
SIGNIFICANT CONVECTION. 

...DISCUSSION...

AN ELONGATED MID/UPPER LEVEL TROUGH EXTENDS FROM THE TEXAS BIG 
BEND ACROSS THE SOUTHERN BAJA PENINSULA TO 22N120W TO 18N140W. A 
70-90 KT SUBTROPICAL JETSTREAM JUST SOUTH OF THE TROUGH AND IS 
MARKED BY A 180-240 NM BAND OF CIRRUS CLOUDS. MODERATE TO STRONG 
SUBSIDENCE IS WITHIN 300-360 NM N OF OF THE TROUGH AXIS. A 
MID/UPPER LEVEL RIDGE IS NW OF THE TROUGH WITH AXIS FROM 32N125W 
26N140W. AN UPPER HIGH CENTERED NEAR 10N114W WITH AN E TO W 
RIDGE EXTENDING ALONG 10N W OF 100W. ANOTHER WEAK UPPER HIGH IS 
NEAR ALONG THE W COAST OF NICARAGUA. UPPER ELY FLOW COVERS THE 
AREA FROM THE EQUATOR TO 10N BETWEEN COLOMBIA AND 110W. 

A COUPLE OF SFC TROUGHS ARE ANALYZED ALONG THE ITCZ ONE FROM 
2N-10N ALONG 90W AND ANOTHER FROM 4N-12N ALONG 126W. NO 
SIGNIFICANT CONVECTION ASSOCIATED WITH THE TROUGHS. A 1031 MB 
SURFACE HIGH NEAR 31N132W WITH RIDGE FROM THE HIGH CENTER TO 
15N116W. BROKEN TO OVERCAST STRATUS AND STRATOCUMULUS CLOUDS 
WITHIN THE RIDGE N OF 15N W OF 120W. THE STRONG HIGH IS 
PRODUCING TRADE WINDS OF 20-25 KTS FROM 5N-25N W OF 125W.
 
$$
DGS