000
AXPZ20 KNHC 120928
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE DEC 12 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...6N78W 8N112W 5N130W 5N40W. SCATERRED MODERATE 90 NM 
WIDE 78W TO 89W. SCATTERED MODERATE/ISOLATED STRONG 120 NM WIDE 
77W TO 140W.

...DISCUSSION...

A MID/UPPER LEVEL TROUGH FROM NW MEXICO TO  23N105W. IN ITS A 
SECOND TROUGH IS FROM FROM 32N124W SOUTHWESTWARD TO 26N140W.
 A  SUBTROPICAL JET STREAM BRANCH ENTERS THE REGION 
THROUGH 15N140W AND CONTINUES ALONG 17N125W...THEN NORTHEASTWARD 
THROUGH 20N120W TO ACROSS EXTREME SOUTHERN BAJA CALIFORNIA AND 
INLAND MEXICO AT 24N107.5W. A WEAK MID/UPPER LEVEL TROUGH 
EXTENDS FROM 14N113W SOUTHWEST THROUGH 6N120W TO 2N156W. ANOTHER 
WEAK/MID LEVEL TROUGH SOMEWHAT EMBEDDED IN THE BROAD WESTERLY 
FLOW EXTENDS FROM 24N123W SOUTHEASTWARD TO 15N122W. MID/UPPER 
LEVEL ANTICYCLONIC CIRCULATIONS ARE LOCATED NEAR 7N136W AND NEAR 
9N108W. MID/UPPER LEVEL RIDGING EXTENDS ALONG 7N ON EITHER WEST 
OF THE WEAK TROUGH TO YET ANOTHER MID/UPPER LEVEL ANTICYCLONIC 
CIRCULATION WEST OF THE AREA NEAR 7N143W. STRONG STRONG UPPER 
LEVEL SUBSIDENCE AND ASSOCIATED DRY IS NOTED ON SATELLITE WATER 
VAPOR IMAGERY WITHIN 150 NM EITHER SIDE OF LINE 18N140W TO 
20N125W TO 22N120W AND NORTHEASTWARD TO ACROSS SOUTHERN BAJA 
CALIFORNIA AND NORTHWEST MEXICO. 

GAP WINDS...
N-NE WINDS OF 20-25 KT ACROSS THE GULF OF TEHUANTEPEC...ARE 
EXPECTED TO REMAIN AT THIS RANGE THROUGH THE NEXT 48 HOURS.
 
NE WINDS OF UP TO 20 KT AT TIMES ACROSS THE GULF OF PAPAGAYO 
WEST TO 88W ARE EXPECTED TO CONTINUE THROUGH THE NEXT 36-48
HOURS.


$$
FETS