000
AXPZ20 KNHC 300338
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SUN DEC 30 2007

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...

INTERTROPICAL CONVERGENCE ZONE AXIS ALONG 9N83W 4N100W 7N120W 
6N140W. SCATTERED MODERATE CONVECTION IS LOCATED WITHIN A 100 NM 
RADIUS OF 11N113W.

...DISCUSSION...

W OF 100W...
A MIDDLE/UPPER LEVEL ANTICYCLONIC CIRCULATION IS CENTERED NEAR 
32N134W...NEARLY STATIONARY. ANTICYCLONIC WINDS COVER THE AREA N 
OF 27N W OF 125W. FURTHER EAST A STRONG MIDDLE/UPPER LEVEL 
TROUGH HAS ITS AXIS ALONG 105W N OF 23N AND IS DIGGING 
SOUTHWARD. CYCLONIC FLOW IS LOCATED UP TO TEN DEGREES EITHER 
SIDE OF THE TROUGH AXIS. AN ELONGATED MIDDLE/UPPER LEVEL 
CYCLONIC CIRCULATION IS POSITIONED NEAR 20N132W...MOVING WEST 
ABOUT 10 KNOTS. A TROUGH AXIS EXTENDS S FROM THE CIRCULATION 
CENTER TO 15N136W. A JET EXTENDS THROUGH 14N140W TO 22N128W AND 
ACROSS 22N110W INTO CENTRAL MEXICO NEAR 24N104W. THE JET HAS 
WEAKENED OVER THE PAST SEVERAL HOURS WITH SATELLITE CLOUD DRIFT 
WINDS INDICATING THE HIGHEST SPEEDS...60 TO 70 KNOTS...BETWEEN 
120W AND 130W. A LARGE AREA OF SOUTHWESTERLY WINDS ALOFT ARE 
LOCATED S OF THE JET TO NEAR 8N BETWEEN 100W AND 135W. AT THE 
SURFACE STRONG NE TRADE WINDS OF 25 TO 30 KNOTS ARE LOCATED FROM 
10N TO 23N W OF 125W. CONDITIONS WILL GRADUALLY DECREASE OVER 
THE NEXT 24 TO 48 HOURS. A 1031 MB SURFACE HIGH IS LOCATED NEAR 
34N142W.

E OF 100W...
A WEAK MIDDLE/UPPER LEVEL CYCLONIC CIRCULATION IS LOCATED IN THE 
VICINITY OF 9N93W...STATIONARY. MODERATE SOUTHERLY WINDS ALOFT 
ARE LOCATED E OF ABOUT 88W INTO CENTRAL AMERICA AND COLOMBIA.

$$
CAB