000
AXPZ20 KNHC 012211
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SAT DEC 1 2007

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN
FROM THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.
 
...ITCZ...

ITCZ AXIS ALONG 4N78W 7N93W 6N110W 10N120W 8N125W 9N140W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION WITHIN A 60 NM RADIUS OF 8N92W.

...DISCUSSION...

W OF 105W...
A LARGE MIDDLE/UPPER LEVEL TROUGH ALONG 120W EXTENDS SOUTHWARD TO 
24N. WATER VAPOR IMAGERY INDICATES CYCLONIC FLOW N OF 24N E OF 132W 
INTO MEXICO. AN ASSOCIATED SURFACE TROUGH EXTENDS FROM THE NORTHERN 
GULF OF CALIFORNIA TO 18N115W. SUBTROPICAL JET WITH 70-80 KT WINDS 
IS LOCATED FROM 16N120W TO 30N109W. A WESTERLY JET ENTERS THE AREA 
AT 10N140W AND THEN SPLITS NEAR 12N136W WITH THE STRONGER NORTHERN 
BRANCH EXTENDING THROUGH 15N135W TO NEAR 22N130W AND THE SOUTHERN 
BRANCH DIVING SE TO THE EQUATOR AT 128W. SW SFC WINDS WILL INCREASE 
OVER THE NW PART OF THE DISCUSSION AREA WITHIN 12 HOURS AND GALE 
CONDITIONS BEGIN IN ABOUT 24 HOURS. DAY TWO WINDS WILL REACH 40 
KNOTS AND SEAS BUILD TO 27 FEET.

E OF 105W...
WATER VAPOR IMAGERY INDICATES STRONG SUBSIDENCE E OF 105W WITH SE 
WINDS ALOFT IN THE 20 TO 30 KNOT RANGE.

$$
MUNDELL