000
AXPZ20 KNHC 210344
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC MON JAN 21 2008

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...

ITCZ AXIS IS CENTERED ALONG 6N77W 4N100W 7N120W 11N134W 9N140W. 
NO SIGNIFICANT CONVECTION.

...DISCUSSION...

W OF 100W...
THE SOUTHERN END OF A MIDDLE/UPPER LEVEL TROUGH OVER THE WESTERN 
UNITED STATES AND CONTINUING OFFSHORE COVERS THE AREA N OF 25N E 
OF 125W WITH THE AXIS ALONG 120W. A LARGE AREA OF WESTERLIES 
ALOFT COVERS THE PACIFIC S OF ABOUT 27N TO THE EQUATOR W OF 120W 
AND ALSO S OF 22N TO THE EQUATOR BETWEEN 110W AND 120W. THE 
STRONGEST WINDS ARE LOCATED FROM 12N TO 25N WITH SATELLITE CLOUD 
DRIFT WINDS INDICATING SPEEDS IN THE 80 TO 90 KNOT RANGE. 
INFRARED SATELLITE IMAGERY SHOWS DENSE LAYERED CLOUDS FROM ABOUT 
12N TO 20N W OF 125W.  

E OF 100W...
THE WESTERLIES ALOFT MENTIONED ABOVE CONTINUE INTO THE EASTERN 
PART OF THE DISCUSSION AREA ALTHOUGH THE WINDS ARE LOWER. WATER 
VAPOR IMAGERY INDICATES STRONG SUBSIDENCE E OF 100W CONTINUING 
ACROSS CENTRAL AMERICA INTO THE CARIBBEAN. AT THE SURFACE A 
STRONG GALE WARNING WITH N TO NE WINDS TO 45 KNOTS IS IN EFFECT 
OVER THE GULF OF TEHUANTEPEC. A QUIKSCAT PASS AT 0000Z SHOWS 
SEVERAL WIND BARBS IN THE 35 TO 45 KNOT RANGE. WINDS ARE 
EXPECTED TO DROP BELOW WARNING CRITERIA IN 24 HOURS.

$$
CAB