000
AXPZ20 KNHC 110904
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI JAN 11 2008

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

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.
 
...ITCZ...
INTERTROPICAL CONVERGENCE ZONE..7N78W 5N85W 5N85W 7N110W 7N125W 
5N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION...
MID/UPPER LEVEL CYCLONIC CIRCULATION IS CENTERED NEAR 14N132W.
AN UPPER LEVEL RIDGE IS NW OF THE CYCLONIC CIRCULATION FROM
NORTHERN BAJA CALIFORNIA TO 27N130W TO 23N140W. VERY DRY AIR 
MASS AT MID/UPPER LEVEL N OF ITCZ W OF 129W. SOME UPPER LEVEL
MOISTURE IS BEING ADVECTED NEWD E OF THE CYCLONE. A SHORTWAVE
TROUGH IS MOVING ACROSS NORTHERN MEXICO EXTENDING FROM SE TEXAS
THE THE SOUTHERN TIP OF THE BAJA PENINSULA. WITH THE DRY AIR
MASS IN PLACE NO SIGNIFICANT WEATHER ASSOCIATED WITH THE TROUGH.

BROAD MID/UPPER LEVEL RIDGE EXTENDS FROM SOUTH AMERICA ACROSS 
NICARAGUA AND HONDURAS TO YUCATAN PENINSULA MAINTAINS STRONG TO 
MODERATE SUBSIDENCE ALOFT. MODERATE TO STRONG SUBSIDENCE 
CONTINUES TO SUPPRESS CONVECTIVE ACTIVITY ALONG THE ITCZ.

SURFACE HIGH PRES CENTER 1026 MB CENTERED NEAR 31N131W HAS RIDGE 
SE TO 15N105W. ANTICYCLONIC FLOW N OF 10N W OF 105W MAINTAINS 
BRISK NE TRADES W OF 120W.

DGS