000
AXPZ20 KNHC 130912
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SUN JAN 13 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...10N85W 5N100W 7N125W 7N140W. NO 
SIGNIFICANT CONVECTION.

...DISCUSSION...
NEARLY STATIONARY MID/UPPER LEVEL CYCLONIC CIRCULATION IS 
CENTERED NEAR 12N129W. DIVERGENT FLOW ALOFT ON THE E SIDE OF THE 
UPPER LOW IS PRODUCING SOME SHOWER ACTIVITY FROM 7N-13N BETWEEN 
110W-127W. OTHERWISE LACK OF SIGNIFICANT DEEP LAYER MOISTURE IS 
PREVENTING ANY ORGANIZED CONVECTION. A MID/UPPER LEVEL RIDGE IS 
NW OF THE CYCLONIC CIRCULATION. ANOTHER UPPER LEVEL RIDGE IS E 
OF THE UPPER LOW S OF 25N BETWEEN 120W-98W. AN UPPER LEVEL TROUGH
EXTENDS FROM GUATEMALA TO EQUATOR AT 86W. MODERATE TO STRONG
SUBSIDENCE IS PRODUCING MOSTLY CLEAR SKIES N OF THE ITCZ E OF 
100W.

SURFACE HIGH PRES RIDGE COVERS THE AREA N OF 14N W OF 117W. AN
INVERTED TROUGH EXTENDS FROM PUERTO VALLARTA MEXICO NNW INTO THE
GULF OF CALIFORNIA.

DGS