000
AXPZ20 KNHC 090923
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED JAN 09 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...4N77W 8N85W 5N95W 7N110W 
6N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION...
UPPER LEVEL TROUGH EXTENDS FROM SOUTHERN CALIFORNIA TO 15N130W 
TO 12N140W. SOME HIGH LEVEL MOISTURE E OF THE TROUGH AXIS IS 
SPREADING INTO THE NORTHERN BAJA PENINSULA. A HIGH AMPLITUDE 
RIDGE IS BUILDING NW OF THE TROUGH. MODERATE TO STRONG 
SUBSIDENCE IS N OF THE ITCZ TO 23N W OF 125W. MID TO UPPER LEVEL
RIDGE WITH AXIS FROM SOUTH AMERICA ACROSS NICARAGUA AND HONDURAS
TO THE YUCATAN PENINSULA. IN THE DEEP TROPICS A NARROW UPPER 
LEVEL TROUGH EXTENDS FROM 10N103W TO THE EQUATOR AT 100W. MOSTLY 
DRY AIR AT THE MIDDLE AND UPPER LEVELS OF THE ATMOSPHERE IS 
KEEPING CONVECTIVE ACTIVITY LIMITED ACROSS THE ITCZ.

SURFACE HIGH PRES 1027 MB NEAR 28N136W WITH ANTICYCLONIC FLOW 
OVER AREA N OF 10N W OF 110W. BROKEN TO OVERCAST STRATOCUMULUS
CLOUDS WITHIN THE RIDGE N OF 15N W OF 115W.

$$
DGS