Recent satellite imagery is indicating a decrease in the convection in the western band and a CHT, convective hot tower, developing to the NE of the CoC.
Almost appeared to be a shift in power... drawing energy from the western convective band and building the CHT near the center.
Current CoC near 13.0N/ 81.0W, using the wv loop. Or about 45 miles ENE of San Andreas Island.
Current CHT near 13.2N/ 80.4W

ICAO : SKSP
Station Name : San Andres Island
Country : Colombia
Location : 12.57N 81.72W
Time : 9 / 22:00Z
Temperature : 77.0
Dew Point : 75.2
RH : 94
Heat Index : 77.9
Wind : N (360) at 9 mph
Visibility : 3.7 miles
Pressure : 1008.8
Sky Condition : Scattered clouds at 1200ft, Broken clouds at 7000ft
Weather : Drizzle
Wind Chill : N/A
Remarks :
METAR : SKSP 092200Z 36008KT 6000 DZ SCT012 BKN070 25/24 A2979 RMK WSRWY06

System seems to be elongated from SSW to NNE.
Latest 98L surface plot from Coolwx.com

Buoy 42057 is 232nm NNW of the CoC and is reporting continuous increases in wind speed over the last hour. With 5 degree drop in air temperature... raining.
http://www.ndbc.noaa.gov/station_page.php?station=42057
Station 42057
NDBC
Location: 16.834N 81.501W
Conditions as of:
Sat, 9 Oct 2010 21:50:00 UTC
Winds: NNE (30Â°) at 25.3 kt gusting to 29.1 kt
Significant Wave Height: 5.6 ft
Dominant Wave Period: 7 sec
Atmospheric Pressure: 29.84 in and falling
Air Temperature: 78.1 F
Dew Point: 74.7 F
Water Temperature: 84.2 F