There were 4 convective periods for September 2012:
Start: 06/20Z End: 06/23Z Flow Regime: SW-1    radar/wind loop
Start: 07/21Z End: 08/02Z Flow Regime: SW-1    radar/wind loop
Start: 18/17Z End: 18/20Z Flow Regime: SW-1    radar/wind loop
Start: 19/19Z End: 19/21Z Flow Regime: SW-1    radar/wind loop
 
Start: 06/20Z End: 06/23Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 062000Z   Last at 062200Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 33 knots from 255 degrees for tower 0421 at 054 feet on 062105Z
 
Start: 07/21Z End: 08/02Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 072115Z   Last at 080200Z
 First peak wind >= 35 knots at 072130Z   Last at 080030Z
 First peak wind >= 50 knots at 072130Z   Last at 072130Z
 Max peak wind reported was 59 knots from 290 degrees for tower 0421 at 054 feet on 072130Z
 
Start: 18/17Z End: 18/20Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 181700Z   Last at 181930Z
 First peak wind >= 35 knots at 181715Z   Last at 181850Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 46 knots from 251 degrees for tower 0300 at 054 feet on 181835Z
 
Start: 19/19Z End: 19/21Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 191920Z   Last at 192025Z
 First peak wind >= 35 knots at 191925Z   Last at 192010Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 47 knots from 278 degrees for tower 3131 at 295 feet on 191950Z