There were 20 convective periods for August 2011:
Start: 01/17Z End: 01/22Z Flow Regime: SW-2    radar/wind loop
Start: 02/22Z End: 03/02Z Flow Regime: Other   radar/wind loop
Start: 07/19Z End: 08/02Z Flow Regime: SW-1    radar/wind loop
Start: 08/14Z End: 09/01Z Flow Regime: SW-1    radar/wind loop
Start: 09/14Z End: 09/17Z Flow Regime: SW-1    radar/wind loop
Start: 10/13Z End: 10/15Z Flow Regime: NW      radar/wind loop
Start: 12/18Z End: 12/20Z Flow Regime: Other   radar/wind loop
Start: 13/20Z End: 14/00Z Flow Regime: SE-2    radar/wind loop
Start: 14/18Z End: 15/01Z Flow Regime: SW-1    radar/wind loop
Start: 15/18Z End: 15/20Z Flow Regime: Other   radar/wind loop
Start: 17/16Z End: 18/02Z Flow Regime: SW-2    radar/wind loop
Start: 18/15Z End: 18/18Z Flow Regime: SE-1    radar/wind loop
Start: 19/17Z End: 19/20Z Flow Regime: SW-2    radar/wind loop
Start: 20/14Z End: 20/23Z Flow Regime: SE-2    radar/wind loop
Start: 21/15Z End: 21/18Z Flow Regime: SE-2    radar/wind loop
Start: 23/16Z End: 23/19Z Flow Regime: SW-2    radar/wind loop
Start: 28/17Z End: 28/22Z Flow Regime: SW-1    radar/wind loop
Start: 29/17Z End: 29/21Z Flow Regime: Other   radar/wind loop
Start: 30/18Z End: 30/22Z Flow Regime: SW-2    radar/wind loop
Start: 31/23Z End: 31/24Z Flow Regime: SE-2 Con    radar/wind loop
 
Start: 01/17Z End: 01/22Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 011755Z   Last at 012035Z
 First peak wind >= 35 knots at 011945Z   Last at 012005Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 43 knots from 295 degrees for tower 0512 at 030 feet on 011945Z
 
Start: 02/22Z End: 03/02Z Flow Regime: Other   radar/wind loop
 First peak wind >= 20 knots at 030005Z   Last at 030115Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 31 knots from 298 degrees for tower 0300 at 054 feet on 030005Z
 
Start: 07/19Z End: 08/02Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 071910Z   Last at 080200Z
 First peak wind >= 35 knots at 071955Z   Last at 072035Z
 First peak wind >= 50 knots at 072035Z   Last at 072035Z
 Max peak wind reported was 55 knots from 258 degrees for tower 0394 at 060 feet on 072035Z
 
Start: 08/14Z End: 09/01Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 081515Z   Last at 090100Z
 First peak wind >= 35 knots at 081805Z   Last at 081830Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 40 knots from 249 degrees for tower 0714 at 054 feet on 081810Z
 
Start: 09/14Z End: 09/17Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 091415Z   Last at 091620Z
 First peak wind >= 35 knots at 091430Z   Last at 091515Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 37 knots from 276 degrees for tower 0022 at 054 feet on 091430Z
 
Start: 10/13Z End: 10/15Z Flow Regime: NW      radar/wind loop
 First peak wind >= 20 knots at 101300Z   Last at 101500Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 27 knots from 300 degrees for tower 0300 at 054 feet on 101400Z
 
Start: 12/18Z End: 12/20Z Flow Regime: Other   radar/wind loop
 First peak wind >= 20 knots at 121905Z   Last at 122000Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 26 knots from 014 degrees for tower 1612 at 054 feet on 121910Z
 
Start: 13/20Z End: 14/00Z Flow Regime: SE-2    radar/wind loop
 First peak wind >= 20 knots at 132140Z   Last at 132315Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 25 knots from 047 degrees for tower 1612 at 054 feet on 132255Z
 
Start: 14/18Z End: 15/01Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 141950Z   Last at 150100Z
 First peak wind >= 35 knots at 142110Z   Last at 142310Z
 First peak wind >= 50 knots at 142115Z   Last at 142115Z
 Max peak wind reported was 55 knots from 317 degrees for tower 0394 at 060 feet on 142115Z
 
Start: 15/18Z End: 15/20Z Flow Regime: Other   radar/wind loop
 First peak wind >= 20 knots at 151810Z   Last at 151955Z
 First peak wind >= 35 knots at 151915Z   Last at 151930Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 43 knots from 278 degrees for tower 0061 at 204 feet on 151925Z
 
Start: 17/16Z End: 18/02Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 171905Z   Last at 180140Z
 First peak wind >= 35 knots at 180100Z   Last at 180100Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 37 knots from 125 degrees for tower 1102 at 204 feet on 180100Z
 
Start: 18/15Z End: 18/18Z Flow Regime: SE-1    radar/wind loop
 First peak wind >= 20 knots at 181535Z   Last at 181710Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 27 knots from 230 degrees for tower 0311 at 054 feet on 181545Z
 
Start: 19/17Z End: 19/20Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 191750Z   Last at 191750Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 20 knots from 133 degrees for tower 3132 at 295 feet on 191750Z
 
Start: 20/14Z End: 20/23Z Flow Regime: SE-2    radar/wind loop
 First peak wind >= 20 knots at 202110Z   Last at 202245Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 29 knots from 220 degrees for tower 1007 at 054 feet on 202140Z
 
Start: 21/15Z End: 21/18Z Flow Regime: SE-2    radar/wind loop
 First peak wind >= 20 knots at 211630Z   Last at 211800Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 26 knots from 183 degrees for tower 0421 at 054 feet on 211705Z
 
Start: 23/16Z End: 23/19Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 231705Z   Last at 231900Z
 First peak wind >= 35 knots at 231710Z   Last at 231730Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 38 knots from 052 degrees for tower 0019 at 054 feet on 231710Z
 
Start: 28/17Z End: 28/22Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 281700Z   Last at 282155Z
 First peak wind >= 35 knots at 281750Z   Last at 281815Z
 First peak wind >= 50 knots at 281750Z   Last at 281810Z
 Max peak wind reported was 55 knots from 203 degrees for tower 0311 at 054 feet on 281810Z
 
Start: 29/17Z End: 29/21Z Flow Regime: Other   radar/wind loop
 First peak wind >= 20 knots at 291805Z   Last at 292050Z
 First peak wind >= 35 knots at 291935Z   Last at 291935Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 38 knots from 214 degrees for tower 0021 at 204 feet on 291935Z
 
Start: 30/18Z End: 30/22Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 301815Z   Last at 302130Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 32 knots from 216 degrees for tower 0403 at 054 feet on 302010Z
 
Start: 31/23Z End: 31/24Z Flow Regime: SE-2 Con    radar/wind loop
 No peak winds >= 20 knots were reported
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 11 knots from 100 degrees for tower 0300 at 054 feet on 312300Z