There were 18 convective periods for July 2011:
Start: 01/17Z End: 01/19Z Flow Regime: SW-1    radar/wind loop
Start: 04/14Z End: 04/21Z Flow Regime: SE-2    radar/wind loop
Start: 07/14Z End: 08/02Z Flow Regime: SE-1    radar/wind loop
Start: 08/19Z End: 09/00Z Flow Regime: SW-1    radar/wind loop
Start: 09/18Z End: 10/00Z Flow Regime: SW-1    radar/wind loop
Start: 10/17Z End: 10/22Z Flow Regime: SW-2    radar/wind loop
Start: 11/20Z End: 12/01Z Flow Regime: SW-2    radar/wind loop
Start: 12/21Z End: 13/02Z Flow Regime: SW-2    radar/wind loop
Start: 13/19Z End: 14/00Z Flow Regime: SW-2    radar/wind loop
Start: 14/20Z End: 15/06Z Flow Regime: SW-1    radar/wind loop
Start: 15/21Z End: 16/00Z Flow Regime: SW-1    radar/wind loop
Start: 17/23Z End: 18/10Z Flow Regime: NE      radar/wind loop
Start: 22/16Z End: 23/00Z Flow Regime: SW-2    radar/wind loop
Start: 23/15Z End: 23/18Z Flow Regime: SE-1    radar/wind loop
Start: 24/14Z End: 24/19Z Flow Regime: SE-1    radar/wind loop
Start: 26/17Z End: 27/01Z Flow Regime: SW-2    radar/wind loop
Start: 28/00Z End: 28/02Z Flow Regime: SW-2    radar/wind loop
Start: 31/17Z End: 31/19Z Flow Regime: Other   radar/wind loop
 
Start: 01/17Z End: 01/19Z Flow Regime: SW-1    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 16 knots from 353 degrees for tower 9404 at 054 feet on 011810Z
 
Start: 04/14Z End: 04/21Z Flow Regime: SE-2    radar/wind loop
 First peak wind >= 20 knots at 041530Z   Last at 042015Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 20 knots from 282 degrees for tower 0061 at 204 feet on 041530Z
 
Start: 07/14Z End: 08/02Z Flow Regime: SE-1    radar/wind loop
 First peak wind >= 20 knots at 071630Z   Last at 080050Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 27 knots from 180 degrees for tower 0511 at 030 feet on 071630Z
 
Start: 08/19Z End: 09/00Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 081900Z   Last at 090000Z
 First peak wind >= 35 knots at 082025Z   Last at 090000Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 40 knots from 203 degrees for tower 1007 at 054 feet on 082025Z
 
Start: 09/18Z End: 10/00Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 091915Z   Last at 092325Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 29 knots from 192 degrees for tower 0714 at 054 feet on 091930Z
 
Start: 10/17Z End: 10/22Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 102005Z   Last at 102100Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 28 knots from 223 degrees for tower 0421 at 054 feet on 102005Z
 
Start: 11/20Z End: 12/01Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 112050Z   Last at 112345Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 32 knots from 269 degrees for tower 0019 at 054 feet on 112135Z
 
Start: 12/21Z End: 13/02Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 122145Z   Last at 130105Z
 First peak wind >= 35 knots at 130025Z   Last at 130035Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 35 knots from 219 degrees for tower 0421 at 054 feet on 130025Z
 
Start: 13/19Z End: 14/00Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 132000Z   Last at 132340Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 31 knots from 164 degrees for tower 0300 at 054 feet on 132250Z
 
Start: 14/20Z End: 15/06Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 142000Z   Last at 150545Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 28 knots from 169 degrees for tower 0421 at 054 feet on 142135Z
 
Start: 15/21Z End: 16/00Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 152150Z   Last at 152315Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 30 knots from 282 degrees for tower 9404 at 054 feet on 152200Z
 
Start: 17/23Z End: 18/10Z Flow Regime: NE      radar/wind loop
 First peak wind >= 20 knots at 172300Z   Last at 180755Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 26 knots from 069 degrees for tower 0019 at 054 feet on 180720Z
 
Start: 22/16Z End: 23/00Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 221925Z   Last at 230000Z
 First peak wind >= 35 knots at 222325Z   Last at 222335Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 40 knots from 245 degrees for tower 0021 at 204 feet on 222325Z
 
Start: 23/15Z End: 23/18Z Flow Regime: SE-1    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 19 knots from 334 degrees for tower 1012 at 054 feet on 231745Z
 
Start: 24/14Z End: 24/19Z Flow Regime: SE-1    radar/wind loop
 First peak wind >= 20 knots at 241745Z   Last at 241745Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 21 knots from 021 degrees for tower 0512 at 030 feet on 241745Z
 
Start: 26/17Z End: 27/01Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 261845Z   Last at 262355Z
 First peak wind >= 35 knots at 261855Z   Last at 261935Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 47 knots from 193 degrees for tower 3131 at 295 feet on 261930Z
 
Start: 28/00Z End: 28/02Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 280005Z   Last at 280135Z
 First peak wind >= 35 knots at 280035Z   Last at 280105Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 40 knots from 226 degrees for tower 0421 at 054 feet on 280055Z
 
Start: 31/17Z End: 31/19Z Flow Regime: Other   radar/wind loop
 First peak wind >= 20 knots at 311735Z   Last at 311735Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 21 knots from 031 degrees for tower 0415 at 054 feet on 311735Z