There were 20 convective periods for August 2009:
Start: 02/23Z End: 03/02Z Flow Regime: SE-1    radar/wind loop
Start: 03/17Z End: 04/00Z Flow Regime: SW-2    radar/wind loop
Start: 04/18Z End: 04/22Z Flow Regime: SW-2    radar/wind loop
Start: 05/15Z End: 05/21Z Flow Regime: SW-2    radar/wind loop
Start: 06/15Z End: 06/19Z Flow Regime: SW-2    radar/wind loop
Start: 13/02Z End: 13/06Z Flow Regime: Other   radar/wind loop
Start: 13/20Z End: 14/01Z Flow Regime: SE-1    radar/wind loop
Start: 14/20Z End: 14/23Z Flow Regime: SE-1    radar/wind loop
Start: 15/19Z End: 16/04Z Flow Regime: SE-2    radar/wind loop
Start: 17/16Z End: 17/21Z Flow Regime: SE-1    radar/wind loop
Start: 18/15Z End: 18/22Z Flow Regime: SE-2    radar/wind loop
Start: 20/04Z End: 20/06Z Flow Regime: SE-2    radar/wind loop
Start: 21/16Z End: 22/00Z Flow Regime: Other   radar/wind loop
Start: 22/19Z End: 22/23Z Flow Regime: SW-1    radar/wind loop
Start: 23/14Z End: 24/02Z Flow Regime: SW-1    radar/wind loop
Start: 24/22Z End: 25/06Z Flow Regime: SW-2    radar/wind loop
Start: 25/14Z End: 25/16Z Flow Regime: SE-2    radar/wind loop
Start: 26/16Z End: 26/19Z Flow Regime: SE-2    radar/wind loop
Start: 30/02Z End: 30/04Z Flow Regime: SW-1    radar/wind loop
Start: 31/20Z End: 01/05Z Flow Regime: SW-2    Continued into September   radar/wind loop
 
Start: 02/23Z End: 03/02Z Flow Regime: SE-1    radar/wind loop
 First peak wind >= 20 knots at 022325Z   Last at 030055Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 32 knots from 312 degrees for tower 1612 at 054 feet on 022330Z
 
Start: 03/17Z End: 04/00Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 031910Z   Last at 032315Z
 First peak wind >= 35 knots at 032215Z   Last at 032235Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 48 knots from 024 degrees for tower 0303 at 054 feet on 032235Z
 
Start: 04/18Z End: 04/22Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 042020Z   Last at 042115Z
 First peak wind >= 35 knots at 042040Z   Last at 042045Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 36 knots from 049 degrees for tower 1612 at 054 feet on 042040Z
 
Start: 05/15Z End: 05/21Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 051630Z   Last at 052055Z
 First peak wind >= 35 knots at 052020Z   Last at 052050Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 43 knots from 294 degrees for tower 3131 at 162 feet on 052040Z
 
Start: 06/15Z End: 06/19Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 061650Z   Last at 061840Z
 First peak wind >= 35 knots at 061805Z   Last at 061805Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 35 knots from 108 degrees for tower 0512 at 030 feet on 061805Z
 
Start: 13/02Z End: 13/06Z Flow Regime: Other   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 156 degrees for tower 1101 at 162 feet on 130345Z
 
Start: 13/20Z End: 14/01Z Flow Regime: SE-1    radar/wind loop
 First peak wind >= 20 knots at 132000Z   Last at 140020Z
 First peak wind >= 35 knots at 132200Z   Last at 132310Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 40 knots from 215 degrees for tower 0022 at 054 feet on 132210Z
 
Start: 14/20Z End: 14/23Z Flow Regime: SE-1    radar/wind loop
 First peak wind >= 20 knots at 142000Z   Last at 142210Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 31 knots from 307 degrees for tower 0513 at 030 feet on 142100Z
 
Start: 15/19Z End: 16/04Z Flow Regime: SE-2    radar/wind loop
 First peak wind >= 20 knots at 151900Z   Last at 160320Z
 First peak wind >= 35 knots at 160145Z   Last at 160200Z
 No peak winds >= 50 knots were reported
 Max peak wind reported was 44 knots from 171 degrees for tower 0300 at 054 feet on 160150Z
 
Start: 17/16Z End: 17/21Z Flow Regime: SE-1    radar/wind loop
 First peak wind >= 20 knots at 171715Z   Last at 172100Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 27 knots from 068 degrees for tower 0398 at 060 feet on 171715Z
 
Start: 18/15Z End: 18/22Z Flow Regime: SE-2    radar/wind loop
 First peak wind >= 20 knots at 181515Z   Last at 181920Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 31 knots from 119 degrees for tower 1007 at 054 feet on 181615Z
 
Start: 20/04Z End: 20/06Z Flow Regime: SE-2    radar/wind loop
 First peak wind >= 20 knots at 200400Z   Last at 200505Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 27 knots from 184 degrees for tower 0421 at 054 feet on 200500Z
 
Start: 21/16Z End: 22/00Z Flow Regime: Other   radar/wind loop
 First peak wind >= 20 knots at 211655Z   Last at 212315Z
 First peak wind >= 35 knots at 211700Z   Last at 211710Z
 First peak wind >= 50 knots at 211700Z   Last at 211700Z
 Max peak wind reported was 52 knots from 211 degrees for tower 0512 at 030 feet on 211700Z
 
Start: 22/19Z End: 22/23Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 221925Z   Last at 222110Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 34 knots from 266 degrees for tower 0061 at 204 feet on 222025Z
 
Start: 23/14Z End: 24/02Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 231540Z   Last at 232050Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 29 knots from 260 degrees for tower 3132 at 162 feet on 231940Z
 
Start: 24/22Z End: 25/06Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 242245Z   Last at 250515Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 26 knots from 147 degrees for tower 0394 at 060 feet on 250445Z
 
Start: 25/14Z End: 25/16Z Flow Regime: SE-2    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 13 knots from 101 degrees for tower 3132 at 295 feet on 251415Z
 
Start: 26/16Z End: 26/19Z Flow Regime: SE-2    radar/wind loop
 First peak wind >= 20 knots at 261750Z   Last at 261845Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 25 knots from 091 degrees for tower 0021 at 204 feet on 261750Z
 
Start: 30/02Z End: 30/04Z Flow Regime: SW-1    radar/wind loop
 First peak wind >= 20 knots at 300200Z   Last at 300300Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 25 knots from 210 degrees for tower 1612 at 054 feet on 300200Z
 
Start: 31/20Z End: 31/24Z Flow Regime: SW-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 17 knots from 106 degrees for tower 1612 at 054 feet on 312135Z