There were 6 convective periods for September 1997:
Start: 31/23Z End: 01/22Z Flow Regime: SE-1    Continued from August   radar/wind loop
Start: 02/19Z End: 03/03Z Flow Regime: SW-2    radar/wind loop
Start: 03/16Z End: 04/02Z Flow Regime: SW-2    radar/wind loop
Start: 05/03Z End: 05/08Z Flow Regime: NE      radar/wind loop
Start: 19/14Z End: 19/23Z Flow Regime: NE      radar/wind loop
Start: 22/21Z End: 23/12Z Flow Regime: NE      radar/wind loop
 
Start: 31/23Z End: 01/22Z Flow Regime: SE-1    Continued from August   radar/wind loop
 First peak wind >= 20 knots at 010000Z   Last at 012150Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 33 knots from 097 degrees for tower 0311 at 054 feet on 011110Z
 
Start: 02/19Z End: 03/03Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 022050Z   Last at 030250Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 26 knots from 175 degrees for tower 0020 at 145 feet on 022340Z
 
Start: 03/16Z End: 04/02Z Flow Regime: SW-2    radar/wind loop
 First peak wind >= 20 knots at 031850Z   Last at 032005Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 34 knots from 337 degrees for tower 0403 at 054 feet on 031955Z
 
Start: 05/03Z End: 05/08Z Flow Regime: NE      radar/wind loop
 First peak wind >= 20 knots at 050300Z   Last at 050800Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 32 knots from 068 degrees for tower 0394 at 060 feet on 050505Z
 
Start: 19/14Z End: 19/23Z Flow Regime: NE      radar/wind loop
 First peak wind >= 20 knots at 191400Z   Last at 191950Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 30 knots from 176 degrees for tower 0393 at 060 feet on 191400Z
 
Start: 22/21Z End: 23/12Z Flow Regime: NE      radar/wind loop
 First peak wind >= 20 knots at 222130Z   Last at 230835Z
 No peak winds >= 35 knots were reported
 No peak winds >= 50 knots were reported
 Max peak wind reported was 31 knots from 201 degrees for tower 0506 at 012 feet on 230750Z