We just had a huge thunderstorm pass over Melbourne. For anyone watching from home it meant a temperature drop of 7 degrees in about 30 seconds! Here are the logs from my weather station:
mysql> SELECT time, temp, humidity FROM sensor_outside
WHERE time > '2009-11-26 14:39'
AND time < '2009-11-26 14:53';
+———————+——+———-+
| time | temp | humidity |
+———————+——+———-+
| [...]