| Fujita Tornado Scale |
Floodplain Management Resource Guide |
Sangamon County Hail Event Data |
| March 12, 2006, Tornado Aerial Overlay. From NOAA - Lincoln, IL. |
Illinois State Model Flood Ordinance |
Know Your Winter Storm and Extreme Cold Terms |
| Springfield Tornados: March 12, 2006 |
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Snow Terms |
| The Basics About Tornados |
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| Tornados by Hour and Month |
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| Tornados in Sangamon County 1950-2006 |
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