| name | image | maximum rated tornado | Damage | date | Duration (h) | number Tornadoes caused | latitude (°) | longitude (°) | place | injured | number of deaths | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tornado outbreak of January 17–18, 1999 | 4.02e+007[USD] | 24 | 40.0200000000 | -78.5000000000 | Pennsylvania, United States | Map |