| 1997 Umbria and Marche earthquake | |
| Timestamp: | 1997-09-26 09:40:26 |
| Anss-Url: | usp000881f |
| Isc-Event: | 1043512 |
| Local-Time: | 11:40 |
| Magnitude: | 6.0 |
| Depth: | 10km (10miles) |
| Location: | 43.084°N 12.812°W |
| Countries Affected: | Italy (Umbria, Marche) |
| Intensity: | [1] |
| Casualties: | 11 dead 100 injured |
The 1997 Umbria and Marche earthquake occurred in the regions of Umbria and Marche, central Italy on the morning of 26 September. It was preceded by a foreshock almost as strong as the main quake. The foreshock occurred at 02:33 CEST (00:33 UTC), rated, and the second – the main shock – occurred at 11:40 CEST (09:40 UTC), rated . Their epicentre was in Annifo. The mainshock was assigned X (Extreme) and foreshock VIII (Severe) on the Mercalli intensity scale.[2]
There were several thousands of foreshocks and aftershocks from May 1997 to April 1998, more than thirty of which had a magnitude more than 3.5. Eleven people are known to have died following the shocks.
Only shocks (both foreshocks and aftershocks) with magnitude 5.0 or higher are listed.[3]
| Date (YYYY-MM-DD) | Time (UTC) | Depth | Magnitude | |||
|---|---|---|---|---|---|---|
| 1997-09-26 | 00:33:12 | 43.048° N | 12.879° E | 100NaN0 | 5.7 | |
| 1997-09-26 | 09:40:26 | 43.084° N | 12.812° E | 100NaN0 | 6.0 | |
| 1997-09-26 | 09:47:38 | 43.163° N | 12.752° E | 100NaN0 | 4.7 | |
| 1997-10-03 | 08:55:21 | 43.075° N | 12.794° E | 100NaN0 | 5.3 | |
| 1997-10-06 | 23:24:52 | 43.045° N | 12.835° E | 100NaN0 | 5.5 | |
| 1997-10-12 | 11:08:36 | 42.901° N | 12.897° E | 100NaN0 | 5.3 | |
| 1997-10-14 | 15:23:10 | 42.962° N | 12.892° E | 100NaN0 | 5.6 | |
| 1997-11-09 | 19:07:33 | 42.903° N | 12.948° E | 100NaN0 | 5.0 | |
| 1998-03-26 | 16:26:11 | 43.255° N | 12.969° E | 100NaN0 | 5.4 | |
| 1998-04-03 | 07:26:36 | 43.164° N | 12.701° E | 100NaN0 | 5.2 | |
| 1998-04-05 | 15:52:20 | 43.185° N | 12.719° E | 100NaN0 | 5.0 |