Earthquakes in Castel Giorgio
Seismic activity in the surroundings
30 km radiusINGV catalogue epicentres of the last ~11 years, within the given radius from the town centre.
How seismic is this area?
Medium-low seismicity: strong quakes are rare, but not impossible.
Official Civil Protection classification (upd. 2025), used for building codes.
Hazard describes the long-term expected shaking: it is not a forecast. Technical value: ag = 0.144 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Castel Giorgio plus nearby towns.
The seismic history of Castel Giorgio
The earthquakes that were actually felt in Castel Giorgio over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2000IV1 April 2000
Moderate: felt by many indoors; glasses and dishes rattle.
Monte Amiata earthquake (M4.5), epicentre 27 km away
- 1997IV-V14 October 1997
Rather strong: felt by almost everyone; hanging objects swing.
Valnerina earthquake (M5.6), epicentre 78 km away
- 1997IV-V3 October 1997
Rather strong: felt by almost everyone; hanging objects swing.
Appennino umbro-marchigiano earthquake (M5.2), epicentre 79 km away
- 1997IV-V26 September 1997
Rather strong: felt by almost everyone; hanging objects swing.
Appennino umbro-marchigiano earthquake (M6.0), epicentre 79 km away
- 1994IV-V9 February 1994
Rather strong: felt by almost everyone; hanging objects swing.
Val di Paglia earthquake (M3.5), epicentre 12 km away
- 1993V5 June 1993
Rather strong: felt by almost everyone; hanging objects swing.
Valle del Topino earthquake (M4.7), epicentre 77 km away
- 1992V7 February 1992
Rather strong: felt by almost everyone; hanging objects swing.
Monti Volsini earthquake (M3.8), epicentre 9 km away
- 1979IV19 September 1979
Moderate: felt by many indoors; glasses and dishes rattle.
Valnerina earthquake (M5.8), epicentre 80 km away
- 1957VII-VIII6 December 1957
Ruinous: partial collapses in ordinary buildings, widespread heavy damage.
Orvietano earthquake (M5.0), epicentre 4 km away
- 1957D6 December 1957
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Orvietano earthquake (M5.0), epicentre 4 km away · observed at Case Perazza
- 1957D6 December 1957
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Orvietano earthquake (M5.0), epicentre 4 km away · observed at Pecorone
- 1957VI6 December 1957
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Orvietano earthquake (M5.0), epicentre 4 km away · observed at Montalfina
…and 10 more documented effects in this town's history.
Source: Italian Macroseismic Database DBMI15 (INGV, CC BY 4.0).
The great earthquakes in this area's history
Almost a thousand years of catalogues: the strongest documented events within ~50 km.
Source: Parametric Catalogue of Italian Earthquakes CPTI15 (INGV, CC BY 4.0).
The closest seismic structure
The town lies about 55 km from Mugello-Citta' di Castello-Leonessa, one of the seismic structures mapped by INGV geologists.
Faults are mapped to build better and understand the territory: knowing them says nothing about when an earthquake will occur, which remains unpredictable. Source: DISS 3.3 (INGV, CC BY 4.0).
Area over time
Earthquake map
60 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Castel Giorgio sits in one of the most seismically active areas of its province: quakes are a familiar presence here, almost always light.
Each quake is attributed to the town closest to its epicentre: the numbers describe the area, not the municipal territory alone.
Context
Province of Terni7 events · 30gUmbria region284 events · 30gFrequently asked questions
Were there earthquakes today in Castel Giorgio?
No, no quakes were recorded today in the Castel Giorgio area: the latest nearby dates back to 1 month ago.
Is Castel Giorgio a seismic area?
Castel Giorgio is classified in seismic zone 3 by the Civil Protection. Medium-low seismicity: strong quakes are rare, but not impossible.
What was the strongest earthquake near Castel Giorgio?
In the last ~11 years of INGV data, the strongest within 30 km of Castel Giorgio was magnitude 4.1, in 2016.
When was the last quake near Castel Giorgio?
The last quake recorded within 30 km of Castel Giorgio was 22 days ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)