Earthquakes in Chianciano Terme
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 = 0.143 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Chianciano Terme plus nearby towns.
The seismic history of Chianciano Terme
The earthquakes that were actually felt in Chianciano Terme over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2001IV26 November 2001
Moderate: felt by many indoors; glasses and dishes rattle.
Casentino earthquake (M4.6), epicentre 67 km away
- 1998III-IV5 April 1998
Moderate: felt by many indoors; glasses and dishes rattle.
Appennino umbro-marchigiano earthquake (M4.8), epicentre 78 km away
- 1997IV-V26 September 1997
Rather strong: felt by almost everyone; hanging objects swing.
Appennino umbro-marchigiano earthquake (M5.7), epicentre 87 km away
- 1997IV-V26 September 1997
Rather strong: felt by almost everyone; hanging objects swing.
Appennino umbro-marchigiano earthquake (M6.0), epicentre 84 km away
- 1984IV29 April 1984
Moderate: felt by many indoors; glasses and dishes rattle.
Umbria settentrionale earthquake (M5.6), epicentre 62 km away
- 1940V16 October 1940
Rather strong: felt by almost everyone; hanging objects swing.
Val di Paglia earthquake (M5.3), epicentre 17 km away
- 1926IV8 January 1926
Moderate: felt by many indoors; glasses and dishes rattle.
Monte Amiata earthquake (M4.9), epicentre 26 km away
- 1909V25 August 1909
Rather strong: felt by almost everyone; hanging objects swing.
Crete Senesi earthquake (M5.3), epicentre 37 km away
- 1902IV-V17 December 1902
Rather strong: felt by almost everyone; hanging objects swing.
Monte Amiata earthquake (M4.8), epicentre 28 km away
- 1861V-VI9 May 1861
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Val di Chiana earthquake (M5.0), epicentre 15 km away
- 1861V9 May 1861
Rather strong: felt by almost everyone; hanging objects swing.
Val di Chiana earthquake (M5.0), epicentre 15 km away · observed at Argiano
- 1781D11 January 1781
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Crete Senesi earthquake (M4.9), epicentre 29 km away
…and 14 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 47 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?
Chianciano Terme is among the quietest towns of its province: very few epicentres are recorded here.
Each quake is attributed to the town closest to its epicentre: the numbers describe the area, not the municipal territory alone.
Context
Province of Siena3 events · 30gTuscany region53 events · 30gFrequently asked questions
Were there earthquakes today in Chianciano Terme?
No, no quakes were recorded today in the Chianciano Terme area: the latest nearby dates back to 4 days ago.
Is Chianciano Terme a seismic area?
Chianciano Terme 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 Chianciano Terme?
In the last ~11 years of INGV data, the strongest within 30 km of Chianciano Terme was magnitude 3.4, in 2019.
When was the last quake near Chianciano Terme?
The last quake recorded within 30 km of Chianciano Terme was 2 days ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)