Earthquakes in Tolfa
Seismic activity in the surroundings
30 km radiusINGV catalogue epicentres of the last ~12 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 = 0.075 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Tolfa plus nearby towns.
The seismic history of Tolfa
The earthquakes that were actually felt in Tolfa over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2017F18 January 2017
Moderate: felt by many indoors; glasses and dishes rattle.
Aquilano earthquake (M5.7), epicentre 117 km away
- 1997NF14 October 1997
Imperceptible: only instruments record it.
Valnerina earthquake (M5.6), epicentre 114 km away
- 1997III26 September 1997
Light: felt by few people, like a passing truck.
Appennino umbro-marchigiano earthquake (M6.0), epicentre 121 km away
- 1997NF26 September 1997
Imperceptible: only instruments record it.
Appennino umbro-marchigiano earthquake (M5.7), epicentre 124 km away
- 1987NF11 April 1987
Imperceptible: only instruments record it.
Colli Albani earthquake (M4.3), epicentre 81 km away
- 1984NF11 May 1984
Imperceptible: only instruments record it.
Monti della Meta earthquake (M5.5), epicentre 164 km away
- 1984NF7 May 1984
Imperceptible: only instruments record it.
Monti della Meta earthquake (M5.9), epicentre 181 km away
- 1971IV6 February 1971
Moderate: felt by many indoors; glasses and dishes rattle.
Tuscania earthquake (M4.8), epicentre 35 km away
- 1969VII2 July 1969
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Monti della Tolfa earthquake (M4.8), epicentre 4 km away · observed at Rota
- 1969VI2 July 1969
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Monti della Tolfa earthquake (M4.8), epicentre 4 km away
- 1915III13 January 1915
Light: felt by few people, like a passing truck.
Marsica earthquake (M7.1), epicentre 130 km away
- 1895III-IV1 November 1895
Moderate: felt by many indoors; glasses and dishes rattle.
Campagna romana earthquake (M4.8), epicentre 56 km away
…and 3 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 76 km from Castelli Romani, 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
25 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Tolfa 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 Roma0 events · 30gLazio region80 events · 30gFrequently asked questions
Were there earthquakes today in Tolfa?
No, no quakes were recorded today in the Tolfa area: the latest nearby dates back to 3 months ago.
Is Tolfa a seismic area?
Tolfa 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 Tolfa?
In the last ~12 years of INGV data, the strongest within 30 km of Tolfa was magnitude 2.3, in 2017.
When was the last quake near Tolfa?
The last quake recorded within 30 km of Tolfa was 3 months ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)