Earthquakes today in San Gregorio da Sassola
Today, within 30 km: no earthquakes recorded (updated at 11:02). Latest: M1.3 on 19 September 2026 at 15:46, 2 km North of Monte Compatri, 9 km deep.
Latest earthquake within 30 km
Seismic activity within 30 km
30 km radiusINGV catalogue epicentres of the last ~12 years, within the given radius from the town centre.
How seismic is San Gregorio da Sassola: zone 2
A zone where strong earthquakes are possible: new buildings follow strict anti-seismic criteria.
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 = 0.154 g (10% probability of exceedance in 50 years, rigid soil).
“Within 30 km”: epicentres less than 30 km from the centre of San Gregorio da Sassola. “In the town”: quakes whose nearest town to the epicentre is San Gregorio da Sassola.
The seismic history of San Gregorio da Sassola
The earthquakes that were actually felt in San Gregorio da Sassola over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2001IV20 December 2001
Moderate: felt by many indoors; glasses and dishes rattle.
Valle dell'Aniene earthquake (M4.0), epicentre 10 km away
- 2000IV13 November 2000
Moderate: felt by many indoors; glasses and dishes rattle.
Valle dell'Aniene earthquake (M3.6), epicentre 12 km away
- 2000V27 June 2000
Rather strong: felt by almost everyone; hanging objects swing.
Valle dell'Aniene earthquake (M4.2), epicentre 14 km away
- 2000V-VI11 March 2000
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Valle dell'Aniene earthquake (M4.3), epicentre 13 km away
- 1997V6 November 1997
Rather strong: felt by almost everyone; hanging objects swing.
Monti Tiburtini earthquake (M4.2), epicentre 11 km away
- 1997IV26 September 1997
Moderate: felt by many indoors; glasses and dishes rattle.
Appennino umbro-marchigiano earthquake (M5.7), epicentre 122 km away
- 1961IV-V10 April 1961
Rather strong: felt by almost everyone; hanging objects swing.
Alto Aniene earthquake (M4.5), epicentre 18 km away
- 1915VII13 January 1915
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Marsica earthquake (M7.1), epicentre 56 km away
- 1892V22 January 1892
Rather strong: felt by almost everyone; hanging objects swing.
Colli Albani earthquake (M5.1), epicentre 25 km away
- 1877V24 August 1877
Rather strong: felt by almost everyone; hanging objects swing.
Lazio meridionale earthquake (M5.2), epicentre 47 km away
- 1876V26 October 1876
Rather strong: felt by almost everyone; hanging objects swing.
Monti Prenestini earthquake (M5.1), epicentre 12 km away
- 1795VII15 August 1795
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Monti Tiburtini earthquake (M4.6), epicentre 1 km away
…and 15 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 18 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).
Over time within 30 km
Earthquake map within 30 km
60 eventsLatest earthquakes within 30 km
Nearby towns
How does it compare with the surroundings?
San Gregorio da Sassola 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 Roma1 event · last 30 daysLazio region70 events · last 30 daysFrequently asked questions
Were there earthquakes near San Gregorio da Sassola today?
No, no quakes were recorded today within 30 km of San Gregorio da Sassola. The latest dates back to 19 September 2026.
Is San Gregorio da Sassola a seismic area?
San Gregorio da Sassola is classified in seismic zone 2 by the Civil Protection. A zone where strong earthquakes are possible: new buildings follow strict anti-seismic criteria.
What was the strongest earthquake near San Gregorio da Sassola?
In the INGV catalogue since 2015, the strongest earthquake within 30 km of San Gregorio da Sassola was magnitude 3.6, on 23 June 2019.
When was the last quake near San Gregorio da Sassola?
The last quake recorded within 30 km of San Gregorio da Sassola dates back to 19 September 2026, magnitude 1.3.
Tip. Click a nearby town to explore its seismicity.
Sources:INGV earthquake catalogueDBMI15 macroseismic historyCivil Protection seismic classification
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)