Earthquakes in Blera
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?
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 = 0.123 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Blera plus nearby towns.
The seismic history of Blera
The earthquakes that were actually felt in Blera over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2005NF15 December 2005
Imperceptible: only instruments record it.
Val Nerina earthquake (M4.1), epicentre 84 km away
- 1997NF14 October 1997
Imperceptible: only instruments record it.
Valnerina earthquake (M5.6), epicentre 105 km away
- 1997III26 September 1997
Light: felt by few people, like a passing truck.
Appennino umbro-marchigiano earthquake (M6.0), epicentre 112 km away
- 1997NF26 September 1997
Imperceptible: only instruments record it.
Appennino umbro-marchigiano earthquake (M5.7), epicentre 115 km away
- 1984III29 April 1984
Light: felt by few people, like a passing truck.
Umbria settentrionale earthquake (M5.6), epicentre 123 km away
- 1979IV19 September 1979
Moderate: felt by many indoors; glasses and dishes rattle.
Valnerina earthquake (M5.8), epicentre 96 km away
- 1971V-VI6 February 1971
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Tuscania earthquake (M4.8), epicentre 27 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 7 km away · observed at Civitella Cesi
- 1969V2 July 1969
Rather strong: felt by almost everyone; hanging objects swing.
Monti della Tolfa earthquake (M4.8), epicentre 7 km away
- 1951NF1 September 1951
Imperceptible: only instruments record it.
Monti Sibillini earthquake (M5.3), epicentre 138 km away
- 1915V13 January 1915
Rather strong: felt by almost everyone; hanging objects swing.
Marsica earthquake (M7.1), epicentre 128 km away
- 1877V23 December 1877
Rather strong: felt by almost everyone; hanging objects swing.
Viterbese earthquake (M4.7), epicentre 12 km away
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 79 km from Salto Lake-Ovindoli-Barrea, 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
24 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Blera 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 Viterbo1 events · 30gLazio region79 events · 30gFrequently asked questions
Were there earthquakes today in Blera?
No, no quakes were recorded today in the Blera area: the latest nearby dates back to 3 months ago.
Is Blera a seismic area?
Blera 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 Blera?
In the last ~12 years of INGV data, the strongest within 30 km of Blera was magnitude 2.5, in 2017.
When was the last quake near Blera?
The last quake recorded within 30 km of Blera 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)