Earthquakes in Fortezza
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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?
The quietest class: the probability of strong earthquakes is very low.
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 = 0.045 g (10% probability of exceedance in 50 years, rigid soil).
Why the ground rarely shakes here
Fortezza sits in one of the most stable areas of Italy: far from the boundary between the Eurasian and African plates, on ancient, rigid crust that hardly accumulates tectonic stress any more.
That is why earthquakes here are rare and almost always weak: a small geological privilege.
The “area” is Fortezza plus nearby towns.
The seismic history of Fortezza
The earthquakes that were actually felt in Fortezza over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2001V17 July 2001
Rather strong: felt by almost everyone; hanging objects swing.
Val Venosta earthquake (M4.8), epicentre 39 km away
- 1936IV18 October 1936
Moderate: felt by many indoors; glasses and dishes rattle.
Alpago Cansiglio earthquake (M6.1), epicentre 101 km away · observed at Mezzaselva
- 1934NF4 May 1934
Imperceptible: only instruments record it.
Carnia earthquake (M4.7), epicentre 123 km away · observed at Mezzaselva
- 1924III-IV12 May 1924
Moderate: felt by many indoors; glasses and dishes rattle.
Carnia earthquake (M5.0), epicentre 112 km away
- 1914V-VI27 October 1914
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Lucchesia earthquake (M5.6), epicentre 330 km away
- 1909V13 January 1909
Rather strong: felt by almost everyone; hanging objects swing.
Emilia Romagna orientale earthquake (M5.4), epicentre 247 km away
- 1902V19 June 1902
Rather strong: felt by almost everyone; hanging objects swing.
Alpi Retiche earthquake (M5.0), epicentre 24 km away · observed at Mezzaselva
- 1891F7 June 1891
Moderate: felt by many indoors; glasses and dishes rattle.
Valle d'Illasi earthquake (M5.9), epicentre 141 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 5 km from Western Periadriatic, 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?
Fortezza 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 Bolzano12 events · 30gTrentino-Alto Adige region30 events · 30gFrequently asked questions
Were there earthquakes today in Fortezza?
No, no quakes were recorded today in the Fortezza area: the latest nearby dates back to 9 days ago.
Is Fortezza a seismic area?
Fortezza is classified in seismic zone 4 by the Civil Protection. The quietest class: the probability of strong earthquakes is very low.
What was the strongest earthquake near Fortezza?
In the last ~12 years of INGV data, the strongest within 30 km of Fortezza was magnitude 3.0, in 2017.
When was the last quake near Fortezza?
The last quake recorded within 30 km of Fortezza was 5 months ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)