Earthquakes today in Bionaz
Today, within 30 km: no earthquakes recorded (updated at 13:13). Latest: M0.7 on 9 October 2026 at 12:44, 2 km West of Oyace, 7 km deep.
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 Bionaz: zone 3
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 = 0.128 g (10% probability of exceedance in 50 years, rigid soil).
“Within 30 km”: epicentres less than 30 km from the centre of Bionaz. “In the town”: quakes whose nearest town to the epicentre is Bionaz.
The seismic history of Bionaz
The earthquakes that were actually felt in Bionaz over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2005IV8 September 2005
Moderate: felt by many indoors; glasses and dishes rattle.
Massif du Mont-Blanc earthquake (M4.4), epicentre 50 km away
- 1996IV-V31 March 1996
Rather strong: felt by almost everyone; hanging objects swing.
Valle d'Aosta earthquake (M4.2), epicentre 4 km away
- 1887NF23 February 1887
Imperceptible: only instruments record it.
Liguria occidentale earthquake (M6.3), epicentre 229 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 30 km from Western Valais, 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?
Bionaz sits in one of the most seismically active areas of its province: quakes are a familiar presence here, almost always light.
Each quake is attributed to the town closest to its epicentre: the numbers describe the area, not the municipal territory alone.
Context
Province of Aosta39 events · last 30 daysAosta Valley region39 events · last 30 daysFrequently asked questions
Were there earthquakes near Bionaz today?
No, no quakes were recorded today within 30 km of Bionaz. The latest dates back to 9 October 2026.
Is Bionaz a seismic area?
Bionaz 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 Bionaz?
In the INGV catalogue since 2015, the strongest earthquake within 30 km of Bionaz was magnitude 3.9, on 5 October 2021.
When was the last quake near Bionaz?
The last quake recorded within 30 km of Bionaz dates back to 9 October 2026, magnitude 0.7.
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)