Earthquakes today in San Costanzo
Today, within 30 km: no earthquakes recorded (updated at 10:44). Latest: M0.8 on 1 October 2026 at 12:34, 4 km West of Arcevia, 23 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 San Costanzo: 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 = 0.184 g (10% probability of exceedance in 50 years, rigid soil).
“Within 30 km”: epicentres less than 30 km from the centre of San Costanzo. “In the town”: quakes whose nearest town to the epicentre is San Costanzo.
The seismic history of San Costanzo
The earthquakes that were actually felt in San Costanzo over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 1997V-VI26 September 1997
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Appennino umbro-marchigiano earthquake (M6.0), epicentre 83 km away
- 1997V-VI26 September 1997
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Appennino umbro-marchigiano earthquake (M5.7), epicentre 82 km away
- 1972VI-VII14 June 1972
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Costa anconetana earthquake (M4.7), epicentre 34 km away
- 1972VI4 February 1972
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Costa anconetana earthquake (M4.4), epicentre 26 km away
- 1972VI4 February 1972
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Costa anconetana earthquake (M4.6), epicentre 32 km away
- 1931V-VI25 June 1931
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Senigallia earthquake (M4.0), epicentre 6 km away
- 1930VIII30 October 1930
Ruinous: partial collapses in ordinary buildings, widespread heavy damage.
Senigallia earthquake (M5.8), epicentre 28 km away
- 1928V30 May 1928
Rather strong: felt by almost everyone; hanging objects swing.
Senigallia earthquake (M5.0), epicentre 19 km away
- 1924VII-VIII2 January 1924
Ruinous: partial collapses in ordinary buildings, widespread heavy damage.
Senigallia earthquake (M5.5), epicentre 8 km away
- 1916V16 August 1916
Rather strong: felt by almost everyone; hanging objects swing.
Riminese earthquake (M5.8), epicentre 39 km away
- 1916V16 August 1916
Rather strong: felt by almost everyone; hanging objects swing.
Riminese earthquake (M5.8), epicentre 39 km away · observed at Cerasa
- 1741VI24 April 1741
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Fabrianese earthquake (M6.2), epicentre 36 km away
…and 17 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 sits above this source area: the deep structure where this area's earthquakes can originate.
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 Costanzo records more quakes than the average of its province.
Each quake is attributed to the town closest to its epicentre: the numbers describe the area, not the municipal territory alone.
Context
Province of Pesaro e Urbino71 events · last 30 daysMarche region337 events · last 30 daysFrequently asked questions
Were there earthquakes near San Costanzo today?
No, no quakes were recorded today within 30 km of San Costanzo. The latest dates back to 1 October 2026.
Is San Costanzo a seismic area?
San Costanzo 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 Costanzo?
In the INGV catalogue since 2015, the strongest earthquake within 30 km of San Costanzo was magnitude 4.2, on 6 October 2025.
When was the last quake near San Costanzo?
The last quake recorded within 30 km of San Costanzo dates back to 1 October 2026, magnitude 0.8.
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)