Earthquakes in Riesi
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?
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 = 0.068 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Riesi plus nearby towns.
The seismic history of Riesi
The earthquakes that were actually felt in Riesi over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2005NF21 November 2005
Imperceptible: only instruments record it.
Sicilia centrale earthquake (M4.6), epicentre 33 km away
- 2004NF5 May 2004
Imperceptible: only instruments record it.
Isole Eolie earthquake (M5.4), epicentre 152 km away
- 1994NF6 May 1994
Imperceptible: only instruments record it.
Sicilia centrale earthquake (M4.4), epicentre 40 km away
- 1994NF5 January 1994
Imperceptible: only instruments record it.
Tirreno meridionale earthquake (M5.8), epicentre 228 km away
- 1990IV-V13 December 1990
Rather strong: felt by almost everyone; hanging objects swing.
Sicilia sud-orientale earthquake (M5.6), epicentre 119 km away
- 1990NF29 October 1990
Imperceptible: only instruments record it.
Stretto di Sicilia earthquake (M4.8), epicentre 130 km away
- 1968V15 January 1968
Rather strong: felt by almost everyone; hanging objects swing.
Valle del Belice earthquake (M6.4), epicentre 110 km away
- 1959IV23 December 1959
Moderate: felt by many indoors; glasses and dishes rattle.
Piana di Catania earthquake (M5.1), epicentre 73 km away
- 1905NF8 September 1905
Imperceptible: only instruments record it.
Calabria centrale earthquake (M7.0), epicentre 238 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 12 km from Sciacca-Gela, 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?
Riesi 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 Caltanissetta0 events · 30gSicily region127 events · 30gFrequently asked questions
Were there earthquakes today in Riesi?
No, no quakes were recorded today in the Riesi area: the latest nearby dates back to 1 month ago.
Is Riesi a seismic area?
Riesi 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 Riesi?
In the last ~12 years of INGV data, the strongest within 30 km of Riesi was magnitude 3.4, in 2025.
When was the last quake near Riesi?
The last quake recorded within 30 km of Riesi was 7 days ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)