Earthquakes in Gragnano
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 = 0.105 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Gragnano plus nearby towns.
The seismic history of Gragnano
The earthquakes that were actually felt in Gragnano over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 1996IV-V3 April 1996
Rather strong: felt by almost everyone; hanging objects swing.
Irpinia earthquake (M4.9), epicentre 78 km away
- 1990V5 May 1990
Rather strong: felt by almost everyone; hanging objects swing.
Potentino earthquake (M5.8), epicentre 102 km away
- 1981V-VI14 February 1981
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Monti di Avella earthquake (M4.9), epicentre 35 km away
- 1980VII23 November 1980
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Irpinia-Basilicata earthquake (M6.8), epicentre 65 km away
- 1930VII23 July 1930
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Irpinia earthquake (M6.7), epicentre 78 km away
- 1915V13 January 1915
Rather strong: felt by almost everyone; hanging objects swing.
Marsica earthquake (M7.1), epicentre 170 km away
- 1910V7 June 1910
Rather strong: felt by almost everyone; hanging objects swing.
Irpinia-Basilicata earthquake (M5.8), epicentre 78 km away
- 1857VII-VIII16 December 1857
Ruinous: partial collapses in ordinary buildings, widespread heavy damage.
Basilicata earthquake (M7.1), epicentre 117 km away
- 1805VII26 July 1805
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Molise earthquake (M6.7), epicentre 91 km away
- 1694V7 October 1694
Rather strong: felt by almost everyone; hanging objects swing.
Penisola sorrentina earthquake (M4.7), epicentre 7 km away
- 1694VII8 September 1694
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Irpinia-Basilicata earthquake (M6.7), epicentre 76 km away · observed at Sant'Erasmo
- 1694VI-VII8 September 1694
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Irpinia-Basilicata earthquake (M6.7), epicentre 76 km away
…and 6 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 lies about 52 km from Ischia, 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
3 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Gragnano 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 Napoli112 events · 30gCampania region129 events · 30gFrequently asked questions
Were there earthquakes today in Gragnano?
No, no quakes were recorded today in the Gragnano area: the latest nearby dates back to 35 months ago.
Is Gragnano a seismic area?
Gragnano 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 Gragnano?
In the last ~12 years of INGV data, the strongest within 30 km of Gragnano was magnitude 3.1, in 2024.
When was the last quake near Gragnano?
The last quake recorded within 30 km of Gragnano was 4 days ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)