Province of Siena

Earthquakes in Colle di Val d'Elsa

1.7
very light
LATEST QUAKE

4 km East of San Casciano in Val di Pesa

12 days ago · 13 Aug, 06:48
Depth 10 km

Seismic activity in the surroundings

30 km radius
12
days since the last quake nearby
2,078
quakes recorded since 2014
~2 days
on average, one quake every
3.9
The strongest within 30 km
4 km East of Castelfiorentino
120 months ago · 25 Oct, 18:53

INGV catalogue epicentres of the last ~12 years, within the given radius from the town centre.

How seismic is this area?

Zone3
Seismic zone 3

Medium-low seismicity: strong quakes are rare, but not impossible.

Official Civil Protection classification (upd. 2025), used for building codes.

Low
Expected shaking, compared with the other Italian municipalities (INGV MPS04 model)

Hazard describes the long-term expected shaking: it is not a forecast. Technical value: ag = 0.141 g (10% probability of exceedance in 50 years, rigid soil).

Closest earthquake
Earthquake details
87
In the town
total on record
2
In the town
last 12 months
118
In the area
last 12 months
M3.9
Strongest ever
In the area

The “area” is Colle di Val d'Elsa plus nearby towns.

Last earthquake: 6 months ago · 21,256 inhabitants

The seismic history of Colle di Val d'Elsa

The earthquakes that were actually felt in Colle di Val d'Elsa over the centuries, with the intensity observed on site (Mercalli MCS scale).

  1. 1993IV6 August 1993

    Moderate: felt by many indoors; glasses and dishes rattle.

    Colline Metallifere earthquake (M4.0), epicentre 17 km away

  2. 1914V27 October 1914

    Rather strong: felt by almost everyone; hanging objects swing.

    Lucchesia earthquake (M5.6), epicentre 69 km away

  3. 1909VI25 August 1909

    Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.

    Crete Senesi earthquake (M5.3), epicentre 38 km away

  4. 1906V-VI21 April 1906

    Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.

    Valdelsa earthquake (M4.3), epicentre 6 km away

  5. 1897V22 May 1897

    Rather strong: felt by almost everyone; hanging objects swing.

    Valdelsa earthquake (M4.3), epicentre 8 km away

  6. 1895V25 October 1895

    Rather strong: felt by almost everyone; hanging objects swing.

    Chianti earthquake (M4.5), epicentre 17 km away

  7. 1895V18 May 1895

    Rather strong: felt by almost everyone; hanging objects swing.

    Fiorentino earthquake (M5.5), epicentre 36 km away

  8. 1890V15 February 1890

    Rather strong: felt by almost everyone; hanging objects swing.

    Valdelsa earthquake (M4.5), epicentre 21 km away

  9. 1869VI26 September 1869

    Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.

    Valdelsa earthquake (M5.0), epicentre 5 km away

  10. 1804VI17 December 1804

    Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.

    Valdelsa earthquake (M4.8), epicentre 6 km away

  11. 1804VII18 October 1804

    Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.

    Valdelsa earthquake (M5.1), epicentre 5 km away

  12. 1558V13 April 1558

    Rather strong: felt by almost everyone; hanging objects swing.

    Valdarno superiore earthquake (M6.0), epicentre 39 km away

…and 21 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.

18466.0
Colline Pisane earthquake
14 August 1846 · 43 km from here
XCompletely destructive: most buildings are destroyed.
15586.0
Valdarno superiore earthquake
13 April 1558 · 39 km from here
IXDestructive: many buildings partly or fully collapse.
14145.7
Colline Metallifere earthquake
7 August 1414 · 15 km from here
VII-VIIIRuinous: partial collapses in ordinary buildings, widespread heavy damage.
18955.5
Fiorentino earthquake
18 May 1895 · 36 km from here
VIIIRuinous: partial collapses in ordinary buildings, widespread heavy damage.

Source: Parametric Catalogue of Italian Earthquakes CPTI15 (INGV, CC BY 4.0).

The closest seismic structure

Livorno Hills

The town lies about 44 km from Livorno Hills, one of the seismic structures mapped by INGV geologists.

estimated maximum magnitude 6.2between 1 and 7 km deep

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

August 20264eventsmax 1.9
Oct
Jan '25
Apr
Jul
Oct
Jan '26
Apr
Jul

Earthquake map

60 events
Magnitude:lightweakmoderatestrong

Earthquakes in the area

1.7
12 days ago
13 Aug, 06:48
1.1
8 km West of Sovicille
18 km South · 10 km
19 days ago
6 Aug, 21:15
1.9
4 km South-West of Lajatico
33 km West · 5 km
23 days ago
2 Aug, 20:12
1.4
3 km North-East of Poggibonsi
12 km North-East · 10 km
23 days ago
2 Aug, 11:44
1.8
2 km South-West of San Gimignano
9 km North-West · 7 km
28 days ago
28 Jul, 10:52
1.5
1 month ago
22 Jul, 19:29
1.6
1 month ago
22 Jul, 19:05
0.9
1 month ago
22 Jul, 18:40
0.9
3 km East of Castelfiorentino
26 km North-West · 10 km
1 month ago
18 Jul, 22:00
1.0
2 km East of Siena
23 km South-East · 10 km
1 month ago
16 Jul, 10:05

Nearby towns

How does it compare with the surroundings?

Colle di Val d'Elsa sits in one of the most seismically active areas of its province: quakes are a familiar presence here, almost always light.

quietermore active
More epicentres than 91% of the 35 towns in the province.
Colle di Val d'Elsa87
Nearby towns average153

Each quake is attributed to the town closest to its epicentre: the numbers describe the area, not the municipal territory alone.

Context

Province of Siena8 events · 30gTuscany region113 events · 30g
ISTAT code: 052012

Frequently asked questions

Were there earthquakes today in Colle di Val d'Elsa?

No, no quakes were recorded today in the Colle di Val d'Elsa area: the latest nearby dates back to 12 days ago.

Is Colle di Val d'Elsa a seismic area?

Colle di Val d'Elsa 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 Colle di Val d'Elsa?

In the last ~12 years of INGV data, the strongest within 30 km of Colle di Val d'Elsa was magnitude 3.9, in 2016.

When was the last quake near Colle di Val d'Elsa?

The last quake recorded within 30 km of Colle di Val d'Elsa was 12 days ago.

Tip. Click a nearby town to explore its seismicity.

Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)

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