All earthquakes
1.1
very light
EARTHQUAKE DETAILS

1 km North-West of Bosco Chiesanuova

57 months ago · 22 Dec, 01:38

A very light earthquake, probably not felt by people. At only a few km deep the shaking is felt more sharply at the surface.

Stronger than 39% of Italian events in the past year

Where

1 km North-West of Bosco ChiesanuovaEarthquakes in the province of VeronaEarthquakes in Veneto

How far away could it be felt?

A quake this small is usually not felt by people: only seismographs record it.

Statistical estimate from the Italian intensity attenuation model (INGV): actual perception depends on geology, buildings and depth. Very shallow events can be felt locally even below the threshold.

Earthquake map

15 events
Magnitude:lightweakmoderatestrong

The energy released

How much energy this quake unleashed, translated into everyday comparisons.

0.7kgof TNT equivalent
Less than the energy of a lightning bolt
M3
A magnitude 3 earthquake releases ×708 its energy
M0this quakeM2

Each extra magnitude unit releases about 32 times more energy: an M5 is not "a bit stronger" than an M4 — it is a different league.

Energy estimated with the standard Gutenberg–Richter relation; an average lightning bolt ≈ 1 billion joules. Indicative values.

The race of the seismic waves

Two waves set off from the hypocentre: the faster P wave arrives first with a sharp jolt; the S wave carries the actual shaking.

P waves — the first sharp jolt (~6 km/s)S waves — the strongest shaking (~3.5 km/s)
t ≈ 19 s

Animation sped up ~4× compared to reality.

  • Verona
    24 km from the epicentre
    first tremor in ~4 s
    main shaking in ~7 s
  • Vicenza
    41 km from the epicentre
    first tremor in ~7 s
    main shaking in ~12 s
  • Trento
    44 km from the epicentre
    first tremor in ~7 s
    main shaking in ~13 s
  • Brescia
    66 km from the epicentre
    first tremor in ~11 s
    main shaking in ~19 s

Theoretical times with average crustal speeds: real values vary with geology. The gap between P and S waves is what earthquake early-warning systems rely on.

How deep it was born

9 km
shallow

At only a few km deep the shaking is felt more sharply at the surface.

in line with the area average (~11 km)

For the same magnitude, a shallow earthquake is felt much more than a deep one: the energy starts closer to the surface.

What kind of quake is this?

Aftershock

It is an aftershock: it follows a stronger quake (M2.3, 57 months ago) in the same area. Aftershocks are normal after an earthquake and tend to fade over time.

2.3
The mainshock
1 km North-East of Posina
57 months ago · 14 Dec, 10:58
Activity in the area right now (30 km radius)
1
last 24 hours
1
last 7 days
9
last 30 days
10 before4 after
this quake
Strongest of the sequence2.3

How often does it happen here?

about every ~30 days

Within 50 km of this epicentre, a magnitude ≥ 2 earthquake has occurred on average this often: 141 events in the last 12 years of the INGV catalogue.

An average computed on the recent past: it tells how used this area is to shaking, not when the next quake will come — earthquakes cannot be predicted.

The great earthquakes in this area's history

Almost a thousand years of catalogues: the strongest documented events within ~50 km.

11176.5
Veronese earthquake
3 January 1117 · 43 km from here
IXDestructive: many buildings partly or fully collapse.
18915.9
Valle d'Illasi earthquake
7 June 1891 · 14 km from here
IXDestructive: many buildings partly or fully collapse.
12225.7
Bresciano-Veronese earthquake
25 December 1222 · 36 km from here
19015.4
Garda occidentale earthquake
30 October 1901 · 44 km from here
VII-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

Monte Baldo

The epicentre lies about 10 km from Monte Baldo, one of the seismic structures mapped by INGV geologists.

estimated maximum magnitude 6.7between 3 and 9 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).

Other quakes in the area

2.0
3 km South of Arco
29 km North-West · 11 km
57 months ago
21 Dec, 00:35
1.0
3 km South of Arco
30 km North-West · 13 km
57 months ago
20 Dec, 23:08
0.8
3 km West of Ronzo-Chienis
29 km North-West · 13 km
57 months ago
25 Dec, 18:56
0.9
2 km South-East of Volano
28 km North · 11 km
57 months ago
26 Dec, 05:57
2.0
4 km South-East of Mori
21 km North · 11 km
57 months ago
17 Dec, 03:10
2.3
1 km North-East of Posina
24 km North-East · 11 km
57 months ago
14 Dec, 10:58
1.4
2 km West of Erbezzo
6 km West · 12 km
57 months ago
12 Dec, 18:01
1.5
3 km East of Vallarsa
19 km North-East · 15 km
57 months ago
31 Dec, 17:27
1.4
4 km East of Vallarsa
19 km North-East · 16 km
57 months ago
31 Dec, 17:28
1.1
4 km South of Rovereto
20 km North · 11 km
57 months ago
8 Dec, 05:22

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

Estimates computed by Meteare on INGV data (Gutenberg–Richter relation; Italian macroseismic intensity attenuation model).

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