All earthquakes
1.4
very light
EARTHQUAKE DETAILS

1 km North-East of Velo d'Astico

126 months ago · 10 Apr, 07:29

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 63% of Italian events in the past year

Where

1 km North-East of Velo d'AsticoEarthquakes in the province of VicenzaEarthquakes 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

12 events
Magnitude:lightweakmoderatestrong

The energy released

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

1.9kgof TNT equivalent
Less than the energy of a lightning bolt
M3
A magnitude 3 earthquake releases ×251 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 ≈ 17 s

Animation sped up ~3× compared to reality.

  • Vicenza
    30 km from the epicentre
    first tremor in ~5 s
    main shaking in ~9 s
  • Trento
    35 km from the epicentre
    first tremor in ~6 s
    main shaking in ~10 s
  • Verona
    48 km from the epicentre
    first tremor in ~8 s
    main shaking in ~14 s
  • Padova
    59 km from the epicentre
    first tremor in ~10 s
    main shaking in ~17 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

6 km
shallow

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

in line with the area average (~6 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?

Foreshock

In hindsight it was a foreshock: 126 months ago the same area had a stronger quake (M2.5). This can only be said after the fact — it was not predictable beforehand.

2.5
The mainshock
5 km South-West of Rovereto
126 months ago · 15 Apr, 05:18
Activity in the area right now (30 km radius)
0
last 24 hours
0
last 7 days
9
last 30 days
6 before5 after
this quake
Strongest of the sequence2.5

How often does it happen here?

about every ~36 days

Within 50 km of this epicentre, a magnitude ≥ 2 earthquake has occurred on average this often: 117 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.

16956.4
Asolano earthquake
25 February 1695 · 43 km from here
XCompletely destructive: most buildings are destroyed.
18915.9
Valle d'Illasi earthquake
7 June 1891 · 30 km from here
IXDestructive: many buildings partly or fully collapse.
18365.5
Asolano earthquake
12 June 1836 · 36 km from here
VIIIRuinous: partial collapses in ordinary buildings, widespread heavy damage.
18825.1
Monte Baldo earthquake
18 September 1882 · 47 km from here
VIIVery strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.

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

The closest seismic structure

Schio-Vicenza

The epicentre lies about 2 km from Schio-Vicenza, one of the seismic structures mapped by INGV geologists.

estimated maximum magnitude 7.3between 1 and 15 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

2.5
5 km South-West of Rovereto
28 km West · 11 km
126 months ago
15 Apr, 05:18
1.2
1 km West of Luserna
16 km North · 10 km
127 months ago
1 Apr, 16:31
1.2
2 km North of Velo d'Astico
2 km North-West · 16 km
126 months ago
20 Apr, 16:20
1.5
4 km South-West of Vallarsa
21 km West · 11 km
127 months ago
30 Mar, 22:01
1.2
1 km North of Chiuppano
9 km East · 7 km
127 months ago
28 Mar, 22:06
0.9
127 months ago
25 Mar, 23:55
2.2
2 km North of Badia Calavena
28 km South-West · 10 km
126 months ago
25 Apr, 19:18
1.4
1 km South of Rotzo
11 km North · 15 km
127 months ago
23 Mar, 18:39
0.8
3 km North of Ala
25 km West · 10 km
126 months ago
29 Apr, 21:01
0.9
3 km East of Vallarsa
17 km West · 12 km
126 months ago
30 Apr, 05:50

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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