All earthquakes
1.3
very light
EARTHQUAKE DETAILS

5 km East of Soverzene

28 months ago · 12 May, 11:04

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 55% of Italian events in the past year

Where

5 km East of SoverzeneEarthquakes in the province of BellunoEarthquakes 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

19 events
Magnitude:lightweakmoderatestrong

The energy released

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

1.3kgof TNT equivalent
Less than the energy of a lightning bolt
M3
A magnitude 3 earthquake releases ×355 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 ≈ 23 s

Animation sped up ~4× compared to reality.

  • Pordenone
    35 km from the epicentre
    first tremor in ~6 s
    main shaking in ~10 s
  • Treviso
    59 km from the epicentre
    first tremor in ~10 s
    main shaking in ~17 s
  • Udine
    69 km from the epicentre
    first tremor in ~12 s
    main shaking in ~20 s
  • Venezia
    80 km from the epicentre
    first tremor in ~13 s
    main shaking in ~23 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 (~9 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 (M2.1, 28 months ago) in the same area. Aftershocks are normal after an earthquake and tend to fade over time.

2.1
The mainshock
5 km West of Chies d'Alpago
28 months ago · 11 May, 02:11
Activity in the area right now (30 km radius)
0
last 24 hours
2
last 7 days
5
last 30 days
10 before8 after
this quake
Strongest of the sequence2.1

How often does it happen here?

about every ~23 days

Within 50 km of this epicentre, a magnitude ≥ 2 earthquake has occurred on average this often: 188 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.

18736.3
Alpago Cansiglio earthquake
29 June 1873 · 3 km from here
IX-XCompletely destructive: most buildings are destroyed.
19366.1
Alpago Cansiglio earthquake
18 October 1936 · 11 km from here
IXDestructive: many buildings partly or fully collapse.
17946.0
Prealpi Friulane earthquake
7 June 1794 · 37 km from here
IXDestructive: many buildings partly or fully collapse.
17765.8
Prealpi Friulane earthquake
10 July 1776 · 26 km from here
VIII-IXDestructive: many buildings partly or fully collapse.

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

The closest seismic structure

Bassano-Vittorio Veneto

The epicentre lies about 11 km from Bassano-Vittorio Veneto, one of the seismic structures mapped by INGV geologists.

estimated maximum magnitude 6.9between 1 and 10 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

1.5
4 km West of Chies d'Alpago
2 km South · 10 km
28 months ago
12 May, 11:05
1.3
5 km West of Chies d'Alpago
1 km South · 7 km
28 months ago
12 May, 11:09
1.2
4 km West of Chies d'Alpago
1 km East · 10 km
28 months ago
11 May, 15:12
1.4
5 km West of Chies d'Alpago
1 km South-East · 10 km
28 months ago
11 May, 15:07
1.6
4 km West of Chies d'Alpago
2 km South-East · 10 km
28 months ago
11 May, 15:01
1.9
5 km South-East of Soverzene
1 km South-West · 9 km
28 months ago
11 May, 14:05
1.4
4 km West of Chies d'Alpago
2 km South-East · 10 km
28 months ago
11 May, 02:34
2.1
28 months ago
11 May, 02:11
0.7
5 km North-West of Chies d'Alpago
1 km North-East · 14 km
28 months ago
14 May, 02:30
1.0
6 km North-West of Barcis
11 km East · 11 km
28 months ago
8 May, 10:06

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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