All earthquakes
1.3
very light
EARTHQUAKE DETAILS

3 km West of Malcesine

76 months ago · 29 May, 21:11

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

3 km West of MalcesineEarthquakes 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

20 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 ≈ 18 s

Animation sped up ~3× compared to reality.

  • Trento
    38 km from the epicentre
    first tremor in ~7 s
    main shaking in ~11 s
  • Verona
    39 km from the epicentre
    first tremor in ~7 s
    main shaking in ~12 s
  • Brescia
    53 km from the epicentre
    first tremor in ~9 s
    main shaking in ~15 s
  • Vicenza
    63 km from the epicentre
    first tremor in ~11 s
    main shaking in ~18 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

8 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?

Foreshock

In hindsight it was a foreshock: 75 months ago the same area had a stronger quake (M1.5). This can only be said after the fact — it was not predictable beforehand.

1.5
The mainshock
3 km West of Mori
75 months ago · 22 Jun, 08:23
Activity in the area right now (30 km radius)
0
last 24 hours
2
last 7 days
12
last 30 days
13 before6 after
this quake
Strongest of the sequence1.5

How often does it happen here?

about every ~32 days

Within 50 km of this epicentre, a magnitude ≥ 2 earthquake has occurred on average this often: 135 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.

18915.9
Valle d'Illasi earthquake
7 June 1891 · 36 km from here
IXDestructive: many buildings partly or fully collapse.
12225.7
Bresciano-Veronese earthquake
25 December 1222 · 30 km from here
19015.4
Garda occidentale earthquake
30 October 1901 · 32 km from here
VII-VIIIRuinous: partial collapses in ordinary buildings, widespread heavy damage.
19325.2
Garda orientale earthquake
19 February 1932 · 17 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

Giudicarie

The epicentre sits above this source area: the deep structure where this area's earthquakes can originate.

estimated maximum magnitude 6.8between 5 and 12 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

1.0
4 km West of Malcesine
2 km South-West · 11 km
76 months ago
29 May, 22:59
1.1
2 km South-West of Tione di Trento
28 km North-West · 7 km
76 months ago
29 May, 13:53
0.7
1 km South-East of Nomi
29 km North-East · 11 km
76 months ago
31 May, 05:29
1.3
3 km South-West of Mori
13 km North-East · 16 km
76 months ago
27 May, 10:47
0.9
0 km East of Rovereto
22 km North-East · 11 km
76 months ago
27 May, 00:53
1.1
1 km North of Ala
18 km East · 11 km
76 months ago
26 May, 02:13
1.2
2 km West of Tione di Trento
29 km North-West · 10 km
76 months ago
24 May, 08:57
1.3
2 km West of Tione di Trento
28 km North-West · 9 km
76 months ago
23 May, 09:54
1.1
3 km South-West of Mori
13 km North-East · 17 km
76 months ago
23 May, 09:33
1.4
2 km South-West of Tione di Trento
28 km North-West · 8 km
76 months ago
20 May, 23:23

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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