All earthquakes
1.4
very light
EARTHQUAKE DETAILS

M1.4 earthquake · 2 km North-West of Malcesine (VR)

3 years ago · 13 Aug 2023, 22:53

A very light earthquake, probably not felt by people. At this depth the shaking is felt, but rarely causes damage.

Stronger than 63% of Italian events in the past year

Where

2 km North-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

14 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 ≈ 18 s

Animation sped up ~3× compared to reality.

  • Trento
    35 km from the epicentre
    first tremor in ~6 s
    main shaking in ~11 s
  • Verona
    41 km from the epicentre
    first tremor in ~7 s
    main shaking in ~12 s
  • Brescia
    56 km from the epicentre
    first tremor in ~10 s
    main shaking in ~16 s
  • Vicenza
    62 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

13 km
medium depth
1.5 times the height of Mount Everest

At this depth the shaking is felt, but rarely causes damage.

deeper than the area average (~7 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 (M2.0, 3 years ago) in the same area. Aftershocks are normal after an earthquake and tend to fade over time.

2.0
The mainshock
5 km East of Brentonico
3 years ago · 6 Aug 2023, 23:57
Activity in the area right now (30 km radius)
0
last 24 hours
2
last 7 days
7
last 30 days
7 before6 after
this quake
Strongest of the sequence2.0

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 · 33 km from here
19015.4
Garda occidentale earthquake
30 October 1901 · 35 km from here
VII-VIIIRuinous: partial collapses in ordinary buildings, widespread heavy damage.
19325.2
Garda orientale earthquake
19 February 1932 · 19 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

1.6
3 years ago
14 Aug 2023, 19:54
1.3
3 years ago
14 Aug 2023, 19:56
1.0
3 km South-West of Vallarsa
19 km East · 11 km
3 years ago
12 Aug 2023, 03:00
1.2
6 km South of Rovereto
16 km East · 13 km
3 years ago
11 Aug 2023, 14:47
0.8
3 km South-West of Ala
18 km South-East · 8 km
3 years ago
10 Aug 2023, 01:59
2.0
5 km East of Brentonico
14 km East · 11 km
3 years ago
6 Aug 2023, 23:57
0.9
3 km North-East of Ala
17 km East · 10 km
3 years ago
20 Aug 2023, 23:23
0.7
4 km North-East of Ala
18 km East · 9 km
3 years ago
3 Aug 2023, 14:53
1.4
3 years ago
31 Aug 2023, 10:34
1.1
1 km North-East of Tione di Trento
28 km North-West · 9 km
3 years ago
23 Jul 2023, 09:05

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).