All earthquakes
0.8
very light
EARTHQUAKE DETAILS

2 km West of Albiano

59 months ago · 27 Oct, 17:01

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 16% of Italian events in the past year

Where

2 km West of AlbianoEarthquakes in the province of TrentoEarthquakes in Trentino-Alto Adige

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

27 events
Magnitude:lightweakmoderatestrong

The energy released

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

0.2kgof TNT equivalent
Less than the energy of a lightning bolt
M3
A magnitude 3 earthquake releases ×1,995 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 ≈ 22 s

Animation sped up ~4× compared to reality.

  • Trento
    11 km from the epicentre
    first tremor in ~2 s
    main shaking in ~3 s
  • Bolzano
    42 km from the epicentre
    first tremor in ~7 s
    main shaking in ~12 s
  • Vicenza
    71 km from the epicentre
    first tremor in ~12 s
    main shaking in ~20 s
  • Verona
    78 km from the epicentre
    first tremor in ~13 s
    main shaking in ~22 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

1 km
shallow

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

shallower than 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?

Aftershock

It is an aftershock: it follows a stronger quake (M1.3, 59 months ago) in the same area. Aftershocks are normal after an earthquake and tend to fade over time.

1.3
The mainshock
1 km North-West of Albiano
59 months ago · 21 Oct, 18:11
Activity in the area right now (30 km radius)
0
last 24 hours
0
last 7 days
6
last 30 days
12 before14 after
this quake
Strongest of the sequence1.3

How often does it happen here?

about every ~52 days

Within 50 km of this epicentre, a magnitude ≥ 2 earthquake has occurred on average this often: 82 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.

19764.9
Garda settentrionale earthquake
13 December 1976 · 39 km from here
VIIVery strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
19484.9
Garda settentrionale earthquake
19 July 1948 · 48 km from here
V-VIStrong: felt by everyone, many get scared; objects fall, first light damage to buildings.
19894.8
Prealpi Vicentine earthquake
13 September 1989 · 29 km from here
VI-VIIVery strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
19314.8
Valli Giudicarie earthquake
14 April 1931 · 42 km from here
VIStrong: felt by everyone, many get scared; objects fall, first light damage to buildings.

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

The closest seismic structure

Giudicarie

The epicentre lies about 9 km from Giudicarie, one of the seismic structures mapped by INGV geologists.

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

0.6
2 km North-West of Albiano
2 km North-East · 1 km
59 months ago
28 Oct, 18:02
0.9
2 km West of Albiano
1 km North · 1 km
59 months ago
25 Oct, 12:10
0.8
1 km South of Nomi
24 km South · 9 km
59 months ago
31 Oct, 05:31
1.3
1 km North-West of Albiano
2 km North-East · 1 km
59 months ago
21 Oct, 18:11
0.9
59 months ago
3 Nov, 12:29
0.9
1 km North-West of Albiano
2 km North-East · 1 km
59 months ago
3 Nov, 16:46
0.8
2 km West of Albiano
1 km North-East · 1 km
59 months ago
4 Nov, 17:15
1.1
1 km West of Albiano
1 km North-East · 1 km
59 months ago
4 Nov, 17:23
0.8
2 km East of Giovo
7 km North-East · 1 km
59 months ago
18 Oct, 12:07
0.9
0 km West of Civezzano
4 km South · 1 km
59 months ago
14 Oct, 17:21

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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