All earthquakes
1.3
very light
EARTHQUAKE DETAILS

3 km East of Nago-Torbole

20 months ago · 10 Jan, 12:29

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

Stronger than 55% of Italian events in the past year

Where

3 km East of Nago-TorboleEarthquakes 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

13 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 ≈ 19 s

Animation sped up ~4× compared to reality.

  • Trento
    26 km from the epicentre
    first tremor in ~5 s
    main shaking in ~9 s
  • Verona
    46 km from the epicentre
    first tremor in ~8 s
    main shaking in ~14 s
  • Vicenza
    59 km from the epicentre
    first tremor in ~10 s
    main shaking in ~18 s
  • Brescia
    65 km from the epicentre
    first tremor in ~11 s
    main shaking in ~19 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

15 km
medium depth
1.7 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 (M1.5, 20 months ago) in the same area. Aftershocks are normal after an earthquake and tend to fade over time.

1.5
The mainshock
3 km North-West of Tione di Trento
20 months ago · 26 Dec, 02:33
Activity in the area right now (30 km radius)
0
last 24 hours
3
last 7 days
13
last 30 days
5 before7 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: 132 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 · 37 km from here
IXDestructive: many buildings partly or fully collapse.
12225.7
Bresciano-Veronese earthquake
25 December 1222 · 43 km from here
19015.4
Garda occidentale earthquake
30 October 1901 · 45 km from here
VII-VIIIRuinous: partial collapses in ordinary buildings, widespread heavy damage.
19325.2
Garda orientale earthquake
19 February 1932 · 29 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

Monte Baldo

The epicentre lies about 2 km from Monte Baldo, one of the seismic structures mapped by INGV geologists.

estimated maximum magnitude 6.7between 3 and 9 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
3 km South-West of Posina
25 km East · 11 km
20 months ago
15 Jan, 18:43
1.2
2 km West of San Zeno di Montagna
27 km South-West · 8 km
20 months ago
20 Jan, 09:30
1.2
2 km South of Bosco Chiesanuova
26 km South-East · 1 km
19 months ago
25 Jan, 06:27
1.5
3 km North-West of Tione di Trento
27 km North-West · 9 km
20 months ago
26 Dec, 02:33
1.4
4 km North-West of Ala
13 km South-East · 12 km
19 months ago
25 Jan, 22:45
1.0
2 km North-West of Posina
25 km East · 14 km
19 months ago
30 Jan, 01:34
1.2
21 months ago
21 Dec, 05:32
1.1
21 months ago
21 Dec, 02:46
1.0
1 km North-East of Borgo Lares
22 km North-West · 6 km
19 months ago
31 Jan, 01:21
1.1
5 km East of Ala
19 km South-East · 9 km
19 months ago
3 Feb, 05:18

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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