All earthquakes
1.5
very light
EARTHQUAKE DETAILS

24 km South-East of Taormina

118 months ago · 4 Oct, 14:16

A very light earthquake, probably not felt by people. Being deep, it is felt less at the surface.

Stronger than 68% of Italian events in the past year

Where

24 km South-East of TaorminaEarthquakes in the province of MessinaEarthquakes in Sicilia

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

8 events
Magnitude:lightweakmoderatestrong

The energy released

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

2.7kgof TNT equivalent
Less than the energy of a lightning bolt
M3
A magnitude 3 earthquake releases ×178 its energy
M1this quakeM3

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.

  • Acireale
    32 km from the epicentre
    first tremor in ~7 s
    main shaking in ~13 s
  • Reggio di Calabria
    47 km from the epicentre
    first tremor in ~9 s
    main shaking in ~16 s
  • Catania
    50 km from the epicentre
    first tremor in ~10 s
    main shaking in ~17 s
  • Messina
    53 km from the epicentre
    first tremor in ~10 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

31 km
deep
3.5 times the height of Mount Everest

Being deep, it is felt less at the surface.

deeper than the area average (~11 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 (M2.3, 118 months ago) in the same area. Aftershocks are normal after an earthquake and tend to fade over time.

2.3
The mainshock
17 km South-East of Taormina
118 months ago · 1 Oct, 19:56
Activity in the area right now (30 km radius)
0
last 24 hours
6
last 7 days
17
last 30 days
3 before4 after
this quake
Strongest of the sequence2.3

How often does it happen here?

about every ~3 days

Within 50 km of this epicentre, a magnitude ≥ 2 earthquake has occurred on average this often: 1526 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.

18186.3
Catanese earthquake
20 February 1818 · 35 km from here
IX-XCompletely destructive: most buildings are destroyed.
19905.6
Sicilia sud-orientale earthquake
13 December 1990 · 46 km from here
VII-VIIIRuinous: partial collapses in ordinary buildings, widespread heavy damage.
15095.6
Stretto di Messina earthquake
25 February 1509 · 45 km from here
IXDestructive: many buildings partly or fully collapse.
17805.5
Sicilia nord-orientale earthquake
28 March 1780 · 24 km from here
VII-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

Artemide

The epicentre lies about 1 km from Artemide, one of the seismic structures mapped by INGV geologists.

estimated maximum magnitude 6.2between 11 and 20 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

1.7
13 km East of Acireale
20 km South-West · 26 km
118 months ago
7 Oct, 00:59
2.3
17 km South-East of Taormina
7 km North-West · 28 km
118 months ago
1 Oct, 19:56
2.3
10 km East of Acireale
23 km South-West · 8 km
118 months ago
9 Oct, 23:38
1.8
118 months ago
28 Sept, 12:44
1.6
7 km East of Riposto
21 km West · 27 km
118 months ago
27 Sept, 07:34
2.3
117 months ago
25 Oct, 09:40
1.9
20 km South-East of Taormina
5 km North-West · 28 km
117 months ago
25 Oct, 21:50

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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