All earthquakes
1.5
very light
EARTHQUAKE DETAILS

2 km North-West of Furnari

103 months ago · 18 Dec, 10:30

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

Stronger than 68% of Italian events in the past year

Where

2 km North-West of FurnariEarthquakes 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

26 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 ≈ 21 s

Animation sped up ~4× compared to reality.

  • Messina
    37 km from the epicentre
    first tremor in ~6 s
    main shaking in ~11 s
  • Reggio di Calabria
    54 km from the epicentre
    first tremor in ~9 s
    main shaking in ~16 s
  • Acireale
    55 km from the epicentre
    first tremor in ~9 s
    main shaking in ~16 s
  • Catania
    72 km from the epicentre
    first tremor in ~12 s
    main shaking in ~21 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

10 km
medium depth
1.1 times the height of Mount Everest

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

shallower than the area average (~23 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 (M2.7, 104 months ago) in the same area. Aftershocks are normal after an earthquake and tend to fade over time.

2.7
The mainshock
6 km North of Piraino
104 months ago · 8 Dec, 12:36
Activity in the area right now (30 km radius)
7
last 24 hours
31
last 7 days
89
last 30 days
12 before13 after
this quake
Strongest of the sequence2.7

How often does it happen here?

about every ~1 days

Within 50 km of this epicentre, a magnitude ≥ 2 earthquake has occurred on average this often: 2837 events in the last 11 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.

17866.1
Golfo di Patti earthquake
10 March 1786 · 8 km from here
IXDestructive: many buildings partly or fully collapse.
19786.0
Golfo di Patti earthquake
15 April 1978 · 29 km from here
VIIIRuinous: partial collapses in ordinary buildings, widespread heavy damage.
17495.8
Messina earthquake
August 1749 · 40 km from here
VIII-IXDestructive: many buildings partly or fully collapse.
16135.6
Monti Nebrodi earthquake
25 August 1613 · 28 km from here
IXDestructive: many buildings partly or fully collapse.

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

The closest seismic structure

Patti-Giardini

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

estimated maximum magnitude 7.1between 3 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
3 km West of Terme Vigliatore
2 km North-East · 8 km
103 months ago
18 Dec, 03:49
0.9
2 km West of Furnari
2 km South-West · 11 km
103 months ago
18 Dec, 21:25
1.1
2 km North-West of Furnari
1 km South-West · 11 km
103 months ago
19 Dec, 01:23
0.9
103 months ago
19 Dec, 07:41
0.9
1 km North-West of Furnari
1 km South-West · 11 km
103 months ago
19 Dec, 11:40
1.4
2 km North-West of Furnari
0 km West · 10 km
103 months ago
19 Dec, 11:44
1.5
1 km North-West of Furnari
1 km South · 11 km
103 months ago
16 Dec, 20:51
1.6
3 km North of Furnari
1 km North · 10 km
103 months ago
16 Dec, 17:25
0.8
1 km North-West of Furnari
1 km South-East · 12 km
103 months ago
20 Dec, 05:55
1.0
10 km North-East of Patti
12 km North-West · 9 km
103 months ago
20 Dec, 21:10

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).

We use cookies to analyse site traffic and improve your experience.

Privacy PolicyCookie Policy