All earthquakes
1.4
very light
EARTHQUAKE DETAILS

2 km North of Furnari

130 months ago · 15 Oct, 13:41

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

Stronger than 62% of Italian events in the past year

Where

2 km North 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

60 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 ≈ 21 s

Animation sped up ~4× compared to reality.

  • Messina
    37 km from the epicentre
    first tremor in ~7 s
    main shaking in ~12 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 ~10 s
    main shaking in ~17 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

18 km
medium depth
2 times the height of Mount Everest

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

in line with 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 (M3.1, 130 months ago) in the same area. Aftershocks are normal after an earthquake and tend to fade over time.

3.1
The mainshock
2 km West of Merì
130 months ago · 13 Oct, 04:25
Activity in the area right now (30 km radius)
22
last 24 hours
56
last 7 days
116
last 30 days
35 before24 after
this quake
Strongest of the sequence3.1

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: 2827 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.

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

1.2
2 km South-West of Tripi
10 km South · 10 km
130 months ago
16 Oct, 00:02
1.0
3 km West of Milazzo
15 km North-East · 11 km
130 months ago
17 Oct, 04:55
1.4
1 km North of Rodì Milici
8 km South-East · 8 km
130 months ago
13 Oct, 22:16
1.5
130 months ago
13 Oct, 15:23
1.1
130 months ago
13 Oct, 04:32
3.1
2 km West of Merì
12 km East · 10 km
130 months ago
13 Oct, 04:25
0.9
130 months ago
13 Oct, 04:24
1.3
1 km North of Ucria
22 km West · 11 km
130 months ago
18 Oct, 01:17
1.6
130 months ago
12 Oct, 02:40
1.1
13 km North of Patti
15 km North-West · 10 km
130 months ago
19 Oct, 20:02

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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