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2.9
light
EARTHQUAKE DETAILS

16 km South of Bova Marina

139 months ago · 25 Jan, 19:54

A light earthquake, rarely felt by people. Being deep, it is felt less at the surface.

Stronger than 98% of Italian events in the past year

Where

16 km South of Bova MarinaEarthquakes in the province of Reggio CalabriaEarthquakes in Calabria

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

6 events
Magnitude:lightweakmoderatestrong

The energy released

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

338kgof TNT equivalent
1.4 lightning bolts
M3
A magnitude 3 earthquake releases ×1.4 its energy
M2this quakeM4

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 ≈ 28 s

Animation sped up ~5× compared to reality.

  • Reggio di Calabria
    38 km from the epicentre
    first tremor in ~10 s
    main shaking in ~17 s
  • Messina
    57 km from the epicentre
    first tremor in ~12 s
    main shaking in ~21 s
  • Acireale
    71 km from the epicentre
    first tremor in ~14 s
    main shaking in ~24 s
  • Catania
    87 km from the epicentre
    first tremor in ~16 s
    main shaking in ~28 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

45 km
deep
5.1 times the height of Mount Everest

Being deep, it is felt less at the surface.

deeper than the area average (~18 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?

Isolated quake

In the 30 days around this event no other quakes were recorded within 30 km: a one-off episode, very common in Italy.

Activity in the area right now (30 km radius)
0
last 24 hours
0
last 7 days
3
last 30 days
3 before2 after
this quake
Strongest of the sequence2.4

How often does it happen here?

about every ~28 days

Within 50 km of this epicentre, a magnitude ≥ 2.5 earthquake has occurred on average this often: 150 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.

19087.1
Stretto di Messina earthquake
28 December 1908 · 44 km from here
XICatastrophic: very few buildings remain standing; landslides and ground cracks.
19076.0
Aspromonte earthquake
23 October 1907 · 32 km from here
IXDestructive: many buildings partly or fully collapse.
15095.6
Stretto di Messina earthquake
25 February 1509 · 39 km from here
IXDestructive: many buildings partly or fully collapse.
19095.5
Stretto di Messina earthquake
1 July 1909 · 48 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

Aspromonte-Peloritani

The epicentre lies about 31 km from Aspromonte-Peloritani, one of the seismic structures mapped by INGV geologists.

estimated maximum magnitude 7.3between 2 and 13 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

2.4
21 km South of Brancaleone
18 km East · 43 km
139 months ago
16 Jan, 15:03
1.7
139 months ago
10 Jan, 22:25
1.9
139 months ago
7 Jan, 21:00
1.5
138 months ago
13 Feb, 03:59
2.2
138 months ago
14 Feb, 06:31

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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