All earthquakes
2.0
light
EARTHQUAKE DETAILS

M2.0 earthquake · 3 km South-West of Fuscaldo (CS)

2 years ago · 30 Dec 2023, 04:33

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

Stronger than 88% of Italian events in the past year

Where

3 km South-West of FuscaldoEarthquakes in the province of CosenzaEarthquakes 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

9 events
Magnitude:lightweakmoderatestrong

The energy released

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

15kgof TNT equivalent
Less than the energy of a lightning bolt
M3
A magnitude 3 earthquake releases ×32 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 ≈ 27 s

Animation sped up ~5× compared to reality.

  • Cosenza
    27 km from the epicentre
    first tremor in ~10 s
    main shaking in ~18 s
  • Corigliano-Rossano
    43 km from the epicentre
    first tremor in ~12 s
    main shaking in ~20 s
  • Lamezia Terme
    56 km from the epicentre
    first tremor in ~13 s
    main shaking in ~23 s
  • Catanzaro
    77 km from the epicentre
    first tremor in ~16 s
    main shaking in ~27 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

56 km
deep
6.4 times the height of Mount Everest

Being deep, it is felt less at the surface.

deeper than the area average (~34 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?

Mainshock

It is the strongest quake of its sequence: so far it has been followed by 5 aftershocks within 30 km. Aftershocks tend to fade in number and strength over time.

Activity in the area right now (30 km radius)
0
last 24 hours
1
last 7 days
8
last 30 days
3 before5 after
this quake
Strongest of the sequence2.0

How often does it happen here?

about every ~9 days

Within 50 km of this epicentre, a magnitude ≥ 2 earthquake has occurred on average this often: 494 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.

16387.1
Calabria centrale earthquake
27 March 1638 · 47 km from here
XICatastrophic: very few buildings remain standing; landslides and ground cracks.
11846.8
Valle del Crati earthquake
24 May 1184 · 15 km from here
IXDestructive: many buildings partly or fully collapse.
18546.3
Cosentino earthquake
12 February 1854 · 30 km from here
XCompletely destructive: most buildings are destroyed.
18706.2
Cosentino earthquake
4 October 1870 · 35 km from here
XCompletely destructive: most buildings are destroyed.

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

The closest seismic structure

Crati Valley

The epicentre lies about 17 km from Crati Valley, one of the seismic structures mapped by INGV geologists.

estimated maximum magnitude 6.6between 1 and 10 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
4 km North-East of Paola
7 km East · 24 km
2 years ago
29 Dec 2023, 22:20
0.7
4 km East of Buonvicino
30 km North · 22 km
2 years ago
28 Dec 2023, 17:32
2.0
2 km West of Mendicino
22 km South-East · 28 km
2 years ago
7 Jan 2024, 11:11
1.0
4 km South-West of Tarsia
27 km North-East · 10 km
2 years ago
9 Jan 2024, 07:37
1.2
4 km South-West of Tarsia
27 km North-East · 10 km
2 years ago
9 Jan 2024, 07:41
1.1
0 km South of San Sosti
28 km North · 35 km
2 years ago
19 Dec 2023, 11:23
1.1
2 km North-West of Cervicati
21 km North-East · 10 km
2 years ago
24 Jan 2024, 07:43
0.9
2 years ago
25 Jan 2024, 18:29

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).