All earthquakes
1.4
very light
EARTHQUAKE DETAILS

M1.4 earthquake · 3 km South-West of Cardè (CN)

2 years ago · 22 Sept 2024, 07:35

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

Stronger than 63% of Italian events in the past year

Where

3 km South-West of CardèEarthquakes in the province of CuneoEarthquakes in Piemonte

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

7 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 ≈ 20 s

Animation sped up ~4× compared to reality.

  • Moncalieri
    34 km from the epicentre
    first tremor in ~7 s
    main shaking in ~12 s
  • Cuneo
    35 km from the epicentre
    first tremor in ~7 s
    main shaking in ~13 s
  • Torino
    46 km from the epicentre
    first tremor in ~9 s
    main shaking in ~15 s
  • Asti
    63 km from the epicentre
    first tremor in ~12 s
    main shaking in ~20 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

27 km
medium depth
3 times the height of Mount Everest

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

deeper than the area average (~12 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 (M1.6, 2 years ago) in the same area. Aftershocks are normal after an earthquake and tend to fade over time.

1.6
The mainshock
1 km South-East of Murello
2 years ago · 10 Sept 2024, 08:15
Activity in the area right now (30 km radius)
0
last 24 hours
1
last 7 days
18
last 30 days
5 before1 after
this quake
Strongest of the sequence1.6

How often does it happen here?

about every ~23 days

Within 50 km of this epicentre, a magnitude ≥ 2 earthquake has occurred on average this often: 191 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.

18085.6
Val Pellice earthquake
2 April 1808 · 21 km from here
VIIIRuinous: partial collapses in ordinary buildings, widespread heavy damage.
18085.3
Val Pellice earthquake
16 April 1808 · 18 km from here
VIIVery strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
19145.2
Torinese earthquake
26 October 1914 · 37 km from here
VIIVery strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
18865.2
Torinese earthquake
5 September 1886 · 37 km from here
VIIVery strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.

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

The closest seismic structure

Southern Piemonte

The epicentre lies about 7 km from Southern Piemonte, one of the seismic structures mapped by INGV geologists.

estimated maximum magnitude 6.3between 2 and 8 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

1.3
1 km North-East of Busca
22 km South · 17 km
2 years ago
18 Sept 2024, 07:05
1.5
4 km North-East of Sampeyre
22 km South-West · 12 km
2 years ago
16 Sept 2024, 10:38
0.8
2 years ago
16 Sept 2024, 01:49
1.6
1 km South-East of Murello
12 km East · 38 km
2 years ago
10 Sept 2024, 08:15
1.3
5 km West of Sanfront
20 km South-West · 12 km
1 year ago
13 Oct 2024, 08:52
1.3
3 km South-East of Sampeyre
26 km South-West · 10 km
2 years ago
28 Aug 2024, 05:48

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).