8 km East of Barletta
A weak earthquake, felt by some of the population. At this depth the shaking is felt, but rarely causes damage.
Where
8 km East of BarlettaEarthquakes in the province of Barletta-Andria-TraniEarthquakes in PugliaHow far away could it be felt?
An estimate of how far people may have felt this quake.
- up to ~13 km · felt only by some, at rest≈ 150,000 people live in this area
The coloured rings on the map below show these distances.
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
4 eventsThe energy released
How much energy this quake unleashed, translated into everyday comparisons.
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.
Animation sped up ~2× compared to reality.
- Barletta8 km from the epicentrefirst tremor in ~5 smain shaking in ~9 s
- Trani12 km from the epicentrefirst tremor in ~5 smain shaking in ~9 s
- Andria18 km from the epicentrefirst tremor in ~6 smain shaking in ~10 s
- Bisceglie18 km from the epicentrefirst tremor in ~6 smain shaking in ~10 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
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?
It is the strongest quake of its sequence: so far it has been followed by 0 aftershocks within 30 km. Aftershocks tend to fade in number and strength over time.
How often does it happen here?
It is the first magnitude ≥ 3.5 earthquake recorded within 50 km since 2014, the start of our archive.
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.
Source: Parametric Catalogue of Italian Earthquakes CPTI15 (INGV, CC BY 4.0).
The closest seismic structure
The epicentre lies about 1 km from Castelluccio dei Sauri-Trani, one of the seismic structures mapped by INGV geologists.
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
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).