Reviewed by USGSItaly117y ago
M6.5 earthquake 72 km WSW of Cittadella del Capo, Italy
Monday, August 1, 1910, 10:40:26 UTC · 39.361°N, 15.068°E
A magnitude 6.5 earthquake struck 72 km WSW of Cittadella del Capo, Italy on Monday, August 1, 1910, 10:40:26 UTC, at a depth of 260.0 km (intermediate). It is the strongest earthquake within 300 km since an M7.1 on December 28, 1908.
- Magnitude
- 6.5
- Strong · ms
- Depth
- 260 km
- Intermediate
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- —
- No ShakeMap
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquake
In context
How big was it, and why here?
Energy released
85 kilotons of TNT
That is about 6 times the Hiroshima bomb. It released about 178 times the energy of a magnitude 5.0.
Tectonic setting
81 km
from the nearest mapped plate boundary, between the Eurasian and African plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: intermediate
260 km
Intermediate-depth earthquakes usually break inside a plate that is sinking into the mantle. Shaking spreads over a wide area but is gentler at the epicenter than a shallow quake of the same size.
Did You Feel It?
Where it was felt
No “Did You Feel It?” reports have been published for this event yet. If you felt it, you can add your report on the USGS website.
I felt it — report to USGS ↗USGS PAGER estimate
Who was exposed to shaking
USGS publishes PAGER impact estimates for significant earthquakes, usually within an hour. No PAGER estimate is available for this event.
After the main event
Aftershocks within 100 km
USGS has not published any M2.5+ earthquake within 100 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 5 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.25 km W of San Nicolò, ItalySeptember 8, 1905 · 102 km SE of this epicenter
- 7.1The 1908 Messina, Italy Earthquake and TsunamiDecember 28, 1908 · 159 km S of this epicenter
- 5.91 km ENE of Cairano, ItalyJune 7, 1910 · 173 km N of this epicenter
- 5.95 km NW of Africo Vecchio, ItalyOctober 23, 1907 · 159 km SE of this epicenter
- 5.23 km WSW of Paduli, ItalyNovember 26, 1905 · 201 km N of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 64 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 159,652 recorded deaths. The most severe:
- 1908M7.0
Messina, Sicily, Calabria
28 Dec 1908 · 140 km away · intensity XI
80,000 deaths$116 million damagetsunami
- 1783M6.9
Tyrrhenian Calabria
5 Feb 1783 · 141 km away · intensity XI
30,000 deathsExtreme damage ($25M+)tsunami
- 1857M6.5
Campania, Potenza
16 Dec 1857 · 131 km away · intensity X
10,000 deathsExtreme damage ($25M+)
- 1757
Siracusa (Syracuse)
6 Aug 1757 · 263 km away · intensity IX
10,000 deathsSevere damage ($5–24M)
- 1857
Calabria,Montemurro
16 Sep 1857 · 115 km away
10,000 deathsSevere damage ($5–24M)
- 1805
Molise, Rosolone, Napoli (Naples), Isernia
26 Jul 1805 · 207 km away · intensity XI
5,600 deathsExtreme damage ($25M+)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.