Reviewed by USGSItaly109y ago
M5.6 earthquake 34 km NE of Scardovari, Italy
Wednesday, November 6, 1918, 19:26:05 UTC · 45.093°N, 12.794°E
A magnitude 5.6 earthquake struck 34 km NE of Scardovari, Italy on Wednesday, November 6, 1918, 19:26:05 UTC, at a depth of 15.0 km (shallow). It is the strongest earthquake within 300 km since an M5.7 on April 26, 1917.
- Magnitude
- 5.6
- Moderate · mw
- Depth
- 15 km
- Shallow
- 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
3 kilotons of TNT
That is about 1/5 of the Hiroshima bomb. It released about 7 times the energy of a magnitude 5.0.
Tectonic setting
675 km
from the nearest mapped plate boundary, between the Eurasian and African plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
15 km
Shallow earthquakes (under 70 km) produce the strongest surface shaking for their size, so they are the ones most likely to cause damage near the epicenter.
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 75 km
USGS has not published any M2.5+ earthquake within 75 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 26 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 6.019 km NNE of Gabicce Mare, ItalyMay 17, 1916 · 107 km S of this epicenter
- 6.015 km NNE of Pesaro, ItalyAugust 16, 1916 · 119 km S of this epicenter
- 6.07 km ESE of Pokupsko, CroatiaOctober 8, 1909 · 261 km E of this epicenter
- 5.97 km NE of Novi Vinodolski, CroatiaMarch 12, 1916 · 163 km E of this epicenter
- 5.84 km WNW of Sunja, CroatiaJanuary 2, 1906 · 294 km E of this epicenter
- 5.83 km N of Rude, CroatiaJanuary 29, 1917 · 238 km E of this epicenter
- 5.815 km WNW of Perušić, CroatiaJuly 14, 1916 · 195 km E of this epicenter
- 5.76 km SW of Monterchi, ItalyApril 26, 1917 · 192 km S of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 52 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 51,145 recorded deaths. The most severe:
- 1703
Central Apennino, Norcia, L'Aquila, Perugia
14 Jan 1703 · 258 km away · intensity XI
40,000 deathsExtreme damage ($25M+)
- 1703M6.7
L'Aquila (Aquila)
2 Feb 1703 · 294 km away · intensity XI
10,000 deathsSevere damage ($5–24M)tsunami
- 1789
Citta Di Castello,Sansepolcro
30 Sep 1789 · 183 km away · intensity X
500 deathsSevere damage ($5–24M)
- 1730
Norcia
12 May 1730 · 256 km away · intensity X
200 deathsSevere damage ($5–24M)
- 1768
Santa Sofia
19 Oct 1768 · 137 km away · intensity X
120 deathsSevere damage ($5–24M)
- 1859
Italy
22 Aug 1859 · 256 km away · intensity XI
100 deathsModerate damage ($1–5M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.