Reviewed by USGSItaly91y ago
M5.8 earthquake 4 km NNW of Polcenigo, Italy
Sunday, October 18, 1936, 03:10:07 UTC · 46.080°N, 12.487°E
A magnitude 5.8 earthquake struck 4 km NNW of Polcenigo, Italy on Sunday, October 18, 1936, 03:10:07 UTC, at a depth of 10.0 km (shallow). It is the strongest earthquake within 300 km since an M6.0 on October 30, 1930.
- Magnitude
- 5.8
- Moderate · mw
- Depth
- 10 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
7 kilotons of TNT
That is about 1/2 of the Hiroshima bomb. It released about 15 times the energy of a magnitude 5.0.
Tectonic setting
669 km
from the nearest mapped plate boundary, between the North American and Pacific plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
10 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 51 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 6.32 km SW of Molazzana, ItalySeptember 7, 1920 · 278 km SW of this epicenter
- 6.21 km NNW of Vicchio, ItalyJune 29, 1919 · 250 km S of this epicenter
- 6.019 km NNE of Gabicce Mare, ItalyMay 17, 1916 · 219 km S of this epicenter
- 6.015 km NNE of Pesaro, ItalyAugust 16, 1916 · 231 km S of this epicenter
- 6.028 km NNE of Montignano-Marzocca, ItalyOctober 30, 1930 · 256 km S of this epicenter
- 6.04 km SE of Zuglio, ItalyMarch 27, 1928 · 59 km NE of this epicenter
- 6.07 km ESE of Pokupsko, CroatiaOctober 8, 1909 · 288 km E of this epicenter
- 5.97 km NE of Novi Vinodolski, CroatiaMarch 12, 1916 · 211 km SE of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 54 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 2,110 recorded deaths. The most severe:
- 1920M5.8
Carrara,Garfagnana
7 Sep 1920 · 262 km away · intensity X
1,400 deaths
- 1789
Citta Di Castello,Sansepolcro
30 Sep 1789 · 288 km away · intensity X
500 deathsSevere damage ($5–24M)
- 1768
Santa Sofia
19 Oct 1768 · 234 km away · intensity X
120 deathsSevere damage ($5–24M)
- 1873
Bellunese
29 Jun 1873 · 15 km away · intensity X
55 deathsModerate damage ($1–5M)
- 1930M6.0
Senigallia
30 Oct 1930 · 256 km away · intensity IX
18 deathsSevere damage ($5–24M)tsunami
- 1895M6.1
Slovenia: Ljubljana
14 Apr 1895 · 155 km away · intensity IX
7 deathsSevere damage ($5–24M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.