Reviewed by USGSIran110y ago
M5.5 earthquake 19 km NE of Pādegān-e Manjīl, Iran
Saturday, June 2, 1917, 00:28:04 UTC · 36.874°N, 49.554°E
A magnitude 5.5 earthquake struck 19 km NE of Pādegān-e Manjīl, Iran on Saturday, June 2, 1917, 00:28:04 UTC, at a depth of 15.0 km (shallow). It is the strongest earthquake within 300 km since an M7.3 on January 23, 1909.
- Magnitude
- 5.5
- 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
2 kilotons of TNT
That is about 1/6 of the Hiroshima bomb. It released about 5 times the energy of a magnitude 5.0.
Tectonic setting
459 km
from the nearest mapped plate boundary, between the Eurasian and Arabian 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 1 M5.0+ earthquake within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 16 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 59,300 recorded deaths. The most severe:
- 1721M7.7
Tabriz
26 Apr 1721 · 277 km away
40,000 deathsExtreme damage ($25M+)
- 1779M6.5
Tabriz
27 Dec 1779 · 281 km away · intensity VII
10,000 deathsSevere damage ($5–24M)
- 1909M7.3
Silakor
23 Jan 1909 · 296 km away · intensity IX
5,500 deathsModerate damage ($1–5M)
- 1879M6.7
Bozqush, Ardabil, Gamrud, Tark, Manan
22 Mar 1879 · 179 km away · intensity IX
2,000 deathsSevere damage ($5–24M)
- 1830
Damavand,Tehran,Semnan,Damghan
9 May 1830 · 263 km away
500 deathsSevere damage ($5–24M)
- 1863
Nir,Ardabil
Dec 1863 · 213 km away
500 deathsSevere damage ($5–24M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.