Reviewed by USGSTurkey76y ago
M7.0 earthquake 14 km S of Eflani, Turkey
Monday, August 13, 1951, 18:33:38 UTC · 41.289°N, 32.960°E
A magnitude 7.0 earthquake struck 14 km S of Eflani, Turkey on Monday, August 13, 1951, 18:33:38 UTC, at a depth of 25.0 km (shallow). It is the strongest earthquake within 300 km since an M7.6 on February 1, 1944.
- Magnitude
- 7.0
- Strong · mw
- Depth
- 25 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- VII
- Very strong (ShakeMap)
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquakeDashed circle: 100 km aftershock search areaColoured lines: estimated shaking intensity (USGS ShakeMap)
In context
How big was it, and why here?
Energy released
415 kilotons of TNT
That is about 28 times the Hiroshima bomb. It released about 871 times the energy of a magnitude 5.0.
Tectonic setting
37 km
from the nearest mapped plate boundary, between the Anatolian and Eurasian plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
25 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 100 km
USGS lists 1 M2.5+ earthquake within 100 km in the following 30 days; the largest was M5.4 on August 14, 1951. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 58 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.610 km WNW of Orta, TurkeyFebruary 1, 1944 · 70 km S of this epicenter
- 7.56 km SSE of Ilgaz, TurkeyNovember 26, 1943 · 75 km SE of this epicenter
- 6.626 km NE of Kaman, TurkeyApril 19, 1938 · 210 km SE of this epicenter
- 6.515 km ENE of İskilip, TurkeyJune 25, 1910 · 150 km E of this epicenter
- 6.4TurkeyJune 20, 1943 · 223 km W of this epicenter
- 6.215 km N of Saraykent, TurkeyJuly 30, 1940 · 267 km SE of this epicenter
- 6.17 km S of Daday, TurkeyOctober 26, 1945 · 45 km E of this epicenter
- 6.125 km ESE of Safranbolu, TurkeyJune 9, 1919 · 13 km S of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 15 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 7,916 recorded deaths. The most severe:
- 1943M7.5
Ladik, Samsun, Havza
26 Nov 1943 · 75 km away · intensity XI
4,020 deathsExtreme damage ($25M+)
- 1944M7.6
Turkey
1 Feb 1944 · 70 km away · intensity X
2,381 deathsSevere damage ($5–24M)
- 1866M7.2
Goynuk
12 May 1866 · 208 km away · intensity IX
675 deathsSevere damage ($5–24M)
- 1943M6.4
Hendek, Adapazari
20 Jun 1943 · 223 km away · intensity X
285 deathsSevere damage ($5–24M)
- 1938M6.6
Kirsehir
19 Apr 1938 · 210 km away · intensity X
224 deathsSevere damage ($5–24M)
- 1844
Osmancik, Ankara
12 May 1844 · 158 km away · intensity IX
200 deathsSevere damage ($5–24M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.