October 5, 1948 Earthquake: Ashkhabad, Turkmenistan
A magnitude 7.2 earthquake struck Ashkhabad, Turkmenistan on October 5, 1948 at 20:12:09 UTC, 18 km below the surface. It killed 110,000 people.
Map
Where it struck, with the other significant earthquakes within 200 km. Circles are sized and colored by magnitude; select one for its page.
The earthquake
- Date
- October 5, 1948
- Time
- 20:12:09 UTC
- Place
- Ashkhabad, Turkmenistan
- Magnitude
- 7.2 (Mw)
- Magnitude scales
- Mw 7.2 · Ms 7.3
- Focal depth
- 18 km (11 mi)
- Intensity
- X, extreme shaking, on the Modified Mercalli scale
- Tsunami
- None recorded
- Epicenter
- 38.084° N, 58.364° E
- Country
- Turkmenistan
- Region
- Central Asia and Caucasus
- USGS record
- The USGS’s page for this earthquake
Mw: moment magnitude, based on the slip on the fault and the area that slipped. Ms: surface-wave magnitude. NCEI’s headline magnitude is the best of these for the earthquake.
The toll
- Deaths
- 110,000
- Injuries
- Very many (over 1,000)
- Damage
- $25 million
- Houses destroyed
- Very many (over 1,000)
Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.
From Wikipedia
The 1948 Ashgabat earthquake was on 6 October with a surface-wave magnitude of 7.3 and a maximum Mercalli intensity of X (Extreme), in Turkmenistan near Ashgabat. Due to censorship by the Soviet government, the event was not widely reported in the Soviet media. Historians tend to agree that the ban on reporting the extent of the casualties and damage did not allow the Soviet government to allocate enough financial resources to respond adequately. It was the strongest earthquake recorded in Turkmenistan.
Text from Wikipedia, “1948 Ashgabat earthquake”, licensed CC BY-SA 4.0. Quoted as written; the full article has the rest.
What the record says
NCEI’s account, from the sources it cites.
1948 Oct 5, 20:12:07 UTC. 37.95N, 58.32E, depth 18 km, 7.3 MS, intensity IX-X.
"...The Ashkhabad earthquake of 1948 was one of the major seismic events of recent years.... Buildings made of raw brick were destroyed, and almost all collapsed. There was also major damage to the ferro-concrete support framework of the buildings. In the area of Ashkhabad, horizontal deformations in the ground appeared in the form of fissures and gaps... Their width was measured as 1 or several centimeters... In the northern end of Komsomol Street...the width of the cracks reached 0.1 m. Water pipes ruptured in this area.
Tens of thousands of people were killed and injured in this earthquake. All the private and public buildings in many of the villages around the city were destroyed, and most of them collapsed. The intensity of the earthquake in the villages of Kara-Tokmak, Kuru-Gaudan, Annau, Kurtli, and others is estimated not less than 9.
In Kuru-Gaudan, 25 km southeast of Ashkhabad, ..."more than 10 new springs appeared. ... The water level in the wells increased 2 m. A spring to the west of the village quintupled its output.... In the eastern part of the village the water pipes burst; pipes swelled in several places owing to the compression of the ground... Displacements of 90 cm in depth occurred on the tops of hills, on watersheds, and on the peak areas of slopes. Fissures measured up to 60 cm in width". "The fissures extended hundreds of meters in length."
Ye. M. Butovskaya writes about the destruction in Kuru-Gaudan: "The rupture and thrust of one part of a pipeline onto another over a length of 3 m were not uncommon. Waterlines swelled to a height of 1 m; roofs here flung farm cattle sheds to a distance of several meters in a northeast-southwest direction; ... monolith brick columns were sheared in 70 x 80 cm sections."
Many reports describe the falling of heavy commodity trains, which were thrown from the railroad tracks in the Ashkhabad region and the Annau station, and some give a detailed engineering analysis of the falling of monuments and brick columns, and the tilting of a large iron-concrete elevator.
Sump volcanoes formed 4-5 km north-northwest of Ashkhabad and in the Kuru-Gaudan region.
Surface fissures also formed in the opposite direction of Kuru-Gaudan, 27 km northwest of Ashkhabad. Therefore the surface of the rupture, partially seen on the surface extended no less than 70 km.
Much destruction occurred in the region of the Iranian cities of Deregez, Khakester, and Kelat. More than 30 villages in this region were reduced to piles of debris under which many people lost their lives. There was a multitude of surface fissures of diverse direction and width. The force of the earthquake at its epicenter is rated at intensity 9-10.
(above ref #223)
1948 Oct 5, 20:12:09.31 UTC. 38.084N, 58.364E, 7.15 MW. (ref #10476)
1948 Oct 5, 20:12:05 UTC. 37.5N, 58E, shallow depth, 7.3 MS. (ref #88)
1948 Oct 5, 20;12:05 UTC. 37.5N, 58E, 7.3 MS. (ref #130 and 1092)
1948 Oct 5, 20:12 UTC. 37.9N, 58.6E, 7.2 MS. Ashkhabad, 19,800 deaths. (ref #1138)
1948 Oct 5, 20:12 UTC. 7.2 MS, Ashkhabad, 10,000 deaths. (ref #3937)
1948 Oct 5. Ashkhabad, 19,800 deaths. (ref #1051)
1948 Oct 5. 110,000 deaths, $25 million damage. (ref #1250)
1948 Oct 5. 176,000 deaths in USSR, 352 in Iran. (ref #12864)
1948 Oct 5. Extreme damage in Ashgabat (Ashkhabad) and nearby villages, where almost all brick buildings collapsed, concrete structures were heavily damaged and freight trains were derailed. Damage and casualties also occurred in the Darreh Gaz area, Iran. Surface rupture was observed both northwest and southeast of Ashgabat. Many sources list the casualty total at 10,000, but a news release on 9 Dec 1988 advised that the correct death toll was 110,000. (ref #10015)
Sources NCEI cites
The publications NCEI lists for this record. The numbers match the “reference #” notes in its account above.
- #1138 Ambraseys, N.N. (1978). Middle East: A reappraisal of seismicity. Quarterly Journal Engineering Geology, vol. II, 1978, p. 19-32.
- #10476 International Seismological Centre (2013). Final Scientific Report of the ISC-GEM Instrumental Earthquake Catalogue, ISC-GEM Global Instrumental earthquake Catalogue (1900-2021). Versions 1-12 downloaded beginning 18 March 2013. DOI: 10.31905/D808B825
- #10015 U.S. Geological Survey (2012). Earthquakes with 50,000 or More Deaths. November 01, 2012. Retrieved from Link
- #12864 Berberian, Manuel (2005). The 2003 Bam urban earthquake: a predictable seismotectonic pattern along the western margin of the rigid Lut block, southeast Iran. Earthquake Spectra, 21(1_suppl), 35-99.
- #1051 Munchener Ruckversicherungs-Gesellschaft (1998). World Map of Natural Hazards, Munich Federal Republic of Germany
- #223 Kondorskaya, N.V., and N.V. Shebalin, editors (1982). New catalog of strong earthquakes in the U.S.S.R. from ancient times through 1977. Report SE-31, World Data Center A for Solid Earth Geophysics, NOAA, National Geophysical Data Center, Boulder, Colorado, USA, 608 p.
- #1192 Berberian, Manuel (1977). Geological Survey of Iran, Tectonic and Seismotectonic Research Section, Report no. 40, Contribution to the Seismotectonics of Iran (Part III), Ministry of Industry and Mines, Tehran, Iran.
- #1191 Berberian, Manuel (1976). Geological Survey of Iran, Tectonic and Seismotectonic Research Section, Report no. 39, Contribution to the Seismotectonics of Iran (Part II), Ministry of Industry and Mines, Tehran, Iran, 516 p.
- #1092 Abe, Katsuyuki (1981). Magnitudes of Large Shallow Earthquakes from 1904 to 1980. Physics of the Earth and Planetary Interiors, vol. 27, 1981, p. 72-92. DOI:10.1016/0031-9201(81)90088-1
- #3937 Berberian, Manuel (1996). The Historical Record of Earthquakes in Persia. Encyclopaedia Iranica, VII (F.6), Drugs-Ebn al-Atir, Mazda Publishers, Costa Mesa, California, p. 635-640.
- #88 Duda, Seweryn J. (1965). Secular seismic energy release in the circum-Pacific belt. Tectonophysics, vol. 2, no. 5, p. 409-452. DOI:10.1016/0040-1951(65)90035-1
- #130 Gutenberg, B. and C.F. Richter (1965). Seismicity of the earth and associated phenomena. Princeton University Press, 1954 (second edition); Hafner Publishing Company, New York and London (facsimile edition), 310 p.
Other significant earthquakes nearby
Within 200 km, the deadliest first.
- November 17, 1893, Quchan, Mashhad, Bojnurd, Iran
- November 18, 1667, Shirvan, Shamkha, Iran
- August 20, 943, Nisa, Turkmenistan
- January 6, 1872, Quchan, Iran
- May 1, 1929, Kopet-Dagh, Iran
- December 23, 1871, Quchan, Iran
- February 22, 1852, Khabushan (NW Kuchan), Iran
- January 17, 1895, Quchan, Iran
- April 2, 1879, Bojnurd, Iran
- September 17, 1923, Bodzhnurd, Qaleh Jaq Kmen, Iran
- February 4, 1997, Bojnurd, Shirvan, Esfarayen, Iran
- January 3, 1969, NE Khurasan Province, Iran
- August 21, 1928, Shirvan, Iran
- July 13, 1929, Faruj, Iran
- March 31, 1963, Hendojan, Iran
More
Significant earthquakes of 1948The 1900sEvery quake the USGS located in 1948Recent earthquakes near hereThis day in weather history
Sources
Significant earthquakes from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-10-01. NCEI earthquake 3891. The written accounts and the magnitude estimates are from the USGS earthquake catalog, event iscgem897583, matched to this record by time, place and magnitude.