September 27, 2003 Earthquake: Kosh-Agach, Ust'-Ulagan, Ongudai, Shebalino, Russia
A magnitude 7.3 earthquake struck Kosh-Agach, Ust'-Ulagan, Ongudai, Shebalino, Russia on September 27, 2003 at 11:33:25 UTC, 16 km below the surface. It killed 3 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
- September 27, 2003
- Time
- 11:33:25 UTC
- Place
- Kosh-Agach, Ust'-Ulagan, Ongudai, Shebalino, Russia
- Magnitude
- 7.3 (Mw)
- Focal depth
- 16 km (10 mi)
- Intensity
- 10 on the Modified Mercalli scale
- Tsunami
- None recorded
- Epicenter
- 50.038° N, 87.813° E
- Country
- Russia
The toll
- Deaths
- 3
- Injuries
- 5
- Damage
- $10.6 million
- Houses destroyed
- 300
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.
What the record says
NCEI’s account, from the sources it cites.
Unconfirmed reports that 3 people died from heart attacks, more than 5 injured, 1,800 homeless, 300 houses destroyed (X), 1,942 buildings damaged and landslides occurred in the Kosh-Agach and Ust-Ulagan area. Significant damage also
reported at Ongudai and Shebalino. Damage estimated at
10.6 million U.S. dollars. Ground subsidence occurred
in the Chaganuzun area which created a flood of the
Chuya River. Felt (VII) at Aktash; (VI) at
Prokop'yevsk and Tashtagol; (IV) at Abakan and
Novosibirsk; (III) Kemerovo, Krasnoyarsk and Zaysan.
Felt throughout southern Siberia. Also felt (IV) at
Semipalatinsk and Ust'-Kamenogorsk; (III) at Almaty,
Astana and Taldyqorghan, Kazakhstan. (above from reference #1053)
Other significant earthquakes nearby
Within 200 km, the deadliest first.
More
Significant earthquakes of 2003The 2000sEvery quake the USGS located in 2003Recent 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 2026-09-24. NCEI earthquake 5725.