Significant earthquakes of 1928

March 31, 1928 Earthquake: Tepekoy, Torbali, Turkey

March 31, 1928 · M6.5 · 170 deaths · 2,600 houses destroyed

A magnitude 6.5 earthquake struck Tepekoy, Torbali, Turkey on March 31, 1928 at 00:29:47 UTC. It killed 170 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
March 31, 1928
Time
00:29:47 UTC
Place
Tepekoy, Torbali, Turkey
Magnitude
6.5 (Ms)
Intensity
9 on the Modified Mercalli scale
Epicenter
38.100° N, 27.400° E
Country
Turkey

The toll

Deaths
170
Injuries
700
Damage
Extreme (about $25 million or more)
Houses destroyed
2,600
Houses damaged
Many (101 to 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.

What the record says

NCEI’s account, from the sources it cites.

1928, March 31, 00:30 UTC. 38.1 N, 27.1 E, magnitude 6.5, intensity IX-X, tsunami intensity 2. Aegean Sea, asia Minor, Izmia. An earthquake and weak tsunami 0.5 m high took place. (reference #2130)

1928, March 31, 00:29:47 UTC, 38.1 N, 27.1 E, magnitude 6.5, intensity IX-X. (reference #1004)

1928, March 31. Tepekoy-Torbali. 170 deaths, 700 injuries, 2600 houses destroyed. (reference #1141)

1928, March 30 [31]. 50 or 170 deaths, 209 injuries. (reference #1250)

1928, Marcy 31, 02:29 [local time]. Torbali, intensity IX, magnitude 6.5, 50 deaths, 2500 buildings damaged. (reference #1251)

1928, March 31, 00:29:47 UTC. 38.2 N, 27.5 N, magnitude 6.5. (reference #4095)

1928, March 31, 00:47 UTC. 38.2 N, 27.5 E, magnitude 6.5, intensity IX (Torbali). The earthquake destroyed a number of houses southeast of Smyrne, in the Guma valley and in the plain Koutsouc Menteres, from Gazemir in the north up to CelIat in the south. The village Torbali was completely destroyed. In the country of Smyrne tens of houses were destroyed and hundreds suffered damages. Magnesia, Alasehir (Philadelfia) and Ousac (Temenothyres) were seriously damaged. 30 people were killed. Phenomena of liquefaction and cracks in the ground were observed. It was strongly felt in Chios, moderately in Ikaria and Samos and lightly in Naxos. It was also felt up to the sea of Marmara, Athens and Cythera (AOA, 1932; Sieberg, 1932b; Ambraseys, 1988b). It was followed by aftershocks the largest of which occurred in the same day with the main shock. (reference #4408)

Other significant earthquakes nearby

Within 200 km, the deadliest first.

More

Significant earthquakes of 1928The 1900sEvery quake the USGS located in 1928Recent 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 3353.