Significant earthquakes of 1902

July 5, 1902 Earthquake: Thessaloniki, Greece

July 5, 1902 · M6.5 · 5 deaths · 228 houses destroyed

A magnitude 6.5 earthquake struck Thessaloniki, Greece on July 5, 1902 at 14:56:30 UTC. It killed 5 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
July 5, 1902
Time
14:56:30 UTC
Place
Thessaloniki, Greece
Magnitude
6.5 (Mw)
Magnitude scales
Mw 6.5 · Ms 6.5
Intensity
IX, violent shaking, on the Modified Mercalli scale
Epicenter
40.820° N, 23.040° E
Country
Greece
Region
Southern Europe

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
5
Damage
Moderate (about $1 to $5 million)
Houses destroyed
228

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.

July 5, 1902, 14:32 UTC, 40.75 N, 23.25 E, magnitude 6.5 MS, intensity IX. (reference #1004)

Reference #4408:

July 5, 1902, 14:56:30 UTC, 40.82 N, 23.04 E, magnitude 6.5 Mw, intensity IX.

Foreshocks started three months before. The same day with the mainshock two shocks occurred one in the moming and the other at noon and they warn, somehow, the inhabitants and for this reason there were only 5 victims. This was also due to the fact that the villagers were at their evening works (in the fields) and thus the number of deaths was minimized. The after-shocks lasted till the winter. In Assiros, the damage in the houses, which were made of brick were very large. From the 218 house~, 100 collapsed and the rest became uninhabitable. This is due to the bad construction and to the heavy roofs which collapsed by the violent shock. In the ground, fissures of 4-8m long appeared and in one case the fissure was 100m long and 10 cm wide. In the dried up tributary of the· village dirty water carne out and then was dried up. Mud water appeared in other parts of the shaken area. In the village Arkali (Turkish lands 2 km from Lagada), 10 houses and the Bulgarian church collapsed. However, the house of the Turk landowner, which was better built, suffered very little damage. In these lands, water appeared. In Lagada 40 chimneys collapsed and houses were fissured, while in the next day after the earthquake in the central room of the baths, bores of 0.6m width and 8.5m depth with new hot water appeared. The village Aghios Vasilios suffered serious damage with the collapses of houses and of one church. The villages Laina, Kavalari and Chortiates were less damaged. In Thessaloniki, the shock lasted about 20 sec and the panic put the inhabitant to rout in many cases. The inhabitants stayed ovemight in the open air. The schools and the shops were closed for some days. An extremely large number of houses were fissured. The storehouses and the facilities in the harbour were damaged. However, serious damage, almost terrible, few houses suffered due to their height, to their bad construction and to ground properties. Such are the Serbian school, the Italian hospital, the Turkish bank and the houses in the series of harbour. The earthquake was preceded by underground noise. The building of the railway station of Doiran suffered considerable damage, while the lake of Doiran was clearly vibrated during the earthquake. In Gevgeli, the building of the railway station was also fissured. In Drama, the earthquake was lightly felt. In general, the earthquake was stronger felt in the NW-SE direction. The shock was felt up to Sofia north and up to Athens south (Hoemes, 1902; Critikos, 1932a). Hoemes (1902) cites a map of distribution of damage.

Sources NCEI cites

The publications NCEI lists for this record. The numbers match the “reference #” notes in its account above.

  1. #1004 Karnik, V. (1969). Seismicity of the European Area, Part 1, D. Riedel Publishing Co., Dordrecht, Holland, 1969. 364 p.
  2. #4408 Papazachos, Basil and Catherin Papazachou (1997). The Earthquakes of Greece. P. Ziti & Co., Thessaloniki, Greece, 304 p.

Other significant earthquakes nearby

Within 200 km, the deadliest first.

More

Significant earthquakes of 1902The 1900sEvery quake the USGS located in 1902Recent 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 2623.