Reviewed by USGSGreece95y ago
M6.3 earthquake 5 km SSW of Askós, Greece
Thursday, September 29, 1932, 03:57:23 UTC · 40.704°N, 23.373°E
A magnitude 6.3 earthquake struck 5 km SSW of Askós, Greece on Thursday, September 29, 1932, 03:57:23 UTC, at a depth of 10.0 km (shallow). It is the strongest earthquake within 300 km since an M6.9 on September 26, 1932.
- Magnitude
- 6.3
- Strong · mw
- Depth
- 10 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 earthquakeColoured lines: estimated shaking intensity (USGS ShakeMap)
In context
How big was it, and why here?
Energy released
47 kilotons of TNT
That is about 3 times the Hiroshima bomb. It released about 99 times the energy of a magnitude 5.0.
Tectonic setting
102 km
from the nearest mapped plate boundary, between the Aegean Sea and Eurasian plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
10 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 has not published any M2.5+ earthquake within 100 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 88 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.2Aegean SeaNovember 8, 1905 · 126 km SE of this epicenter
- 7.19 km S of Stara Zagora, BulgariaApril 14, 1928 · 263 km NE of this epicenter
- 7.13 km W of Brezovo, BulgariaApril 18, 1928 · 230 km NE of this epicenter
- 7.07 km SE of Stara Kresna, BulgariaApril 4, 1904 · 118 km N of this epicenter
- 6.97 km NNE of Ágios Nikólaos, GreeceSeptember 26, 1932 · 54 km SE of this epicenter
- 6.86 km W of Stara Kresna, BulgariaApril 4, 1904 · 124 km N of this epicenter
- 6.73 km SW of Kuklis, North MacedoniaMarch 8, 1931 · 97 km NW of this epicenter
- 6.617 km NNW of Bilisht, AlbaniaFebruary 18, 1911 · 209 km W of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 64 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 1,342 recorded deaths. The most severe:
- 1894M6.7
Locride, Malesina-Martinon (Lokris)
20 Apr 1894 · 234 km away · intensity X
255 deathsSevere damage ($5–24M)
- 1920M6.2
Tepelene, Dragoti, Peshtani, Maricaj
26 Nov 1920 · 291 km away · intensity XI
200 deathsSevere damage ($5–24M)
- 1932M6.9
Hierissos-Strantonion (Chalkidiki)
26 Sep 1932 · 50 km away · intensity X
161 deathsExtreme damage ($25M+)tsunami
- 1817M6.6
Achaia: Aeghion
23 Aug 1817 · 289 km away · intensity X
128 deathsSevere damage ($5–24M)tsunami
- 1928M6.8
Chirpan
14 Apr 1928 · 231 km away · intensity X
127 deathsExtreme damage ($25M+)
- 1870M7.5
Greece
30 Sep 1870 · 256 km away
100 deathsSevere damage ($5–24M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.