Reviewed by USGSGreece22y ago
M3.4 earthquake 0 km SSE of Filiatrá, Greece
Monday, May 31, 2004, 07:24:31 UTC · 37.150°N, 21.590°E
A magnitude 3.4 earthquake struck 0 km SSE of Filiatrá, Greece on Monday, May 31, 2004, 07:24:31 UTC, at a depth of 4.0 km (shallow).
- Magnitude
- 3.4
- Minor · md
- Depth
- 4 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- —
- No ShakeMap
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquakeDashed circle: 50 km aftershock search area
In context
How big was it, and why here?
Energy released
2 tons of TNT
That is about 1/7,931 of the Hiroshima bomb. A magnitude 5.0 releases about 251 times more energy.
Tectonic setting
57 km
from the nearest mapped plate boundary, between the Aegean Sea and African plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
4 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 50 km
USGS lists 5 M2.5+ earthquakes within 50 km in the following 30 days; the largest was M3.4 on June 5, 2004. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
- 3.215 km WNW of Filiatrá, Greece22y ago · 16 km NW of this epicenter
- 3.28 km SSW of Gargaliánoi, Greece22y ago · 17 km S of this epicenter
- 3.15 km SSW of Kyparissía, Greece22y ago · 8 km NE of this epicenter
- 3.45 km NNW of Chóra, Greece22y ago · 10 km SE of this epicenter
- 3.23 km SSE of Messíni, Greece22y ago · 41 km E of this epicenter
Regional history
Past M5+ earthquakes within 300 km
USGS lists 466 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.9Southern GreeceAugust 11, 1903 · 179 km SE of this epicenter
- 7.34 km WNW of Koróni, GreeceOctober 6, 1947 · 48 km SE of this epicenter
- 7.026 km SW of Lixoúri, GreeceJanuary 17, 1983 · 155 km NW of this epicenter
- 6.815 km ENE of Póros, GreeceAugust 12, 1953 · 128 km NW of this epicenter
- 6.86 km SW of Galaxídhion, GreeceMarch 31, 1965 · 147 km NE of this epicenter
- 6.7Ionian SeaNovember 15, 1959 · 119 km NW of this epicenter
- 6.75 km SW of Domvraína, GreeceFebruary 24, 1981 · 168 km NE of this epicenter
- 6.77 km NE of Anávra, GreeceApril 30, 1954 · 236 km N of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 136 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 5,342 recorded deaths. The most severe:
- 1750
Morea,Cerigo
7 Jun 1750 · 164 km away · intensity X
2,000 deaths
- 1953M7.2
Lixouri-Argostoli (Kephallenia)
12 Aug 1953 · 146 km away · intensity X
476 deaths$100 million damagetsunami
- 1820M6.9
Zakinthos (Zante)
29 Dec 1820 · 73 km away · intensity X
388 deathsSevere damage ($5–24M)tsunami
- 1886M6.8
Triphylie (Peleponese), Philiatra
27 Aug 1886 · 11 km away · intensity X
326 deathsSevere damage ($5–24M)tsunami
- 1767M6.7
Kefalonia
11 Jul 1767 · 159 km away · intensity X
303 deathsSevere damage ($5–24M)
- 1894M6.7
Locride, Malesina-Martinon (Lokris)
20 Apr 1894 · 214 km away · intensity X
255 deathsSevere damage ($5–24M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.