Reviewed by USGSGreece23y ago
M4.0 earthquake 82 km SW of Lithakiá, Greece
Friday, January 9, 2004, 04:49:09 UTC · 37.170°N, 20.200°E
A magnitude 4.0 earthquake struck 82 km SW of Lithakiá, Greece on Friday, January 9, 2004, 04:49:09 UTC, at a depth of 5.0 km (shallow).
- Magnitude
- 4.0
- Light · ml
- Depth
- 5 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
15 tons of TNT
That is about 1/998 of the Hiroshima bomb. A magnitude 5.0 releases about 32 times more energy.
Tectonic setting
40 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
5 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 1 M2.5+ earthquake within 50 km in the following 30 days; the largest was M3.4 on February 3, 2004. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 378 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 7.9Southern GreeceAugust 11, 1903 · 282 km SE of this epicenter
- 7.34 km WNW of Koróni, GreeceOctober 6, 1947 · 158 km E of this epicenter
- 7.026 km SW of Lixoúri, GreeceJanuary 17, 1983 · 95 km N of this epicenter
- 6.815 km ENE of Póros, GreeceAugust 12, 1953 · 130 km NE of this epicenter
- 6.86 km SW of Galaxídhion, GreeceMarch 31, 1965 · 228 km NE of this epicenter
- 6.7Ionian SeaNovember 15, 1959 · 82 km NE of this epicenter
- 6.75 km SW of Domvraína, GreeceFebruary 24, 1981 · 267 km NE of this epicenter
- 6.77 km NE of Anávra, GreeceApril 30, 1954 · 286 km NE of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 121 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 4,973 recorded deaths. The most severe:
- 1750
Morea,Cerigo
7 Jun 1750 · 272 km away · intensity X
2,000 deaths
- 1953M7.2
Lixouri-Argostoli (Kephallenia)
12 Aug 1953 · 136 km away · intensity X
476 deaths$100 million damagetsunami
- 1820M6.9
Zakinthos (Zante)
29 Dec 1820 · 113 km away · intensity X
388 deathsSevere damage ($5–24M)tsunami
- 1886M6.8
Triphylie (Peleponese), Philiatra
27 Aug 1886 · 133 km away · intensity X
326 deathsSevere damage ($5–24M)tsunami
- 1767M6.7
Kefalonia
11 Jul 1767 · 124 km away · intensity X
303 deathsSevere damage ($5–24M)
- 1867M7.2
Cephalonia
4 Feb 1867 · 120 km away · intensity X
223 deathsSevere damage ($5–24M)tsunami
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.