QuakeScout
Magnitude3.3

Reviewed by USGSGreece43y ago

M3.3 earthquake 6 km WSW of Antirrio, Greece

Sunday, June 19, 1983, 05:14:22 UTC · 38.301°N, 21.697°E

A magnitude 3.3 earthquake struck 6 km WSW of Antirrio, Greece on Sunday, June 19, 1983, 05:14:22 UTC, at a depth of 10.0 km (shallow).

Magnitude
3.3
Minor · ml
Depth
10 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 earthquake

In context

How big was it, and why here?

Energy released

1 tons of TNT

That is about 1/11,203 of the Hiroshima bomb. A magnitude 5.0 releases about 355 times more energy.

Tectonic setting

12 km

from the nearest mapped plate boundary, between the Aegean Sea and Eurasian plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.

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 50 km

USGS has not published any M2.5+ earthquake within 50 km in the 30 days after this event.

Regional history

Past M5+ earthquakes within 300 km

USGS lists 428 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

  1. 7.9Southern GreeceAugust 11, 1903 · 281 km SE of this epicenter
  2. 7.34 km WNW of Koróni, GreeceOctober 6, 1947 · 167 km S of this epicenter
  3. 7.026 km SW of Lixoúri, GreeceJanuary 17, 1983 · 132 km W of this epicenter
  4. 6.97 km NNE of Ágios Nikólaos, GreeceSeptember 26, 1932 · 284 km NE of this epicenter
  5. 6.815 km ENE of Póros, GreeceAugust 12, 1953 · 67 km W of this epicenter
  6. 6.86 km SW of Galaxídhion, GreeceMarch 31, 1965 · 55 km E of this epicenter
  7. 6.828 km SSE of Karyes, GreeceJanuary 18, 1982 · 295 km NE of this epicenter
  8. 6.7Ionian SeaNovember 15, 1959 · 111 km SW of this epicenter

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 144 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 8,106 recorded deaths. The most severe:

  1. 1851M6.6

    Vlore (Valona),Berat; Turkey

    12 Oct 1851 · 299 km away · intensity XI

    2,000 deathsExtreme damage ($25M+)tsunami

  2. 1750

    Morea,Cerigo

    7 Jun 1750 · 261 km away · intensity X

    2,000 deaths

  3. 1953M7.2

    Lixouri-Argostoli (Kephallenia)

    12 Aug 1953 · 78 km away · intensity X

    476 deaths$100 million damagetsunami

  4. 1851

    Berat

    17 Oct 1851 · 299 km away · intensity X

    400 deathsSevere damage ($5–24M)

  5. 1820M6.9

    Zakinthos (Zante)

    29 Dec 1820 · 73 km away · intensity X

    388 deathsSevere damage ($5–24M)tsunami

  6. 1886M6.8

    Triphylie (Peleponese), Philiatra

    27 Aug 1886 · 134 km away · intensity X

    326 deathsSevere damage ($5–24M)tsunami

NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.

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