Very strong mag. 6.3 earthquake - Ionian Sea, 23 km south of Keri, Nomos Zakýnthou, Ionian Islands, Greece, on Wednesday, 27 August 1958 at 15:16 (GMT)

Very strong mag. 6.3 earthquake - Ionian Sea, 23 km south of Keri, Nomos Zakýnthou, Ionian Islands, Greece, on Wednesday, 27 August 1958 at 15:16 (GMT)

Very strong magnitude 6.3 earthquake at 15 km depth

Date & time: 27 Aug 1958 15:16:36 UTC
Magnitude: 6.3
Depth: 15.0 km
Epicenter latitude / longitude: 37.473°N / 20.716°E (Ionian Sea, Greece)
Nearest volcano: Sousaki (215 km / 134 mi)
Nearby towns and cities:
23 km (14 mi) SSW of Keri (pop: 469) --> See nearby quakes!
38 km (23 mi) SSW of Zakynthos (pop: 11,500) --> See nearby quakes!
40 km (25 mi) S of Katastari (pop: 1,380) --> See nearby quakes!
63 km (39 mi) SW of Gastouni (pop: 8,110) --> See nearby quakes!
67 km (41 mi) WSW of Amaliada (pop: 16,800) --> See nearby quakes!
68 km (42 mi) WSW of Pýrgos (Pirgos) (pop: 22,400) --> See nearby quakes!
81 km (50 mi) SSE of Argostoli (pop: 9,820) --> See nearby quakes!
124 km (77 mi) SW of Patras (pop: 168,000) --> See nearby quakes!
133 km (82 mi) WNW of Kalamata (pop: 54,100) --> See nearby quakes!
271 km (168 mi) WSW of Athens (pop: 664,000) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.8 x 1014 joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 atomic bombs!) More info
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Mag.DepthLocationSource
6.315 kmIonian Sea (Greece)USGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Aftershocks

More info
Recorded aftershocks, latest first (3 quakes):
  • 07 Feb 1959 20:08 UTC
    | M 5.1 |
    15 km (9.3 mi) depth
    |
    22 km (13 mi) distance
    | USGS | Details
  • 02 Sep 1958 01:13 UTC
    | M 5.6 |
    20 km (12.4 mi) depth
    |
    29 km (18 mi) distance
    | USGS | Details
  • 30 Aug 1958 07:35 UTC
    | M 5.3 |
    15 km (9.3 mi) depth
    |
    36 km (22 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

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