Very strong mag. 6.6 earthquake - Ionian Sea, 70 km west of Pýrgos, Ilia Prefecture, West Greece, on Tuesday, 18 November 1997 at 13:07 (GMT)

Very strong mag. 6.6 earthquake - Ionian Sea, 70 km west of Pýrgos, Ilia Prefecture, West Greece, on Tuesday, 18 November 1997 at 13:07 (GMT)

Very strong magnitude 6.6 earthquake at 33 km depth

1 Jan 00:00 UTC: First to report: USGS after 30 seconds.
Date & time: 18 Nov 1997 13:07:41 UTC
Magnitude: 6.6
Depth: 33.0 km
Epicenter latitude / longitude: 37.57°N / 20.656°E (Ionian Sea, Greece)
Nearest volcano: Sousaki (218 km / 135 mi)
Nearby towns and cities:
17 km (11 mi) SW of Keri (pop: 469) --> See nearby quakes!
30 km (19 mi) SSW of Katastari (pop: 1,380) --> See nearby quakes!
31 km (20 mi) SW of Zakynthos (pop: 11,500) --> See nearby quakes!
61 km (38 mi) WSW of Gastouni (pop: 8,110) --> See nearby quakes!
66 km (41 mi) WSW of Amaliada (pop: 16,800) --> See nearby quakes!
70 km (43 mi) SSE of Argostoli (pop: 9,820) --> See nearby quakes!
70 km (44 mi) W of Pýrgos (Pirgos) (pop: 22,400) --> See nearby quakes!
121 km (75 mi) SW of Patras (pop: 168,000) --> See nearby quakes!
142 km (88 mi) WNW of Kalamata (pop: 54,100) --> See nearby quakes!
274 km (170 mi) W of Athens (pop: 664,000) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5 x 1014 joules (139 gigawatt hours, equivalent to 1.2 x 105 tons of TNT or 7.5 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
6.633 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 (4 quakes):
  • 01 May 1998 04:00 UTC
    | M 5.3 |
    33 km (20.5 mi) depth
    |
    11 km (7 mi) distance
    | USGS | Details
  • 10 Jan 1998 19:21 UTC
    | M 5.5 |
    33 km (20.5 mi) depth
    |
    36 km (22 mi) distance
    | USGS | Details
  • 18 Nov 1997 15:23 UTC
    | M 5.1 |
    33 km (20.5 mi) depth
    |
    52 km (32 mi) distance
    | USGS | Details
  • 18 Nov 1997 13:13 UTC
    | M 5.4 |
    33 km (20.5 mi) depth
    |
    38 km (24 mi) distance
    | USGS | Details

Earlier earthquakes in the same area

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