Kea-Kythnos Regional Unit, Greece – Earthquakes

This page summarizes earthquakes in Kea-Kythnos Regional Unit (Greece). The most recently recorded event was a magnitude M2.3 earthquake near Kea-Kythnos Regional Unit on 2026-09-12 18:49:10 UTC. All event lists and map markers are limited to the last 30 days.

Seismic profile ↓
Earthquakes (last 30 days)
1
Max magnitude (last 30 days)
M2.3
Avg magnitude (last 30 days)
M2.26
Avg depth (last 30 days)
105 km

Seismic profile

Analysis period12 Sep 2025 – 12 Sep 2026Data as of: 12 Sep 2026 · 20:00 UTC
Minimum magnitude

What the data show

Kea-Kythnos Regional Unit · M ≥ 2.0

After source reconciliation, the catalogue contains 1 event entries of M2.0 or above for this area and period, spread over 1 days.

Catalogue entries112 Sep 2025 – 12 Sep 2026
Strongest recorded earthquakeM2.3Kea-Kythnos Regional Unit ↗
Depth · median104.9 km1 events with valid depth
Last 30 days1Previous 30 days: 0

These figures describe the stored catalogue. Recording, magnitude types and geographic attribution may vary by source and period; completeness has not been established.

12 Sep 2025 – 12 Sep 2026

Earthquakes by month

M ≥ 2.0

Each bar counts events within the selected period. Hatched months are only partially included.

View data table
MonthAnalysis periodCatalogue entries
September 2025 · Partial month12 Sep 2025 – 30 Sep 20250
October 202501 Oct 2025 – 31 Oct 20250
November 202501 Nov 2025 – 30 Nov 20250
December 202501 Dec 2025 – 31 Dec 20250
January 202601 Jan 2026 – 31 Jan 20260
February 202601 Feb 2026 – 28 Feb 20260
March 202601 Mar 2026 – 31 Mar 20260
April 202601 Apr 2026 – 30 Apr 20260
May 202601 May 2026 – 31 May 20260
June 202601 Jun 2026 – 30 Jun 20260
July 202601 Jul 2026 – 31 Jul 20260
August 202601 Aug 2026 – 31 Aug 20260
September 2026 · Partial month01 Sep 2026 – 12 Sep 20261

How strong were the earthquakes?

Catalogue entries · 1

M 2.0 – < 3.01
M 3.0 – < 4.00
M 4.0 – < 5.00
M 5.0 – < 6.00
M ≥ 6.00

At what depth did they occur?

1 events with valid depth

0 – < 30 km0
30 – < 70 km0
70 – < 300 km1
300 – 750 km0

0 events without valid depth are excluded here.

Depth · median

Half of the available values lie on either side of the median; ties are possible.

Current period in context

Last 30 days1
Previous 30 days0
Median of the eleven previous 30-day periods0

Same magnitude threshold, separate periods. Differences may also reflect changes in recording. No hazard level or forecast is inferred.

Where were earthquakes recorded?

Events assigned to Kea-Kythnos Regional Unit in the stored location data are analysed. This is not a radius search. Missing or different attributions are excluded.

The interactive map complements the event links on this page.

Marker size and colour indicate magnitude.

Strongest recorded earthquake

12 Sep 2025 – 12 Sep 2026 · M ≥ 2.0

Data and methodology

Analysis period: 12 Sep 2025 20:00 – 12 Sep 2026 20:00 UTC

Data and methodology

Reports are first reconciled using existing event associations. Additional reports from different sources are consolidated only when every pair is within 5 seconds, 10 km and 0.5 magnitude units, source groups do not overlap and exactly one group matches. Ambiguous cases remain separate. The preferred report determines magnitude, time and area; period and magnitude filters are applied afterwards. The start is included and the end excluded (UTC).

0 additional source reports were consolidated during source reconciliation.

Events assigned to Kea-Kythnos Regional Unit in the stored location data are analysed. This is not a radius search. Missing or different attributions are excluded.

These figures describe the stored catalogue. Recording, magnitude types and geographic attribution may vary by source and period; completeness has not been established.

Source reports used

The preferred report of each group is counted. Source priority follows the earthquake list. Different magnitude types and recording gaps limit comparability.

  • NOA1

The profile is recalculated hourly from the earthquake catalogue. Later source revisions may also change historical values.

Data as of: 12 Sep 2026 · 20:32 UTC

Map (last 30 days)

< 2 2–4 4–5 ≥ 5

Seismic activity in 2026

In 2026, Kea-Kythnos Regional Unit recorded 1 earthquakes within Greece.

Located on the Aegean Sea Plate.

Earthquakes in Kea-Kythnos Regional Unit (last 30 days)

M2.3
Kea-Kythnos Regional Unit
2026-09-12 · 18:49 UTC · 105 km
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