Earthquake with magnitude of ML 1.0 on date 26-02-2021 and time 06:11:58 (UTC) in region Costa Ligure centro occidentale (Savona)

A magnitude ML 1.0 earthquake occured in region: Costa Ligure centro occidentale (Savona), on

  • 26-02-2021 06:11:58 (UTC)
  • 26-02-2021 07:11:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.99, 8.39 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Albenga SV 16 24213 24213
Ceriale SV 18 5561 29774
Alassio SV 18 10934 40708
Borghetto Santo Spirito SV 19 4948 45656
Loano SV 19 11407 57063
Laigueglia SV 19 1810 58873
Pietra Ligure SV 20 8992 67865

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km S of Savona (61345 inhabitants)
52 Km E of Sanremo (54807 inhabitants)
64 Km SW of Genova (586655 inhabitants)
81 Km SE of Cuneo (56081 inhabitants)
Recent and historical Seismicity
Seismic hazard
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire ( that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
ML 1.0 2021-02-26
43.99 8.39 10 2021-02-26
Sala Sismica INGV-Roma 87491821
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2021-02-26 06:11:58 ± 0.38
Latitude 43.99 ± 0.01
Longitude 8.39 ± 0.03
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87491821


Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2230
Semi-minor axis of confidence ellipse (meter) 970
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 302
Circular confidence region, given by single value of horizontal uncertainty (meter) 2230
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 264
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.24462
Epicentral distance of station farthest from the epicenter (degree) 1.16822
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information


Field Value
Value 1
Uncertainty 0
Num. used stations 2
Type of magnitude ML
Reference to an origin 87491821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-26 06:17:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.BHB.HHZ. 2021-02-26T06:12:20.86 0.6 undecidable manual P 317 1.1682 50 0.9 31
GU.GBOS.HHZ. 2021-02-26T06:12:14.80 0.3 undecidable manual S 303 0.4703 50 -0.24 69
GU.ENR.HHZ. 2021-02-26T06:12:13.24 0.3 undecidable manual P 289 0.7392 50 0.62 59
GU.IMI.HHZ. 2021-02-26T06:12:11.97 0.1 undecidable manual S 258 0.3687 50 -0.06 97
IV.QLNO.HHZ. 2021-02-26T06:12:10.88 0.3 undecidable manual S 354 0.3354 50 -0.18 71
GU.CANO.HHZ. 2021-02-26T06:12:08.38 0.1 undecidable manual S 333 0.2446 50 0.02 100
GU.GBOS.HHZ. 2021-02-26T06:12:08.22 0.1 undecidable manual P 303 0.4703 50 0.21 92
GU.IMI.HHZ. 2021-02-26T06:12:05.92 0.1 undecidable manual P 258 0.3687 50 -0.35 91
IV.QLNO.HHZ. 2021-02-26T06:12:05.60 0.1 undecidable manual P 354 0.3354 50 -0.12 96
GU.CANO.HHZ. 2021-02-26T06:12:04.07 0.1 undecidable manual P 333 0.2446 50 -0.08 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CANO.HHE. ML:1 5.55E-5 0.96 AML other m 2021-02-26T06:12:09.58
GU.CANO.HHN. ML:1 5.08E-5 1.36 AML other m 2021-02-26T06:12:09.79
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download