Earthquake with magnitude of ML 1.2 on date 20-02-2020 and time 16:40:15 (Italy) in region Costa Ligure centro orientale (Genova)

A magnitude ML 1.2 earthquake occured in region: Costa Ligure centro orientale (Genova), on

  • 20-02-2020 15:40:15 (UTC)
  • 20-02-2020 16:40:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2, 8.79 at 5 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SW of Genova (586655 inhabitants)
27 Km E of Savona (61345 inhabitants)
81 Km S of Alessandria (93943 inhabitants)
84 Km W of La Spezia (93959 inhabitants)
90 Km E of Sanremo (54807 inhabitants)
91 Km SE of Asti (76202 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 1.2 2020-02-20
44.2 8.79 5 2020-02-20
Sala Sismica INGV-Roma 76674361
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2020-02-20 15:40:15 ± 0.24
Latitude 44.20 ± 0.01
Longitude 8.79 ± 0.01
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76674361


Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1342
Semi-minor axis of confidence ellipse (meter) 567
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 349
Circular confidence region, given by single value of horizontal uncertainty (meter) 1340
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 161
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.29768
Epicentral distance of station farthest from the epicenter (degree) 0.98116
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information


Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 76674361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-20 15:46:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PLMA.HHE. 2020-02-20T15:40:41.51 0.6 undecidable manual S 100 0.7779 50 -0.99 33
GU.ENR.HHZ. 2020-02-20T15:40:34.71 0.1 undecidable manual P 272 0.9812 50 0.08 86
GU.RORO.HHZ. 2020-02-20T15:40:34.93 0.3 undecidable manual S 261 0.5252 50 -0.09 71
IV.PLMA.HHE. 2020-02-20T15:40:31.22 0.1 undecidable manual P 100 0.7779 50 0.06 91
GU.PCP.HHZ. 2020-02-20T15:40:30.41 0.3 undecidable manual S 333 0.3858 97 -0.23 71
GU.GBOS.HHZ. 2020-02-20T15:40:29.61 0.1 undecidable manual P 274 0.6808 50 0.1 92
IV.QLNO.HHZ. 2020-02-20T15:40:28.78 0.1 undecidable manual S 292 0.3417 98 -0.17 97
GU.RORO.HHZ. 2020-02-20T15:40:27.38 0.1 undecidable manual P 261 0.5252 50 0.54 86
GU.RNCA.HHZ. 2020-02-20T15:40:27.76 0.3 undecidable manual S 23 0.2977 99 0.48 69
GU.CANO.HHZ. 2020-02-20T15:40:24.40 0.1 undecidable manual P 272 0.3957 97 -0.12 97
IV.QLNO.HHZ. 2020-02-20T15:40:23.46 0.1 undecidable manual P 292 0.3417 98 0.12 98
GU.PCP.HHZ. 2020-02-20T15:40:23.96 0.1 undecidable manual P 333 0.3858 97 -0.35 92
GU.RNCA.HHZ. 2020-02-20T15:40:22.43 0.1 undecidable manual P 23 0.2977 99 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.RNCA.HHE. ML:0.6 2.0740318E-5 0.704 AML other m 2020-02-20T15:40:27.84
GU.RNCA.HHN. ML:0.5 1.5086645E-5 0.8576 AML other m 2020-02-20T15:40:28.04
IV.QLNO.HHE. ML:1 3.954625E-5 0.1792 AML other m 2020-02-20T15:40:29.33
IV.QLNO.HHN. ML:1.1 5.0516815E-5 0.2048 AML other m 2020-02-20T15:40:28.89
GU.PCP.HHE. ML:1.2 5.0243565E-5 0.3584 AML other m 2020-02-20T15:40:31.77
GU.PCP.HHN. ML:1.1 3.924667E-5 0.2176 AML other m 2020-02-20T15:40:31.76
GU.RORO.HHE. ML:2 0.00019758015 1.9584 AML other m 2020-02-20T15:40:36.00
GU.RORO.HHN. ML:1.3 4.531103E-5 0.064 AML other m 2020-02-20T15:40:35.90
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