Earthquake with magnitude of ML 0.7 on date 01-01-2020 and time 04:20:45 (UTC) in region Costa Ligure centro occidentale (Savona)

A magnitude ML 0.7 earthquake occured in region: Costa Ligure centro occidentale (Savona), on

  • 01-01-2020 04:20:45 (UTC)
  • 01-01-2020 05:20:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.16, 8.49 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
Noli SV 8 2736 2736
Spotorno SV 9 3803 6539
Bergeggi SV 11 1129 7668
Finale Ligure SV 12 11711 19379
Vezzi Portio SV 13 809 20188
Vado Ligure SV 13 8336 28524
Orco Feglino SV 15 890 29414
Borgio Verezzi SV 15 2205 31619
Quiliano SV 16 7232 38851
Calice Ligure SV 16 1730 40581
Pietra Ligure SV 16 8992 49573
Savona SV 16 61345 110918
Tovo San Giacomo SV 18 2582 113500
Rialto SV 18 564 114064
Loano SV 19 11407 125471
Albissola Marina SV 19 5487 130958
Magliolo SV 19 974 131932
Giustenice SV 19 977 132909

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km S of Savona (61345 inhabitants)
45 Km SW of Genova (586655 inhabitants)
68 Km NE of Sanremo (54807 inhabitants)
79 Km E of Cuneo (56081 inhabitants)
84 Km S of Alessandria (93943 inhabitants)
85 Km S of Asti (76202 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
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 (http://www.haisentitoilterremoto.it/) 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
Rev 100 ML 0.7 2020-01-01
04:20:45
44.16 8.49 10 2020-01-01
04:27:07
Sala Sismica INGV-Roma 75158251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-01 04:20:45 ± 0.32
Latitude 44.16 ± 0.01
Longitude 8.49 ± 0.02
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 75158251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1671
Semi-minor axis of confidence ellipse (meter) 843
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 331
Circular confidence region, given by single value of horizontal uncertainty (meter) 1670
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 188
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 11
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
Epicentral distance of station farthest from the epicenter (degree) 0.83727
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0
Num. used stations 2
Type of magnitude ML
Reference to an origin 75158251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-01 04:27:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.GRAM.HHZ. 2020-01-01T04:21:31.06 3.0 undecidable manual S 0.88 0
GU.STV.HHZ. 2020-01-01T04:21:02.00 0.6 undecidable manual P 276 0.8373 50 0.87 35
GU.GBOS.HHZ. 2020-01-01T04:21:02.30 0.6 undecidable manual S 280 0.4721 50 0.38 45
GU.GORR.HHE. 2020-01-01T04:20:59.59 0.1 undecidable manual P 52 0.7276 50 0.34 85
GU.PCP.HHZ. 2020-01-01T04:20:58.90 0.6 undecidable manual S 6 0.3822 50 -0.38 45
GU.RORO.HHZ. 2020-01-01T04:20:56.90 0.6 undecidable manual S 261 0.3067 50 -0.13 49
GU.GBOS.HHZ. 2020-01-01T04:20:54.99 0.1 undecidable manual P 280 0.4721 50 0.11 95
IV.IMI.HHZ. 2020-01-01T04:20:54.94 0.3 positive manual P 240 0.4955 50 -0.35 67
GU.PCP.HHZ. 2020-01-01T04:20:53.04 0.6 negative manual P 6 0.3822 50 -0.32 46
IV.QLNO.HHZ. 2020-01-01T04:20:53.60 0.6 undecidable manual S 328 0.1925 115 0.12 50
GU.RORO.HHZ. 2020-01-01T04:20:51.62 0.6 positive manual P 261 0.3067 50 -0.44 46
IV.QLNO.HHZ. 2020-01-01T04:20:49.91 0.1 positive manual P 328 0.1925 115 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.QLNO.HHN. ML:0.7 3.285E-5 0.16 AML other m 2020-01-01T04:20:53.87
IV.QLNO.HHE. ML:0.8 4.195E-5 0.74 AML other m 2020-01-01T04:20:54.79
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download