Earthquake (controlled explosion) with magnitude of ML 1.5 on date 27-01-2020 and time 13:54:10 (Italy) in region Costa Ligure centro occidentale (Savona)

A magnitude ML 1.5 (controlled explosion) earthquake occured in region: Costa Ligure centro occidentale (Savona), on

  • 27-01-2020 12:54:10 (UTC)
  • 27-01-2020 13:54:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.24, 8.49 at 0 km depth.

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

Event type: controlled explosion.

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
Bergeggi SV 4 1129 1129
Vado Ligure SV 5 8336 9465
Spotorno SV 6 3803 13268
Noli SV 7 2736 16004
Savona SV 8 61345 77349
Quiliano SV 9 7232 84581
Albissola Marina SV 10 5487 90068
Vezzi Portio SV 10 809 90877
Albisola Superiore SV 12 10163 101040
Celle Ligure SV 13 5237 106277
Orco Feglino SV 13 890 107167
Finale Ligure SV 14 11711 118878
Varazze SV 15 13251 132129
Altare SV 16 2108 134237
Calice Ligure SV 16 1730 135967
Mallare SV 16 1146 137113
Borgio Verezzi SV 17 2205 139318
Rialto SV 17 564 139882
Stella SV 18 3009 142891
Tovo San Giacomo SV 19 2582 145473
Pietra Ligure SV 19 8992 154465
Magliolo SV 20 974 155439
Pallare SV 20 923 156362

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km S of Savona (61345 inhabitants)
40 Km W of Genova (586655 inhabitants)
73 Km NE of Sanremo (54807 inhabitants)
76 Km S of Alessandria (93943 inhabitants)
77 Km E of Cuneo (56081 inhabitants)
77 Km SE of Asti (76202 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.5 2020-01-27
12:54:10
44.24 8.49 1 2020-01-27
13:10:15
Sala Sismica INGV-Roma 75910901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-27 12:54:10 ± 0.2
Latitude 44.24 ± 0.01
Longitude 8.49 ± 0.02
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type controlled explosion
Origin ID 75910901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1810
Semi-minor axis of confidence ellipse (meter) 820
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 324
Circular confidence region, given by single value of horizontal uncertainty (meter) 1810
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 175
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.0576
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 75910901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-27 13:10:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MNTT.EHZ. 2020-01-27T12:55:51.43 3.0 undecidable manual Sg 22.290001 0
IV.AGLI.HHZ. 2020-01-27T12:55:40.67 3.0 undecidable manual Sn 0.23 0
IV.MRVN.HHZ. 2020-01-27T12:55:32.24 3.0 undecidable manual Pn 8.11 0
OX.MPRI.HHZ. 2020-01-27T12:55:22.32 3.0 undecidable manual Sg 13.58 0
IV.MMUR.HNZ. 2020-01-27T12:55:21.32 3.0 undecidable manual Sg 6.26 0
IV.PTRJ.HNZ. 2020-01-27T12:55:20.35 3.0 undecidable manual Pg 11.5 0
IV.VITU.HHZ. 2020-01-27T12:55:16.15 3.0 undecidable manual Pn 4.75 0
IV.VVLD.HHZ. 2020-01-27T12:55:06.89 3.0 undecidable manual Pg 9.44 0
CR.ZAG.BHZ. 2020-01-27T12:55:04.86 3.0 undecidable manual Pn 4.12 0
IV.STAL.HNZ. 2020-01-27T12:55:01.10 3.0 undecidable manual Sn -3.67 0
GU.PZZ.HHZ. 2020-01-27T12:54:30.16 0.6 undecidable manual P 286 1.0171 50 -0.4 41
GU.BHB.HHZ. 2020-01-27T12:54:30.87 0.6 undecidable manual P 305 1.0576 50 -0.38 40
FR.SAOF.HHZ.00 2020-01-27T12:54:25.19 0.1 undecidable manual P 250 0.7177 50 -0.25 89
GU.ENR.HHZ. 2020-01-27T12:54:25.89 0.6 negative manual P 269 0.7653 50 -0.37 43
GU.ROTM.HHE. 2020-01-27T12:54:23.44 0.1 undecidable manual P 351 0.6178 50 -0.3 90
IV.IMI.HHZ. 2020-01-27T12:54:22.09 0.3 undecidable manual P 233 0.5396 90 -0.29 69
GU.GBOS.HHZ. 2020-01-27T12:54:20.25 0.6 undecidable manual P 271 0.4649 91 -0.48 45
IT.ACQ.HGE. 2020-01-27T12:54:20.07 0.1 undecidable manual P 358 0.4443 91 -0.2 96
IT.GNV.HGE. 2020-01-27T12:54:19.22 0.1 undecidable manual P 58 0.3705 91 0.58 88
GU.RNCA.HHZ. 2020-01-27T12:54:19.19 0.1 undecidable manual P 55 0.4038 91 -0.18 97
IV.ZONE.HHZ. 2020-01-27T12:54:18.08 3.0 undecidable manual Sn -2.92 0
GU.RORO.HHZ. 2020-01-27T12:54:17.80 0.1 undecidable manual P 248 0.3283 91 0.1 100
GU.PCP.HHE. 2020-01-27T12:54:17.06 0.1 undecidable manual P 8 0.3049 91 -0.12 100
GU.CANO.HHZ. 2020-01-27T12:54:15.19 0.1 positive manual P 260 0.1835 91 0.72 87
IV.CADC.HNZ. 2020-01-27T12:54:14.74 3.0 undecidable manual S 2.69 0
IV.QLNO.HHZ. 2020-01-27T12:54:14.11 0.1 undecidable manual P 310 0.1331 92 0.74 87
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.QLNO.HHE. ML:1.5 0.0003815 0.26 AML other m 2020-01-27T12:54:14.30
IV.QLNO.HHN. ML:1.4 0.0002825 0.2 AML other m 2020-01-27T12:54:14.16
GU.CANO.HHE. ML:1.5 0.000243 0.44 AML other m 2020-01-27T12:54:19.30
GU.CANO.HHN. ML:1.5 0.000247 0.8 AML other m 2020-01-27T12:54:21.84
IV.IMI.HHE. ML:1.5 6.565E-5 0.9 AML other m 2020-01-27T12:54:24.30
IV.IMI.HHN. ML:1.5 6.675E-5 1.2 AML other m 2020-01-27T12:54:28.60
FR.SAOF.HHN.00 ML:1.5 4.43E-5 0.4 AML other m 2020-01-27T12:54:28.89
FR.SAOF.HHE.00 ML:1.5 4.63E-5 0.44 AML other m 2020-01-27T12:54:41.31
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