Earthquake (controlled explosion) with magnitude of ML 1.3 on date 27-01-2020 and time 13:54:10 (Italy) in region Costa Ligure centro occidentale (Savona)

A magnitude ML 1.3 (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, 8.5 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 5 1129 1129
Vado Ligure SV 6 8336 9465
Spotorno SV 6 3803 13268
Noli SV 7 2736 16004
Savona SV 8 61345 77349
Quiliano SV 10 7232 84581
Albissola Marina SV 10 5487 90068
Vezzi Portio SV 11 809 90877
Albisola Superiore SV 12 10163 101040
Celle Ligure SV 13 5237 106277
Orco Feglino SV 14 890 107167
Finale Ligure SV 14 11711 118878
Varazze SV 15 13251 132129
Altare SV 17 2108 134237
Calice Ligure SV 17 1730 135967
Mallare SV 17 1146 137113
Borgio Verezzi SV 18 2205 139318
Rialto SV 18 564 139882
Stella SV 18 3009 142891
Tovo San Giacomo SV 19 2582 145473
Pietra Ligure SV 20 8992 154465

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 SE of Asti (76202 inhabitants)
77 Km E of Cuneo (56081 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
Bulletin
Rev1000
ML 1.3 2020-01-27
12:54:10
44.24 8.5 1 2020-07-18
21:08:19
Bollettino Sismico Italiano INGV 76287391
Reviewed
Rev100
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 ± 0.17
Latitude 44.24 ± 0.01
Longitude 8.50 ± 0.01
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type controlled explosion
Origin ID 76287391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1510
Semi-minor axis of confidence ellipse (meter) 780
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 329
Circular confidence region, given by single value of horizontal uncertainty (meter) 1510
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.0648
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 15
Magnitudes 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

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 76287391
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-05 16:38:29
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.BHB.HHZ. 2020-01-27T12:54:31.22 0.3 undecidable manual P 305 1.0648 50 -0.1 63
GU.PZZ.HHZ. 2020-01-27T12:54:30.32 0.3 undecidable manual P 286 1.0243 50 -0.31 61
IV.PLMA.HHE. 2020-01-27T12:54:30.66 0.6 undecidable manual P 100 0.9893 50 0.63 37
GU.ENR.HHZ. 2020-01-27T12:54:25.71 0.3 undecidable manual P 270 0.7725 50 -0.62 59
FR.SAOF.HHZ.00 2020-01-27T12:54:25.72 0.6 undecidable manual P 250 0.7231 50 0.23 44
GU.GORR.HHN. 2020-01-27T12:54:24.58 0.3 undecidable manual P 56 0.6772 50 -0.11 69
GU.ROTM.HHE. 2020-01-27T12:54:24.03 0.6 undecidable manual P 350 0.6214 50 0.28 45
IV.IMI.HHZ. 2020-01-27T12:54:22.09 0.3 undecidable manual P 233 0.5432 50 -0.31 68
IT.ACQ.HGE. 2020-01-27T12:54:20.03 0.3 undecidable manual P 357 0.447 91 -0.25 70
GU.GBOS.HHZ. 2020-01-27T12:54:20.35 0.1 undecidable manual P 271 0.4721 91 -0.48 88
GU.RNCA.HHZ. 2020-01-27T12:54:19.19 0.1 undecidable manual P 54 0.3993 91 -0.03 99
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 0.3345 91 0.03 100
GU.PCP.HHE. 2020-01-27T12:54:17.06 0.1 undecidable manual P 6 0.3067 91 -0.1 99
GU.CANO.HHZ. 2020-01-27T12:54:15.19 0.1 positive manual P 261 0.1898 91 0.63 89
IV.CADC.HNZ. 2020-01-27T12:54:14.74 3.0 undecidable manual S 2.69 0
IV.QLNO.HHZ. 2020-01-27T12:54:14.12 0.1 undecidable manual P 309 0.1412 92 0.65 89
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.QLNO.HHN. ML:0 0.0002825 0.2 AML other m 2020-01-27T12:54:14.16
GU.CANO.HHE. ML:0 0.000243 0.44 AML other m 2020-01-27T12:54:19.30
GU.RNCA.HHN. ML:0.9 2.2551565E-5 0.0576 AML other m 2020-01-27T12:54:19.77
GU.RNCA.HHE. ML:1 3.6941025E-5 0.0768 AML other m 2020-01-27T12:54:19.77
GU.CANO.HHN. ML:0 0.000247 0.8 AML other m 2020-01-27T12:54:21.84
IV.IMI.HHE. ML:1.3 4.172925E-5 0.1984 AML other m 2020-01-27T12:54:24.02
GU.GBOS.HHN. ML:1.1 3.1235545E-5 0.3776 AML other m 2020-01-27T12:54:28.72
GU.GBOS.HHE. ML:1.1 3.0037415E-5 0.2368 AML other m 2020-01-27T12:54:29.58
IV.IMI.HHN. ML:1.4 5.5451255E-5 0.32 AML other m 2020-01-27T12:54:37.16
FR.SAOF.HHE.00 ML:1.5 4.032172E-5 0.4992 AML other m 2020-01-27T12:54:41.91
FR.SAOF.HHN.00 ML:1.5 3.912633E-5 0.4608 AML other m 2020-01-27T12:54:43.15
GU.BHB.HHE. ML:1.6 3.041417E-5 0.3456 AML other m 2020-01-27T12:54:46.98
GU.BHB.HHN. ML:1.4 1.90530025E-5 0.2624 AML other m 2020-01-27T12:54:50.52
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