Earthquake with magnitude of ML 1.6 on date 27-11-2023 and time 09:16:09 (UTC) in region 4 km S Bormida (SV)

A magnitude ML 1.6 earthquake occured in region: 4 km S Bormida (SV), on

  • 27-11-2023 09:16:09 (UTC)
  • 27-11-2023 10:16:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2440, 8.2340 at 11 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
Bormida SV 4 387 387
Rialto SV 4 564 951
Osiglia SV 5 444 1395
Magliolo SV 6 974 2369
Calice Ligure SV 6 1730 4099
Mallare SV 8 1146 5245
Orco Feglino SV 8 890 6135
Tovo San Giacomo SV 8 2582 8717
Giustenice SV 8 977 9694
Calizzano SV 9 1475 11169
Bardineto SV 10 756 11925
Pallare SV 10 923 12848
Murialdo SV 10 841 13689
Vezzi Portio SV 10 809 14498
Borgio Verezzi SV 11 2205 16703
Pietra Ligure SV 11 8992 25695
Finale Ligure SV 12 11711 37406
Boissano SV 12 2492 39898
Plodio SV 13 650 40548
Loano SV 13 11407 51955
Toirano SV 13 2644 54599
Altare SV 14 2108 56707
Carcare SV 14 5587 62294
Roccavignale SV 14 752 63046
Millesimo SV 14 3383 66429
Balestrino SV 14 595 67024
Cosseria SV 14 1105 68129
Borghetto Santo Spirito SV 14 4948 73077
Massimino SV 14 113 73190
Castelnuovo di Ceva CN 15 110 73300
Spotorno SV 15 3803 77103
Noli SV 15 2736 79839
Quiliano SV 15 7232 87071
Perlo CN 16 116 87187
Erli SV 16 245 87432
Castelvecchio di Rocca Barbena SV 16 145 87577
Cengio SV 16 3563 91140
Ceriale SV 16 5561 96701
Vado Ligure SV 16 8336 105037
Bagnasco CN 17 1035 106072
Montezemolo CN 17 259 106331
Priola CN 17 701 107032
Bergeggi SV 17 1129 108161
Garessio CN 17 3244 111405
Zuccarello SV 17 309 111714
Nucetto CN 18 430 112144
Cairo Montenotte SV 18 13269 125413
Priero CN 19 529 125942
Cisano sul Neva SV 19 2085 128027
Castelbianco SV 19 330 128357
Saliceto CN 20 1323 129680
Battifollo CN 20 219 129899

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km W of Savona (61345 inhabitants)
57 Km E of Cuneo (56081 inhabitants)
59 Km W of Genova (586655 inhabitants)
59 Km NE of Sanremo (54807 inhabitants)
73 Km S of Asti (76202 inhabitants)
80 Km SW of Alessandria (93943 inhabitants)
95 Km SE of Moncalieri (57294 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
Reviewed
Rev100
ML 1.6 2023-11-27
09:16:09
44.2438 8.2342 11 2023-11-27
09:22:20
Sala Sismica INGV-Roma 123488131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-11-27 09:16:09 ± 0.12
Latitude 44.2438 ± 0.0099
Longitude 8.2342 ± 0.0163
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 123488131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1491
Semi-minor axis of confidence ellipse (meter) 608
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 129
Circular confidence region, given by single value of horizontal uncertainty (meter) 1490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 131
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41369
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 123488131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-11-27 09:22:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.IMI.HHZ. 2023-11-27T09:16:24.29 0.6 undecidable manual S 216 45.9207 90 -0.15 47
GU.STV.HHZ. 2023-11-27T09:16:23.88 3.0 undecidable manual P 0.3 0
GU.BURY.HHZ. 2023-11-27T09:16:23.53 3.0 positive manual P 0.22 0
GU.PCP.HHZ. 2023-11-27T09:16:22.70 0.6 undecidable manual S 37 41.2254 90 -0.5 44
GU.GBOS.HHZ. 2023-11-27T09:16:20.49 0.3 undecidable manual S 270 31.3464 91 -0.07 74
GU.IMI.HHZ. 2023-11-27T09:16:18.42 0.1 undecidable manual P 216 45.9207 90 0.19 93
GU.PCP.HHZ. 2023-11-27T09:16:17.72 1.0 positive manual P 37 41.2254 90 0.21 23
GU.GBOS.HHZ. 2023-11-27T09:16:16.40 1.0 undecidable manual P 270 31.3464 91 0.41 23
GU.RORO.HHZ. 2023-11-27T09:16:16.84 0.6 undecidable manual S 222 19.7691 92 -0.62 43
IV.QLNO.HHZ. 2023-11-27T09:16:15.31 0.6 undecidable manual S 45 12.5763 108 -0.26 48
GU.RORO.HHZ. 2023-11-27T09:16:14.26 0.1 undecidable manual P 222 19.7691 92 0.06 100
IV.QLNO.HHZ. 2023-11-27T09:16:13.39 0.1 undecidable manual P 45 12.5763 108 0.28 97
GU.CANO.HHZ. 2023-11-27T09:16:13.64 0.6 undecidable manual S 176 3.996 154 -0.24 49
GU.CANO.HHZ. 2023-11-27T09:16:12.36 0.1 undecidable manual P 176 3.996 154 0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CANO.HHE. ML:1.9 0.0012095 0.26 AML other m 2023-11-27T09:16:13.66
GU.CANO.HHN. ML:1.5 0.00048550000000000004 0.22 AML other m 2023-11-27T09:16:13.74
IV.QLNO.HHE. ML:1.9 0.0007840000000000001 0.2 AML other m 2023-11-27T09:16:15.36
IV.QLNO.HHN. ML:1.5 0.000326 0.08 AML other m 2023-11-27T09:16:15.44
GU.RORO.HHN. ML:1.6 0.000263 0.12 AML other m 2023-11-27T09:16:17.04
GU.RORO.HHE. ML:1.6 0.00029949999999999996 0.1 AML other m 2023-11-27T09:16:17.11
GU.PCP.HHN. ML:1.2 0.000052199999999999995 0.48 AML other m 2023-11-27T09:16:23.60
GU.PCP.HHE. ML:1.2 0.000056550000000000006 0.72 AML other m 2023-11-27T09:16:23.60
GU.STV.HHN. ML:1.6 0.000072 1.48 AML other m 2023-11-27T09:16:53.02
GU.STV.HHE. ML:1.6 0.0000658 1.26 AML other m 2023-11-27T09:16:53.89
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download