Earthquake with magnitude of ML 1.6 on date 27-11-2023 and time 09:16:30 (UTC) in region 3 km NW Rialto (SV)

A magnitude ML 1.6 earthquake occured in region: 3 km NW Rialto (SV), on

  • 27-11-2023 09:16:30 (UTC)
  • 27-11-2023 10:16:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2350, 8.2480 at 12 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
Rialto SV 3 564 564
Magliolo SV 5 974 1538
Calice Ligure SV 5 1730 3268
Bormida SV 5 387 3655
Osiglia SV 6 444 4099
Orco Feglino SV 6 890 4989
Tovo San Giacomo SV 7 2582 7571
Giustenice SV 7 977 8548
Mallare SV 8 1146 9694
Vezzi Portio SV 9 809 10503
Borgio Verezzi SV 9 2205 12708
Pietra Ligure SV 10 8992 21700
Bardineto SV 10 756 22456
Calizzano SV 11 1475 23931
Finale Ligure SV 11 11711 35642
Pallare SV 11 923 36565
Boissano SV 11 2492 39057
Murialdo SV 11 841 39898
Loano SV 12 11407 51305
Toirano SV 12 2644 53949
Borghetto Santo Spirito SV 13 4948 58897
Balestrino SV 13 595 59492
Altare SV 14 2108 61600
Plodio SV 14 650 62250
Spotorno SV 14 3803 66053
Noli SV 14 2736 68789
Carcare SV 14 5587 74376
Quiliano SV 15 7232 81608
Roccavignale SV 15 752 82360
Millesimo SV 15 3383 85743
Cosseria SV 15 1105 86848
Ceriale SV 15 5561 92409
Vado Ligure SV 16 8336 100745
Castelvecchio di Rocca Barbena SV 16 145 100890
Erli SV 16 245 101135
Massimino SV 16 113 101248
Bergeggi SV 16 1129 102377
Castelnuovo di Ceva CN 16 110 102487
Perlo CN 17 116 102603
Zuccarello SV 17 309 102912
Cengio SV 17 3563 106475
Garessio CN 18 3244 109719
Bagnasco CN 18 1035 110754
Priola CN 18 701 111455
Montezemolo CN 18 259 111714
Cisano sul Neva SV 18 2085 113799
Cairo Montenotte SV 19 13269 127068
Nucetto CN 19 430 127498
Castelbianco SV 19 330 127828

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km W of Savona (61345 inhabitants)
58 Km W of Genova (586655 inhabitants)
58 Km E of Cuneo (56081 inhabitants)
59 Km NE of Sanremo (54807 inhabitants)
74 Km S of Asti (76202 inhabitants)
81 Km SW of Alessandria (93943 inhabitants)
96 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
09:16:30
44.2348 8.2478 12 2023-11-27
09:31:10
Sala Sismica INGV-Roma 123488341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-11-27 09:16:30 ± 0.15
Latitude 44.2348 ± 0.0108
Longitude 8.2478 ± 0.0151
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 123488341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1140
Semi-minor axis of confidence ellipse (meter) 1111
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) 1140.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 157
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 16
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.66010
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 123488341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-11-27 09:31:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SPS2.HHZ. 2023-11-27T09:18:25.81 3.0 positive manual Pn -0.97 0
IV.FIAM.HHZ. 2023-11-27T09:18:22.76 3.0 undecidable manual Sn -2.4 0
IV.MFNL.HHZ. 2023-11-27T09:18:19.16 3.0 negative manual Pn -0.95 0
GU.STV.HHZ. 2023-11-27T09:16:52.48 0.6 undecidable manual S 271 73.2711 91 -0.25 42
FR.SAOF.HHZ.00 2023-11-27T09:16:49.19 0.3 undecidable manual S 244 61.8936 91 -0.5 60
GU.IMI.HHZ. 2023-11-27T09:16:45.23 0.6 undecidable manual S 218 45.7209 91 -0.17 46
GU.BURY.HHZ. 2023-11-27T09:16:44.42 3.0 negative manual P -1.05 0
GU.PCP.HHZ. 2023-11-27T09:16:43.62 0.6 undecidable manual S 35 41.3253 92 -0.61 41
GU.STV.HHZ. 2023-11-27T09:16:43.91 0.1 undecidable manual P 271 73.2711 91 0.48 84
FR.SAOF.HHZ.00 2023-11-27T09:16:42.71 0.6 negative manual P 244 61.8936 91 1.04 34
GU.GBOS.HHZ. 2023-11-27T09:16:41.43 0.6 undecidable manual S 271 32.4453 92 -0.41 43
4P.IT06A.HHZ. 2023-11-27T09:16:40.07 3.0 positive manual P 0.47 0
GU.IMI.HHZ. 2023-11-27T09:16:39.34 0.1 undecidable manual P 218 45.7209 91 0.14 93
GU.PCP.HHZ. 2023-11-27T09:16:38.64 0.1 undecidable manual P 35 41.3253 92 0.12 95
GU.GBOS.HHZ. 2023-11-27T09:16:37.43 0.3 negative manual P 271 32.4453 92 0.29 70
GU.RORO.HHZ. 2023-11-27T09:16:37.69 0.6 undecidable manual S 227 19.7691 97 -0.79 39
IV.QLNO.HHE. 2023-11-27T09:16:36.23 0.6 undecidable manual S 38 12.5763 115 -0.39 46
GU.RORO.HHZ. 2023-11-27T09:16:35.19 0.1 positive manual P 227 19.7691 97 -0.01 99
GU.CANO.HHZ. 2023-11-27T09:16:34.54 0.6 undecidable manual S 195 3.1968 161 -0.39 48
IV.QLNO.HHE. 2023-11-27T09:16:34.34 0.1 undecidable manual P 38 12.5763 115 0.21 98
GU.CANO.HHZ. 2023-11-27T09:16:33.29 0.1 undecidable manual P 195 3.1968 161 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
FR.SAOF.HHN.00 ML:1.4 0.00005295 0.78 AML other m 2023-11-27T09:16:49.99
GU.IMI.HHE. ML:1.4 0.00007105 1.26 AML other m 2023-11-27T09:16:50.78
GU.IMI.HHN. ML:1.6 0.00011399999999999999 1.66 AML other m 2023-11-27T09:16:50.88
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
FR.SAOF.HHE.00 ML:1.4 0.0000514 1.56 AML other m 2023-11-27T09:16:54.84
GU.CANO.HHE. ML:2.0 0.00134955845 0.1792 AML other m 2023-11-27T09:16:34.59
GU.CANO.HHN. ML:1.7 0.0008101785 0.1984 AML other m 2023-11-27T09:16:34.79
GU.RORO.HHE. ML:1.8 0.00051338595 0.1216 AML other m 2023-11-27T09:16:38.04
GU.RORO.HHN. ML:1.8 0.00039977810000000003 0.1984 AML other m 2023-11-27T09:16:37.97
GU.GBOS.HHN. ML:1.8 0.0002475339 0.16 AML other m 2023-11-27T09:16:41.66
GU.PCP.HHE. ML:1.4 0.000089443945 0.096 AML other m 2023-11-27T09:16:44.51
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