Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 08-10-2023 and time 15:02:08 (Italy) in region 1 km SE San Lorenzo Nuovo (VT)

A magnitude ML 2.2 earthquake occured in region: 1 km SE San Lorenzo Nuovo (VT), on

  • 08-10-2023 13:02:08 (UTC)
  • 08-10-2023 15:02:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6820, 11.9100 at 4 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
San Lorenzo Nuovo VT 1 2091 2091
Grotte di Castro VT 3 2683 4774
Gradoli VT 6 1353 6127
Castel Giorgio TR 7 2131 8258
Bolsena VT 8 3991 12249
Onano VT 8 995 13244
Acquapendente VT 8 5506 18750
Latera VT 9 836 19586
Proceno VT 11 557 20143
Castel Viscardo TR 11 2938 23081
Valentano VT 15 2868 25949
Capodimonte VT 15 1731 27680
Allerona TR 15 1794 29474
Porano TR 16 1966 31440
Sorano GR 16 3428 34868
Marta VT 16 3499 38367
Bagnoregio VT 17 3650 42017
Orvieto TR 17 20630 62647
Lubriano VT 17 909 63556
Montefiascone VT 19 13432 76988
Piansano VT 19 2079 79067
Ischia di Castro VT 20 2326 81393

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of Viterbo (67173 inhabitants)
61 Km SW of Perugia (166134 inhabitants)
62 Km W of Terni (111501 inhabitants)
66 Km E of Grosseto (82087 inhabitants)
66 Km N of Civitavecchia (52991 inhabitants)
72 Km W of Foligno (57155 inhabitants)
85 Km SE of Siena (53903 inhabitants)
87 Km S of Arezzo (99543 inhabitants)
100 Km NW of Roma (2864731 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 2.2 2023-10-08
13:02:08		 42.6823 11.9098 4 2023-10-08
13:23:55		 Sala Sismica INGV-Roma 121892371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-08 13:02:08 ± 0.23
Latitude 42.6823 ± 0.0099
Longitude 11.9098 ± 0.0110
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121892371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1106
Semi-minor axis of confidence ellipse (meter) 790
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 206
Circular confidence region, given by single value of horizontal uncertainty (meter) 1110.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 200
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.13135
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 16
Magnitude information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 121892371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-08 13:23:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OX.CIMO.HHZ. 2023-10-08T13:03:28.95 3.0 undecidable manual Sg 14.14 0
IV.SALB.HHZ. 2023-10-08T13:03:12.27 3.0 negative manual Pg 19.389999 0
7C.SPAOL.HNZ. 2023-10-08T13:03:11.16 3.0 undecidable manual Pn 3.54 0
IV.VITU.HHZ. 2023-10-08T13:03:08.05 3.0 undecidable manual Sn 0.22 0
OX.MARN.HHZ. 2023-10-08T13:02:59.67 3.0 undecidable manual Sg 5.78 0
IV.LPEL.HHZ. 2023-10-08T13:02:55.59 3.0 undecidable manual Sn 3.85 0
OT.OT05.EHZ. 2023-10-08T13:02:45.34 3.0 undecidable manual Pg 10.95 0
IV.MPAG.EHZ. 2023-10-08T13:02:45.84 3.0 undecidable manual S 33 125.5743 50 0.33 0
IV.CSP1.EHZ. 2023-10-08T13:02:43.21 0.3 undecidable manual S 66 114.5964 50 0.61 54
IV.FDMO.HHZ. 2023-10-08T13:02:40.02 0.6 undecidable manual S 67 103.5186 50 0.4 40
IV.PTRJ.HHZ. 2023-10-08T13:02:38.48 3.0 undecidable manual Pg 12.44 0
IV.NRCA.HHZ. 2023-10-08T13:02:38.50 0.6 undecidable manual S 80 99.5226 50 -0.06 43
IV.LNSS.HHZ. 2023-10-08T13:02:37.05 0.3 undecidable manual S 95 92.6406 50 0.32 62
IV.ATCC.EHZ. 2023-10-08T13:02:33.92 0.3 undecidable manual S 47 81.4518 50 0.19 65
IV.ATMI.HHZ. 2023-10-08T13:02:32.65 0.6 undecidable manual S 22 77.9664 50 -0.15 44
IV.VARE.HHZ. 2023-10-08T13:02:31.55 3.0 undecidable manual Pn 4.42 0
IV.CAFI.HHZ. 2023-10-08T13:02:30.63 0.3 undecidable manual S 4 71.8725 50 -0.56 60
IV.MPAG.EHZ. 2023-10-08T13:02:30.47 0.3 undecidable manual P 33 125.5743 50 0.78 50
IV.ASSB.HHZ. 2023-10-08T13:02:30.43 3.0 undecidable manual Sg 7.95 0
IV.GATE.HNZ. 2023-10-08T13:02:28.23 3.0 undecidable manual Pn -0.37 0
IV.PIEI.HHZ. 2023-10-08T13:02:27.78 0.6 undecidable manual P 28 107.3148 50 0.9 33
IV.CSP1.EHZ. 2023-10-08T13:02:27.78 0.6 undecidable manual P 66 114.5964 50 -0.22 40
MN.TRI.HHZ. 2023-10-08T13:02:27.53 3.0 undecidable manual Pn -3.63 0
IV.MOMA.HHZ. 2023-10-08T13:02:26.06 1.0 undecidable manual S 76 55.5 50 -0.74 19
IV.FDMO.HHZ. 2023-10-08T13:02:26.21 0.6 undecidable manual P 67 103.5186 50 -0.08 42
IV.NRCA.HHZ. 2023-10-08T13:02:25.07 0.3 undecidable manual P 80 99.5226 50 -0.61 56
IV.LNSS.HHZ. 2023-10-08T13:02:24.31 0.3 undecidable manual P 95 92.6406 50 -0.31 62
IV.ATMI.HHZ. 2023-10-08T13:02:22.90 1.0 undecidable manual P 22 77.9664 50 0.55 20
IV.ARCI.HHZ. 2023-10-08T13:02:22.00 0.6 undecidable manual S 298 40.0266 96 -0.05 48
IV.ATCC.EHZ. 2023-10-08T13:02:22.60 0.6 undecidable manual P 47 81.4518 50 -0.28 42
IV.SRES.HHZ. 2023-10-08T13:02:21.74 3.0 undecidable manual Sn -1.29 0
IV.CAFI.HHZ. 2023-10-08T13:02:20.59 0.6 undecidable manual P 4 71.8725 50 -0.83 36
OX.MARN.HHZ. 2023-10-08T13:02:19.25 3.0 undecidable manual Pn -1.08 0
IV.CESX.HHN. 2023-10-08T13:02:19.50 0.6 undecidable manual P 98 55.7997 50 0.56 42
IV.MOMA.HHZ. 2023-10-08T13:02:18.08 1.0 undecidable manual P 76 55.5 50 -0.81 19
IV.MGAB.HHZ. 2023-10-08T13:02:18.43 0.6 undecidable manual S 33 30.4473 98 -0.3 46
IV.BARO.EHZ. 2023-10-08T13:02:17.02 3.0 undecidable manual Sn 0.68 0
TV.SF11.HHE. 2023-10-08T13:02:17.32 0.3 undecidable manual S 318 27.9498 99 -0.56 65
IV.ARCI.HHZ. 2023-10-08T13:02:16.31 0.6 undecidable manual P 298 40.0266 96 0.17 47
IV.SFI.EHZ. 2023-10-08T13:02:16.62 3.0 undecidable manual Sg -3.29 0
IV.MCIV.CHZ. 2023-10-08T13:02:16.53 1.0 undecidable manual S 299 21.7671 101 0.74 20
IV.SACS.HHZ. 2023-10-08T13:02:15.36 0.1 undecidable manual S 360 18.4704 103 0.69 84
IV.CAMP.HHZ. 2023-10-08T13:02:15.07 3.0 positive manual Pn 4.99 0
IV.LRP.EHZ. 2023-10-08T13:02:15.25 3.0 negative manual Pn -0.63 0
IV.MGAB.HHZ. 2023-10-08T13:02:13.56 0.1 undecidable manual P 33 30.4473 98 -0.66 83
TV.SF11.HHE. 2023-10-08T13:02:13.96 0.6 undecidable manual P 318 27.9498 99 0.23 47
IV.MCIV.CHZ. 2023-10-08T13:02:12.91 0.6 undecidable manual P 299 21.7671 101 0.39 46
IV.SACS.HHZ. 2023-10-08T13:02:11.84 0.1 undecidable manual P 360 18.4704 103 -0.04 100
IV.BARO.EHZ. 2023-10-08T13:02:01.50 3.0 positive manual Pn 2.27 0
IV.SFI.EHZ. 2023-10-08T13:01:59.25 3.0 undecidable manual P -1.99 0
IV.RIBO.EHZ.01 2023-10-08T13:01:59.80 3.0 undecidable manual Sg -1.35 0
GU.CARD.HHZ. 2023-10-08T13:01:57.87 3.0 positive manual P -1.33 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RIBO.EHE.01 ML:1.6 0.000054199999999999996 0.76 AML other m 2023-10-08T13:02:04.98
IV.SACS.HHE. ML:2.3 0.0017050000000000001 0.56 AML other m 2023-10-08T13:02:15.92
IV.SACS.HNE. ML:2.3 0.001805 0.58 AML other m 2023-10-08T13:02:15.93
IV.SACS.HNN. ML:2.2 0.0013900000000000002 1 AML other m 2023-10-08T13:02:16.57
IV.SACS.HHN. ML:2.2 0.00146 1 AML other m 2023-10-08T13:02:16.57
IV.LRP.EHN. ML:2.1 0.0000444 0.06 AML other m 2023-10-08T13:02:17.72
IV.LRP.EHE. ML:2.2 0.000057300000000000004 0.58 AML other m 2023-10-08T13:02:18.53
IV.MCIV.CHN. ML:2.1 0.000951 1.6 AML other m 2023-10-08T13:02:19.83
IV.MGAB.HHN. ML:2.5 0.0016400000000000002 0.9 AML other m 2023-10-08T13:02:19.92
IV.MGAB.HNE. ML:2.4 0.001355 1.52 AML other m 2023-10-08T13:02:19.77
IV.MGAB.HHE. ML:2.5 0.0014550000000000001 1.52 AML other m 2023-10-08T13:02:19.77
IV.MCIV.CHE. ML:2.2 0.0011600000000000002 1.1 AML other m 2023-10-08T13:02:19.32
IV.MGAB.HNN. ML:2.5 0.0015300000000000001 0.34 AML other m 2023-10-08T13:02:20.27
IV.RIBO.EHN.01 ML:1.7 0.000071491 1.5 AML other m 2023-10-08T13:02:21.84
IV.BARO.EHE. ML:1.2 0.00004055 1.24 AML other m 2023-10-08T13:02:25.19
IV.MOMA.HNN. ML:2.2 0.00035350000000000003 0.6 AML other m 2023-10-08T13:02:27.48
IV.BARO.HNE. ML:2.1 0.00033999999999999997 0.82 AML other m 2023-10-08T13:02:27.47
IV.MOMA.HHE. ML:2.3 0.0004385 0.46 AML other m 2023-10-08T13:02:27.47
IV.MOMA.HNE. ML:2.2 0.000378 0.24 AML other m 2023-10-08T13:02:28.95
IV.MOMA.HHN. ML:2.0 0.0002565 0.96 AML other m 2023-10-08T13:02:29.25
IV.BARO.HNN. ML:2.2 0.0003845 0.38 AML other m 2023-10-08T13:02:30.37
IV.BARO.EHN. ML:2.1 0.0003375 0.36 AML other m 2023-10-08T13:02:30.37
IV.SRES.HHE. ML:1.7 0.00007935 0.24 AML other m 2023-10-08T13:02:32.27
IV.SRES.HHN. ML:1.8 0.00009340000000000001 0.4 AML other m 2023-10-08T13:02:32.70
IV.CAFI.HHE. ML:2.0 0.0001735 0.22 AML other m 2023-10-08T13:02:33.12
IV.CAFI.HHN. ML:2.0 0.00016499999999999997 1.6 AML other m 2023-10-08T13:02:34.85
IV.ASSB.HHN. ML:2.1 0.0001895 1.32 AML other m 2023-10-08T13:02:34.84
IV.ASSB.HHE. ML:2.0 0.00016499999999999997 0.62 AML other m 2023-10-08T13:02:34.28
IV.ATMI.HHN. ML:2.6 0.0006154999999999999 0.5 AML other m 2023-10-08T13:02:35.45
IV.ATCC.EHN. ML:2.4 0.000303 0.68 AML other m 2023-10-08T13:02:36.40
IV.ATMI.HHE. ML:2.8 0.000965 1.32 AML other m 2023-10-08T13:02:37.25
IV.ATCC.EHE. ML:2.4 0.000368 1.54 AML other m 2023-10-08T13:02:38.08
IV.LNSS.HHE. ML:2.2 0.00016749999999999998 1.06 AML other m 2023-10-08T13:02:40.63
IV.NRCA.HHN. ML:1.9 0.00007439999999999999 1.02 AML other m 2023-10-08T13:02:40.02
IV.FDMO.HHE. ML:2.0 0.00008635000000000001 0.78 AML other m 2023-10-08T13:02:42.44
GU.CARD.HHE. ML:2.1 0.00003775 0.06 AML other m 2023-10-08T13:02:42.76
GU.CARD.HHN. ML:1.9 0.000026500000000000004 0.06 AML other m 2023-10-08T13:02:42.80
IV.LNSS.HHN. ML:2.1 0.0001575 1.4 AML other m 2023-10-08T13:02:42.19
IV.FDMO.HHN. ML:1.9 0.00007475000000000001 0.36 AML other m 2023-10-08T13:02:43.36
IV.PIEI.HHN. ML:2.0 0.00008560000000000001 0.66 AML other m 2023-10-08T13:02:43.36
IV.NRCA.HHE. ML:2.0 0.00009085 0.22 AML other m 2023-10-08T13:02:44.47
IV.PIEI.HHE. ML:2.1 0.000118 0.98 AML other m 2023-10-08T13:02:44.95
IV.CSP1.EHE. ML:2.5 0.000255 1.54 AML other m 2023-10-08T13:02:47.20
IV.CAMP.HHN. ML:1.8 0.0000382 0.74 AML other m 2023-10-08T13:02:47.23
IV.CSP1.EHN. ML:2.6 0.0003115 0.54 AML other m 2023-10-08T13:02:48.72
IV.MPAG.EHN. ML:1.9 0.00005434999999999999 0.54 AML other m 2023-10-08T13:02:49.51
IV.MPAG.EHE. ML:1.9 0.00004865 0.62 AML other m 2023-10-08T13:02:51.81
IV.CAMP.HHE. ML:1.8 0.0000485 0.76 AML other m 2023-10-08T13:02:52.67
MN.TRI.HHN. ML:2.5 0.0000242 1.04 AML other m 2023-10-08T13:02:57.28
IV.LPEL.HHN. ML:2.3 0.000056149999999999996 1.02 AML other m 2023-10-08T13:03:01.07
IV.LPEL.HHE. ML:2.1 0.00004195 0.14 AML other m 2023-10-08T13:03:01.89
MN.TRI.HHE. ML:2.7 0.0000351 0.8 AML other m 2023-10-08T13:03:11.52
OX.MARN.HHE. ML:2.4 0.0000234 0.82 AML other m 2023-10-08T13:03:18.61
OX.MARN.HHN. ML:2.5 0.00003065 1.42 AML other m 2023-10-08T13:03:29.05
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
Waveforms Seismic signals in miniseed + resp format Download