Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 24-02-2023 and time 12:21:07 (Italy) in region 8 km NW Proceno (VT)

A magnitude ML 2.3 earthquake occured in region: 8 km NW Proceno (VT), on

  • 24-02-2023 11:21:07 (UTC)
  • 24-02-2023 12:21:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8180, 11.7810 at 6 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Proceno VT 8 557 557
Piancastagnaio SI 8 4230 4787
Castell'Azzara GR 8 1476 6263
Radicofani SI 9 1097 7360
San Casciano dei Bagni SI 10 1632 8992
Acquapendente VT 11 5506 14498
Abbadia San Salvatore SI 11 6444 20942
Onano VT 14 995 21937
Allerona TR 16 1794 23731
Santa Fiora GR 16 2622 26353
Sorano GR 16 3428 29781
Grotte di Castro VT 18 2683 32464
San Lorenzo Nuovo VT 18 2091 34555
Cetona SI 19 2755 37310
Castel Viscardo TR 19 2938 40248
Fabro TR 20 2876 43124

Municipalities with at least 50000 inhabitants

An earthquake occurred to
52 Km NW of Viterbo (67173 inhabitants)
55 Km E of Grosseto (82087 inhabitants)
59 Km SW of Perugia (166134 inhabitants)
67 Km SE of Siena (53903 inhabitants)
73 Km S of Arezzo (99543 inhabitants)
76 Km W of Terni (111501 inhabitants)
77 Km W of Foligno (57155 inhabitants)
81 Km N of Civitavecchia (52991 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 2.3 2023-02-24
11:21:07		 42.8183 11.7808 6 2024-03-01
17:17:59		 Bollettino Sismico Italiano INGV 115394741
Reviewed
Rev100 		ML 2.3 2023-02-24
11:21:08		 42.8168 11.7735 5 2023-02-24
11:29:22		 Sala Sismica INGV-Roma 114756411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-24 11:21:07 ± 0.08
Latitude 42.8183 ± 0.0054
Longitude 11.7808 ± 0.0049
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 115394741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 459
Semi-minor axis of confidence ellipse (meter) 453
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 341
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.08633
Epicentral distance of station farthest from the epicenter (degree) 1.15653
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 32
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 56
Type of magnitude ML
Reference to an origin 115394741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-03-15 14:47:05

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 114756411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-24 11:29:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATVO.HHZ. 2023-02-24T11:21:33.92 0.6 undecidable manual S 39 80.4639 50 0.79 37
IV.ATCC.EHZ. 2023-02-24T11:21:33.46 0.6 undecidable manual S 59 80.7636 50 0.27 43
IV.SMA1.EHZ. 2023-02-24T11:21:30.49 0.6 undecidable manual P 99 128.3715 50 0.6 36
IV.ATMI.HHZ. 2023-02-24T11:21:30.81 0.6 undecidable manual S 34 69.4749 50 0.61 40
IV.CSP1.EHZ. 2023-02-24T11:21:28.91 0.6 undecidable manual P 75 119.4915 50 0.39 39
IV.MC2.EHZ. 2023-02-24T11:21:28.52 0.6 undecidable manual P 84 114.996 50 0.7 35
IV.CAFI.HHZ. 2023-02-24T11:21:27.67 0.6 undecidable manual S 15 58.5969 50 0.38 44
IV.FDMO.HHZ. 2023-02-24T11:21:27.36 0.6 undecidable manual P 77 108.8133 50 0.49 39
IV.MML1.EHZ. 2023-02-24T11:21:26.31 0.3 undecidable manual P 71 102.0201 50 0.48 59
IV.PIEI.HHZ. 2023-02-24T11:21:25.61 0.3 undecidable manual P 37 100.2219 50 0.06 65
IV.PARC.HHZ. 2023-02-24T11:21:25.60 0.3 undecidable manual P 22 99.2229 50 0.21 63
IV.ATPI.EHZ. 2023-02-24T11:21:23.53 0.3 undecidable manual P 35 86.3469 50 0.13 66
IV.CRE.HHZ. 2023-02-24T11:21:23.98 0.3 undecidable manual P 9 89.8434 50 0.03 67
IV.TRIF.CHZ. 2023-02-24T11:21:22.65 0.3 undecidable manual P 295 78.4659 50 0.45 63
IV.ATVO.HHZ. 2023-02-24T11:21:22.03 0.3 undecidable manual P 39 80.4639 50 -0.47 62
IV.ATCC.EHZ. 2023-02-24T11:21:22.29 0.3 undecidable manual P 59 80.7636 50 -0.25 65
IV.MURB.HHZ. 2023-02-24T11:21:21.90 0.3 undecidable manual P 50 77.8665 50 -0.21 66
IV.CASP.HHZ. 2023-02-24T11:21:21.53 0.3 undecidable manual P 268 74.5698 50 -0.06 68
IV.ASSB.HHZ. 2023-02-24T11:21:21.23 0.3 undecidable manual P 70 75.5688 50 -0.51 62
IV.ATMC.EHE. 2023-02-24T11:21:21.74 0.3 undecidable manual P 25 77.2671 50 -0.27 65
IV.FROS.CHE. 2023-02-24T11:21:20.34 0.3 undecidable manual P 311 66.6777 50 -0.04 70
IV.BARO.EHZ. 2023-02-24T11:21:20.16 0.6 undecidable manual P 161 66.9774 50 -0.27 44
IV.ATMI.HHZ. 2023-02-24T11:21:20.45 0.3 undecidable manual P 34 69.4749 50 -0.36 65
IV.RIBO.EHE.01 2023-02-24T11:21:19.62 0.3 undecidable manual P 284 61.3941 50 0.06 70
IV.ATVA.EHE. 2023-02-24T11:21:19.33 0.3 undecidable manual P 39 65.3901 50 -0.85 55
IV.MALA4.EHZ. 2023-02-24T11:21:18.80 0.6 undecidable manual S 310 32.2455 100 -0.53 44
IV.MALA0.EHN. 2023-02-24T11:21:18.67 0.6 undecidable manual S 310 32.4453 100 -0.75 41
IV.MALA5.EHZ. 2023-02-24T11:21:18.90 0.6 undecidable manual S 311 32.3454 100 -0.46 45
IV.CAFI.HHZ. 2023-02-24T11:21:18.54 0.1 positive manual P 15 58.5969 50 -0.6 83
IV.MALA2.EHZ. 2023-02-24T11:21:18.76 0.6 undecidable manual S 310 32.0457 100 -0.51 45
IV.MGAB.HHZ. 2023-02-24T11:21:17.94 0.6 undecidable manual S 69 28.9488 101 -0.26 48
IV.ARCI.HHZ. 2023-02-24T11:21:16.74 0.6 undecidable manual S 279 25.1526 103 -0.18 49
IV.LATE.HHZ. 2023-02-24T11:21:15.56 0.6 undecidable manual S 175 22.755 104 -0.57 45
IV.MALA2.EHZ. 2023-02-24T11:21:14.54 0.3 undecidable manual P 310 32.0457 100 0.04 74
IV.MALA4.EHZ. 2023-02-24T11:21:14.88 0.3 undecidable manual P 310 32.2455 100 0.34 70
IV.MALA0.EHN. 2023-02-24T11:21:14.60 0.3 undecidable manual P 310 32.4453 100 0.01 75
IV.MALA5.EHZ. 2023-02-24T11:21:14.88 0.3 undecidable manual P 311 32.3454 100 0.33 70
IV.ARCI.HHZ. 2023-02-24T11:21:13.29 0.1 positive manual P 279 25.1526 103 0.15 98
IV.MGAB.HHZ. 2023-02-24T11:21:13.45 0.1 positive manual P 69 28.9488 101 -0.44 92
IV.MCIV.CHZ. 2023-02-24T11:21:12.18 0.6 undecidable manual S 243 9.5793 121 0.34 48
IV.LATE.HHZ. 2023-02-24T11:21:12.43 0.3 undecidable manual P 175 22.755 104 -0.26 72
IV.SACS.HHZ. 2023-02-24T11:21:12.61 0.6 undecidable manual S 72 10.9779 117 0.33 48
TV.SF11.HHZ. 2023-02-24T11:21:12.44 0.6 undecidable manual S 304 9.9789 119 0.48 47
IV.MCIV.CHZ. 2023-02-24T11:21:10.40 0.1 positive manual P 243 9.5793 121 0.19 100
IV.SACS.HHZ. 2023-02-24T11:21:10.66 0.1 positive manual P 72 10.9779 117 0.19 100
TV.SF11.HHZ. 2023-02-24T11:21:10.77 0.1 positive manual P 304 9.9789 119 0.49 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCIV.CHE. ML:2.5 0.0055049999999999995 0.28 AML other m 2023-02-24T11:21:12.46
IV.MCIV.CHN. ML:2.4 0.004359999999999999 1.18 AML other m 2023-02-24T11:21:12.30
IV.SACS.HNE. ML:2.4 0.003715 1.44 AML other m 2023-02-24T11:21:15.05
IV.SACS.HHE. ML:2.4 0.0034649999999999998 1.4 AML other m 2023-02-24T11:21:15.07
IV.SACS.HHN. ML:2.5 0.00518 0.28 AML other m 2023-02-24T11:21:15.29
IV.SACS.HNN. ML:2.5 0.005414999999999999 0.28 AML other m 2023-02-24T11:21:15.29
IV.ARCI.HNE. ML:2.2 0.000988 0.24 AML other m 2023-02-24T11:21:18.37
IV.ARCI.HHE. ML:2.2 0.0010225 0.24 AML other m 2023-02-24T11:21:18.37
IV.LATE.HHE. ML:2.5 0.00234 0.32 AML other m 2023-02-24T11:21:19.27
IV.MGAB.HNN. ML:2.3 0.000971 1.68 AML other m 2023-02-24T11:21:20.05
IV.MGAB.HHN. ML:2.3 0.0010400000000000001 1.7 AML other m 2023-02-24T11:21:20.04
IV.MGAB.HNE. ML:2.4 0.00124 0.54 AML other m 2023-02-24T11:21:21.12
IV.MGAB.HHE. ML:2.4 0.00125 0.34 AML other m 2023-02-24T11:21:21.56
IV.LATE.HHN. ML:2.7 0.0037350000000000005 0.42 AML other m 2023-02-24T11:21:21.88
IV.ARCI.HHN. ML:2.0 0.0005875 0.3 AML other m 2023-02-24T11:21:22.46
IV.ARCI.HNN. ML:2.0 0.0005725 0.3 AML other m 2023-02-24T11:21:22.46
IV.CAFI.HHN. ML:1.8 0.0001315 0.66 AML other m 2023-02-24T11:21:28.39
IV.CAFI.HHE. ML:2.0 0.00021400000000000002 0.76 AML other m 2023-02-24T11:21:28.41
IV.ATMI.HHE. ML:2.8 0.00117 0.34 AML other m 2023-02-24T11:21:32.45
IV.ATMI.HHN. ML:2.6 0.000695 1.18 AML other m 2023-02-24T11:21:34.73
IV.BARO.EHE. ML:2.0 0.00020150000000000002 1.52 AML other m 2023-02-24T11:21:35.96
IV.BARO.HNE. ML:2.2 0.00025 1.38 AML other m 2023-02-24T11:21:35.97
IV.CRE.HHE. ML:3.2 0.0017894999999999999 1.5 AML other m 2023-02-24T11:21:36.80
IV.MURB.HHN. ML:2.9 0.00108 0.98 AML other m 2023-02-24T11:21:36.88
IV.ATCC.HNE. ML:2.7 0.000776 0.42 AML other m 2023-02-24T11:21:36.58
IV.MURB.HHE. ML:2.7 0.0008405 0.22 AML other m 2023-02-24T11:21:36.86
IV.MURB.HNE. ML:2.8 0.0009094999999999999 0.22 AML other m 2023-02-24T11:21:36.87
IV.ATVO.HNE. ML:2.4 0.00030300000000000005 0.7 AML other m 2023-02-24T11:21:36.95
IV.ASSB.HHN. ML:2.1 0.0001975 1.28 AML other m 2023-02-24T11:21:37.79
IV.MURB.HNN. ML:2.8 0.0010075000000000001 1.08 AML other m 2023-02-24T11:21:37.36
IV.ASSB.HHE. ML:2.1 0.0001735 0.4 AML other m 2023-02-24T11:21:37.61
IV.ATVO.HHE. ML:2.3 0.00029700000000000006 0.3 AML other m 2023-02-24T11:21:37.75
IV.ATVO.HNN. ML:2.4 0.000352 1.5 AML other m 2023-02-24T11:21:37.78
IV.ATVO.HHN. ML:2.3 0.000294 1.52 AML other m 2023-02-24T11:21:37.80
IV.ATPI.EHN. ML:2.0 0.00013900000000000002 0.44 AML other m 2023-02-24T11:21:39.59
IV.ATCC.HNN. ML:2.6 0.000557 0.74 AML other m 2023-02-24T11:21:39.51
IV.ATCC.EHN. ML:2.7 0.000661 0.68 AML other m 2023-02-24T11:21:39.87
IV.ATCC.EHE. ML:2.6 0.0006435 0.54 AML other m 2023-02-24T11:21:39.87
IV.BARO.HNN. ML:2.0 0.0001965 0.58 AML other m 2023-02-24T11:21:40.04
IV.ATPI.HNE. ML:2.2 0.00022199999999999998 1.26 AML other m 2023-02-24T11:21:40.20
IV.PIEI.HHE. ML:2.0 0.00009065 1.62 AML other m 2023-02-24T11:21:40.99
IV.BARO.EHN. ML:1.9 0.000143 1.04 AML other m 2023-02-24T11:21:41.22
IV.MML1.EHN. ML:2.1 0.0001245 1.3 AML other m 2023-02-24T11:21:42.77
IV.ATPI.EHE. ML:2.0 0.00013900000000000002 0.72 AML other m 2023-02-24T11:21:42.25
IV.CRE.HHN. ML:2.0 0.00010855000000000001 0.78 AML other m 2023-02-24T11:21:42.14
IV.PIEI.HHN. ML:1.8 0.0000621 0.42 AML other m 2023-02-24T11:21:43.00
IV.PARC.HHN. ML:2.1 0.000131 0.64 AML other m 2023-02-24T11:21:43.35
IV.PARC.HHE. ML:2.0 0.0001059 0.34 AML other m 2023-02-24T11:21:43.58
IV.MML1.EHE. ML:2.0 0.00008319999999999999 0.8 AML other m 2023-02-24T11:21:43.99
IV.FDMO.HHN. ML:2.0 0.0000859 1.36 AML other m 2023-02-24T11:21:45.68
IV.FDMO.HHE. ML:1.8 0.0000547 0.48 AML other m 2023-02-24T11:21:46.65
IV.CSP1.EHE. ML:2.4 0.0001795 0.42 AML other m 2023-02-24T11:21:47.31
IV.ATPI.HNN. ML:2.2 0.0002085 0.94 AML other m 2023-02-24T11:21:49.87
IV.CSP1.EHN. ML:2.5 0.0002445 0.44 AML other m 2023-02-24T11:21:49.95
IV.SMA1.EHE. ML:2.3 0.000134 0.44 AML other m 2023-02-24T11:21:53.94
IV.SMA1.EHN. ML:2.2 0.0001105 0.52 AML other m 2023-02-24T11:21:57.06
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