Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 05-08-2022 and time 11:56:20 (Italy) in region 3 km SW Cetona (SI)

A magnitude ML 1.8 earthquake occured in region: 3 km SW Cetona (SI), on

  • 05-08-2022 09:56:20 (UTC)
  • 05-08-2022 11:56:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9360, 11.8830 at 2 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
Cetona SI 3 2755 2755
Sarteano SI 6 4717 7472
San Casciano dei Bagni SI 7 1632 9104
Città della Pieve PG 10 7712 16816
Radicofani SI 10 1097 17913
Chiusi SI 11 8704 26617
Fabro TR 13 2876 29493
Monteleone d'Orvieto TR 14 1467 30960
Chianciano Terme SI 14 7105 38065
Allerona TR 16 1794 39859
Piegaro PG 17 3669 43528
Montegabbione TR 17 1216 44744
Abbadia San Salvatore SI 18 6444 51188
Paciano PG 18 975 52163
Piancastagnaio SI 18 4230 56393
Ficulle TR 19 1669 58062
Montepulciano SI 19 14097 72159
Parrano TR 20 534 72693

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km W of Perugia (166134 inhabitants)
59 Km S of Arezzo (99543 inhabitants)
60 Km NW of Viterbo (67173 inhabitants)
62 Km SE of Siena (53903 inhabitants)
66 Km E of Grosseto (82087 inhabitants)
67 Km W of Foligno (57155 inhabitants)
75 Km NW of Terni (111501 inhabitants)
94 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 1.8 2022-08-05
09:56:20		 42.9365 11.883 2 2023-01-31
19:03:35		 Bollettino Sismico Italiano INGV 109179731
Reviewed
Rev100 		ML 1.8 2022-08-05
09:56:20		 42.9177 11.8712 7 2022-08-05
10:09:47		 Sala Sismica INGV-Roma 108142451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-08-05 09:56:20 ± 0.09
Latitude 42.9365 ± 0.0045
Longitude 11.8830 ± 0.0061
Depth (km) 2 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 109179731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 567
Semi-minor axis of confidence ellipse (meter) 287
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 147
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.87594
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 109179731
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-08-31 14:16:32

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 108142451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-08-05 10:09:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RM33.EHZ. 2022-08-05T09:56:58.35 3.0 undecidable manual S 0.36 0
IV.PIEI.HHZ. 2022-08-05T09:56:48.41 0.6 undecidable manual S 38 84.8484 50 0.95 34
IV.PARC.HHZ. 2022-08-05T09:56:48.07 0.3 undecidable manual S 20 84.0492 50 0.81 55
IV.CAMP.HHZ. 2022-08-05T09:56:42.85 3.0 positive manual P -0.34 0
IV.MURB.HHZ. 2022-08-05T09:56:42.69 0.6 undecidable manual S 55 63.3921 50 0.96 35
IV.ATVO.HHN. 2022-08-05T09:56:42.16 0.6 undecidable manual S 40 65.0904 50 -0.04 47
IV.ATMC.EHE. 2022-08-05T09:56:41.76 0.6 undecidable manual S 24 61.8936 50 0.41 44
IT.RMMM.HGZ. 2022-08-05T09:56:41.47 3.0 undecidable manual P -0.19 0
IV.ATLO.EHN. 2022-08-05T09:56:40.62 0.6 undecidable manual S 45 59.6958 50 -0.14 47
IV.LMD.HHZ. 2022-08-05T09:56:40.06 3.0 negative manual P -2.6 0
IV.CSP1.EHZ. 2022-08-05T09:56:40.10 3.0 positive manual P -0.02 0
IV.ATMI.HHZ. 2022-08-05T09:56:39.02 0.6 undecidable manual S 35 54.0015 92 -0.08 48
IV.MOMA.HHZ. 2022-08-05T09:56:39.45 0.6 undecidable manual S 105 57.7977 50 -0.79 39
IV.TOLF.HHN. 2022-08-05T09:56:37.86 0.1 undecidable manual P 174 97.2249 50 -0.06 88
IV.ATVA.EHN. 2022-08-05T09:56:37.56 0.6 undecidable manual S 41 50.0166 92 -0.16 47
IV.PARC.HHZ. 2022-08-05T09:56:36.38 0.1 undecidable manual P 20 84.0492 50 0.5 83
IV.CAFI.HHZ. 2022-08-05T09:56:36.31 0.6 undecidable manual S 9 44.1225 93 0.65 42
IV.BARO.HNZ. 2022-08-05T09:56:35.79 0.1 undecidable manual P 170 77.5668 50 0.9 71
IV.ATBU.EHE. 2022-08-05T09:56:35.38 0.1 undecidable manual P 42 80.4639 50 0.05 91
IV.PIEI.HHZ. 2022-08-05T09:56:35.85 0.1 undecidable manual P 38 84.8484 50 -0.15 89
IV.ATPC.HNE. 2022-08-05T09:56:34.67 0.1 undecidable manual P 37 76.1682 50 0.01 93
IV.FROS.CHE. 2022-08-05T09:56:33.02 0.1 undecidable manual P 297 66.2781 50 -0.12 93
IV.TB03.DHZ.01 2022-08-05T09:56:33.00 0.1 undecidable manual P 39 66.8775 50 -0.24 90
IV.ATPI.EHE. 2022-08-05T09:56:33.87 0.1 undecidable manual P 36 70.8735 50 0.03 94
IV.TSM2.DHN.01 2022-08-05T09:56:33.44 0.1 undecidable manual P 44 70.7736 50 -0.4 87
IV.ATCC.EHZ. 2022-08-05T09:56:33.01 3.0 undecidable manual P -0.11 0
IV.LATE.HHZ. 2022-08-05T09:56:33.41 0.6 undecidable manual S 190 36.3414 93 0.42 46
IV.ATMC.EHE. 2022-08-05T09:56:32.29 0.1 undecidable manual P 24 61.8936 50 -0.18 92
IV.MURB.HHZ. 2022-08-05T09:56:32.53 0.3 negative manual P 55 63.3921 50 -0.16 69
IV.ASSB.HHZ. 2022-08-05T09:56:32.15 0.6 undecidable manual P 79 63.9915 50 -0.65 40
IV.ATVO.HHN. 2022-08-05T09:56:32.71 0.1 undecidable manual P 40 65.0904 50 -0.25 90
IV.MALA1.EHN. 2022-08-05T09:56:31.75 0.6 undecidable manual S 283 33.8439 93 -0.34 47
IV.MOMA.HHZ. 2022-08-05T09:56:31.27 0.1 undecidable manual P 105 57.7977 50 -0.56 85
IV.ATLO.EHN. 2022-08-05T09:56:31.70 0.1 undecidable manual P 45 59.6958 50 -0.43 88
IV.MALA2.EHZ. 2022-08-05T09:56:31.77 0.3 undecidable manual S 283 33.6441 93 -0.28 71
IV.ATMI.HHZ. 2022-08-05T09:56:30.87 0.1 undecidable manual P 35 54.0015 92 -0.3 91
IV.CAFI.HHZ. 2022-08-05T09:56:29.28 0.1 undecidable manual P 9 44.1225 93 0.1 97
IV.ATVA.EHN. 2022-08-05T09:56:29.95 0.1 undecidable manual P 41 50.0166 92 -0.42 90
IV.MCIV.CHZ. 2022-08-05T09:56:28.25 0.6 undecidable manual S 224 24.2535 95 -0.54 45
IV.MGAB.HHZ. 2022-08-05T09:56:27.61 0.6 undecidable manual S 98 18.7701 96 0.71 43
IV.LATE.HHZ. 2022-08-05T09:56:27.41 0.1 undecidable manual P 190 36.3414 93 -0.23 96
IV.MALA1.EHN. 2022-08-05T09:56:27.40 0.1 undecidable manual P 283 33.8439 93 0.27 95
IV.MALA0.EHN. 2022-08-05T09:56:27.36 0.1 undecidable manual P 283 34.1436 93 0.17 97
TV.SF11.HHZ. 2022-08-05T09:56:26.98 0.3 undecidable manual S 246 18.1707 96 0.28 73
IV.MALA2.EHZ. 2022-08-05T09:56:26.86 0.1 undecidable manual P 283 33.6441 93 -0.25 96
IV.MCIV.CHZ. 2022-08-05T09:56:25.10 0.1 undecidable manual P 224 24.2535 95 -0.12 100
TV.SF11.HHZ. 2022-08-05T09:56:24.51 0.1 undecidable manual P 246 18.1707 96 0.5 93
IV.MGAB.HHZ. 2022-08-05T09:56:24.65 0.1 positive manual P 98 18.7701 96 0.52 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MGAB.HNN. ML:2.0 0.0008 0.92 AML other m 2022-08-05T09:56:29.00
IV.MGAB.HHN. ML:2.0 0.0008525000000000001 0.52 AML other m 2022-08-05T09:56:29.00
IV.MGAB.HHE. ML:1.9 0.000699 0.1 AML other m 2022-08-05T09:56:29.12
IV.MGAB.HNE. ML:1.8 0.000638 0.34 AML other m 2022-08-05T09:56:29.13
IV.MCIV.CHN. ML:1.8 0.0004055 0.86 AML other m 2022-08-05T09:56:29.82
IV.MCIV.CHE. ML:1.8 0.000398 0.42 AML other m 2022-08-05T09:56:30.49
IV.LATE.HHE. ML:2.0 0.000457 0.22 AML other m 2022-08-05T09:56:35.34
IV.LATE.HHN. ML:2.1 0.00045900000000000004 0.16 AML other m 2022-08-05T09:56:35.41
IV.CAFI.HHE. ML:1.6 0.00013450000000000002 0.98 AML other m 2022-08-05T09:56:36.90
IV.CAFI.HHN. ML:1.4 0.00008494999999999999 0.26 AML other m 2022-08-05T09:56:37.78
IV.MOMA.HHE. ML:1.7 0.00010225 0.26 AML other m 2022-08-05T09:56:40.81
IV.MOMA.HHN. ML:1.6 0.000083 0.8 AML other m 2022-08-05T09:56:40.85
IV.ATMI.HHE. ML:2.1 0.000317 1.58 AML other m 2022-08-05T09:56:41.07
IV.ATMI.HHN. ML:2.0 0.0002605 1.58 AML other m 2022-08-05T09:56:41.84
IV.ASSB.HHE. ML:1.3 0.000035799999999999996 0.48 AML other m 2022-08-05T09:56:45.28
IV.MURB.HHE. ML:2.3 0.0004235 0.22 AML other m 2022-08-05T09:56:46.26
IV.MURB.HHN. ML:2.4 0.000536 0.34 AML other m 2022-08-05T09:56:46.52
IV.ASSB.HHN. ML:1.5 0.000055350000000000004 0.44 AML other m 2022-08-05T09:56:46.44
IV.ATCC.HNN. ML:2.2 0.0002585 0.82 AML other m 2022-08-05T09:56:46.36
IV.ATCC.HNE. ML:2.7 0.0008764999999999999 1.3 AML other m 2022-08-05T09:56:47.33
IV.ATCC.EHE. ML:1.8 0.0001027 1.5 AML other m 2022-08-05T09:56:49.91
IV.ATCC.EHN. ML:1.7 0.0000958 0.6 AML other m 2022-08-05T09:56:51.06
IV.PIEI.HHE. ML:1.5 0.00004205 0.78 AML other m 2022-08-05T09:56:51.80
IV.PARC.HHE. ML:1.5 0.000043249999999999994 1.56 AML other m 2022-08-05T09:56:52.01
IV.PIEI.HHN. ML:1.4 0.00003145 0.28 AML other m 2022-08-05T09:56:52.77
IV.PARC.HHN. ML:1.5 0.00003755 0.54 AML other m 2022-08-05T09:56:55.65
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