Earthquake with magnitude of ML 1.9 on date 23-06-2020 and time 14:23:49 (Italy) in region 1 km N Proceno (VT)

A magnitude ML 1.9 earthquake occured in region: 1 km N Proceno (VT), on

  • 23-06-2020 12:23:49 (UTC)
  • 23-06-2020 14:23:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7680, 11.8300 at 8 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.

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 1 557 557
Acquapendente VT 4 5506 6063
Onano VT 8 995 7058
Castell'Azzara GR 11 1476 8534
Grotte di Castro VT 11 2683 11217
San Lorenzo Nuovo VT 11 2091 13308
San Casciano dei Bagni SI 12 1632 14940
Allerona TR 13 1794 16734
Sorano GR 13 3428 20162
Castel Giorgio TR 14 2131 22293
Gradoli VT 14 1353 23646
Castel Viscardo TR 14 2938 26584
Piancastagnaio SI 15 4230 30814
Radicofani SI 15 1097 31911
Latera VT 16 836 32747
Abbadia San Salvatore SI 18 6444 39191
Fabro TR 18 2876 42067
Bolsena VT 19 3991 46058
Pitigliano GR 20 3818 49876

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NW of Viterbo (67173 inhabitants)
58 Km E of Grosseto (82087 inhabitants)
59 Km SW of Perugia (166134 inhabitants)
71 Km W of Terni (111501 inhabitants)
73 Km SE of Siena (53903 inhabitants)
74 Km W of Foligno (57155 inhabitants)
75 Km N of Civitavecchia (52991 inhabitants)
78 Km S of Arezzo (99543 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 1.9 2020-06-23
12:23:49
42.7682 11.8303 8 2020-11-19
12:37:03
Bollettino Sismico Italiano INGV 83240951
Reviewed
Rev100
ML 1.9 2020-06-23
12:23:49
42.7677 11.8313 8 2020-06-23
12:34:18
Sala Sismica INGV-Roma 80440611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-06-23 12:23:49 ± 0.07
Latitude 42.7682 ± 0.0045
Longitude 11.8303 ± 0.0037
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83240951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 357
Semi-minor axis of confidence ellipse (meter) 352
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 331
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.09982
Epicentral distance of station farthest from the epicenter (degree) 0.71496
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 83240951
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-05 16:32:13

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 80440611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-06-23 12:34:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BARO.EHZ. 2020-06-23T12:24:08.75 0.6 undecidable manual S 163 60.495 50 -0.06 45
IV.ASSB.HHZ. 2020-06-23T12:24:03.75 0.6 undecidable manual P 65 73.8705 50 1.04 32
IV.TOLF.HHN. 2020-06-23T12:24:03.44 0.6 undecidable manual P 170 79.365 50 -0.1 43
IV.ATTE.HNZ. 2020-06-23T12:24:00.68 0.6 undecidable manual P 42 63.8916 50 -0.48 41
IV.BARO.EHZ. 2020-06-23T12:24:00.47 0.6 undecidable manual P 163 60.495 50 -0.17 44
IV.ARCI.HHZ. 2020-06-23T12:23:59.99 0.6 undecidable manual S 288 30.3474 104 -0.35 45
IV.MGAB.HHZ. 2020-06-23T12:23:59.70 0.3 undecidable manual S 55 27.9498 105 0.15 71
TV.SF01.EHZ. 2020-06-23T12:23:57.41 0.3 undecidable manual S 283 22.2555 109 -0.25 70
TV.SF14.HHZ. 2020-06-23T12:23:56.00 0.3 undecidable manual S 265 17.6712 114 -0.16 72
TV.SF13.HHN. 2020-06-23T12:23:56.39 0.6 undecidable manual S 288 18.0708 113 0.1 49
IV.LATE.HHZ. 2020-06-23T12:23:56.29 0.6 undecidable manual S 187 17.2716 114 0.25 47
TV.SF11.HHZ. 2020-06-23T12:23:55.72 0.6 undecidable manual S 312 16.5723 115 -0.12 49
IV.ARCI.HHZ. 2020-06-23T12:23:55.91 0.3 undecidable manual P 288 30.3474 104 0.16 71
TV.SF04.EHZ. 2020-06-23T12:23:55.53 0.3 undecidable manual S 299 15.7731 116 -0.03 74
IV.MCIV.CHZ. 2020-06-23T12:23:54.43 0.3 undecidable manual S 275 12.5763 122 -0.17 73
IV.MGAB.HHZ. 2020-06-23T12:23:54.76 0.1 positive manual P 55 27.9498 105 -0.53 87
TV.SF03.EHE. 2020-06-23T12:23:54.55 0.3 undecidable manual S 288 12.3765 122 0 75
IV.SACS.HHZ. 2020-06-23T12:23:54.16 0.3 undecidable manual S 36 11.0778 125 0 75
TV.SF01.EHZ. 2020-06-23T12:23:54.29 0.1 positive manual P 283 22.2555 109 0.09 97
IV.LATE.HHZ. 2020-06-23T12:23:53.18 0.1 positive manual P 187 17.2716 114 -0.09 98
TV.SF13.HHN. 2020-06-23T12:23:53.49 0.1 negative manual P 288 18.0708 113 0.08 98
TV.SF14.HHZ. 2020-06-23T12:23:53.33 0.1 undecidable manual P 265 17.6712 114 0 99
TV.SF11.HHZ. 2020-06-23T12:23:53.42 0.1 undecidable manual P 312 16.5723 115 0.27 94
TV.SF04.EHZ. 2020-06-23T12:23:53.18 0.1 positive manual P 299 15.7731 116 0.19 96
IV.SACS.HHZ. 2020-06-23T12:23:52.16 0.1 positive manual P 36 11.0778 125 -0.02 100
IV.MCIV.CHZ. 2020-06-23T12:23:52.51 0.1 negative manual P 275 12.5763 122 0.08 99
TV.SF03.EHE. 2020-06-23T12:23:52.58 0.1 negative manual P 288 12.3765 122 0.17 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SACS.HNE. ML:1.8 0.0009635000000000001 0.62 AML other m 2020-06-23T12:23:54.33
IV.SACS.HHE. ML:1.9 0.0010129999999999998 0.62 AML other m 2020-06-23T12:23:54.33
IV.MCIV.CHE. ML:1.8 0.0007920000000000001 0.14 AML other m 2020-06-23T12:23:55.18
IV.SACS.HHN. ML:1.8 0.000985 0.58 AML other m 2020-06-23T12:23:55.78
IV.SACS.HNN. ML:1.8 0.0009025 0.56 AML other m 2020-06-23T12:23:55.78
IV.MCIV.CHN. ML:1.7 0.000612 1.56 AML other m 2020-06-23T12:23:56.15
TV.SF04.EHE. ML:2.0 0.0010550000000000002 0.26 AML other m 2020-06-23T12:23:56.23
TV.SF04.EHN. ML:2.0 0.000958 0.1 AML other m 2020-06-23T12:23:56.85
TV.SF01.EHN. ML:2.3 0.0014 0.16 AML other m 2020-06-23T12:23:58.33
TV.SF01.EHE. ML:2.3 0.00131 0.16 AML other m 2020-06-23T12:23:58.41
IV.LATE.HHE. ML:2.1 0.0011899999999999999 0.9 AML other m 2020-06-23T12:23:59.46
IV.ARCI.HHN. ML:1.6 0.0001915 0.42 AML other m 2020-06-23T12:24:00.34
IV.ARCI.HHE. ML:1.6 0.0001825 0.42 AML other m 2020-06-23T12:24:00.68
IV.MGAB.HNN. ML:1.9 0.00040800000000000005 1.54 AML other m 2020-06-23T12:24:01.80
IV.MGAB.HHN. ML:1.9 0.00040100000000000004 1.54 AML other m 2020-06-23T12:24:01.03
IV.MGAB.HHE. ML:2.0 0.00048150000000000005 1.82 AML other m 2020-06-23T12:24:02.01
IV.MGAB.HNE. ML:1.9 0.00040800000000000005 1.8 AML other m 2020-06-23T12:24:02.02
IV.LATE.HHN. ML:2.2 0.00148 0.28 AML other m 2020-06-23T12:24:02.69
IV.BARO.EHN. ML:1.7 0.00009900000000000001 0.4 AML other m 2020-06-23T12:24:09.42
IV.BARO.EHE. ML:1.6 0.00007300000000000001 0.48 AML other m 2020-06-23T12:24:10.29
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