Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 15-05-2020 and time 20:26:02 (UTC) in region 4 km SW Castel Giorgio (TR)

A magnitude ML 2.1 earthquake occured in region: 4 km SW Castel Giorgio (TR), on

  • 15-05-2020 20:26:02 (UTC)
  • 15-05-2020 22:26:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6770, 11.9570 at 10 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
Castel Giorgio TR 4 2131 2131
San Lorenzo Nuovo VT 4 2091 4222
Bolsena VT 4 3991 8213
Grotte di Castro VT 7 2683 10896
Gradoli VT 9 1353 12249
Castel Viscardo TR 10 2938 15187
Acquapendente VT 11 5506 20693
Onano VT 12 995 21688
Latera VT 12 836 22524
Porano TR 12 1966 24490
Bagnoregio VT 13 3650 28140
Lubriano VT 13 909 29049
Orvieto TR 13 20630 49679
Proceno VT 14 557 50236
Capodimonte VT 15 1731 51967
Allerona TR 15 1794 53761
Marta VT 16 3499 57260
Valentano VT 16 2868 60128
Montefiascone VT 17 13432 73560
Celleno VT 19 1355 74915
Sorano GR 20 3428 78343
Ficulle TR 20 1669 80012

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Viterbo (67173 inhabitants)
58 Km W of Terni (111501 inhabitants)
59 Km SW of Perugia (166134 inhabitants)
66 Km N of Civitavecchia (52991 inhabitants)
68 Km W of Foligno (57155 inhabitants)
70 Km E of Grosseto (82087 inhabitants)
88 Km SE of Siena (53903 inhabitants)
88 Km S of Arezzo (99543 inhabitants)
97 Km NW of Roma (2864731 inhabitants)
98 Km NW of Guidonia Montecelio (88673 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 2.1 2020-05-15
20:26:02		 42.6772 11.9573 10 2020-11-19
12:36:58		 Bollettino Sismico Italiano INGV 82240071
Reviewed
Rev100 		ML 2.1 2020-05-15
20:26:02		 42.6728 11.959 11 2020-05-15
20:31:53		 Sala Sismica INGV-Roma 79172981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-15 20:26:02 ± 0.07
Latitude 42.6772 ± 0.0036
Longitude 11.9573 ± 0.0049
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 82240071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 439
Semi-minor axis of confidence ellipse (meter) 268
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 9
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 45
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.12950
Epicentral distance of station farthest from the epicenter (degree) 1.06030
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 82240071
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-22 14:50:40

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 79172981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-15 20:31:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATMI.HHZ. 2020-05-15T20:26:26.22 1.0 undecidable manual S 19 77.1672 50 0.52 21
IV.EL6.EHZ. 2020-05-15T20:26:22.18 0.6 undecidable manual P 52 117.6933 50 0.09 42
IV.SRES.HHN. 2020-05-15T20:26:22.69 0.6 undecidable manual S 137 66.5778 50 -0.19 45
IV.PIEI.HHZ. 2020-05-15T20:26:20.53 0.6 undecidable manual P 26 106.116 50 0.23 42
IV.FDMO.HHZ. 2020-05-15T20:26:19.39 0.6 undecidable manual P 66 100.122 50 0 44
IV.RM33.EHZ. 2020-05-15T20:26:19.76 0.6 undecidable manual P 100 104.3178 50 -0.28 41
IV.MOMA.HHZ. 2020-05-15T20:26:19.05 0.6 undecidable manual S 74 51.9036 50 0.09 47
IV.ATPI.EHZ. 2020-05-15T20:26:18.73 1.0 undecidable manual P 23 93.0402 50 0.43 20
IV.BARO.EHZ. 2020-05-15T20:26:18.00 0.6 undecidable manual S 171 48.2184 50 0.02 48
IV.CESI.HHZ. 2020-05-15T20:26:17.28 0.3 undecidable manual P 64 85.248 50 0.2 65
IV.ATVO.HHZ. 2020-05-15T20:26:17.54 0.1 negative manual P 25 86.247 50 0.29 85
IV.ARCI.HHZ. 2020-05-15T20:26:17.72 0.6 undecidable manual S 296 43.7229 50 0.93 37
IV.ATCC.EHE. 2020-05-15T20:26:16.28 0.3 undecidable manual P 44 79.0653 50 0.15 67
IV.RIBO.EHZ. 2020-05-15T20:26:16.81 0.6 undecidable manual P 292 80.0643 50 0.53 41
IV.MURB.HHZ. 2020-05-15T20:26:16.51 0.3 undecidable manual P 35 79.6647 50 0.28 65
IV.ATMI.HHZ. 2020-05-15T20:26:16.53 0.6 undecidable manual P 19 77.1672 50 0.69 38
IV.MAON.HHZ. 2020-05-15T20:26:15.91 0.3 undecidable manual P 248 72.9714 50 0.71 58
IV.ASSB.HHZ. 2020-05-15T20:26:14.67 0.3 undecidable manual P 54 69.9744 50 -0.06 69
IV.SRES.HHN. 2020-05-15T20:26:14.65 0.6 undecidable manual P 137 66.5778 50 0.44 43
IV.ARRO.EHZ. 2020-05-15T20:26:14.36 0.3 undecidable manual P 99 66.8775 50 0.1 69
IV.ATTE.HHZ. 2020-05-15T20:26:14.38 0.3 undecidable manual P 29 66.0894 50 0.24 67
TV.SF01.EHZ. 2020-05-15T20:26:14.68 0.6 undecidable manual S 295 35.4423 50 0.12 49
TV.SF11.HHE. 2020-05-15T20:26:13.15 0.6 undecidable manual S 313 31.0467 50 -0.25 48
IV.TOLF.HHZ. 2020-05-15T20:26:13.94 0.3 undecidable manual P 177 68.0763 50 -0.51 63
TV.SF14.HHE. 2020-05-15T20:26:12.51 0.6 undecidable manual S 287 29.2485 50 -0.41 46
TV.SF03.EHN. 2020-05-15T20:26:12.21 0.3 undecidable manual S 302 26.1516 111 0.15 74
TV.SF04.EHZ. 2020-05-15T20:26:12.94 0.6 undecidable manual S 306 29.8479 50 -0.15 49
IV.MGAB.HHZ. 2020-05-15T20:26:12.65 0.6 undecidable manual S 26 29.0487 50 -0.2 48
IT.GNU.HGE. 2020-05-15T20:26:12.39 0.6 undecidable manual P 74 51.9036 50 0.44 44
IV.CESX.HHZ. 2020-05-15T20:26:11.44 1.0 undecidable manual P 98 51.9036 50 -0.52 22
IV.MCIV.CHZ. 2020-05-15T20:26:11.31 0.6 undecidable manual S 296 25.4523 111 -0.53 45
IV.MOMA.HHZ. 2020-05-15T20:26:11.43 0.3 undecidable manual P 74 51.9036 50 -0.51 65
IV.BARO.EHZ. 2020-05-15T20:26:11.05 0.1 positive manual P 171 48.2184 50 -0.34 91
IV.ARCI.HHZ. 2020-05-15T20:26:10.77 0.3 undecidable manual P 296 43.7229 50 0.08 72
TV.SF01.EHZ. 2020-05-15T20:26:09.36 0.1 undecidable manual P 295 35.4423 50 -0.05 99
IV.SACS.HHZ. 2020-05-15T20:26:09.83 0.3 undecidable manual S 349 19.4694 117 -0.1 75
IV.LATE.HHZ. 2020-05-15T20:26:08.70 0.3 undecidable manual S 241 14.3745 124 0.31 73
TV.SF04.EHZ. 2020-05-15T20:26:08.37 0.1 positive manual P 306 29.8479 50 -0.19 97
TV.SF11.HHE. 2020-05-15T20:26:08.54 0.1 positive manual P 313 31.0467 50 -0.2 96
TV.SF14.HHE. 2020-05-15T20:26:08.24 0.1 positive manual P 287 29.2485 50 -0.21 96
TV.SF03.EHN. 2020-05-15T20:26:07.76 0.1 positive manual P 302 26.1516 111 -0.2 97
IV.MGAB.HHZ. 2020-05-15T20:26:07.89 0.1 positive manual P 26 29.0487 50 -0.53 90
IV.MCIV.CHZ. 2020-05-15T20:26:07.74 0.3 undecidable manual P 296 25.4523 111 -0.1 74
IV.SACS.HHZ. 2020-05-15T20:26:06.62 0.1 positive manual P 349 19.4694 117 -0.11 100
IV.LATE.HHZ. 2020-05-15T20:26:06.09 0.1 positive manual P 241 14.3745 124 0.25 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SACS.HHN. ML:2.4 0.00217 0.94 AML other m 2020-05-15T20:26:10.17
IV.SACS.HNE. ML:2.5 0.002585 0.58 AML other m 2020-05-15T20:26:10.34
IV.SACS.HHE. ML:2.5 0.0024649999999999997 0.6 AML other m 2020-05-15T20:26:10.34
IV.LATE.HHN. ML:2.6 0.0037 0.6 AML other m 2020-05-15T20:26:13.80
IV.MGAB.HHN. ML:2.4 0.0013250000000000002 0.66 AML other m 2020-05-15T20:26:13.68
IV.LATE.HHE. ML:2.3 0.0020350000000000004 1.66 AML other m 2020-05-15T20:26:13.11
IV.MCIV.CHN. ML:1.8 0.000395 0.14 AML other m 2020-05-15T20:26:14.18
TV.SF04.EHE. ML:2.1 0.0006515 1.16 AML other m 2020-05-15T20:26:14.24
IV.MCIV.CHE. ML:2.0 0.000571 1.06 AML other m 2020-05-15T20:26:14.54
IV.MGAB.HHE. ML:2.4 0.00117 0.24 AML other m 2020-05-15T20:26:15.09
IV.MGAB.HNN. ML:2.4 0.0012 1.04 AML other m 2020-05-15T20:26:15.23
IV.MGAB.HNE. ML:2.3 0.001034 0.9 AML other m 2020-05-15T20:26:16.93
TV.SF04.EHN. ML:2.1 0.0006815 0.2 AML other m 2020-05-15T20:26:18.06
TV.SF01.EHN. ML:2.0 0.000389 0.24 AML other m 2020-05-15T20:26:18.91
TV.SF01.EHE. ML:2.1 0.0004915000000000001 1.38 AML other m 2020-05-15T20:26:19.05
IV.BARO.EHE. ML:1.8 0.0001975 1.6 AML other m 2020-05-15T20:26:20.01
IV.ARCI.HHN. ML:1.6 0.0001075 0.66 AML other m 2020-05-15T20:26:20.84
IV.BARO.EHN. ML:1.9 0.00023299999999999997 0.28 AML other m 2020-05-15T20:26:20.87
IV.MOMA.HHN. ML:1.9 0.00019350000000000001 0.16 AML other m 2020-05-15T20:26:21.08
IV.ARCI.HHE. ML:1.5 0.00010395 0.98 AML other m 2020-05-15T20:26:21.23
IV.MOMA.HHE. ML:2.0 0.00026649999999999997 0.26 AML other m 2020-05-15T20:26:22.14
IV.CESX.HHE. ML:1.7 0.00011305000000000001 0.7 AML other m 2020-05-15T20:26:23.76
IV.ATTE.HHN. ML:2.2 0.00027100000000000003 0.88 AML other m 2020-05-15T20:26:26.57
IV.TOLF.HHN. ML:1.7 0.0000965 0.84 AML other m 2020-05-15T20:26:26.27
IV.TOLF.HHE. ML:1.8 0.00010499999999999999 1.4 AML other m 2020-05-15T20:26:27.25
IV.ARRO.EHN. ML:2.0 0.0001615 1.7 AML other m 2020-05-15T20:26:28.09
IV.ARRO.EHE. ML:1.8 0.000112 1.3 AML other m 2020-05-15T20:26:28.16
IV.ASSB.HHN. ML:1.8 0.000114 1.14 AML other m 2020-05-15T20:26:29.69
IV.ATTE.HHE. ML:2.1 0.0002405 1.24 AML other m 2020-05-15T20:26:29.88
IV.MURB.HNN. ML:2.7 0.0007015 0.26 AML other m 2020-05-15T20:26:29.85
IV.MURB.HHN. ML:2.7 0.000782 0.28 AML other m 2020-05-15T20:26:29.85
IV.ATMI.HHE. ML:2.5 0.0004775 0.54 AML other m 2020-05-15T20:26:30.35
IV.ATMI.HHN. ML:2.6 0.000558 0.28 AML other m 2020-05-15T20:26:30.36
IV.MURB.HNE. ML:2.7 0.000718 1.04 AML other m 2020-05-15T20:26:30.21
IV.ATVO.HHE. ML:2.1 0.000154 0.34 AML other m 2020-05-15T20:26:31.35
IV.ASSB.HHE. ML:1.8 0.00010063364999999999 0.32 AML other m 2020-05-15T20:26:32.28
IV.CESI.HHN. ML:1.8 0.00008625 1.58 AML other m 2020-05-15T20:26:32.99
IV.CESI.HHE. ML:1.8 0.00007250000000000001 1.66 AML other m 2020-05-15T20:26:33.85
IV.MURB.HHE. ML:2.8 0.0008385 1.7 AML other m 2020-05-15T20:26:33.90
IV.ATVO.HHN. ML:2.2 0.0001855 0.68 AML other m 2020-05-15T20:26:35.56
IV.ATPI.EHE. ML:2.0 0.00011649999999999999 0.44 AML other m 2020-05-15T20:26:36.00
IV.ATPI.EHN. ML:2.0 0.00010894999999999999 1.6 AML other m 2020-05-15T20:26:36.81
IV.PIEI.HHN. ML:1.8 0.00005915 0.36 AML other m 2020-05-15T20:26:37.65
IV.PIEI.HHE. ML:2.0 0.00009709999999999999 0.38 AML other m 2020-05-15T20:26:38.21
IV.FDMO.HHN. ML:1.9 0.00007455000000000001 0.9 AML other m 2020-05-15T20:26:39.20
IV.FDMO.HHE. ML:1.7 0.000049949999999999994 0.34 AML other m 2020-05-15T20:26:39.86
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