Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 16-05-2020 and time 16:42:28 (UTC) in region 3 km SW Castel Giorgio (TR)

A magnitude ML 1.5 earthquake occured in region: 3 km SW Castel Giorgio (TR), on

  • 16-05-2020 16:42:28 (UTC)
  • 16-05-2020 18:42:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6800, 11.9660 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
Bolsena VT 4 3991 6122
San Lorenzo Nuovo VT 5 2091 8213
Grotte di Castro VT 8 2683 10896
Castel Viscardo TR 9 2938 13834
Gradoli VT 10 1353 15187
Acquapendente VT 11 5506 20693
Porano TR 11 1966 22659
Onano VT 12 995 23654
Bagnoregio VT 12 3650 27304
Orvieto TR 13 20630 47934
Lubriano VT 13 909 48843
Latera VT 13 836 49679
Proceno VT 14 557 50236
Allerona TR 15 1794 52030
Capodimonte VT 15 1731 53761
Marta VT 16 3499 57260
Montefiascone VT 17 13432 70692
Valentano VT 17 2868 73560
Celleno VT 19 1355 74915
Ficulle TR 19 1669 76584
Castiglione in Teverina VT 20 2329 78913
Civitella d'Agliano VT 20 1640 80553

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Viterbo (67173 inhabitants)
57 Km W of Terni (111501 inhabitants)
59 Km SW of Perugia (166134 inhabitants)
67 Km N of Civitavecchia (52991 inhabitants)
68 Km W of Foligno (57155 inhabitants)
70 Km E of Grosseto (82087 inhabitants)
88 Km S of Arezzo (99543 inhabitants)
88 Km SE of Siena (53903 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 1.5 2020-05-16
16:42:28		 42.6797 11.9657 10 2020-11-19
12:37:00		 Bollettino Sismico Italiano INGV 82739021
Reviewed
Rev100 		ML 1.6 2020-05-16
16:42:28		 42.6733 11.987 10 2020-05-16
16:49:55		 Sala Sismica INGV-Roma 79205741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-16 16:42:28 ± 0.14
Latitude 42.6797 ± 0.0063
Longitude 11.9657 ± 0.0086
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 82739021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 683
Semi-minor axis of confidence ellipse (meter) 565
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 157
Circular confidence region, given by single value of horizontal uncertainty (meter) 680.0
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 48
Number of defining phases 29
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) 0.81568
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 82739021
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-08 15:22:55

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 79205741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-16 16:49:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CMPR.HHZ. 2020-05-16T16:44:11.17 3.0 undecidable manual Sg 24.370001 0
IV.CET2.HHZ. 2020-05-16T16:44:07.24 3.0 undecidable manual Sn -0.83 0
AC.VLO.HHZ. 2020-05-16T16:44:06.80 3.0 undecidable manual Pg 25.59 0
IV.EUCT.HNZ. 2020-05-16T16:43:54.35 3.0 undecidable manual Sg 5.43 0
ST.RONC.HNZ. 2020-05-16T16:43:42.64 3.0 undecidable manual Sn -9.99 0
IV.PTRJ.HHZ. 2020-05-16T16:43:41.69 3.0 undecidable manual Sg 19.809999 0
XK.GIZZ.HHZ. 2020-05-16T16:43:35.45 3.0 undecidable manual Pg 9.98 0
IV.PAOL.HHZ. 2020-05-16T16:43:33.65 3.0 undecidable manual Sn 6.86 0
XK.SELL.HHZ. 2020-05-16T16:43:24.82 3.0 negative manual Pn -3.48 0
IV.EUCT.HNZ. 2020-05-16T16:43:10.06 3.0 undecidable manual Pg 2.56 0
IV.ROSPO.HHZ. 2020-05-16T16:43:04.53 3.0 undecidable manual Pg 12.96 0
IV.NDIM.HHZ. 2020-05-16T16:43:01.84 3.0 positive manual Pg 6.04 0
GU.GENL.EHZ. 2020-05-16T16:43:00.89 3.0 negative manual Pn -0.69 0
IV.PTRJ.HHZ. 2020-05-16T16:43:00.46 3.0 undecidable manual Pg 8.15 0
IV.MTMR.HNZ. 2020-05-16T16:42:59.21 3.0 positive manual Pn 0.14 0
IV.RMP.HHZ. 2020-05-16T16:42:56.46 3.0 undecidable manual Sn -2.01 0
IV.MNTV.HNZ. 2020-05-16T16:42:53.56 3.0 positive manual Pn -5.61 0
IV.LRP.EHZ. 2020-05-16T16:42:52.65 3.0 undecidable manual Pg 8.5 0
IV.FERS.HNZ. 2020-05-16T16:42:50.16 3.0 negative manual Pn -4.29 0
IV.CASP.HHE. 2020-05-16T16:42:45.58 0.3 undecidable manual P 278 90.5427 50 1.11 46
IV.BARO.HNZ. 2020-05-16T16:42:44.21 0.6 undecidable manual S 172 48.4182 50 -0.36 44
IV.ATMI.HHZ. 2020-05-16T16:42:43.38 0.3 undecidable manual P 19 76.6677 50 1.05 48
IV.ATLO.EHE. 2020-05-16T16:42:43.27 0.3 undecidable manual P 27 79.0653 50 0.56 59
IV.ARCI.HHZ. 2020-05-16T16:42:43.94 0.6 undecidable manual S 296 44.2224 50 0.47 44
TV.SF01.EHZ. 2020-05-16T16:42:41.29 0.6 undecidable manual S 294 35.9418 50 0.04 48
IV.ATTE.HHN. 2020-05-16T16:42:40.92 0.1 undecidable manual P 29 65.5899 50 0.3 87
TV.SF13.HHN. 2020-05-16T16:42:40.19 0.6 undecidable manual S 299 32.1456 50 -0.04 49
IV.MGAB.HHZ. 2020-05-16T16:42:39.04 0.6 undecidable manual S 25 28.4493 50 -0.22 47
TV.SF14.HHN. 2020-05-16T16:42:39.30 0.6 undecidable manual S 286 29.8479 50 -0.31 46
TV.SF04.EHZ. 2020-05-16T16:42:39.76 0.6 undecidable manual S 305 30.2475 50 0.02 49
TV.SF11.HHZ. 2020-05-16T16:42:39.49 0.6 undecidable manual S 312 31.3464 50 -0.55 43
IV.ARCI.HHZ. 2020-05-16T16:42:38.02 0.3 undecidable manual P 296 44.2224 50 0.68 60
TV.SF03.EHN. 2020-05-16T16:42:38.29 0.6 undecidable manual S 301 26.5512 50 -0.47 45
IV.MCIV.CHZ. 2020-05-16T16:42:38.54 0.6 undecidable manual S 295 25.9518 50 -0.06 49
IV.MOMA.HHZ. 2020-05-16T16:42:38.19 0.3 undecidable manual P 74 51.1155 50 -0.21 68
IV.BARO.HNZ. 2020-05-16T16:42:37.92 0.3 undecidable manual P 172 48.4182 50 -0.05 71
TV.SF01.EHZ. 2020-05-16T16:42:36.24 0.3 undecidable manual P 294 35.9418 50 0.19 70
IV.SACS.HHZ. 2020-05-16T16:42:36.49 0.3 undecidable manual S 346 19.3695 117 -0.02 75
TV.SF13.HHN. 2020-05-16T16:42:36.07 0.3 undecidable manual P 299 32.1456 50 0.6 64
TV.SF11.HHZ. 2020-05-16T16:42:35.12 0.3 undecidable manual P 312 31.3464 50 -0.23 70
IV.LATE.HHZ. 2020-05-16T16:42:35.28 0.6 undecidable manual S 241 15.0738 123 0.05 50
TV.SF04.EHZ. 2020-05-16T16:42:34.96 0.1 undecidable manual P 305 30.2475 50 -0.22 94
TV.SF03.EHN. 2020-05-16T16:42:34.31 0.3 undecidable manual P 301 26.5512 50 -0.31 70
IV.MGAB.HHZ. 2020-05-16T16:42:34.24 0.1 positive manual P 25 28.4493 50 -0.67 83
TV.SF14.HHN. 2020-05-16T16:42:34.88 0.1 undecidable manual P 286 29.8479 50 -0.23 94
IV.MCIV.CHZ. 2020-05-16T16:42:34.46 0.3 undecidable manual P 295 25.9518 50 -0.06 74
IV.SACS.HHZ. 2020-05-16T16:42:33.07 0.1 positive manual P 346 19.3695 117 -0.25 95
IV.LATE.HHZ. 2020-05-16T16:42:32.52 0.1 positive manual P 241 15.0738 123 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATMI.HHE. ML:0.0 0.000105770635 0.3328 AML other m 2020-05-16T16:42:56.72
IV.ATMI.HHN. ML:0.0 0.00007690022 0.6144 AML other m 2020-05-16T16:42:58.97
IV.LATE.HHN. ML:1.7 0.00049757965 0.2432 AML other m 2020-05-16T16:42:39.78
IV.LATE.HHE. ML:1.7 0.0005425046 0.2944 AML other m 2020-05-16T16:42:38.21
IV.SACS.HHE. ML:1.6 0.0003107822 0.1792 AML other m 2020-05-16T16:42:37.19
IV.SACS.HNN. ML:1.4 0.00020382241499999998 0.1792 AML other m 2020-05-16T16:42:36.71
IV.SACS.HHN. ML:1.4 0.00020197265 0.1664 AML other m 2020-05-16T16:42:36.71
IV.SACS.HNE. ML:1.6 0.00033695445000000003 0.1664 AML other m 2020-05-16T16:42:37.18
IV.MGAB.HNN. ML:1.6 0.00021208535 0.1408 AML other m 2020-05-16T16:42:40.73
IV.MGAB.HHN. ML:1.7 0.00024359484999999996 0.2944 AML other m 2020-05-16T16:42:42.30
IV.MGAB.HHE. ML:1.6 0.0001998577 0.2816 AML other m 2020-05-16T16:42:39.94
IV.MGAB.HNE. ML:1.6 0.00020300469999999998 0.3584 AML other m 2020-05-16T16:42:43.61
IV.MCIV.CHE. ML:1.3 0.00010679109000000001 0.3712 AML other m 2020-05-16T16:42:41.22
IV.MCIV.CHN. ML:1.2 0.00008484667999999999 0.2816 AML other m 2020-05-16T16:42:39.75
TV.SF04.EHE. ML:1.6 0.00016760875 0.192 AML other m 2020-05-16T16:42:40.13
TV.SF04.EHN. ML:1.6 0.00018496580000000002 0.1664 AML other m 2020-05-16T16:42:40.65
TV.SF01.EHE. ML:1.4 0.000093838685 0.256 AML other m 2020-05-16T16:42:42.68
TV.SF01.EHN. ML:1.4 0.00008946472500000001 0.4864 AML other m 2020-05-16T16:42:47.51
IV.MOMA.HHN. ML:1.2 0.00003832258 0.384 AML other m 2020-05-16T16:42:50.26
IV.MOMA.HHE. ML:1.4 0.00005820251 0.32 AML other m 2020-05-16T16:42:48.80
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