Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 16-05-2020 and time 04:59:38 (UTC) in region 3 km E San Lorenzo Nuovo (VT)

A magnitude ML 1.7 earthquake occured in region: 3 km E San Lorenzo Nuovo (VT), on

  • 16-05-2020 04:59:38 (UTC)
  • 16-05-2020 06:59:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6850, 11.9390 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
San Lorenzo Nuovo VT 3 2091 2091
Castel Giorgio TR 4 2131 4222
Grotte di Castro VT 6 2683 6905
Bolsena VT 6 3991 10896
Gradoli VT 8 1353 12249
Acquapendente VT 9 5506 17755
Castel Viscardo TR 10 2938 20693
Onano VT 10 995 21688
Latera VT 11 836 22524
Proceno VT 12 557 23081
Porano TR 13 1966 25047
Orvieto TR 14 20630 45677
Allerona TR 15 1794 47471
Bagnoregio VT 15 3650 51121
Lubriano VT 15 909 52030
Capodimonte VT 15 1731 53761
Valentano VT 16 2868 56629
Marta VT 17 3499 60128
Montefiascone VT 18 13432 73560
Sorano GR 18 3428 76988
Ficulle TR 20 1669 78657

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of Viterbo (67173 inhabitants)
60 Km W of Terni (111501 inhabitants)
60 Km SW of Perugia (166134 inhabitants)
67 Km N of Civitavecchia (52991 inhabitants)
68 Km E of Grosseto (82087 inhabitants)
69 Km W of Foligno (57155 inhabitants)
86 Km SE of Siena (53903 inhabitants)
87 Km S of Arezzo (99543 inhabitants)
99 Km NW of Roma (2864731 inhabitants)
100 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 1.7 2020-05-16
04:59:38		 42.6848 11.9393 10 2020-11-19
12:36:59		 Bollettino Sismico Italiano INGV 82533751
Reviewed
Rev100 		ML 1.7 2020-05-16
04:59:37		 42.6817 11.9488 10 2020-05-16
05:05:48		 Sala Sismica INGV-Roma 79190691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-16 04:59:38 ± 0.09
Latitude 42.6848 ± 0.0045
Longitude 11.9393 ± 0.0061
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 82533751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 478
Semi-minor axis of confidence ellipse (meter) 354
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 359
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.12231
Epicentral distance of station farthest from the epicenter (degree) 0.88853
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 82533751
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-01 14:15:19

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 79190691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-16 05:05:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATPC.HHE. 2020-05-16T04:59:55.44 0.6 undecidable manual P 25 97.7244 50 0.77 35
IV.MOMA.HHZ. 2020-05-16T04:59:55.12 0.6 undecidable manual S 75 53.0025 50 0.22 45
IV.MTCE.HHZ. 2020-05-16T04:59:55.44 0.3 undecidable manual P 138 98.6235 50 0.63 55
IV.CASP.HHE. 2020-05-16T04:59:54.45 0.6 undecidable manual P 278 88.3449 50 1.23 29
IV.ATPI.EHE. 2020-05-16T04:59:54.40 0.3 undecidable manual P 24 92.8404 50 0.48 59
IV.BARO.EHZ. 2020-05-16T04:59:53.54 0.3 undecidable manual S 169 49.3173 50 -0.36 66
IV.TB01.DHZ.01 2020-05-16T04:59:53.23 0.3 undecidable manual P 27 87.1461 50 0.19 63
IV.ATVO.HHZ. 2020-05-16T04:59:53.04 0.1 negative manual P 26 86.1471 50 0.16 85
IV.ARCI.HHZ. 2020-05-16T04:59:52.19 0.6 undecidable manual S 296 42.1245 50 0.22 46
IV.ATCC.EHE. 2020-05-16T04:59:52.30 0.6 undecidable manual P 45 79.4649 50 0.44 41
IV.MAON.HHZ. 2020-05-16T04:59:51.62 0.3 undecidable manual P 247 71.9724 50 0.93 51
IV.ATLO.EHE. 2020-05-16T04:59:51.97 0.3 undecidable manual P 28 79.5648 50 0.1 66
IV.MURB.HHZ. 2020-05-16T04:59:51.82 0.6 undecidable manual P 36 79.8645 50 -0.09 44
IV.SRES.HHN. 2020-05-16T04:59:50.75 0.3 undecidable manual P 137 68.1762 50 0.63 58
IV.ATTE.HHZ. 2020-05-16T04:59:49.51 0.3 undecidable manual P 30 66.0894 50 -0.29 65
TV.SF01.EHZ. 2020-05-16T04:59:49.93 0.3 undecidable manual S 295 33.744 50 0.2 70
IV.TOLF.HHN. 2020-05-16T04:59:49.54 0.3 undecidable manual P 176 69.0753 50 -0.71 57
TV.SF13.HHN. 2020-05-16T04:59:48.58 0.6 undecidable manual S 300 29.9478 50 -0.15 47
IV.MGAB.HHZ. 2020-05-16T04:59:48.17 0.6 undecidable manual S 29 28.9488 50 -0.28 46
TV.SF11.HHZ. 2020-05-16T04:59:48.19 0.6 undecidable manual S 314 29.4483 50 -0.39 45
TV.SF14.HHN. 2020-05-16T04:59:48.33 0.6 undecidable manual S 287 27.5502 50 0.23 47
IV.CESX.HHE. 2020-05-16T04:59:47.87 0.6 undecidable manual P 99 53.502 50 0.02 47
TV.SF04.EHZ. 2020-05-16T04:59:47.95 0.3 undecidable manual S 306 28.2495 50 -0.31 69
TV.SF03.EHN. 2020-05-16T04:59:47.14 0.6 undecidable manual S 302 24.4533 113 -0.12 48
IV.MOMA.HHZ. 2020-05-16T04:59:47.44 0.3 undecidable manual P 75 53.0025 50 -0.34 65
IV.MCIV.CHZ. 2020-05-16T04:59:46.86 0.3 undecidable manual S 296 23.754 113 -0.19 71
IV.BARO.EHZ. 2020-05-16T04:59:46.66 0.1 negative manual P 169 49.3173 50 -0.55 83
IV.ARCI.HHZ. 2020-05-16T04:59:46.22 0.3 undecidable manual P 296 42.1245 50 0.13 70
IV.SACS.HHZ. 2020-05-16T04:59:45.47 0.3 undecidable manual S 352 18.3705 119 0.12 73
TV.SF01.EHZ. 2020-05-16T04:59:44.95 0.3 undecidable manual P 295 33.744 50 0.14 71
TV.SF13.HHN. 2020-05-16T04:59:44.26 0.3 undecidable manual P 300 29.9478 50 0.03 73
TV.SF14.HHN. 2020-05-16T04:59:43.76 0.1 negative manual P 287 27.5502 50 -0.1 96
IV.MCIV.CHZ. 2020-05-16T04:59:43.35 0.1 undecidable manual P 296 23.754 113 0.09 97
IV.LATE.HHZ. 2020-05-16T04:59:43.99 0.3 undecidable manual S 234 13.5753 127 0.04 75
IV.MGAB.HHZ. 2020-05-16T04:59:43.45 0.1 positive manual P 29 28.9488 50 -0.62 84
TV.SF11.HHZ. 2020-05-16T04:59:43.93 0.3 undecidable manual P 314 29.4483 50 -0.21 70
TV.SF04.EHZ. 2020-05-16T04:59:43.72 0.1 undecidable manual P 306 28.2495 50 -0.23 93
TV.SF03.EHN. 2020-05-16T04:59:43.29 0.3 undecidable manual P 302 24.4533 113 -0.09 73
IV.SACS.HHZ. 2020-05-16T04:59:42.13 0.1 positive manual P 352 18.3705 119 -0.15 97
IV.LATE.HHZ. 2020-05-16T04:59:41.49 0.1 positive manual P 234 13.5753 127 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BARO.EHE. ML:0.0 0.00007412469999999999 0.24 AML other m 2020-05-16T04:59:54.20
IV.BARO.EHN. ML:0.0 0.00008013829999999999 0.3584 AML other m 2020-05-16T04:59:56.44
IV.LATE.HHN. ML:1.9 0.0008665411 0.2208 AML other m 2020-05-16T04:59:48.56
IV.LATE.HHE. ML:1.7 0.0005644171 0.1792 AML other m 2020-05-16T04:59:46.68
IV.SACS.HHE. ML:1.9 0.0007416986000000001 0.4192 AML other m 2020-05-16T04:59:45.78
IV.SACS.HNN. ML:1.5 0.00024779532999999996 0.1792 AML other m 2020-05-16T04:59:45.88
IV.SACS.HHN. ML:1.6 0.00032680575 0.1984 AML other m 2020-05-16T04:59:45.88
IV.SACS.HNE. ML:1.9 0.00074397 0.4192 AML other m 2020-05-16T04:59:45.78
IV.MCIV.CHE. ML:1.2 0.000101308255 0.1024 AML other m 2020-05-16T04:59:48.15
IV.MCIV.CHN. ML:1.4 0.0001430107 0.224 AML other m 2020-05-16T04:59:48.74
IV.MGAB.HHN. ML:1.7 0.00023730335000000003 0.24 AML other m 2020-05-16T04:59:48.73
IV.MGAB.HHE. ML:1.7 0.00027505935 0.32 AML other m 2020-05-16T04:59:49.27
IV.MGAB.HNE. ML:1.8 0.00030225829999999996 0.32 AML other m 2020-05-16T04:59:49.27
IV.MGAB.HNN. ML:1.6 0.00020668635000000002 0.2592 AML other m 2020-05-16T04:59:48.73
TV.SF04.EHE. ML:1.6 0.0002180998 0.16 AML other m 2020-05-16T04:59:48.76
TV.SF04.EHN. ML:1.7 0.0002667336 0.1408 AML other m 2020-05-16T04:59:48.98
TV.SF01.EHE. ML:1.4 0.000098069735 0.1792 AML other m 2020-05-16T04:59:50.88
TV.SF01.EHN. ML:1.5 0.00012313794 0.1408 AML other m 2020-05-16T04:59:50.88
IV.BARO.HNE. ML:1.6 0.00010898045000000001 0.3808 AML other m 2020-05-16T04:59:57.56
IV.MOMA.HNE. ML:1.8 0.000132897615 0.2176 AML other m 2020-05-16T04:59:56.70
IV.MOMA.HHN. ML:1.6 0.00008907672 0.2176 AML other m 2020-05-16T04:59:56.52
IV.MOMA.HHE. ML:1.7 0.00011071785000000001 0.24 AML other m 2020-05-16T04:59:56.81
IV.ATTE.HHE. ML:1.5 0.000059586009999999996 0.2208 AML other m 2020-05-16T05:00:02.71
IV.ATTE.HHN. ML:1.5 0.000056759665 0.3808 AML other m 2020-05-16T05:00:03.01
IV.MURB.HNN. ML:2.2 0.00023372239999999998 0.32 AML other m 2020-05-16T05:00:06.91
IV.MURB.HHE. ML:2.1 0.00017224234999999998 0.24 AML other m 2020-05-16T05:00:07.67
IV.MURB.HNE. ML:2.2 0.00021071715000000002 0.2816 AML other m 2020-05-16T05:00:08.41
IV.MURB.HHN. ML:2.2 0.00022864115000000002 0.24 AML other m 2020-05-16T05:00:08.43
IV.ATVO.HHE. ML:1.6 0.00004454491 0.3392 AML other m 2020-05-16T05:00:07.80
IV.ATVO.HHN. ML:1.6 0.00004283115 0.5408 AML other m 2020-05-16T05:00:10.20
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