Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 16-05-2020 and time 03:11:45 (UTC) in region 3 km E San Lorenzo Nuovo (VT)

A magnitude ML 1.6 earthquake occured in region: 3 km E San Lorenzo Nuovo (VT), on

  • 16-05-2020 03:11:45 (UTC)
  • 16-05-2020 05:11:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6820, 11.9420 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
Bolsena VT 6 3991 8213
Grotte di Castro VT 6 2683 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
Bagnoregio VT 14 3650 49327
Lubriano VT 15 909 50236
Allerona TR 15 1794 52030
Capodimonte VT 15 1731 53761
Valentano VT 16 2868 56629
Marta VT 16 3499 60128
Montefiascone VT 18 13432 73560
Sorano GR 19 3428 76988

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of Viterbo (67173 inhabitants)
59 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)
98 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 1.6 2020-05-16
03:11:45		 42.6823 11.942 10 2020-11-19
12:36:59		 Bollettino Sismico Italiano INGV 82405651
Reviewed
Rev100 		ML 1.7 2020-05-16
03:11:45		 42.6787 11.9447 10 2020-05-16
03:19:10		 Sala Sismica INGV-Roma 79186451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-16 03:11:45 ± 0.09
Latitude 42.6823 ± 0.0045
Longitude 11.9420 ± 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 82405651

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 497
Semi-minor axis of confidence ellipse (meter) 211
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 15
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
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) 0.94249
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 33
Type of magnitude ML
Reference to an origin 82405651
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-28 10:58:38

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 29
Type of magnitude ML
Reference to an origin 79186451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-16 03:19:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TOLF.HHZ. 2020-05-16T03:12:06.98 0.6 undecidable manual S 176 68.7756 50 0.13 45
IV.APEC.HHZ. 2020-05-16T03:12:04.07 0.3 undecidable manual P 22 104.6175 50 0.57 57
IV.MOMA.HHZ. 2020-05-16T03:12:02.93 0.3 undecidable manual S 75 52.9026 50 0.31 67
IV.CASP.HHE. 2020-05-16T03:12:02.37 0.3 undecidable manual P 278 88.5447 50 1.35 41
IV.BARO.EHZ. 2020-05-16T03:12:01.20 0.3 undecidable manual S 169 49.0176 50 -0.38 67
IV.ATFO.HHZ. 2020-05-16T03:12:01.70 0.6 undecidable manual P 34 91.4418 50 0.23 42
IV.MURB.HHZ. 2020-05-16T03:11:59.76 0.3 undecidable manual P 36 79.9644 50 0.07 67
IV.ATMI.HHZ. 2020-05-16T03:11:59.35 0.6 undecidable manual P 20 76.9674 50 0.11 45
IV.ATCC.EHE. 2020-05-16T03:11:59.68 0.6 undecidable manual P 45 79.5648 50 0.05 45
IV.MAON.HHZ. 2020-05-16T03:11:59.42 0.3 undecidable manual P 247 71.9724 50 0.95 52
IV.ATLO.EHE. 2020-05-16T03:11:59.58 0.3 undecidable manual P 28 79.6647 50 -0.08 67
IV.ARCI.HHZ. 2020-05-16T03:11:59.95 0.6 undecidable manual S 297 42.4242 50 0.14 47
IV.ARRO.EHZ. 2020-05-16T03:11:58.30 0.3 undecidable manual P 99 68.1762 50 0.42 64
IV.ASSB.HHN. 2020-05-16T03:11:58.60 0.6 undecidable manual P 55 70.6737 50 0.34 43
TV.SF01.EHZ. 2020-05-16T03:11:57.86 0.6 undecidable manual S 295 34.0437 50 0.28 47
IV.TOLF.HHZ. 2020-05-16T03:11:57.45 0.1 undecidable manual P 176 68.7756 50 -0.52 83
IV.MGAB.HHZ. 2020-05-16T03:11:56.09 0.3 undecidable manual S 28 29.0487 50 -0.17 72
TV.SF14.HHN. 2020-05-16T03:11:56.01 0.6 undecidable manual S 287 27.8499 50 0.07 49
TV.SF11.HHZ. 2020-05-16T03:11:56.07 0.6 undecidable manual S 314 29.748 50 -0.37 46
TV.SF13.HHN. 2020-05-16T03:11:56.27 0.3 undecidable manual S 300 30.3474 50 -0.31 70
IV.CESX.HHE. 2020-05-16T03:11:55.93 0.6 undecidable manual P 99 53.2023 50 0.35 44
TV.SF04.EHZ. 2020-05-16T03:11:55.89 0.3 undecidable manual S 307 28.5492 50 -0.23 71
IV.MOMA.HHZ. 2020-05-16T03:11:55.23 0.1 positive manual P 75 52.9026 50 -0.3 90
IV.ARCI.HHZ. 2020-05-16T03:11:54.20 0.3 undecidable manual P 297 42.4242 50 0.29 69
TV.SF03.EHN. 2020-05-16T03:11:54.99 0.6 undecidable manual S 303 24.753 50 -0.13 49
IV.MCIV.CHZ. 2020-05-16T03:11:54.42 0.3 undecidable manual S 296 24.1536 113 -0.51 68
IV.BARO.EHZ. 2020-05-16T03:11:54.44 0.1 undecidable manual P 169 49.0176 50 -0.49 87
IV.SACS.HHZ. 2020-05-16T03:11:53.26 0.3 undecidable manual S 352 18.6702 119 0.04 76
TV.SF01.EHZ. 2020-05-16T03:11:52.99 0.3 undecidable manual P 295 34.0437 50 0.37 69
TV.SF04.EHZ. 2020-05-16T03:11:51.69 0.1 undecidable manual P 307 28.5492 50 -0.08 98
TV.SF13.HHN. 2020-05-16T03:11:51.87 0.1 positive manual P 300 30.3474 50 -0.17 96
IV.MGAB.HHZ. 2020-05-16T03:11:51.29 0.1 positive manual P 28 29.0487 50 -0.56 88
TV.SF14.HHN. 2020-05-16T03:11:51.67 0.1 undecidable manual P 287 27.8499 50 0 100
IV.LATE.HHZ. 2020-05-16T03:11:51.86 0.6 undecidable manual S 236 13.5753 127 0.13 50
TV.SF03.EHN. 2020-05-16T03:11:51.20 0.3 undecidable manual P 303 24.753 50 0 75
IV.MCIV.CHZ. 2020-05-16T03:11:51.19 0.3 undecidable manual P 296 24.1536 113 0.1 74
TV.SF11.HHZ. 2020-05-16T03:11:51.95 0.3 undecidable manual P 314 29.748 50 -0.01 75
IV.LATE.HHZ. 2020-05-16T03:11:49.36 0.1 positive manual P 236 13.5753 127 0.12 100
IV.SACS.HHZ. 2020-05-16T03:11:49.96 0.1 positive manual P 352 18.6702 119 -0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TOLF.HHN. ML:0.0 0.000048732465000000006 1.5584 AML other m 2020-05-16T03:12:08.15
IV.TOLF.HHE. ML:0.0 0.000042959039999999996 0.4592 AML other m 2020-05-16T03:12:12.75
IV.LATE.HHN. ML:1.9 0.0008932181999999999 0.2608 AML other m 2020-05-16T03:11:56.44
IV.LATE.HHE. ML:1.8 0.0006593747 0.36 AML other m 2020-05-16T03:11:55.29
IV.SACS.HHE. ML:1.9 0.0006660140500000001 0.4384 AML other m 2020-05-16T03:11:53.60
IV.SACS.HNN. ML:1.5 0.00022343615 0.2096 AML other m 2020-05-16T03:11:54.55
IV.SACS.HHN. ML:1.5 0.00023643494999999996 0.2416 AML other m 2020-05-16T03:11:55.02
IV.SACS.HNE. ML:1.9 0.0006543546999999999 0.4288 AML other m 2020-05-16T03:11:53.60
IV.MCIV.CHE. ML:1.1 0.00008016753 0.224 AML other m 2020-05-16T03:11:55.59
IV.MCIV.CHN. ML:1.2 0.000084262015 0.216 AML other m 2020-05-16T03:11:56.47
IV.MGAB.HHN. ML:1.7 0.00027273025000000003 0.16 AML other m 2020-05-16T03:11:58.06
IV.MGAB.HHE. ML:1.8 0.00034593564999999996 0.2208 AML other m 2020-05-16T03:11:58.19
IV.MGAB.HNE. ML:1.8 0.00034813834999999996 0.2208 AML other m 2020-05-16T03:11:58.19
IV.MGAB.HNN. ML:1.7 0.0002442714 0.1792 AML other m 2020-05-16T03:11:58.77
TV.SF04.EHE. ML:1.6 0.0002246556 0.16 AML other m 2020-05-16T03:11:58.80
TV.SF04.EHN. ML:1.6 0.00020536064999999998 0.1792 AML other m 2020-05-16T03:11:57.53
TV.SF01.EHE. ML:1.3 0.00008689483 0.2 AML other m 2020-05-16T03:12:00.41
TV.SF01.EHN. ML:1.3 0.000087476155 0.1792 AML other m 2020-05-16T03:11:59.75
IV.BARO.EHE. ML:1.5 0.000079698715 0.1408 AML other m 2020-05-16T03:12:02.29
IV.BARO.EHN. ML:1.6 0.00009709204 0.3408 AML other m 2020-05-16T03:12:04.28
IV.MOMA.HNN. ML:1.8 0.0001549751 0.5104 AML other m 2020-05-16T03:12:06.07
IV.MOMA.HHN. ML:1.6 0.00009910856 0.2192 AML other m 2020-05-16T03:12:04.31
IV.MOMA.HHE. ML:1.6 0.00009353642000000001 0.2608 AML other m 2020-05-16T03:12:04.47
IV.ARRO.EHE. ML:1.2 0.000031663055 0.36 AML other m 2020-05-16T03:12:10.31
IV.ARRO.EHN. ML:1.2 0.000030897339999999996 0.3792 AML other m 2020-05-16T03:12:15.09
IV.MURB.HNN. ML:2.3 0.00026844205 0.3296 AML other m 2020-05-16T03:12:14.53
IV.MURB.HHN. ML:2.3 0.00028776305000000003 0.28 AML other m 2020-05-16T03:12:14.53
IV.MURB.HNE. ML:2.2 0.00023753999999999998 0.32 AML other m 2020-05-16T03:12:14.22
IV.MURB.HHE. ML:2.1 0.00019131324999999998 0.32 AML other m 2020-05-16T03:12:14.21
IV.ATFO.HHN. ML:1.6 0.0000523749 0.56 AML other m 2020-05-16T03:12:16.51
IV.ATFO.HHE. ML:1.7 0.000054316165 0.96 AML other m 2020-05-16T03:12:17.08
IV.APEC.HHN. ML:1.5 0.000027621995 0.7808 AML other m 2020-05-16T03:12:19.43
IV.APEC.HHE. ML:1.5 0.000030376340000000002 0.9184 AML other m 2020-05-16T03:12:27.07
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