Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 16-05-2020 and time 06:34:25 (Italy) in region 3 km E San Lorenzo Nuovo (VT)

A magnitude ML 1.4 earthquake occured in region: 3 km E San Lorenzo Nuovo (VT), on

  • 16-05-2020 04:34:25 (UTC)
  • 16-05-2020 06:34:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6820, 11.9450 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 5 3991 8213
Grotte di Castro VT 6 2683 10896
Gradoli VT 8 1353 12249
Acquapendente VT 10 5506 17755
Castel Viscardo TR 10 2938 20693
Onano VT 11 995 21688
Latera VT 11 836 22524
Proceno VT 13 557 23081
Porano TR 13 1966 25047
Bagnoregio VT 14 3650 28697
Orvieto TR 14 20630 49327
Lubriano VT 14 909 50236
Allerona TR 15 1794 52030
Capodimonte VT 15 1731 53761
Valentano VT 16 2868 56629
Marta VT 16 3499 60128
Montefiascone VT 17 13432 73560
Sorano GR 19 3428 76988
Ficulle TR 20 1669 78657

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)
87 Km SE of Siena (53903 inhabitants)
88 Km S of Arezzo (99543 inhabitants)
98 Km NW of Roma (2864731 inhabitants)
99 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 1.4 2020-05-16
04:34:25		 42.6817 11.9447 11 2020-11-19
12:36:59		 Bollettino Sismico Italiano INGV 82533631
Reviewed
Rev100 		ML 1.5 2020-05-16
04:34:25		 42.6797 11.9602 10 2020-05-16
04:43:15		 Sala Sismica INGV-Roma 79190101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-16 04:34:25 ± 0.09
Latitude 42.6817 ± 0.0045
Longitude 11.9447 ± 0.0049
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 82533631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 453
Semi-minor axis of confidence ellipse (meter) 251
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 182
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
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) 0.12321
Epicentral distance of station farthest from the epicenter (degree) 0.71946
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 82533631
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-01 14:01:26

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 79190101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-16 04:43:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOMA.HNZ. 2020-05-16T04:34:42.64 0.6 undecidable manual S 75 52.7028 50 0.38 43
IV.BARO.EHZ. 2020-05-16T04:34:40.93 0.6 undecidable manual S 170 48.9177 50 -0.31 44
IV.ARCI.HHZ. 2020-05-16T04:34:40.23 0.6 undecidable manual S 296 42.624 50 0.67 40
IV.MURB.HHE. 2020-05-16T04:34:39.40 0.3 undecidable manual P 36 79.8645 50 0 67
IV.ATCC.EHE. 2020-05-16T04:34:39.34 0.6 undecidable manual P 45 79.4649 50 0.01 44
IV.ASSB.HHN. 2020-05-16T04:34:39.08 0.6 undecidable manual P 55 70.5738 50 1.12 31
IV.ATLO.EHE. 2020-05-16T04:34:39.37 0.3 undecidable manual P 28 79.6647 50 0 67
IV.ATTE.HHZ. 2020-05-16T04:34:37.40 0.3 undecidable manual P 30 66.1893 50 0.11 67
TV.SF01.EHZ. 2020-05-16T04:34:37.54 0.3 undecidable manual S 295 34.2435 50 0.21 70
IV.TOLF.HHN. 2020-05-16T04:34:37.32 1.0 undecidable manual P 176 68.6757 50 -0.35 21
IV.CESX.HHE. 2020-05-16T04:34:36.04 0.6 undecidable manual P 99 53.0025 50 0.78 38
TV.SF13.HHN. 2020-05-16T04:34:36.18 0.6 undecidable manual S 300 30.5472 50 -0.15 47
IV.MOMA.HNZ. 2020-05-16T04:34:35.04 0.3 undecidable manual P 75 52.7028 50 -0.18 68
TV.SF11.HHZ. 2020-05-16T04:34:35.78 0.6 undecidable manual S 314 29.9478 50 -0.41 45
IV.MGAB.HHZ. 2020-05-16T04:34:35.88 0.6 undecidable manual S 28 29.0487 50 -0.05 48
TV.SF14.HHN. 2020-05-16T04:34:35.49 0.6 undecidable manual S 287 28.1496 50 -0.2 47
TV.SF04.EHZ. 2020-05-16T04:34:35.60 0.3 undecidable manual S 307 28.749 50 -0.26 69
IV.MCIV.CHE. 2020-05-16T04:34:34.53 0.6 undecidable manual S 296 24.3534 50 -0.16 48
TV.SF03.EHN. 2020-05-16T04:34:34.82 0.6 undecidable manual S 303 25.0527 50 -0.04 49
IV.ARCI.HHZ. 2020-05-16T04:34:34.25 0.3 undecidable manual P 296 42.624 50 0.59 62
IV.BARO.EHZ. 2020-05-16T04:34:34.23 0.1 undecidable manual P 170 48.9177 50 -0.39 87
IV.SACS.HHZ. 2020-05-16T04:34:33.00 0.3 undecidable manual S 351 18.7701 119 -0.06 74
TV.SF01.EHZ. 2020-05-16T04:34:32.88 0.3 undecidable manual P 295 34.2435 50 0.51 65
TV.SF03.EHN. 2020-05-16T04:34:31.04 0.3 undecidable manual P 303 25.0527 50 0.09 72
IV.MGAB.HHZ. 2020-05-16T04:34:31.05 0.1 positive manual P 28 29.0487 50 -0.51 87
IV.LATE.HHZ. 2020-05-16T04:34:31.75 0.3 undecidable manual S 237 13.6752 127 0.17 73
TV.SF14.HHN. 2020-05-16T04:34:31.49 0.1 undecidable manual P 287 28.1496 50 0.07 96
TV.SF04.EHZ. 2020-05-16T04:34:31.43 0.3 undecidable manual P 307 28.749 50 -0.09 72
TV.SF13.HHN. 2020-05-16T04:34:31.71 0.1 undecidable manual P 300 30.5472 50 -0.08 96
TV.SF11.HHZ. 2020-05-16T04:34:31.64 0.3 undecidable manual P 314 29.9478 50 -0.07 72
IV.MCIV.CHE. 2020-05-16T04:34:30.79 0.3 undecidable manual P 296 24.3534 50 -0.05 73
IV.LATE.HHZ. 2020-05-16T04:34:29.04 0.1 positive manual P 237 13.6752 127 -0.01 100
IV.SACS.HHZ. 2020-05-16T04:34:29.69 0.1 positive manual P 351 18.7701 119 -0.21 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATTE.HHN. ML:0.0 0.000036999545 0.3776 AML other m 2020-05-16T04:34:50.54
IV.ATTE.HHE. ML:0.0 0.000029970745 0.2784 AML other m 2020-05-16T04:34:48.31
IV.LATE.HHN. ML:1.6 0.00044578365 0.2976 AML other m 2020-05-16T04:34:36.17
IV.LATE.HHE. ML:1.6 0.00039815719999999996 0.3616 AML other m 2020-05-16T04:34:35.01
IV.SACS.HHE. ML:1.8 0.0004520767 0.16 AML other m 2020-05-16T04:34:33.34
IV.SACS.HNN. ML:1.3 0.00015685525 0.2112 AML other m 2020-05-16T04:34:34.76
IV.SACS.HHN. ML:1.4 0.00017786185 0.2016 AML other m 2020-05-16T04:34:34.77
IV.SACS.HNE. ML:1.8 0.00045574194999999996 0.16 AML other m 2020-05-16T04:34:33.34
IV.MGAB.HNN. ML:1.5 0.0001693456 0.16 AML other m 2020-05-16T04:34:38.43
IV.MGAB.HHN. ML:1.6 0.00017906129999999997 0.1824 AML other m 2020-05-16T04:34:38.51
IV.MGAB.HHE. ML:1.6 0.00018940079999999997 0.2176 AML other m 2020-05-16T04:34:37.94
IV.MGAB.HNE. ML:1.6 0.00019068195 0.1984 AML other m 2020-05-16T04:34:37.93
TV.SF04.EHN. ML:1.5 0.0001710074 0.1184 AML other m 2020-05-16T04:34:37.01
TV.SF04.EHE. ML:1.4 0.00013403599999999998 0.1984 AML other m 2020-05-16T04:34:36.32
TV.SF01.EHN. ML:1.2 0.000058578140000000004 0.1792 AML other m 2020-05-16T04:34:38.84
TV.SF01.EHE. ML:1.2 0.00006292856 0.2816 AML other m 2020-05-16T04:34:38.24
IV.BARO.EHN. ML:1.3 0.00004784244 0.3424 AML other m 2020-05-16T04:34:44.02
IV.BARO.EHE. ML:1.2 0.00004087873 0.4192 AML other m 2020-05-16T04:34:45.53
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