Earthquake with magnitude of ML 2.4 on date 16-05-2020 and time 17:37:22 (Italy) in region 4 km NW Bolsena (VT)

A magnitude ML 2.4 earthquake occured in region: 4 km NW Bolsena (VT), on

  • 16-05-2020 15:37:22 (UTC)
  • 16-05-2020 17:37:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.67, 11.96 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Bolsena VT 4 3991 3991
Castel Giorgio TR 4 2131 6122
San Lorenzo Nuovo VT 5 2091 8213
Grotte di Castro VT 8 2683 10896
Gradoli VT 9 1353 12249
Castel Viscardo TR 10 2938 15187
Acquapendente VT 11 5506 20693
Porano TR 12 1966 22659
Latera VT 12 836 23495
Bagnoregio VT 12 3650 27145
Onano VT 12 995 28140
Lubriano VT 13 909 29049
Orvieto TR 13 20630 49679
Capodimonte VT 14 1731 51410
Proceno VT 14 557 51967
Marta VT 16 3499 55466
Allerona TR 16 1794 57260
Montefiascone VT 16 13432 70692
Valentano VT 16 2868 73560
Celleno VT 18 1355 74915
Civitella d'Agliano VT 20 1640 76555
Castiglione in Teverina VT 20 2329 78884

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Viterbo (67173 inhabitants)
57 Km W of Terni (111501 inhabitants)
60 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)
89 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

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire *

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 2.4 2020-05-16
15:37:22
42.67 11.96 10 2020-11-19
12:37:00
Bollettino Sismico Italiano INGV 82738541
Reviewed
Rev100
ML 2.4 2020-05-16
15:37:22
42.68 11.98 5 2020-05-16
15:47:13
Sala Sismica INGV-Roma 79203601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-16 15:37:22 ± 0.11
Latitude 42.67 ± 0.01
Longitude 11.96 ± 0.01
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 82738541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 566
Semi-minor axis of confidence ellipse (meter) 307
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 357
Circular confidence region, given by single value of horizontal uncertainty (meter) 570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.1313
Epicentral distance of station farthest from the epicenter (degree) 1.14124
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 59
Type of magnitude ML
Reference to an origin 82738541
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-08 15:05:39

ML:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations 58
Type of magnitude ML
Reference to an origin 79203601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-16 15:47:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHZ. 2020-05-16T15:37:43.96 0.6 undecidable manual P 73 1.1412 50 0.77 33
IV.EL6.EHZ. 2020-05-16T15:37:41.67 0.6 undecidable manual P 51 1.0594 50 -0.13 41
IV.PARC.HHZ. 2020-05-16T15:37:41.19 0.3 undecidable manual P 12 0.9964 50 0.48 58
IV.TRIF.CHZ. 2020-05-16T15:37:40.17 0.3 undecidable manual P 300 0.8939 50 1.21 43
IV.PIEI.HHZ. 2020-05-16T15:37:40.78 0.6 undecidable manual P 26 0.9587 50 0.72 35
IV.MTCE.HHZ. 2020-05-16T15:37:39.15 0.3 undecidable manual P 138 0.8669 50 0.64 56
IV.ATPI.EHZ. 2020-05-16T15:37:38.54 0.6 undecidable manual P 22 0.8418 50 0.48 40
IV.CASP.HHZ. 2020-05-16T15:37:38.86 0.3 undecidable manual P 279 0.8148 50 1.25 43
IV.ATFO.HHZ. 2020-05-16T15:37:38.27 0.6 undecidable manual P 32 0.8238 50 0.5 40
IV.RIBO.EHZ. 2020-05-16T15:37:37.54 0.6 undecidable manual P 293 0.7267 50 1.43 26
IV.BARO.EHZ. 2020-05-16T15:37:37.44 0.6 undecidable manual S 171 0.429 50 -0.06 47
IV.ATVO.HHZ. 2020-05-16T15:37:37.31 0.1 negative manual P 24 0.7797 50 0.3 84
IV.MURB.HHZ. 2020-05-16T15:37:36.18 0.3 undecidable manual P 35 0.7186 50 0.21 65
IV.ATMI.HHZ. 2020-05-16T15:37:36.22 0.6 undecidable manual P 18 0.6979 50 0.61 39
IV.ARCI.HHZ. 2020-05-16T15:37:36.92 0.6 undecidable manual S 297 0.4002 50 0.26 46
IV.ATCC.EHE. 2020-05-16T15:37:35.75 0.3 undecidable manual P 44 0.7123 50 -0.11 66
IV.MAON.HHZ. 2020-05-16T15:37:35.49 0.3 undecidable manual P 249 0.6601 50 0.53 61
IV.ATTE.HHZ. 2020-05-16T15:37:34.00 0.3 undecidable manual P 28 0.598 50 0.1 68
TV.SF01.EHZ. 2020-05-16T15:37:34.55 0.6 undecidable manual S 296 0.3256 50 0.12 48
IV.SRES.HHN. 2020-05-16T15:37:34.52 1.0 undecidable manual P 137 0.5927 50 0.71 19
IV.ASSB.HHZ. 2020-05-16T15:37:34.30 0.3 undecidable manual P 54 0.6295 50 -0.14 67
IV.TOLF.HHN. 2020-05-16T15:37:33.29 0.3 undecidable manual P 177 0.6088 50 -0.79 56
TV.SF13.HHN. 2020-05-16T15:37:33.32 0.6 undecidable manual S 300 0.2914 50 -0.12 48
TV.SF14.HHZ. 2020-05-16T15:37:32.58 0.6 undecidable manual S 288 0.2689 50 -0.19 48
TV.SF04.EHZ. 2020-05-16T15:37:32.83 0.6 undecidable manual S 306 0.2761 50 -0.14 48
IV.MGAB.HHZ. 2020-05-16T15:37:32.05 0.6 undecidable manual S 24 0.2635 50 -0.56 44
TV.SF11.HHZ. 2020-05-16T15:37:32.99 0.6 undecidable manual S 313 0.2869 50 -0.3 46
IV.MCIV.CHZ. 2020-05-16T15:37:31.38 0.6 undecidable manual S 297 0.2356 50 -0.41 46
IV.CESX.HHE. 2020-05-16T15:37:31.13 0.6 undecidable manual P 98 0.4623 50 -0.46 43
IT.GNU.HGE. 2020-05-16T15:37:31.82 0.3 undecidable manual P 73 0.4641 50 0.21 68
TV.SF03.EHE. 2020-05-16T15:37:31.69 0.6 undecidable manual S 303 0.2419 50 -0.28 47
IV.BARO.EHZ. 2020-05-16T15:37:30.41 0.1 positive manual P 171 0.429 50 -0.6 83
IV.ARCI.HHZ. 2020-05-16T15:37:30.57 0.3 undecidable manual P 297 0.4002 50 0.05 72
IV.MOMA.HHZ. 2020-05-16T15:37:30.96 0.3 undecidable manual P 73 0.4641 50 -0.65 61
IV.SACS.HHZ. 2020-05-16T15:37:29.85 0.3 undecidable manual S 347 0.1808 117 -0.09 74
TV.SF01.EHZ. 2020-05-16T15:37:29.38 0.3 undecidable manual P 296 0.3256 50 0.14 71
TV.SF11.HHZ. 2020-05-16T15:37:28.41 0.1 undecidable manual P 313 0.2869 50 -0.16 95
IV.LATE.HHZ. 2020-05-16T15:37:28.27 0.3 undecidable manual S 244 0.1313 125 -0.02 76
TV.SF13.HHN. 2020-05-16T15:37:28.61 0.1 undecidable manual P 300 0.2914 50 -0.05 98
TV.SF14.HHZ. 2020-05-16T15:37:28.14 0.3 undecidable manual P 288 0.2689 50 -0.14 72
TV.SF04.EHZ. 2020-05-16T15:37:28.17 0.1 undecidable manual P 306 0.2761 50 -0.22 95
IV.MGAB.HHZ. 2020-05-16T15:37:27.56 0.1 positive manual P 24 0.2635 50 -0.62 85
TV.SF03.EHE. 2020-05-16T15:37:27.50 0.1 positive manual P 303 0.2419 50 -0.31 93
IV.MCIV.CHZ. 2020-05-16T15:37:27.45 0.1 positive manual P 297 0.2356 50 -0.26 95
IV.SACS.HHZ. 2020-05-16T15:37:26.32 0.1 positive manual P 347 0.1808 117 -0.32 94
IV.LATE.HHZ. 2020-05-16T15:37:25.77 0.1 positive manual P 244 0.1313 125 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LATE.HHN. ML:2.8 0.0060696555 0.256 AML other m 2020-05-16T15:37:33.01
IV.LATE.HHE. ML:2.6 0.003832453 0.4096 AML other m 2020-05-16T15:37:30.25
IV.SACS.HHE. ML:2.8 0.004099392 0.2816 AML other m 2020-05-16T15:37:30.36
IV.SACS.HNN. ML:2.6 0.002899553 0.2432 AML other m 2020-05-16T15:37:30.02
IV.SACS.HHN. ML:2.6 0.0029542045 0.2432 AML other m 2020-05-16T15:37:30.02
IV.SACS.HNE. ML:2.8 0.00427528 0.2816 AML other m 2020-05-16T15:37:30.50
IV.MCIV.CHE. ML:2.2 0.00094532825 0.2816 AML other m 2020-05-16T15:37:32.01
IV.MCIV.CHN. ML:2.2 0.0008546561 0.2176 AML other m 2020-05-16T15:37:33.38
IV.MGAB.HHN. ML:2.7 0.002316951 0.32 AML other m 2020-05-16T15:37:33.38
IV.MGAB.HHE. ML:2.7 0.0026436115 0.3968 AML other m 2020-05-16T15:37:34.12
IV.MGAB.HNE. ML:2.7 0.002248147 0.4992 AML other m 2020-05-16T15:37:32.77
IV.MGAB.HNN. ML:2.6 0.002115516 0.3328 AML other m 2020-05-16T15:37:33.38
TV.SF04.EHE. ML:2.6 0.001652058 0.2816 AML other m 2020-05-16T15:37:33.37
TV.SF04.EHN. ML:2.5 0.0014416735 0.2688 AML other m 2020-05-16T15:37:37.33
TV.SF01.EHE. ML:2.4 0.00113852765 0.3584 AML other m 2020-05-16T15:37:36.51
TV.SF01.EHN. ML:2.3 0.0008163311 0.3072 AML other m 2020-05-16T15:37:36.50
IV.BARO.EHE. ML:2.2 0.00045733625 0.4992 AML other m 2020-05-16T15:37:43.27
IV.BARO.HNE. ML:2.3 0.0005674684 0.4992 AML other m 2020-05-16T15:37:43.27
IV.BARO.HNN. ML:2.3 0.0005764367 0.3328 AML other m 2020-05-16T15:37:39.68
IV.BARO.EHN. ML:2.3 0.00053448745 0.3456 AML other m 2020-05-16T15:37:39.52
IV.ARCI.HHN. ML:2 0.00031230145 0.4352 AML other m 2020-05-16T15:37:39.82
IV.ARCI.HNN. ML:2 0.00031471855 0.4352 AML other m 2020-05-16T15:37:39.82
IV.ARCI.HHE. ML:2.1 0.0003467864 0.4992 AML other m 2020-05-16T15:37:39.17
IV.ARCI.HNE. ML:2 0.0003340258 0.4992 AML other m 2020-05-16T15:37:39.17
IV.MOMA.HNN. ML:2.2 0.0003581031 0.384 AML other m 2020-05-16T15:37:43.28
IV.MOMA.HNE. ML:2.3 0.00048280575 0.256 AML other m 2020-05-16T15:37:41.27
IV.MOMA.HHE. ML:2.3 0.00051726715 0.256 AML other m 2020-05-16T15:37:41.66
IV.MOMA.HHN. ML:2.1 0.0003280926 0.3712 AML other m 2020-05-16T15:37:43.47
IV.ATTE.HHE. ML:2.4 0.00043071055 0.256 AML other m 2020-05-16T15:37:46.92
IV.ATTE.HHN. ML:2.4 0.000439884 0.384 AML other m 2020-05-16T15:37:46.22
IV.ASSB.HHN. ML:2.2 0.0002971345 0.7296 AML other m 2020-05-16T15:37:48.29
IV.ASSB.HHE. ML:2.4 0.00039742275 0.4352 AML other m 2020-05-16T15:37:47.42
IV.MURB.HHN. ML:3 0.001550422 0.3584 AML other m 2020-05-16T15:37:52.21
IV.MURB.HNE. ML:3.1 0.0016508435 0.3584 AML other m 2020-05-16T15:37:52.11
IV.MURB.HHE. ML:3.1 0.001764293 0.3584 AML other m 2020-05-16T15:37:52.11
IV.MURB.HNN. ML:3 0.0015561755 0.3712 AML other m 2020-05-16T15:37:52.20
IV.ATMI.HHE. ML:2.8 0.00092817745 0.3584 AML other m 2020-05-16T15:37:50.44
IV.ATMI.HHN. ML:2.8 0.0009185573 0.2816 AML other m 2020-05-16T15:37:52.22
IV.ATVO.HHN. ML:2.5 0.0003619222 0.4096 AML other m 2020-05-16T15:37:54.04
IV.ATVO.HHE. ML:2.6 0.00044670375 0.384 AML other m 2020-05-16T15:37:54.07
IV.RIBO.EHE.01 ML:1.9 0.000116423585 0.5888 AML other m 2020-05-16T15:37:56.47
IV.ATFO.HHE. ML:2.5 0.0003676045 0.64 AML other m 2020-05-16T15:37:53.86
IV.ATFO.HHN. ML:2.5 0.0003527332 0.6016 AML other m 2020-05-16T15:37:53.94
IV.ATPI.EHE. ML:2.4 0.0002626372 0.6016 AML other m 2020-05-16T15:37:54.57
IV.ATPI.EHN. ML:2.4 0.0002506016 0.4736 AML other m 2020-05-16T15:37:55.44
IV.ATPI.HNE. ML:2.4 0.00029271155 0.5888 AML other m 2020-05-16T15:37:54.57
IV.ATPI.HNN. ML:2.5 0.00031652115 0.5248 AML other m 2020-05-16T15:37:55.44
IV.CASP.HHE. ML:1.8 7.639527E-5 0.3456 AML other m 2020-05-16T15:37:52.00
IV.CASP.HHN. ML:2.3 0.0002153153 0.8192 AML other m 2020-05-16T15:37:52.90
IV.FDMO.HHE. ML:2.1 0.00012602193 0.3968 AML other m 2020-05-16T15:37:55.21
IV.FDMO.HHN. ML:2.1 0.000119457245 0.6016 AML other m 2020-05-16T15:37:59.17
IV.PIEI.HHE. ML:2.3 0.0001878621 0.3968 AML other m 2020-05-16T15:37:58.06
IV.PIEI.HHN. ML:2.2 0.0001492872 0.3456 AML other m 2020-05-16T15:37:57.47
IV.PARC.HHN. ML:2.2 0.0001332301 0.4352 AML other m 2020-05-16T15:38:04.82
IV.PARC.HHE. ML:2.5 0.0002867393 0.8832 AML other m 2020-05-16T15:38:01.12
IV.EL6.EHN. ML:2.5 0.0002221167 0.7168 AML other m 2020-05-16T15:38:05.88
IV.EL6.EHE. ML:2.5 0.00025584595 0.576 AML other m 2020-05-16T15:38:02.67
IV.MF5.EHN. ML:2.5 0.00019420845 0.6016 AML other m 2020-05-16T15:38:11.08
IV.MF5.EHE. ML:2.4 0.00017482794 0.576 AML other m 2020-05-16T15:38:17.80
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
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