Earthquake with magnitude of ML 2.1 on date 15-05-2020 and time 16:40:32 (Italy) in region 3 km SW Castel Giorgio (TR)

A magnitude ML 2.1 earthquake occured in region: 3 km SW Castel Giorgio (TR), on

  • 15-05-2020 14:40:32 (UTC)
  • 15-05-2020 16:40:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.68, 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
Castel Giorgio TR 3 2131 2131
San Lorenzo Nuovo VT 4 2091 4222
Bolsena VT 5 3991 8213
Grotte di Castro VT 7 2683 10896
Castel Viscardo TR 9 2938 13834
Gradoli VT 9 1353 15187
Acquapendente VT 10 5506 20693
Onano VT 12 995 21688
Porano TR 12 1966 23654
Latera VT 12 836 24490
Orvieto TR 13 20630 45120
Proceno VT 13 557 45677
Bagnoregio VT 13 3650 49327
Lubriano VT 14 909 50236
Allerona TR 14 1794 52030
Capodimonte VT 16 1731 53761
Marta VT 17 3499 57260
Valentano VT 17 2868 60128
Montefiascone VT 17 13432 73560
Ficulle TR 19 1669 75229
Celleno VT 20 1355 76584
Sorano GR 20 3428 80012

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of Viterbo (67173 inhabitants)
58 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)
69 Km E of Grosseto (82087 inhabitants)
87 Km SE of Siena (53903 inhabitants)
87 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

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 2.1 2020-05-15
14:40:32
42.68 11.96 11 2020-11-19
12:36:58
Bollettino Sismico Italiano INGV 82212431
Reviewed
Rev100
ML 2.0 2020-05-15
14:40:32
42.69 11.95 10 2020-05-15
14:54:18
Sala Sismica INGV-Roma 79160571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-15 14:40:32 ± 0.09
Latitude 42.68 ± 0.00
Longitude 11.96 ± 0.00
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 82212431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 464
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 188
Circular confidence region, given by single value of horizontal uncertainty (meter) 460
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 32
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
Epicentral distance of station farthest from the epicenter (degree) 0.71226
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 21
Type of magnitude ML
Reference to an origin 82212431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-20 15:00:43

ML:2

Field Value
Value 2
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 79160571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-15 14:54:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SBPO.HNZ. 2020-05-15T14:41:13.02 3.0 undecidable manual P -0.22 0
IV.MOMA.HNZ. 2020-05-15T14:40:48.66 0.6 undecidable manual S 75 0.4658 50 0.04 47
IV.ARCI.HNZ. 2020-05-15T14:40:47.25 0.6 undecidable manual S 296 0.3912 50 0.85 37
IV.BARO.HNZ. 2020-05-15T14:40:47.80 0.6 undecidable manual S 171 0.4416 50 -0.11 46
IV.MURB.HNZ. 2020-05-15T14:40:46.70 0.3 undecidable manual P 35 0.7123 50 0.79 54
IV.TOLF.HHZ. 2020-05-15T14:40:44.22 0.6 undecidable manual P 177 0.6205 50 -0.13 44
IV.ARRO.EHZ. 2020-05-15T14:40:44.50 0.6 undecidable manual P 100 0.6043 50 0.44 42
TV.SF01.EHZ. 2020-05-15T14:40:44.51 0.6 undecidable manual S 294 0.3157 50 0.34 45
IV.ATTE.HHZ. 2020-05-15T14:40:44.15 0.3 undecidable manual P 29 0.59 50 0.33 64
TV.SF13.HHZ. 2020-05-15T14:40:43.06 0.3 undecidable manual S 299 0.2815 50 -0.1 72
TV.SF11.HHN. 2020-05-15T14:40:43.14 0.3 undecidable manual S 312 0.2743 50 0.18 71
IV.CESX.HHE. 2020-05-15T14:40:42.32 0.6 undecidable manual P 99 0.4694 50 0.56 41
TV.SF04.EHZ. 2020-05-15T14:40:42.13 0.6 undecidable manual S 305 0.2653 50 -0.54 43
TV.SF14.HHN. 2020-05-15T14:40:42.59 0.3 undecidable manual S 286 0.2608 50 0.04 73
IV.MGAB.HHZ. 2020-05-15T14:40:42.25 0.3 undecidable manual S 26 0.2554 50 -0.13 72
TV.SF03.EHE. 2020-05-15T14:40:41.40 0.3 undecidable manual S 301 0.2311 50 -0.29 70
IV.MOMA.HNZ. 2020-05-15T14:40:41.43 0.6 undecidable manual P 75 0.4658 50 -0.26 45
IV.MCIV.CHZ. 2020-05-15T14:40:41.49 0.3 undecidable manual S 295 0.2266 50 -0.04 73
IT.GNU.HGE. 2020-05-15T14:40:41.54 0.6 undecidable manual P 75 0.4658 50 -0.16 46
IV.ARCI.HNZ. 2020-05-15T14:40:40.94 0.3 undecidable manual P 296 0.3912 50 0.53 64
IV.BARO.HNZ. 2020-05-15T14:40:40.78 0.3 undecidable manual P 171 0.4416 50 -0.5 64
IV.SACS.HHZ. 2020-05-15T14:40:39.62 0.3 undecidable manual S 348 0.1682 119 -0.04 74
TV.SF01.EHZ. 2020-05-15T14:40:39.40 0.3 undecidable manual P 294 0.3157 50 0.27 69
TV.SF13.HHZ. 2020-05-15T14:40:38.42 0.3 undecidable manual P 299 0.2815 50 -0.12 71
TV.SF11.HHN. 2020-05-15T14:40:38.38 0.3 undecidable manual P 312 0.2743 50 -0.05 73
TV.SF04.EHZ. 2020-05-15T14:40:38.18 0.3 undecidable manual P 305 0.2653 50 -0.08 72
IV.LATE.HHZ. 2020-05-15T14:40:38.84 0.6 undecidable manual S 238 0.1322 125 0.34 47
TV.SF14.HHN. 2020-05-15T14:40:37.99 0.1 positive manual P 286 0.2608 50 -0.2 94
TV.SF03.EHE. 2020-05-15T14:40:37.53 0.1 undecidable manual P 301 0.2311 50 -0.16 95
IV.MCIV.CHZ. 2020-05-15T14:40:37.55 0.3 undecidable manual P 295 0.2266 50 -0.05 73
IV.MGAB.HHZ. 2020-05-15T14:40:37.70 0.1 negative manual P 26 0.2554 50 -0.39 90
IV.SACS.HHZ. 2020-05-15T14:40:36.32 0.1 positive manual P 348 0.1682 119 -0.2 96
IV.LATE.HHZ. 2020-05-15T14:40:35.83 0.1 positive manual P 238 0.1322 125 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SACS.HHN. ML:2.3 0.00149 1.06 AML other m 2020-05-15T14:40:39.83
IV.LATE.HHE. ML:2.1 0.00113 0.82 AML other m 2020-05-15T14:40:39.93
IV.SACS.HHE. ML:2.3 0.001435 1.4 AML other m 2020-05-15T14:40:39.29
IV.SACS.HNE. ML:2.3 0.00146 1.4 AML other m 2020-05-15T14:40:39.29
IV.MCIV.CHE. ML:1.8 0.0003505 0.28 AML other m 2020-05-15T14:40:42.32
IV.MCIV.CHN. ML:1.6 0.000237 0.8 AML other m 2020-05-15T14:40:42.50
IV.MGAB.HNE. ML:2.2 0.000794 0.76 AML other m 2020-05-15T14:40:43.00
TV.SF04.EHE. ML:2 0.0005655 0.18 AML other m 2020-05-15T14:40:43.20
IV.LATE.HHN. ML:2.3 0.00192 0.6 AML other m 2020-05-15T14:40:43.50
IV.MGAB.HNN. ML:2.1 0.0006395 0.6 AML other m 2020-05-15T14:40:43.38
IV.MGAB.HHN. ML:2.2 0.000817 0.74 AML other m 2020-05-15T14:40:43.38
TV.SF04.EHN. ML:2.1 0.000691 0.94 AML other m 2020-05-15T14:40:43.10
IV.MGAB.HHE. ML:2.1 0.000697 0.3 AML other m 2020-05-15T14:40:44.30
TV.SF01.EHN. ML:1.8 0.000264 0.42 AML other m 2020-05-15T14:40:44.92
TV.SF01.EHE. ML:0 0.0003375 0.56 AML other m 2020-05-15T14:40:48.45
IV.ATTE.HHN. ML:1.9 0.0001585 1.12 AML other m 2020-05-15T14:40:55.28
IV.ATTE.HHE. ML:1.9 0.000136 0.3 AML other m 2020-05-15T14:40:57.14
IV.ARRO.EHN. ML:1.7 9.605E-5 0.26 AML other m 2020-05-15T14:40:58.46
IV.ARRO.EHE. ML:1.6 7.635E-5 0.78 AML other m 2020-05-15T14:40:58.35
IV.MURB.HHE. ML:2.4 0.000363 0.78 AML other m 2020-05-15T14:41:00.58
IV.MURB.HHN. ML:2.5 0.00047 0.28 AML other m 2020-05-15T14:41:01.07
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