Earthquake with magnitude of ML 0.9 on date 08-08-2020 and time 00:11:13 (Italy) in region 4 km NE Poggio Bustone (RI)

A magnitude ML 0.9 earthquake occured in region: 4 km NE Poggio Bustone (RI), on

  • 07-08-2020 22:11:13 (UTC)
  • 08-08-2020 00:11:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.54, 12.92 at 11 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Poggio Bustone RI 4 2055 2055
Leonessa RI 5 2435 4490
Rivodutri RI 5 1253 5743
Morro Reatino RI 7 373 6116
Cantalice RI 8 2755 8871
Polino TR 8 233 9104
Labro RI 10 374 9478
Colli sul Velino RI 12 533 10011
Arrone TR 13 2763 12774
Monteleone di Spoleto PG 13 599 13373
Montefranco TR 14 1276 14649
Ferentillo TR 14 1913 16562
Micigliano RI 15 127 16689
Posta RI 15 694 17383
Greccio RI 15 1558 18941
Rieti RI 15 47698 66639
Cittaducale RI 17 6828 73467
Borbona RI 18 617 74084
Castel Sant'Angelo RI 18 1308 75392
Contigliano RI 19 3783 79175
Borgo Velino RI 19 972 80147
Antrodoco RI 19 2588 82735
Poggiodomo PG 20 117 82852

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Terni (111501 inhabitants)
45 Km W of L'Aquila (69753 inhabitants)
50 Km SE of Foligno (57155 inhabitants)
62 Km N of Guidonia Montecelio (88673 inhabitants)
64 Km N of Tivoli (56533 inhabitants)
66 Km W of Teramo (54892 inhabitants)
68 Km E of Viterbo (67173 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
80 Km NE of Roma (2864731 inhabitants)
95 Km N of Velletri (53303 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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
Reviewed
Rev100
ML 0.9 2020-08-07
22:11:13
42.54 12.92 11 2020-08-07
22:21:17
Sala Sismica INGV-Roma 81748361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-07 22:11:13 ± 0.07
Latitude 42.54 ± 0.00
Longitude 12.92 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81748361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 504
Semi-minor axis of confidence ellipse (meter) 307
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 10
Circular confidence region, given by single value of horizontal uncertainty (meter) 500
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.11242
Epicentral distance of station farthest from the epicenter (degree) 0.36962
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 81748361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-07 22:21:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MOMA.HNE. 2020-08-07T22:11:27.08 0.6 undecidable manual S 317 0.3696 50 0.17 46
IV.NRCA.HHZ. 2020-08-07T22:11:25.43 0.6 undecidable manual S 26 0.331 50 -0.33 45
IV.FIAM.HHZ. 2020-08-07T22:11:24.80 0.6 undecidable manual S 151 0.3058 50 -0.22 46
IV.T1299.HNN. 2020-08-07T22:11:24.70 0.6 undecidable manual S 70 0.286 50 0.27 46
IV.CESX.HHN. 2020-08-07T22:11:23.32 0.6 undecidable manual S 287 0.2536 50 -0.15 48
IV.RM33.EHZ. 2020-08-07T22:11:22.49 0.6 undecidable manual S 97 0.2212 50 -0.01 49
IV.MOMA.HNE. 2020-08-07T22:11:21.73 0.3 undecidable manual P 317 0.3696 50 0.52 64
IV.FIAM.HHZ. 2020-08-07T22:11:20.01 0.1 undecidable manual P 151 0.3058 50 -0.11 95
IV.GAVE.EHZ. 2020-08-07T22:11:20.19 0.6 undecidable manual S 354 0.1574 122 -0.32 47
IV.NRCA.HHZ. 2020-08-07T22:11:20.29 0.1 undecidable manual P 26 0.331 50 -0.25 92
IV.CESX.HHN. 2020-08-07T22:11:19.14 0.3 undecidable manual P 287 0.2536 50 -0.08 73
IV.LNSS.HHZ. 2020-08-07T22:11:19.16 0.6 undecidable manual S 54 0.1124 131 0.03 50
IV.ARRO.EHZ. 2020-08-07T22:11:19.18 0.6 undecidable manual S 291 0.1196 129 -0.14 49
IV.T1299.HNN. 2020-08-07T22:11:19.90 0.1 undecidable manual P 70 0.286 50 0.12 95
IV.RM33.EHZ. 2020-08-07T22:11:18.70 0.3 undecidable manual P 97 0.2212 50 0.04 74
IV.GAVE.EHZ. 2020-08-07T22:11:17.51 0.1 positive manual P 354 0.1574 122 0 100
IV.LNSS.HHZ. 2020-08-07T22:11:16.83 0.1 undecidable manual P 54 0.1124 131 0.11 99
IV.ARRO.EHZ. 2020-08-07T22:11:16.92 0.1 undecidable manual P 291 0.1196 129 0.1 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1 0.00010045 0.32 AML other m 2020-08-07T22:11:19.22
IV.ARRO.EHN. ML:0.7 4.95E-5 1.02 AML other m 2020-08-07T22:11:19.44
IV.LNSS.HHN. ML:1 0.000116 0.38 AML other m 2020-08-07T22:11:19.25
IV.ARRO.EHE. ML:0.5 3.71E-5 0.2 AML other m 2020-08-07T22:11:19.58
IV.GAVE.EHE. ML:1.2 0.000133 0.32 AML other m 2020-08-07T22:11:20.40
IV.GAVE.EHN. ML:1.3 0.000155 0.32 AML other m 2020-08-07T22:11:20.72
IV.NRCA.HHN. ML:0.9 2.785E-5 1.3 AML other m 2020-08-07T22:11:26.05
IV.NRCA.HHE. ML:0.8 2.375E-5 1.42 AML other m 2020-08-07T22:11:27.10
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download