Earthquake with magnitude of ML 0.8 on date 11-08-2020 and time 02:20:17 (Italy) in region 5 km NE Castelsantangelo sul Nera (MC)

A magnitude ML 0.8 earthquake occured in region: 5 km NE Castelsantangelo sul Nera (MC), on

  • 11-08-2020 00:20:17 (UTC)
  • 11-08-2020 02:20:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.92, 13.2 at 9 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
Castelsantangelo sul Nera MC 5 281 281
Ussita MC 6 444 725
Bolognola MC 8 142 867
Visso MC 10 1107 1974
Montemonaco AP 10 604 2578
Montefortino FM 11 1178 3756
Acquacanina MC 12 121 3877
Fiastra MC 13 559 4436
Montegallo AP 14 523 4959
Amandola FM 14 3629 8588
Preci PG 14 724 9312
Sarnano MC 15 3264 12576
Fiordimonte MC 16 202 12778
Norcia PG 17 4957 17735
Comunanza AP 18 3166 20901
Pievebovigliana MC 18 866 21767
Monte Cavallo MC 18 145 21912
Arquata del Tronto AP 18 1178 23090
Pieve Torina MC 18 1458 24548
Gualdo MC 19 815 25363

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
50 Km NW of Teramo (54892 inhabitants)
61 Km NE of Terni (111501 inhabitants)
66 Km N of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
90 Km NW of Montesilvano (53738 inhabitants)
97 Km NW of Pescara (121014 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 0.8 2020-08-11
00:20:17
42.92 13.21 9 2020-08-11
00:26:48
Sala Sismica INGV-Roma 81859881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-11 00:20:17 ± 0.08
Latitude 42.92 ± 0.00
Longitude 13.21 ± 0.00
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81859881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 385
Semi-minor axis of confidence ellipse (meter) 281
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 11
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41639
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 81859881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-11 00:26:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ROSPO.HHZ. 2020-08-11T00:21:05.93 3.0 undecidable manual Sg 2.68 0
IV.ASSB.HHZ. 2020-08-11T00:20:32.23 0.3 undecidable manual S 287 0.4164 50 0.01 72
IV.MF5.EHZ. 2020-08-11T00:20:25.64 0.6 undecidable manual S 71 0.197 113 0.37 46
IV.ASSB.HHZ. 2020-08-11T00:20:25.65 0.1 undecidable manual P 287 0.4164 50 -0.15 93
IV.GUMA.HNN. 2020-08-11T00:20:24.37 0.3 undecidable manual S 35 0.1673 117 0.12 74
IT.MTCL.HGE. 2020-08-11T00:20:24.27 0.6 undecidable manual S 295 0.1655 117 0.09 49
IV.CPGN.EHZ. 2020-08-11T00:20:24.83 3.0 undecidable manual P -0.08 0
IV.FDMO.HHZ. 2020-08-11T00:20:23.12 0.3 undecidable manual S 322 0.1412 121 -0.24 72
IV.CSP1.EHE. 2020-08-11T00:20:23.90 0.6 undecidable manual S 360 0.1673 117 -0.34 47
IV.NRCA.HHZ. 2020-08-11T00:20:22.24 0.6 undecidable manual S 216 0.1124 127 -0.2 49
IV.GUMA.HNN. 2020-08-11T00:20:21.33 0.1 undecidable manual P 35 0.1673 117 0.13 98
IV.MMO1.EHZ. 2020-08-11T00:20:21.32 0.3 undecidable manual S 106 0.0926 132 -0.52 68
IV.MF5.EHZ. 2020-08-11T00:20:21.94 0.6 positive manual P 71 0.197 113 0.15 48
IT.MTCL.HGE. 2020-08-11T00:20:21.26 0.1 undecidable manual P 295 0.1655 117 0.1 98
IV.CSP1.EHE. 2020-08-11T00:20:21.14 0.1 undecidable manual P 360 0.1673 117 -0.05 99
IV.NRCA.HHZ. 2020-08-11T00:20:20.30 0.1 undecidable manual P 216 0.1124 127 0.15 99
IV.MC2.EHZ. 2020-08-11T00:20:20.50 0.6 undecidable manual S 222 0.018 168 0.17 50
IV.FDMO.HHZ. 2020-08-11T00:20:20.73 0.1 undecidable manual P 322 0.1412 121 0.05 100
IV.MC2.EHZ. 2020-08-11T00:20:19.13 0.1 undecidable manual P 222 0.018 168 0.19 99
IV.MMO1.EHZ. 2020-08-11T00:20:19.70 0.1 undecidable manual P 106 0.0926 132 -0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1 0.0001275 0.66 AML other m 2020-08-11T00:20:22.97
IV.NRCA.HHN. ML:1 0.0001052 0.08 AML other m 2020-08-11T00:20:22.93
IV.FDMO.HHN. ML:0.4 2.625E-5 0.44 AML other m 2020-08-11T00:20:23.63
IV.FDMO.HHE. ML:0.6 4.035E-5 0.1 AML other m 2020-08-11T00:20:23.47
IV.NRCA.HNE. ML:1 0.000117315 0.13 AML other m 2020-08-11T00:20:22.97
IV.NRCA.HNN. ML:1 0.0001244984 0.89 AML other m 2020-08-11T00:20:22.59
IV.ASSB.HHE. ML:0.5 8.15399E-6 0.1 AML other m 2020-08-11T00:20:32.67
IV.ASSB.HHN. ML:0.5 7.6563305E-6 0.18 AML other m 2020-08-11T00:20:32.60
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