Earthquake with magnitude of ML 0.9 on date 18-05-2020 and time 23:58:35 (Italy) in region 6 km E Norcia (PG)

A magnitude ML 0.9 earthquake occured in region: 6 km E Norcia (PG), on

  • 18-05-2020 21:58:35 (UTC)
  • 18-05-2020 23:58:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.78, 13.16 at 10 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
Norcia PG 6 4957 4957
Arquata del Tronto AP 11 1178 6135
Accumoli RI 12 667 6802
Castelsantangelo sul Nera MC 13 281 7083
Cascia PG 14 3217 10300
Preci PG 15 724 11024
Montegallo AP 15 523 11547
Visso MC 18 1107 12654
Ussita MC 18 444 13098
Cittareale RI 18 482 13580
Montemonaco AP 19 604 14184
Amatrice RI 20 2657 16841

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
49 Km NE of Terni (111501 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
73 Km SE of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
93 Km W of Pescara (121014 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km NW of Chieti (51815 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
97 Km SW of Ancona (100861 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
Rev 100 ML 0.9 2020-05-18
21:58:35
42.78 13.16 10 2020-05-18
22:05:47
Sala Sismica INGV-Roma 79292781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-18 21:58:35 ± 0.05
Latitude 42.78 ± 0.00
Longitude 13.16 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79292781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 372
Semi-minor axis of confidence ellipse (meter) 270
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 35
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
Epicentral distance of station farthest from the epicenter (degree) 0.54769
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 17
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 79292781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-18 22:05:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MURB.HHZ. 2020-05-18T21:58:59.39 3.0 undecidable manual S 0.07 0
IV.CRTC.HHZ. 2020-05-18T21:58:52.46 3.0 undecidable manual P -2.08 0
IV.MOMA.HNN. 2020-05-18T21:58:51.47 0.6 undecidable manual S 273 0.4371 50 0.77 38
IV.ARRO.EHE. 2020-05-18T21:58:48.81 0.6 undecidable manual S 235 0.357 50 0.47 44
IV.TERO.HHZ. 2020-05-18T21:58:48.25 0.6 undecidable manual S 116 0.3597 50 -0.18 47
IV.MF5.EHZ. 2020-05-18T21:58:47.05 0.3 undecidable manual S 46 0.2968 50 0.49 66
IV.CSP1.EHZ. 2020-05-18T21:58:47.20 0.3 undecidable manual S 5 0.3094 50 0.27 69
IV.CESI.HHZ. 2020-05-18T21:58:46.37 0.3 undecidable manual S 319 0.2923 50 -0.04 73
IV.RM33.EHZ. 2020-05-18T21:58:45.80 0.3 undecidable manual S 172 0.277 50 -0.16 71
IV.EL6.EHZ. 2020-05-18T21:58:45.87 0.1 undecidable manual P 355 0.5477 50 -0.1 91
IV.FDMO.HHZ. 2020-05-18T21:58:45.22 0.3 undecidable manual S 347 0.259 50 -0.22 71
IV.MOMA.HNN. 2020-05-18T21:58:44.17 0.1 undecidable manual P 273 0.4371 50 0.1 93
IT.MTCL.HGZ. 2020-05-18T21:58:44.52 0.6 undecidable manual S 330 0.2428 50 -0.43 45
IV.LNSS.HHZ. 2020-05-18T21:58:43.37 0.3 undecidable manual S 207 0.2023 114 -0.15 73
IV.ARRO.EHE. 2020-05-18T21:58:43.35 0.1 undecidable manual P 235 0.357 50 0.64 82
IV.FEMA.HNZ. 2020-05-18T21:58:43.22 0.6 undecidable manual S 335 0.1979 114 -0.13 49
IV.MMO1.EHZ. 2020-05-18T21:58:42.28 0.1 undecidable manual S 46 0.1655 118 0.03 100
IV.TERO.HHZ. 2020-05-18T21:58:42.47 0.1 undecidable manual P 116 0.3597 50 -0.29 91
IV.MTRA.EHZ. 2020-05-18T21:58:42.35 0.1 undecidable manual S 99 0.1718 117 -0.11 98
IV.MF5.EHZ. 2020-05-18T21:58:42.02 0.1 undecidable manual P 46 0.2968 50 0.34 91
IV.T1299.EHZ. 2020-05-18T21:58:42.75 0.6 undecidable manual S 150 0.1718 117 0.28 47
IV.MC2.EHZ. 2020-05-18T21:58:41.65 0.6 undecidable manual S 8 0.1295 124 0.61 44
IV.RM33.EHZ. 2020-05-18T21:58:41.05 0.1 undecidable manual P 172 0.277 50 -0.28 93
IV.CESI.HHZ. 2020-05-18T21:58:41.40 0.1 undecidable manual P 319 0.2923 50 -0.2 94
IV.CSP1.EHZ. 2020-05-18T21:58:41.76 0.1 undecidable manual P 5 0.3094 50 -0.14 95
IT.MTCL.HGZ. 2020-05-18T21:58:40.40 0.1 undecidable manual P 330 0.2428 50 -0.35 92
IV.FDMO.HHZ. 2020-05-18T21:58:40.76 0.1 undecidable manual P 347 0.259 50 -0.28 93
IV.FEMA.HNZ. 2020-05-18T21:58:39.62 0.1 undecidable manual P 335 0.1979 114 -0.21 96
IV.MMO1.EHZ. 2020-05-18T21:58:39.22 0.1 undecidable manual P 46 0.1655 118 0.03 100
IV.MTRA.EHZ. 2020-05-18T21:58:39.28 0.1 undecidable manual P 99 0.1718 117 -0.03 100
IV.NRCA.HNZ. 2020-05-18T21:58:39.00 0.1 undecidable manual S 323 0.0621 145 -0.18 99
IV.T1299.EHZ. 2020-05-18T21:58:39.43 0.1 undecidable manual P 150 0.1718 117 0.11 98
IV.LNSS.HHZ. 2020-05-18T21:58:39.82 0.1 undecidable manual P 207 0.2023 114 -0.1 98
IV.MC2.EHZ. 2020-05-18T21:58:38.79 0.1 undecidable manual P 8 0.1295 124 0.29 95
IV.NRCA.HNZ. 2020-05-18T21:58:37.54 0.1 undecidable manual P 323 0.0621 145 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2 0.00157 0.14 AML other m 2020-05-18T21:58:39.04
IV.NRCA.HNN. ML:1.9 0.00139 0.12 AML other m 2020-05-18T21:58:39.05
IV.NRCA.HNE. ML:2.1 0.001795 0.16 AML other m 2020-05-18T21:58:39.17
IV.NRCA.HHE. ML:2.1 0.001865 0.16 AML other m 2020-05-18T21:58:39.17
IV.MTRA.EHE. ML:0.8 5.615E-5 1.68 AML other m 2020-05-18T21:58:43.05
IV.MTRA.EHN. ML:0.8 5.445E-5 0.22 AML other m 2020-05-18T21:58:43.13
IV.LNSS.HHE. ML:1.4 0.0001725 0.2 AML other m 2020-05-18T21:58:43.58
IV.LNSS.HHN. ML:1.3 0.000123 1.8 AML other m 2020-05-18T21:58:44.08
IV.FDMO.HHN. ML:0.8 3.15E-5 1.48 AML other m 2020-05-18T21:58:46.99
IV.CESI.HHN. ML:1.2 7.695E-5 0.32 AML other m 2020-05-18T21:58:46.52
IV.FDMO.HHE. ML:0.8 3.41E-5 0.18 AML other m 2020-05-18T21:58:46.65
IV.CESI.HHE. ML:0.9 3.57E-5 0.6 AML other m 2020-05-18T21:58:46.50
IV.TERO.HHE. ML:0.8 2.045E-5 0.48 AML other m 2020-05-18T21:58:48.93
IV.TERO.HHN. ML:0.8 2.16E-5 0.76 AML other m 2020-05-18T21:58:50.66
IV.RM33.EHN. ML:0.6 2.2270675E-5 0.0768 AML other m 2020-05-18T21:58:46.34
IV.RM33.EHE. ML:0.8 3.0293775E-5 0.2304 AML other m 2020-05-18T21:58:46.93
IV.CSP1.EHN. ML:0.9 3.23270677E-5 0.3328 AML other m 2020-05-18T21:58:48.33
IV.CSP1.EHE. ML:0.9 3.2550525E-5 0.2048 AML other m 2020-05-18T21:58:47.74
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