Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 11-03-2021 and time 21:17:12 (UTC) in region 3 km SE Ussita (MC)

A magnitude ML 2.0 earthquake occured in region: 3 km SE Ussita (MC), on

  • 11-03-2021 21:17:12 (UTC)
  • 11-03-2021 22:17:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9230, 13.1610 at 9 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Ussita MC 3 444 444
Castelsantangelo sul Nera MC 3 281 725
Visso MC 6 1107 1832
Bolognola MC 10 142 1974
Preci PG 11 724 2698
Acquacanina MC 12 121 2819
Fiastra MC 13 559 3378
Montemonaco AP 14 604 3982
Fiordimonte MC 14 202 4184
Montefortino FM 15 1178 5362
Monte Cavallo MC 15 145 5507
Norcia PG 15 4957 10464
Pieve Torina MC 16 1458 11922
Pievebovigliana MC 17 866 12788
Montegallo AP 17 523 13311
Sarnano MC 17 3264 16575
Amandola FM 17 3629 20204
Sellano PG 19 1079 21283
Arquata del Tronto AP 20 1178 22461

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
53 Km NW of Teramo (54892 inhabitants)
58 Km NE of Terni (111501 inhabitants)
66 Km E of Perugia (166134 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
100 Km NW of Pescara (121014 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.0 2021-03-11
21:17:12		 42.9233 13.1607 9 2021-07-12
16:55:03		 Bollettino Sismico Italiano INGV 88426671
Reviewed
Rev100 		ML 2.0 2021-03-11
21:17:12		 42.9172 13.158 9 2021-03-11
21:22:26		 Sala Sismica INGV-Roma 88012441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-11 21:17:12 ± 0.04
Latitude 42.9233 ± 0.0027
Longitude 13.1607 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88426671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 301
Semi-minor axis of confidence ellipse (meter) 162
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 56
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 39
Number of associated phases, regardless of their use for origin computation 54
Number of defining phases 53
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.86874
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 88426671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-22 19:11:48

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 88012441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-11 21:22:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ROM9.HNZ. 2021-03-11T21:17:53.81 3.0 undecidable manual S 0.91 0
IV.CRTC.HHZ. 2021-03-11T21:17:29.54 0.3 undecidable manual P 347 96.4257 50 0.21 62
IV.TERO.HHZ. 2021-03-11T21:17:29.15 0.3 undecidable manual S 133 49.1175 50 0.29 66
IV.RM33.EHZ. 2021-03-11T21:17:28.32 0.3 undecidable manual S 175 46.2204 50 0.25 67
IV.NARO.HHZ. 2021-03-11T21:17:28.14 0.6 undecidable manual P 329 89.5437 50 -0.13 42
IV.EL6.EHE. 2021-03-11T21:17:28.11 0.3 undecidable manual S 354 45.3213 50 0.28 67
IV.PIEI.HHZ. 2021-03-11T21:17:27.34 0.3 undecidable manual P 324 84.6486 50 -0.19 63
IV.SNTG.HHE. 2021-03-11T21:17:26.64 0.6 undecidable manual S 334 40.9257 50 -0.01 48
IV.SMA1.EHZ. 2021-03-11T21:17:25.34 0.6 undecidable manual S 156 35.4423 50 0.14 47
IV.LNSS.HHZ. 2021-03-11T21:17:25.69 0.6 undecidable manual S 195 36.8298 50 0.1 47
IV.T1299.HNN. 2021-03-11T21:17:24.53 0.3 undecidable manual S 163 33.5442 50 -0.17 70
IV.ARVD.HHZ. 2021-03-11T21:17:24.48 0.1 undecidable manual P 345 66.1893 50 -0.2 87
IV.MURB.HHE. 2021-03-11T21:17:24.47 0.1 undecidable manual P 306 63.7917 50 0.15 89
IV.CESX.HHZ. 2021-03-11T21:17:23.43 0.3 undecidable manual P 233 58.2972 50 -0.04 69
IV.MOMA.HNZ. 2021-03-11T21:17:22.08 0.1 undecidable manual P 255 49.8168 50 -0.08 92
IV.ARRO.EHZ. 2021-03-11T21:17:22.41 0.3 undecidable manual P 220 49.9167 50 0.23 67
IV.MTRA.EHZ. 2021-03-11T21:17:22.77 0.3 undecidable manual S 134 26.6511 108 0.29 69
IV.MML1.HNZ. 2021-03-11T21:17:22.47 0.3 undecidable manual S 324 26.0517 108 0.17 71
IV.ATCC.EHE. 2021-03-11T21:17:22.09 0.1 undecidable manual P 305 51.2154 50 -0.28 88
IV.CAMP.HHE. 2021-03-11T21:17:21.55 0.1 undecidable manual P 155 47.5191 50 -0.26 89
IV.RM33.EHZ. 2021-03-11T21:17:21.47 0.3 undecidable manual P 175 46.2204 50 -0.13 69
IV.PF6.EHZ. 2021-03-11T21:17:21.28 0.3 undecidable manual S 7 23.9538 110 -0.32 69
IV.MNTT.EHZ. 2021-03-11T21:17:21.14 0.1 undecidable manual P 66 38.5281 50 0.73 79
IV.TERO.HHZ. 2021-03-11T21:17:21.79 0.6 undecidable manual P 133 49.1175 50 -0.26 45
IV.EL6.EHE. 2021-03-11T21:17:21.19 0.1 undecidable manual P 354 45.3213 50 -0.27 90
IV.CESI.HHZ. 2021-03-11T21:17:21.43 0.3 undecidable manual S 294 22.6551 111 0.25 70
IV.LNSS.HHZ. 2021-03-11T21:17:20.03 0.3 undecidable manual P 195 36.8298 50 -0.13 70
IV.CSP1.EHZ. 2021-03-11T21:17:20.14 0.6 undecidable manual S 11 19.0698 115 0.12 48
IV.GUMA.HHZ. 2021-03-11T21:17:20.89 0.3 undecidable manual S 42 20.9679 113 0.25 70
IV.SNTG.HHE. 2021-03-11T21:17:20.48 0.1 undecidable manual P 334 40.9257 50 -0.3 90
IV.MNTP.HNZ. 2021-03-11T21:17:20.14 0.1 undecidable manual P 46 34.5432 50 0.34 90
IV.GAVE.EHN. 2021-03-11T21:17:19.73 1.0 undecidable manual P 220 33.5442 50 0.07 24
IT.MTCL.HGZ. 2021-03-11T21:17:19.12 0.6 undecidable manual S 301 15.2736 120 0.26 47
IV.T1299.HNN. 2021-03-11T21:17:19.34 0.1 undecidable manual P 163 33.5442 50 -0.31 91
IV.SMA1.EHZ. 2021-03-11T21:17:19.70 0.1 undecidable manual P 156 35.4423 50 -0.24 92
IV.MMO1.EHZ. 2021-03-11T21:17:18.48 0.3 undecidable manual S 101 13.7751 122 0.06 74
IV.MTRA.EHZ. 2021-03-11T21:17:18.30 0.3 undecidable manual P 134 26.6511 108 -0.08 72
IV.MML1.HNZ. 2021-03-11T21:17:18.08 0.3 undecidable manual P 324 26.0517 108 -0.19 71
IV.SAP2.EHZ. 2021-03-11T21:17:18.58 0.3 undecidable manual P 45 27.2505 108 0.08 72
IV.MF5.EHZ. 2021-03-11T21:17:18.26 0.6 undecidable manual P 74 25.3524 109 0.14 48
IV.FDMO.HHZ. 2021-03-11T21:17:18.45 0.3 undecidable manual S 335 13.875 122 0.01 75
IV.CESI.HHZ. 2021-03-11T21:17:17.73 0.1 undecidable manual P 294 22.6551 111 0.1 96
IV.FEMA.HNZ. 2021-03-11T21:17:17.70 0.3 undecidable manual S 296 9.9789 131 0.35 70
IV.NRCA.HHZ. 2021-03-11T21:17:17.90 0.3 undecidable manual S 201 10.6782 129 0.36 70
IV.PF6.EHZ. 2021-03-11T21:17:17.56 0.1 undecidable manual P 7 23.9538 110 -0.3 92
IV.GUMA.HHZ. 2021-03-11T21:17:17.54 0.1 negative manual P 42 20.9679 113 0.23 94
IV.MMO1.EHZ. 2021-03-11T21:17:16.02 0.1 negative manual P 101 13.7751 122 0 100
IT.MTCL.HGZ. 2021-03-11T21:17:16.30 0.3 undecidable manual P 301 15.2736 120 0.02 75
IV.CSP1.EHZ. 2021-03-11T21:17:16.81 0.6 undecidable manual P 11 19.0698 115 -0.14 48
IV.MC2.EHZ. 2021-03-11T21:17:15.04 0.3 undecidable manual S 120 2.6973 163 -0.88 59
IV.FDMO.HHZ. 2021-03-11T21:17:15.96 0.1 negative manual P 335 13.875 122 -0.08 98
IV.FEMA.HNZ. 2021-03-11T21:17:15.50 0.1 undecidable manual P 296 9.9789 131 0.09 99
IV.NRCA.HHZ. 2021-03-11T21:17:15.75 0.1 negative manual P 201 10.6782 129 0.23 96
IV.MC2.EHZ. 2021-03-11T21:17:14.26 0.1 undecidable manual P 120 2.6973 163 -0.33 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.4 0.003045 0.44 AML other m 2021-03-11T21:17:18.32
IV.NRCA.HNN. ML:2.2 0.002205 0.6 AML other m 2021-03-11T21:17:18.75
IV.NRCA.HHN. ML:2.2 0.002175 0.6 AML other m 2021-03-11T21:17:18.75
IV.NRCA.HNE. ML:2.3 0.002855 1.34 AML other m 2021-03-11T21:17:18.32
IV.FDMO.HHN. ML:2.3 0.002075 0.68 AML other m 2021-03-11T21:17:19.15
IV.FDMO.HHE. ML:2.2 0.00175 0.56 AML other m 2021-03-11T21:17:19.95
IV.CSP1.EHE. ML:2.2 0.0012890000000000002 1.2 AML other m 2021-03-11T21:17:22.84
IV.CSP1.EHN. ML:2.2 0.001415 0.26 AML other m 2021-03-11T21:17:22.53
IV.CESI.HNN. ML:2.1 0.0008645 0.82 AML other m 2021-03-11T21:17:22.59
IV.CESI.HHE. ML:2.0 0.0007424999999999999 0.62 AML other m 2021-03-11T21:17:23.47
IV.CESI.HNE. ML:2.0 0.0007155 0.6 AML other m 2021-03-11T21:17:23.48
IV.GUMA.HHE. ML:2.2 0.001135 0.4 AML other m 2021-03-11T21:17:23.56
IV.MTRA.HNE. ML:1.9 0.00048699999999999997 1.08 AML other m 2021-03-11T21:17:23.82
IV.CESI.HHN. ML:2.0 0.000739 0.32 AML other m 2021-03-11T21:17:24.18
IV.GUMA.HNE. ML:2.2 0.0012250000000000002 0.44 AML other m 2021-03-11T21:17:24.56
IV.MTRA.EHE. ML:2.0 0.000494 1.18 AML other m 2021-03-11T21:17:24.08
IV.MTRA.HNN. ML:2.1 0.0006935 0.72 AML other m 2021-03-11T21:17:24.75
IV.MTRA.EHN. ML:2.0 0.000643 0.74 AML other m 2021-03-11T21:17:24.39
IV.GUMA.HHN. ML:2.2 0.0011149999999999999 0.9 AML other m 2021-03-11T21:17:25.60
IV.GUMA.HNN. ML:2.2 0.0013199999999999998 0.84 AML other m 2021-03-11T21:17:25.61
IV.LNSS.HHE. ML:1.8 0.000252 0.7 AML other m 2021-03-11T21:17:26.98
IV.SAP2.EHN. ML:2.7 0.0027649999999999997 0.46 AML other m 2021-03-11T21:17:26.95
IV.SAP2.EHE. ML:1.9 0.000435 1.64 AML other m 2021-03-11T21:17:27.92
IV.LNSS.HHN. ML:1.8 0.00021300000000000003 1.24 AML other m 2021-03-11T21:17:27.16
IV.RM33.HNN. ML:1.8 0.0001915 0.94 AML other m 2021-03-11T21:17:29.52
IV.RM33.EHN. ML:1.7 0.0001465 0.42 AML other m 2021-03-11T21:17:29.56
IV.MF5.EHN. ML:1.9 0.0005295 1.46 AML other m 2021-03-11T21:17:29.91
IV.RM33.EHE. ML:1.8 0.000169 1.04 AML other m 2021-03-11T21:17:30.39
IV.MF5.EHE. ML:2.0 0.0005535 1.36 AML other m 2021-03-11T21:17:30.85
IV.TERO.HHN. ML:1.7 0.0001465 0.9 AML other m 2021-03-11T21:17:30.92
IV.TERO.HHE. ML:1.5 0.00008745 0.52 AML other m 2021-03-11T21:17:31.19
IV.SMA1.EHN. ML:1.9 0.0003195 1.36 AML other m 2021-03-11T21:17:31.93
IV.RM33.HNE. ML:1.9 0.00020999999999999998 0.4 AML other m 2021-03-11T21:17:31.36
IV.ARRO.EHE. ML:1.4 0.00007185 0.54 AML other m 2021-03-11T21:17:32.91
IV.SMA1.EHE. ML:2.0 0.000393 0.7 AML other m 2021-03-11T21:17:33.56
IV.MNTT.EHE. ML:2.5 0.0011615 1.04 AML other m 2021-03-11T21:17:33.71
IV.CESX.HHN. ML:1.8 0.0001325 0.32 AML other m 2021-03-11T21:17:34.17
IV.CESX.HHE. ML:1.7 0.00009955 0.42 AML other m 2021-03-11T21:17:34.85
IV.ARVD.HHN. ML:1.6 0.00006515 0.14 AML other m 2021-03-11T21:17:35.17
IV.ARRO.EHN. ML:1.5 0.00008245 0.92 AML other m 2021-03-11T21:17:36.79
IV.MNTT.EHN. ML:2.1 0.000526 0.34 AML other m 2021-03-11T21:17:37.13
IV.ARVD.HHE. ML:1.8 0.0001062 0.26 AML other m 2021-03-11T21:17:37.65
IV.PIEI.HHN. ML:1.5 0.00004195 0.68 AML other m 2021-03-11T21:17:43.64
IV.PIEI.HHE. ML:1.6 0.00005375 0.48 AML other m 2021-03-11T21:17:45.21
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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