Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 16-03-2021 and time 16:17:12 (Italy) in region 6 km S Castelsantangelo sul Nera (MC)

A magnitude ML 1.7 earthquake occured in region: 6 km S Castelsantangelo sul Nera (MC), on

  • 16-03-2021 15:17:12 (UTC)
  • 16-03-2021 16:17:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8450, 13.1390 at 8 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
Castelsantangelo sul Nera MC 6 281 281
Norcia PG 7 4957 5238
Preci PG 9 724 5962
Visso MC 10 1107 7069
Ussita MC 11 444 7513
Arquata del Tronto AP 15 1178 8691
Montegallo AP 16 523 9214
Montemonaco AP 17 604 9818
Cascia PG 17 3217 13035
Sellano PG 18 1079 14114
Bolognola MC 18 142 14256
Cerreto di Spoleto PG 18 1075 15331
Accumoli RI 19 667 15998
Montefortino FM 20 1178 17176
Monte Cavallo MC 20 145 17321

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
51 Km W of Teramo (54892 inhabitants)
51 Km NE of Terni (111501 inhabitants)
59 Km NW of L'Aquila (69753 inhabitants)
68 Km E of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
98 Km W of Pescara (121014 inhabitants)
100 Km NE of Guidonia Montecelio (88673 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 1.7 2021-03-16
15:17:12		 42.8452 13.1388 8 2021-07-12
16:55:03		 Bollettino Sismico Italiano INGV 88429741
Reviewed
Rev100 		ML 1.6 2021-03-16
15:17:12		 42.8455 13.1378 9 2021-03-16
15:26:57		 Sala Sismica INGV-Roma 88187511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-16 15:17:12 ± 0.04
Latitude 42.8452 ± 0.0018
Longitude 13.1388 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88429741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 232
Semi-minor axis of confidence ellipse (meter) 205
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 263
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 47
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.66820
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 23
Type of magnitude ML
Reference to an origin 88429741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-24 11:33:10

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 88187511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-16 15:26:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RIBO.EHZ.01 2021-03-16T15:18:04.57 3.0 undecidable manual S 3.7 0
IV.VENL.HNZ. 2021-03-16T15:17:57.63 3.0 positive manual Pn 3.25 0
TV.SF04.EHZ. 2021-03-16T15:17:49.85 3.0 undecidable manual S 0.07 0
IV.MIDA.HHZ. 2021-03-16T15:17:38.14 3.0 undecidable manual P -0.08 0
IV.ARVD.HHZ. 2021-03-16T15:17:35.88 0.3 undecidable manual S 348 74.1702 50 0.77 54
IV.MURB.HHZ. 2021-03-16T15:17:33.58 0.3 undecidable manual S 313 67.9764 50 0.11 66
IV.EL6.EHZ. 2021-03-16T15:17:30.06 0.1 undecidable manual S 357 53.8017 50 0.39 86
IV.MOMA.HHZ. 2021-03-16T15:17:27.87 0.1 undecidable manual S 265 46.5201 50 0.15 92
IV.TERO.HHZ. 2021-03-16T15:17:27.21 0.1 undecidable manual S 123 45.2214 50 -0.17 91
IV.CAMP.HHE. 2021-03-16T15:17:26.00 0.3 undecidable manual S 147 40.8258 50 -0.19 69
IV.SENI.HNZ. 2021-03-16T15:17:26.47 3.0 positive manual P -2.81 0
IV.ARVD.HHZ. 2021-03-16T15:17:25.16 0.3 undecidable manual P 348 74.1702 50 -0.28 63
IV.RM33.EHZ. 2021-03-16T15:17:25.26 0.1 undecidable manual S 171 37.8288 50 -0.14 93
IV.MURB.HHZ. 2021-03-16T15:17:24.49 0.3 undecidable manual P 313 67.9764 50 -0.01 68
IV.GUMA.HHZ. 2021-03-16T15:17:23.06 0.1 undecidable manual S 33 28.9488 106 0.38 90
IV.MML1.HNN. 2021-03-16T15:17:23.67 0.1 undecidable manual S 336 32.745 104 -0.27 91
IV.MF5.EHZ. 2021-03-16T15:17:23.68 0.1 undecidable manual S 59 30.4473 105 0.48 88
IV.SMA1.EHZ. 2021-03-16T15:17:22.54 0.3 undecidable manual S 146 28.6491 106 -0.06 72
IV.CSP1.EHZ. 2021-03-16T15:17:22.20 0.1 undecidable manual S 11 27.8499 107 -0.13 95
IV.T1299.HNZ. 2021-03-16T15:17:22.26 0.1 undecidable manual S 153 26.1516 108 0.51 88
IV.GAVE.HNZ. 2021-03-16T15:17:22.06 0.1 undecidable manual S 230 26.1516 108 0.3 92
IV.LNSS.HHZ. 2021-03-16T15:17:22.92 0.1 undecidable manual S 197 28.0497 106 0.54 87
IV.CESI.HHZ. 2021-03-16T15:17:21.92 0.1 undecidable manual S 313 25.9518 108 0.22 94
IV.EL6.EHZ. 2021-03-16T15:17:21.93 0.1 undecidable manual P 357 53.8017 50 -0.37 86
IV.MOMA.HHZ. 2021-03-16T15:17:21.12 0.1 undecidable manual P 265 46.5201 50 -0.06 93
IV.TERO.HHZ. 2021-03-16T15:17:20.49 0.1 undecidable manual P 123 45.2214 50 -0.49 85
IV.ARRO.EHE. 2021-03-16T15:17:20.43 0.1 undecidable manual P 226 42.4242 50 -0.11 93
IV.MTRA.EHZ. 2021-03-16T15:17:20.90 0.1 undecidable manual S 115 23.1546 110 0.13 96
IV.CAMP.HHE. 2021-03-16T15:17:19.78 0.3 undecidable manual P 147 40.8258 50 -0.51 64
IV.RM33.EHZ. 2021-03-16T15:17:19.81 0.1 undecidable manual P 171 37.8288 50 -0.03 95
IT.FOPC.HGZ. 2021-03-16T15:17:19.88 0.3 undecidable manual P 291 38.0286 50 0.01 72
IT.MTCL.HGZ. 2021-03-16T15:17:19.78 0.3 undecidable manual S 326 20.0688 112 0.03 74
IV.LNSS.HHZ. 2021-03-16T15:17:18.13 0.1 positive manual P 197 28.0497 106 0.03 97
IV.GUMA.HHZ. 2021-03-16T15:17:18.32 0.1 undecidable manual P 33 28.9488 106 0.06 96
IV.MMO1.EHZ. 2021-03-16T15:17:18.60 0.1 undecidable manual S 68 16.3725 117 -0.01 99
IV.SMA1.EHZ. 2021-03-16T15:17:18.11 0.3 undecidable manual P 146 28.6491 106 -0.11 71
IV.MML1.HNN. 2021-03-16T15:17:18.58 0.1 undecidable manual P 336 32.745 104 -0.42 89
IV.FEMA.HNZ. 2021-03-16T15:17:18.21 0.3 undecidable manual S 331 14.874 119 0.07 74
IV.GAVE.HNZ. 2021-03-16T15:17:18.13 0.1 undecidable manual P 230 26.1516 108 0.39 90
IV.MF5.EHZ. 2021-03-16T15:17:18.78 0.1 negative manual P 59 30.4473 105 0.22 93
IV.MTRA.EHZ. 2021-03-16T15:17:17.15 0.1 undecidable manual P 115 23.1546 110 -0.01 98
IV.CESI.HHZ. 2021-03-16T15:17:17.65 0.1 positive manual P 313 25.9518 108 -0.05 97
IV.CSP1.EHZ. 2021-03-16T15:17:17.79 0.1 undecidable manual P 11 27.8499 107 -0.27 92
IV.T1299.HNZ. 2021-03-16T15:17:17.77 0.1 undecidable manual P 153 26.1516 108 0.04 97
IV.MC2.EHZ. 2021-03-16T15:17:16.42 0.1 undecidable manual S 29 8.3805 135 0.09 99
IT.MTCL.HGZ. 2021-03-16T15:17:16.44 0.3 undecidable manual P 326 20.0688 112 -0.13 72
IV.FEMA.HNZ. 2021-03-16T15:17:15.75 0.3 undecidable manual P 331 14.874 119 0.11 73
IV.MMO1.EHZ. 2021-03-16T15:17:15.80 0.1 undecidable manual P 68 16.3725 117 -0.12 97
IV.NRCA.HNZ. 2021-03-16T15:17:14.50 0.1 undecidable manual S 237 2.3976 164 -0.73 84
IV.MC2.EHZ. 2021-03-16T15:17:14.56 0.1 undecidable manual P 29 8.3805 135 -0.04 100
IV.NRCA.HNZ. 2021-03-16T15:17:13.61 0.1 positive manual P 237 2.3976 164 -0.35 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:0.0 0.0055692365 0.3712 AML other m 2021-03-16T15:17:14.59
IV.NRCA.HHN. ML:0.0 0.005514608 0.128 AML other m 2021-03-16T15:17:14.59
IV.NRCA.HNE. ML:0.0 0.0047974655 0.064 AML other m 2021-03-16T15:17:14.62
IV.NRCA.HHE. ML:0.0 0.005670652000000001 0.0768 AML other m 2021-03-16T15:17:14.62
IV.MTRA.EHE. ML:1.3 0.00013808197 0.2048 AML other m 2021-03-16T15:17:20.97
IV.MTRA.EHN. ML:1.6 0.0002451162 0.3712 AML other m 2021-03-16T15:17:21.50
IV.MTRA.HNN. ML:1.6 0.00025278080000000003 0.384 AML other m 2021-03-16T15:17:21.50
IV.CESI.HHE. ML:1.5 0.0001686666 0.2176 AML other m 2021-03-16T15:17:22.16
IV.CSP1.EHE. ML:1.9 0.00039924475 0.3584 AML other m 2021-03-16T15:17:22.47
IV.GUMA.HHN. ML:2.0 0.0005490639500000001 0.2176 AML other m 2021-03-16T15:17:23.28
IV.LNSS.HHE. ML:1.9 0.000393 0.36 AML other m 2021-03-16T15:17:23.14
IV.LNSS.HNE. ML:1.9 0.0004053088 0.3584 AML other m 2021-03-16T15:17:23.33
IV.LNSS.HHN. ML:1.8 0.00030100000000000005 0.2 AML other m 2021-03-16T15:17:23.34
IV.MTRA.HNE. ML:1.7 0.00031083815 0.2688 AML other m 2021-03-16T15:17:21.87
IV.CSP1.EHN. ML:1.9 0.0003920885 0.3072 AML other m 2021-03-16T15:17:22.62
IV.GUMA.HNN. ML:1.8 0.0003660888 0.2816 AML other m 2021-03-16T15:17:23.42
IV.CESI.HNN. ML:1.7 0.00031951010000000004 0.9984 AML other m 2021-03-16T15:17:22.82
IV.CESI.HHN. ML:1.6 0.00022300895 0.6144 AML other m 2021-03-16T15:17:22.02
IV.RM33.EHN. ML:1.5 0.00010960000000000001 0.28 AML other m 2021-03-16T15:17:25.99
IV.RM33.HNN. ML:1.6 0.00013622005 0.2944 AML other m 2021-03-16T15:17:25.00
IV.GUMA.HNE. ML:1.9 0.00037005189999999997 0.5376 AML other m 2021-03-16T15:17:23.26
IV.GUMA.HHE. ML:1.9 0.0004290925 0.2048 AML other m 2021-03-16T15:17:23.25
IV.RM33.EHE. ML:1.2 0.00006322237499999999 0.2816 AML other m 2021-03-16T15:17:25.52
IV.TERO.HHE. ML:1.2 0.00005014113000000001 0.2944 AML other m 2021-03-16T15:17:30.41
IV.TERO.HHN. ML:1.3 0.000055069565 0.6784 AML other m 2021-03-16T15:17:27.30
IV.EL6.EHE. ML:1.5 0.000067907495 0.6016 AML other m 2021-03-16T15:17:30.46
IV.EL6.EHN. ML:1.6 0.00010545618000000001 0.32 AML other m 2021-03-16T15:17:33.02
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