Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 17-03-2021 and time 09:42:16 (UTC) in region 6 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 1.6 earthquake occured in region: 6 km SE Castelsantangelo sul Nera (MC), on

  • 17-03-2021 09:42:16 (UTC)
  • 17-03-2021 10:42:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8480, 13.1930 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
Castelsantangelo sul Nera MC 6 281 281
Norcia PG 10 4957 5238
Montegallo AP 12 523 5761
Ussita MC 12 444 6205
Arquata del Tronto AP 12 1178 7383
Montemonaco AP 12 604 7987
Visso MC 13 1107 9094
Preci PG 13 724 9818
Montefortino FM 16 1178 10996
Bolognola MC 17 142 11138
Accumoli RI 18 667 11805
Acquasanta Terme AP 20 2916 14721
Amandola FM 20 3629 18350

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
55 Km NE of Terni (111501 inhabitants)
58 Km NW of L'Aquila (69753 inhabitants)
72 Km E of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
94 Km W of Pescara (121014 inhabitants)
97 Km NW of Chieti (51815 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 1.6 2021-03-17
09:42:16		 42.8483 13.1928 9 2021-07-12
16:55:13		 Bollettino Sismico Italiano INGV 90573831
Reviewed
Rev100 		ML 1.6 2021-03-17
09:42:16		 42.8573 13.2032 10 2021-03-17
09:48:58		 Sala Sismica INGV-Roma 88210431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-17 09:42:16 ± 0.05
Latitude 42.8483 ± 0.0027
Longitude 13.1928 ± 0.0049
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 90573831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 281
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 64
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) 59
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.05936
Epicentral distance of station farthest from the epicenter (degree) 0.64032
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 88210431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-17 09:48:58

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 41
Type of magnitude ML
Reference to an origin 90573831
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-28 16:38:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-03-17T09:42:33.58 0.6 undecidable manual S 352 53.9016 50 -0.01 47
IV.MNTT.EHZ. 2021-03-17T09:42:31.51 0.6 undecidable manual S 54 40.4262 50 1.52 27
IV.TERO.HHZ. 2021-03-17T09:42:30.07 0.6 undecidable manual S 127 41.8248 50 -0.3 45
IV.CAMP.HHZ. 2021-03-17T09:42:29.22 0.6 undecidable manual S 153 38.9277 50 -0.37 45
IV.RM33.EHZ. 2021-03-17T09:42:29.59 0.6 undecidable manual S 177 37.629 50 0.32 45
IV.SAP2.EHZ. 2021-03-17T09:42:28.05 0.6 undecidable manual S 31 32.2455 50 0.24 46
IV.MURB.HHZ. 2021-03-17T09:42:28.96 0.3 undecidable manual P 311 71.0733 50 0.01 68
IV.GAVE.EHZ. 2021-03-17T09:42:27.31 0.6 undecidable manual S 235 29.8479 107 0.14 48
IV.LNSS.HHZ. 2021-03-17T09:42:27.15 0.6 undecidable manual S 205 29.9478 107 -0.05 48
IV.ATCC.EHZ. 2021-03-17T09:42:26.93 0.3 undecidable manual P 310 58.3971 50 -0.06 69
IV.MOMA.HHZ. 2021-03-17T09:42:26.01 0.3 undecidable manual P 265 50.9157 50 0.17 68
IV.GUMA.HNN. 2021-03-17T09:42:26.72 0.6 undecidable manual S 26 26.4513 109 0.67 41
IV.MF5.EHZ. 2021-03-17T09:42:26.22 0.6 undecidable manual S 54 26.6511 109 0.11 48
IV.CESI.HHZ. 2021-03-17T09:42:26.71 0.6 undecidable manual S 307 29.1486 107 -0.23 47
IV.EL6.EHZ. 2021-03-17T09:42:26.09 0.3 undecidable manual P 352 53.9016 50 -0.21 67
IV.CSP1.EHZ. 2021-03-17T09:42:25.55 0.6 undecidable manual S 2 27.0507 109 -0.69 41
IV.MNTT.EHZ. 2021-03-17T09:42:24.68 0.3 undecidable manual P 54 40.4262 50 0.46 65
IV.FDMO.HHZ. 2021-03-17T09:42:24.35 0.6 undecidable manual S 338 22.5552 112 -0.44 45
IV.TERO.HHZ. 2021-03-17T09:42:24.01 0.3 undecidable manual P 127 41.8248 50 -0.42 66
IV.RM33.EHZ. 2021-03-17T09:42:23.78 0.3 undecidable manual P 177 37.629 50 -0.02 72
IV.CAMP.HHZ. 2021-03-17T09:42:23.82 0.3 undecidable manual P 153 38.9277 50 -0.17 70
IV.FEMA.HNZ. 2021-03-17T09:42:23.20 0.6 undecidable manual S 317 17.1717 118 0.11 49
IV.MTRA.HNZ. 2021-03-17T09:42:23.63 0.6 undecidable manual S 121 19.4694 115 -0.17 48
IV.MF5.EHZ. 2021-03-17T09:42:22.06 0.3 undecidable manual P 54 26.6511 109 0.08 73
IV.SAP2.EHZ. 2021-03-17T09:42:22.96 0.3 undecidable manual P 31 32.2455 50 0 73
IV.CESI.HHZ. 2021-03-17T09:42:22.26 0.1 undecidable manual P 307 29.1486 107 -0.2 94
IV.GAVE.EHZ. 2021-03-17T09:42:22.57 0.1 undecidable manual P 235 29.8479 107 -0.02 97
IV.LNSS.HHZ. 2021-03-17T09:42:22.62 0.1 negative manual P 205 29.9478 107 0.02 98
IV.MMO1.EHZ. 2021-03-17T09:42:21.25 0.6 undecidable manual S 62 12.2766 127 -0.4 46
IV.FDMO.HHZ. 2021-03-17T09:42:21.00 0.1 positive manual P 338 22.5552 112 -0.22 95
IV.GUMA.HNN. 2021-03-17T09:42:21.92 0.1 undecidable manual P 26 26.4513 109 -0.02 98
IV.CSP1.EHZ. 2021-03-17T09:42:21.70 0.1 negative manual P 2 27.0507 109 -0.35 91
IV.FEMA.HNZ. 2021-03-17T09:42:20.40 0.3 undecidable manual P 317 17.1717 118 0.17 73
IV.MC2.EHZ. 2021-03-17T09:42:20.54 0.6 undecidable manual S 357 6.993 143 0.2 49
IV.NRCA.HNZ. 2021-03-17T09:42:20.58 0.6 undecidable manual S 256 6.5934 144 0.32 48
IV.MTRA.HNZ. 2021-03-17T09:42:20.60 0.3 undecidable manual P 121 19.4694 115 -0.04 74
IV.MMO1.EHZ. 2021-03-17T09:42:19.36 0.1 undecidable manual P 62 12.2766 127 -0.05 100
IV.MC2.EHZ. 2021-03-17T09:42:18.91 0.1 undecidable manual P 357 6.993 143 0.26 96
IV.NRCA.HNZ. 2021-03-17T09:42:18.99 0.1 positive manual P 256 6.5934 144 0.39 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.3 0.0036471455000000002 0.16 AML other m 2021-03-17T09:42:20.72
IV.NRCA.HNN. ML:2.2 0.0028824199999999997 0.0704 AML other m 2021-03-17T09:42:20.72
IV.NRCA.HHE. ML:2.2 0.0025901745 0.0576 AML other m 2021-03-17T09:42:20.70
IV.NRCA.HNE. ML:2.2 0.0024011005 0.0704 AML other m 2021-03-17T09:42:20.70
IV.FEMA.HNE. ML:2.0 0.0009045821000000001 0.1664 AML other m 2021-03-17T09:42:23.34
IV.FEMA.HNN. ML:1.7 0.0004495785 0.1024 AML other m 2021-03-17T09:42:23.37
IV.MTRA.EHN. ML:1.5 0.00024801445 0.0832 AML other m 2021-03-17T09:42:24.57
IV.MTRA.HNN. ML:1.5 0.00025909181 0.0832 AML other m 2021-03-17T09:42:24.57
IV.FDMO.HHE. ML:1.7 0.0003215 0.2 AML other m 2021-03-17T09:42:24.72
IV.FDMO.HHN. ML:1.9 0.000524 0.2 AML other m 2021-03-17T09:42:24.69
IV.MTRA.EHE. ML:1.5 0.00025197585 0.2368 AML other m 2021-03-17T09:42:26.20
IV.MTRA.HNE. ML:1.6 0.00029279710000000006 0.2624 AML other m 2021-03-17T09:42:26.20
IV.CSP1.EHE. ML:1.9 0.000393 0.22 AML other m 2021-03-17T09:42:26.74
IV.MF5.EHN. ML:1.7 0.0002945 0.24 AML other m 2021-03-17T09:42:26.79
IV.MF5.EHE. ML:1.9 0.00045900000000000004 0.2 AML other m 2021-03-17T09:42:26.90
IV.CSP1.EHN. ML:1.8 0.00034550000000000005 0.74 AML other m 2021-03-17T09:42:26.95
IV.CESI.HNE. ML:1.5 0.00014528565 1.8208 AML other m 2021-03-17T09:42:26.99
IV.CESI.HNN. ML:1.8 0.0002851323 0.1216 AML other m 2021-03-17T09:42:27.08
IV.CESI.HHN. ML:1.8 0.0003105 0.1 AML other m 2021-03-17T09:42:27.07
IV.CESI.HHE. ML:1.6 0.000180036 0.1408 AML other m 2021-03-17T09:42:27.14
IV.LNSS.HHE. ML:1.7 0.0002255988 0.2048 AML other m 2021-03-17T09:42:27.88
IV.LNSS.HHN. ML:1.7 0.00024081185 0.2816 AML other m 2021-03-17T09:42:28.24
IV.SAP2.EHE. ML:1.7 0.000219 0.14 AML other m 2021-03-17T09:42:28.29
IV.SAP2.EHN. ML:2.6 0.0016899999999999999 0.18 AML other m 2021-03-17T09:42:28.35
IV.CAMP.HHE. ML:1.6 0.00013450000000000002 0.24 AML other m 2021-03-17T09:42:29.58
IV.CAMP.HHN. ML:1.4 0.000082528755 0.1984 AML other m 2021-03-17T09:42:29.66
IV.RM33.EHN. ML:1.0 0.000038091725 0.096 AML other m 2021-03-17T09:42:30.33
IV.TERO.HHN. ML:1.5 0.00010297139 0.0768 AML other m 2021-03-17T09:42:30.63
IV.TERO.HHE. ML:1.4 0.0000767 0.34 AML other m 2021-03-17T09:42:31.49
IV.MNTT.EHN. ML:2.2 0.000587 0.3 AML other m 2021-03-17T09:42:31.66
IV.RM33.EHE. ML:1.0 0.000040628355 0.3392 AML other m 2021-03-17T09:42:32.35
IV.MNTT.EHE. ML:2.4 0.0009609999999999999 0.18 AML other m 2021-03-17T09:42:33.51
IV.MOMA.HHN. ML:1.4 0.00005989999999999999 0.2 AML other m 2021-03-17T09:42:35.13
IV.EL6.EHN. ML:1.6 0.000098910835 0.2176 AML other m 2021-03-17T09:42:35.31
IV.MOMA.HHE. ML:1.3 0.00005593133 0.16 AML other m 2021-03-17T09:42:35.89
IV.RM33.HNE. ML:1.6 0.00014416015 1.104 AML other m 2021-03-17T09:42:35.84
IV.ATCC.EHN. ML:1.2 0.000034716385000000004 0.2432 AML other m 2021-03-17T09:42:37.23
IV.EL6.EHE. ML:1.3 0.0000440202405 0.1984 AML other m 2021-03-17T09:42:37.16
IV.ATCC.EHE. ML:1.3 0.000038509075000000005 0.1984 AML other m 2021-03-17T09:42:37.47
IV.MURB.HHN. ML:1.4 0.00004622013 0.2624 AML other m 2021-03-17T09:42:45.66
IV.MURB.HHE. ML:1.4 0.0000468342 0.3968 AML other m 2021-03-17T09:42:48.63
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