Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 11-03-2021 and time 05:23:01 (Italy) in region 4 km SW Accumoli (RI)

A magnitude ML 2.0 earthquake occured in region: 4 km SW Accumoli (RI), on

  • 11-03-2021 04:23:01 (UTC)
  • 11-03-2021 05:23:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.6750, 13.2020 at 11 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
Accumoli RI 5 667 667
Cittareale RI 7 482 1149
Amatrice RI 9 2657 3806
Arquata del Tronto AP 14 1178 4984
Norcia PG 16 4957 9941
Cascia PG 16 3217 13158
Montereale AQ 17 2581 15739
Posta RI 19 694 16433
Borbona RI 19 617 17050
Campotosto AQ 19 542 17592
Capitignano AQ 19 665 18257

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NW of L'Aquila (69753 inhabitants)
41 Km W of Teramo (54892 inhabitants)
47 Km E of Terni (111501 inhabitants)
51 Km SE of Foligno (57155 inhabitants)
80 Km W of Montesilvano (53738 inhabitants)
82 Km SE of Perugia (166134 inhabitants)
85 Km NE of Guidonia Montecelio (88673 inhabitants)
86 Km NE of Tivoli (56533 inhabitants)
86 Km W of Pescara (121014 inhabitants)
87 Km W of Chieti (51815 inhabitants)
94 Km E of Viterbo (67173 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
04:23:01		 42.6752 13.2017 11 2021-07-12
16:55:02		 Bollettino Sismico Italiano INGV 88159941
Reviewed
Rev100 		ML 2.1 2021-03-11
04:23:01		 42.6777 13.2093 12 2021-03-11
04:31:25		 Sala Sismica INGV-Roma 87988041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-11 04:23:01 ± 0.05
Latitude 42.6752 ± 0.0027
Longitude 13.2017 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88159941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 326
Semi-minor axis of confidence ellipse (meter) 268
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 89
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 41
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 50
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.67269
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 50
Type of magnitude ML
Reference to an origin 88159941
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-22 17:34:56

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 36
Type of magnitude ML
Reference to an origin 87988041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-11 04:31:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRSN.HNZ. 2021-03-11T04:23:33.86 3.0 negative manual Pg 2.6 0
IV.CSP1.EHZ. 2021-03-11T04:23:16.12 0.3 undecidable manual S 0 46.2204 50 0.12 72
IV.GUMA.HHZ. 2021-03-11T04:23:16.29 0.3 undecidable manual S 14 44.3223 50 0.79 63
IV.CESI.HHZ. 2021-03-11T04:23:15.23 0.3 undecidable manual S 327 43.8228 50 -0.14 69
IV.FIAM.HHZ. 2021-03-11T04:23:15.69 0.3 undecidable manual S 189 45.7209 50 -0.17 70
IV.SRES.HHZ. 2021-03-11T04:23:14.40 0.1 undecidable manual P 230 74.6697 50 0.3 87
IV.FDMO.HHZ. 2021-03-11T04:23:14.34 0.3 undecidable manual S 347 41.1255 50 -0.31 66
IV.GIGS.HHZ. 2021-03-11T04:23:13.71 0.3 undecidable manual S 129 39.0276 50 -0.38 67
IT.MTCL.HGZ. 2021-03-11T04:23:13.81 0.6 undecidable manual S 335 39.0276 50 -0.26 45
IV.ATCC.EHZ. 2021-03-11T04:23:13.69 0.6 undecidable manual P 321 72.6717 50 -0.12 44
IV.FEMA.HNZ. 2021-03-11T04:23:12.76 0.3 undecidable manual S 339 34.1436 50 -0.02 71
IV.VCEL.EHZ. 2021-03-11T04:23:12.23 0.3 undecidable manual P 121 60.7947 50 0.26 68
IV.TERO.HHZ. 2021-03-11T04:23:12.06 0.3 undecidable manual S 100 33.3444 50 -0.5 64
IV.MNTT.EHZ. 2021-03-11T04:23:11.65 0.3 undecidable manual P 37 53.502 50 0.79 60
IV.FAGN.HHZ. 2021-03-11T04:23:11.37 0.1 undecidable manual P 145 55.1004 50 0.27 91
IV.MOMA.HHZ. 2021-03-11T04:23:11.07 0.3 undecidable manual P 286 53.4021 50 0.24 69
IV.GAVE.EHZ. 2021-03-11T04:23:10.21 0.3 undecidable manual S 274 25.1526 50 -0.17 72
IV.MMO1.EHZ. 2021-03-11T04:23:10.48 0.3 undecidable manual S 22 26.8509 50 -0.36 67
IV.CESX.HHZ. 2021-03-11T04:23:10.28 0.1 undecidable manual P 262 50.7159 50 -0.14 92
IV.MC2.EHZ. 2021-03-11T04:23:10.92 0.6 undecidable manual S 358 26.2515 50 0.25 49
IV.OFFI.HHZ. 2021-03-11T04:23:10.99 0.3 undecidable manual P 54 48.8178 50 0.86 59
IV.SAP2.EHZ. 2021-03-11T04:23:10.61 0.3 undecidable manual P 19 49.4172 50 0.39 68
IV.CSP1.EHZ. 2021-03-11T04:23:09.78 0.3 undecidable manual P 0 46.2204 50 0.05 72
IV.FIAM.HHZ. 2021-03-11T04:23:09.62 0.3 undecidable manual P 189 45.7209 50 -0.03 72
IV.MF5.EHZ. 2021-03-11T04:23:09.19 0.1 undecidable manual P 31 40.5261 50 0.34 94
IV.GUMA.HHZ. 2021-03-11T04:23:09.68 0.3 undecidable manual P 14 44.3223 50 0.24 71
IV.CAMP.HHZ. 2021-03-11T04:23:09.39 0.6 undecidable manual S 132 22.9548 50 -0.4 46
IV.CESI.HHZ. 2021-03-11T04:23:09.29 0.3 undecidable manual P 327 43.8228 50 -0.07 70
IV.FDMO.HHZ. 2021-03-11T04:23:08.80 0.3 undecidable manual P 347 41.1255 50 -0.15 69
IV.ARRO.EHZ. 2021-03-11T04:23:08.12 0.1 undecidable manual P 253 37.1295 50 -0.21 93
IV.NRCA.HNZ. 2021-03-11T04:23:08.26 0.1 undecidable manual S 338 18.9699 50 -0.47 90
IV.RM33.EHZ. 2021-03-11T04:23:08.43 0.3 undecidable manual S 177 18.4704 120 -0.16 75
IV.GIGS.HHZ. 2021-03-11T04:23:08.29 0.3 undecidable manual P 129 39.0276 50 -0.34 68
IT.MTCL.HGZ. 2021-03-11T04:23:08.40 0.3 undecidable manual P 335 39.0276 50 -0.21 69
MN.AQU.HNZ. 2021-03-11T04:23:08.41 0.6 undecidable manual P 155 39.3273 50 -0.25 46
IV.MTRA.EHZ. 2021-03-11T04:23:07.98 0.1 undecidable manual S 60 18.2706 121 -0.55 88
IV.FEMA.HNZ. 2021-03-11T04:23:07.63 0.6 undecidable manual P 339 34.1436 50 -0.24 46
IV.LNSS.HHZ. 2021-03-11T04:23:07.70 0.3 undecidable manual S 239 15.3735 125 0 76
IV.TERO.HHZ. 2021-03-11T04:23:07.49 0.1 positive manual P 100 33.3444 50 -0.25 93
IV.CAMP.HHZ. 2021-03-11T04:23:06.14 0.1 positive manual P 132 22.9548 50 0 100
IV.GAVE.EHZ. 2021-03-11T04:23:06.52 0.1 positive manual P 274 25.1526 50 0.04 100
IV.SMA1.EHZ. 2021-03-11T04:23:06.83 0.3 undecidable manual S 114 11.9769 132 0.07 76
IV.MMO1.EHZ. 2021-03-11T04:23:06.59 0.3 undecidable manual P 22 26.8509 50 -0.16 71
IV.MC2.EHZ. 2021-03-11T04:23:06.67 0.3 undecidable manual P 358 26.2515 50 0.02 74
IV.LNSS.HHZ. 2021-03-11T04:23:05.19 0.1 positive manual P 239 15.3735 125 0.26 97
IV.T1299.EHZ. 2021-03-11T04:23:05.80 0.3 undecidable manual S 125 7.9809 144 -0.03 77
IV.MTRA.EHZ. 2021-03-11T04:23:05.31 0.1 undecidable manual P 60 18.2706 121 -0.1 99
IV.NRCA.HNZ. 2021-03-11T04:23:05.42 0.1 undecidable manual P 338 18.9699 50 -0.11 98
IV.RM33.EHZ. 2021-03-11T04:23:05.60 0.1 positive manual P 177 18.4704 120 0.15 98
IV.T1299.EHZ. 2021-03-11T04:23:04.16 0.1 undecidable manual P 125 7.9809 144 0.31 97
IV.SMA1.EHZ. 2021-03-11T04:23:04.67 0.1 positive manual P 114 11.9769 132 0.28 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:2.5 0.00333 0.32 AML other m 2021-03-11T04:23:07.48
IV.LNSS.HNE. ML:2.2 0.0015300000000000001 0.34 AML other m 2021-03-11T04:23:08.21
IV.LNSS.HHE. ML:2.3 0.00165 0.34 AML other m 2021-03-11T04:23:08.21
IV.SMA1.EHN. ML:2.3 0.0023650000000000003 0.94 AML other m 2021-03-11T04:23:08.12
IV.MTRA.EHN. ML:2.1 0.0008990000000000001 0.32 AML other m 2021-03-11T04:23:08.21
IV.MTRA.HNN. ML:2.1 0.0009279999999999999 0.32 AML other m 2021-03-11T04:23:08.21
IV.MTRA.HNE. ML:2.2 0.00127 1.1 AML other m 2021-03-11T04:23:08.93
IV.LNSS.HHN. ML:2.2 0.0015899999999999998 0.22 AML other m 2021-03-11T04:23:08.28
IV.LNSS.HNN. ML:2.2 0.0014249999999999998 0.22 AML other m 2021-03-11T04:23:08.39
IV.NRCA.HHN. ML:2.1 0.0009655 0.18 AML other m 2021-03-11T04:23:08.46
IV.NRCA.HNN. ML:2.0 0.000814 0.2 AML other m 2021-03-11T04:23:08.46
IV.NRCA.HNE. ML:2.2 0.0011539999999999999 0.18 AML other m 2021-03-11T04:23:08.69
IV.NRCA.HHE. ML:2.2 0.0012250000000000002 0.18 AML other m 2021-03-11T04:23:08.69
IV.RM33.HNN. ML:2.1 0.001095 0.18 AML other m 2021-03-11T04:23:08.84
IV.RM33.EHN. ML:2.1 0.0010750000000000002 0.18 AML other m 2021-03-11T04:23:08.85
IV.MTRA.EHE. ML:2.2 0.00121 1.5 AML other m 2021-03-11T04:23:09.19
IV.RM33.HNE. ML:1.9 0.0006850000000000001 0.46 AML other m 2021-03-11T04:23:09.42
IV.CAMP.HHN. ML:1.4 0.0001725 0.36 AML other m 2021-03-11T04:23:09.87
IV.CAMP.HHE. ML:1.6 0.00028349999999999995 1.54 AML other m 2021-03-11T04:23:10.77
IV.RM33.EHE. ML:1.9 0.0006445000000000001 0.68 AML other m 2021-03-11T04:23:10.42
IV.GAVE.EHN. ML:2.3 0.00125 0.28 AML other m 2021-03-11T04:23:10.83
IV.GAVE.EHE. ML:2.3 0.001052 1.3 AML other m 2021-03-11T04:23:10.25
IV.TERO.HHE. ML:1.7 0.00022899999999999998 1.74 AML other m 2021-03-11T04:23:12.95
IV.TERO.HHN. ML:1.8 0.00028450000000000003 0.08 AML other m 2021-03-11T04:23:13.00
IV.FDMO.HHN. ML:1.5 0.00009609999999999999 0.26 AML other m 2021-03-11T04:23:15.62
IV.CESI.HHN. ML:1.8 0.0001865 1.68 AML other m 2021-03-11T04:23:15.90
IV.FIAM.HHN. ML:1.5 0.0000857 0.26 AML other m 2021-03-11T04:23:16.49
IV.GUMA.HHE. ML:2.4 0.0008200000000000001 0.34 AML other m 2021-03-11T04:23:16.87
IV.GUMA.HNE. ML:2.3 0.0005669999999999999 0.3 AML other m 2021-03-11T04:23:16.86
IV.FIAM.HHE. ML:1.5 0.00008679999999999998 0.28 AML other m 2021-03-11T04:23:16.72
IV.GUMA.HNN. ML:2.3 0.0006105 1.5 AML other m 2021-03-11T04:23:16.90
IV.CESI.HHE. ML:1.6 0.0001105 0.26 AML other m 2021-03-11T04:23:16.78
IV.MF5.EHN. ML:1.8 0.00020400000000000003 1.16 AML other m 2021-03-11T04:23:16.37
IV.GUMA.HHN. ML:2.3 0.000647 1.62 AML other m 2021-03-11T04:23:16.17
IV.CSP1.EHN. ML:2.1 0.0003675 0.28 AML other m 2021-03-11T04:23:17.17
IV.FDMO.HHE. ML:1.6 0.000121 0.58 AML other m 2021-03-11T04:23:17.41
IV.MF5.EHE. ML:1.8 0.000234 0.88 AML other m 2021-03-11T04:23:18.15
IV.CESX.HHN. ML:1.5 0.00008595 1.14 AML other m 2021-03-11T04:23:19.01
IV.CSP1.EHE. ML:2.0 0.00028050000000000004 0.42 AML other m 2021-03-11T04:23:20.25
IV.MOMA.HHE. ML:1.9 0.00019 0.18 AML other m 2021-03-11T04:23:20.43
IV.CESX.HHE. ML:1.6 0.0000994 0.58 AML other m 2021-03-11T04:23:20.47
IV.MOMA.HHN. ML:2.0 0.00023150000000000002 0.2 AML other m 2021-03-11T04:23:20.60
IV.FAGN.HHN. ML:1.8 0.00012984999999999998 0.42 AML other m 2021-03-11T04:23:20.44
IV.VCEL.EHE. ML:2.0 0.0002225 1.38 AML other m 2021-03-11T04:23:22.13
IV.VCEL.EHN. ML:2.1 0.00027949999999999996 0.44 AML other m 2021-03-11T04:23:22.96
IV.FAGN.HHE. ML:1.8 0.0001453 0.32 AML other m 2021-03-11T04:23:23.83
IV.MNTT.EHN. ML:2.1 0.0003165 0.38 AML other m 2021-03-11T04:23:23.73
IV.MNTT.EHE. ML:2.3 0.00047750000000000006 0.62 AML other m 2021-03-11T04:23:24.62
IV.ATCC.EHE. ML:1.6 0.00006759999999999999 1.08 AML other m 2021-03-11T04:23:25.96
IV.ATCC.EHN. ML:1.6 0.00006470000000000001 0.42 AML other m 2021-03-11T04:23:29.57
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