Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 09-05-2021 and time 18:49:20 (Italy) in region 4 km NE Configni (RI)

A magnitude ML 2.1 earthquake occured in region: 4 km NE Configni (RI), on

  • 09-05-2021 16:49:20 (UTC)
  • 09-05-2021 18:49:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4490, 12.6770 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
Configni RI 4 633 633
Cottanello RI 5 563 1196
Stroncone TR 6 4917 6113
Montasola RI 7 395 6508
Vacone RI 8 256 6764
Greccio RI 8 1558 8322
Contigliano RI 9 3783 12105
Colli sul Velino RI 10 533 12638
Calvi dell'Umbria TR 10 1856 14494
Torri in Sabina RI 11 1256 15750
Montebuono RI 11 883 16633
Casperia RI 12 1246 17879
Tarano RI 12 1444 19323
Terni TR 13 111501 130824
Labro RI 13 374 131198
Roccantica RI 14 563 131761
Selci RI 15 1106 132867
Narni TR 15 19785 152652
Morro Reatino RI 16 373 153025
Monte San Giovanni in Sabina RI 16 714 153739
Cantalupo in Sabina RI 16 1685 155424
Rieti RI 16 47698 203122
Collevecchio RI 16 1577 204699
Otricoli TR 16 1869 206568
Rivodutri RI 17 1253 207821
Arrone TR 17 2763 210584
Poggio Catino RI 17 1341 211925
Forano RI 18 3179 215104
Montefranco TR 18 1276 216380
Poggio Bustone RI 18 2055 218435
Magliano Sabina RI 19 3774 222209
Cantalice RI 19 2755 224964
Stimigliano RI 19 2328 227292

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km S of Terni (111501 inhabitants)
47 Km E of Viterbo (67173 inhabitants)
50 Km N of Guidonia Montecelio (88673 inhabitants)
55 Km N of Tivoli (56533 inhabitants)
57 Km S of Foligno (57155 inhabitants)
60 Km W of L'Aquila (69753 inhabitants)
64 Km N of Roma (2864731 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
83 Km E of Civitavecchia (52991 inhabitants)
83 Km NE of Fiumicino (78395 inhabitants)
85 Km N of Velletri (53303 inhabitants)
88 Km W of Teramo (54892 inhabitants)
88 Km N of Pomezia (62966 inhabitants)
95 Km N of Aprilia (73446 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 2.1 2021-05-09
16:49:20		 42.4488 12.6767 8 2021-12-29
11:12:05		 Bollettino Sismico Italiano INGV 91308621
Reviewed
Rev100 		ML 2.1 2021-05-09
16:49:20		 42.4513 12.6697 8 2021-05-09
16:55:50		 Sala Sismica INGV-Roma 89946411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-09 16:49:20 ± 0.08
Latitude 42.4488 ± 0.0036
Longitude 12.6767 ± 0.0061
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 91308621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 448
Semi-minor axis of confidence ellipse (meter) 202
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 268
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.16372
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 46
Type of magnitude ML
Reference to an origin 91308621
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-08-08 23:08:07

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 46
Type of magnitude ML
Reference to an origin 89946411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-09 16:55:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.TRI.HHZ. 2021-05-09T16:51:00.53 3.0 undecidable manual Sg 6.9 0
IV.SNAL.HHZ. 2021-05-09T16:50:40.73 3.0 undecidable manual Sg 9.74 0
IV.FDMO.HHZ. 2021-05-09T16:49:44.12 0.6 undecidable manual S 27 73.2711 50 0.53 40
IV.NARO.HHZ. 2021-05-09T16:49:43.28 0.6 undecidable manual P 357 129.1707 50 0.68 34
IV.CESI.HHZ. 2021-05-09T16:49:41.90 0.6 undecidable manual S 17 64.3911 50 0.67 39
IV.LRP.EHZ. 2021-05-09T16:49:41.75 3.0 undecidable manual P 0.49 0
IV.ASSB.HHZ. 2021-05-09T16:49:40.67 0.6 undecidable manual S 359 65.8896 50 -0.95 34
IV.SMA1.EHZ. 2021-05-09T16:49:40.00 0.6 undecidable manual S 69 57.498 50 0.62 40
IV.CERT.HHZ. 2021-05-09T16:49:40.50 0.6 undecidable manual S 156 60.8946 50 0.22 44
IV.ATMI.HHZ. 2021-05-09T16:49:39.20 0.3 undecidable manual P 341 103.7184 50 0.52 57
IV.NRCA.HHZ. 2021-05-09T16:49:38.80 0.3 undecidable manual S 40 55.5999 50 -0.09 69
IV.EL6.EHZ. 2021-05-09T16:49:38.82 0.1 positive manual P 19 103.6185 50 0.16 83
IV.MURB.HHZ. 2021-05-09T16:49:37.24 0.3 undecidable manual P 352 91.1421 50 0.49 59
IV.RM33.EHZ. 2021-05-09T16:49:36.08 0.6 undecidable manual S 81 44.5221 50 0.17 46
IV.MF5.EHZ. 2021-05-09T16:49:36.51 0.6 undecidable manual P 47 87.4458 50 0.34 41
IV.MOMA.HHZ. 2021-05-09T16:49:35.00 0.6 undecidable manual S 348 40.3263 50 0.2 46
IV.CSP1.EHZ. 2021-05-09T16:49:35.48 0.3 undecidable manual P 31 83.25 50 -0.05 66
IV.FIAM.HHZ. 2021-05-09T16:49:35.10 0.3 undecidable manual S 119 41.3253 50 0.04 72
IV.ATCC.EHZ. 2021-05-09T16:49:35.51 0.3 undecidable manual P 358 81.7515 50 0.22 64
IV.TERO.HHZ. 2021-05-09T16:49:34.50 0.3 undecidable manual P 75 78.1662 50 -0.25 64
IV.FDMO.HHZ. 2021-05-09T16:49:33.76 0.1 negative manual P 27 73.2711 50 -0.23 87
IV.MGAB.HHZ. 2021-05-09T16:49:33.24 0.3 undecidable manual P 318 69.0753 50 -0.1 67
IV.GAVE.EHZ. 2021-05-09T16:49:32.50 0.6 undecidable manual S 33 32.3454 104 0.08 48
IV.MC2.EHZ. 2021-05-09T16:49:32.80 0.3 undecidable manual P 39 66.1893 50 -0.1 68
IV.CESI.HHZ. 2021-05-09T16:49:32.49 0.1 negative manual P 17 64.3911 50 -0.14 90
IV.LNSS.HHZ. 2021-05-09T16:49:32.90 0.3 undecidable manual S 60 34.2435 103 -0.19 70
IV.ASSB.HHZ. 2021-05-09T16:49:32.64 0.1 undecidable manual P 359 65.8896 50 -0.21 88
IV.CERT.HHZ. 2021-05-09T16:49:32.02 0.6 undecidable manual P 156 60.8946 50 -0.06 46
IV.SMA1.EHZ. 2021-05-09T16:49:31.55 0.1 undecidable manual P 69 57.498 50 -0.01 93
IV.NRCA.HHZ. 2021-05-09T16:49:30.99 0.1 negative manual P 40 55.5999 50 -0.29 89
IV.FIAM.HHZ. 2021-05-09T16:49:29.05 0.1 undecidable manual P 119 41.3253 50 -0.01 96
IV.MTCE.HHZ. 2021-05-09T16:49:29.84 0.3 undecidable manual P 173 47.619 50 -0.19 69
IV.RM33.EHZ. 2021-05-09T16:49:29.40 0.1 undecidable manual P 81 44.5221 50 -0.16 93
IV.MOMA.HHZ. 2021-05-09T16:49:28.30 0.1 negative manual P 348 40.3263 50 -0.61 83
IT.GNU.HGE. 2021-05-09T16:49:28.66 0.3 undecidable manual P 348 40.3263 50 -0.25 69
IV.CESX.HHZ. 2021-05-09T16:49:28.30 0.6 undecidable manual S 337 19.1697 112 0.23 48
IV.ARRO.EHZ. 2021-05-09T16:49:27.18 0.3 undecidable manual S 27 16.1727 116 0.05 75
IV.LNSS.HHZ. 2021-05-09T16:49:27.75 0.1 negative manual P 60 34.2435 103 -0.17 94
IV.GAVE.EHZ. 2021-05-09T16:49:27.32 0.3 undecidable manual P 33 32.3454 104 -0.22 70
IV.SRES.HHN. 2021-05-09T16:49:26.59 0.1 undecidable manual P 210 27.1506 106 0.04 98
IT.MMP1.HGE. 2021-05-09T16:49:25.92 0.1 undecidable manual P 165 22.9548 109 0.19 96
IV.CESX.HHZ. 2021-05-09T16:49:25.02 0.1 negative manual P 337 19.1697 112 -0.01 100
IV.ARRO.EHZ. 2021-05-09T16:49:24.74 0.1 negative manual P 27 16.1727 116 0.25 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:2.2 0.0017050000000000001 0.72 AML other m 2021-05-09T16:49:28.19
IV.ARRO.EHN. ML:2.4 0.00217 0.22 AML other m 2021-05-09T16:49:28.80
IV.CESX.HHE. ML:2.2 0.00143 0.34 AML other m 2021-05-09T16:49:33.52
IV.CESX.HHN. ML:2.3 0.0015400000000000001 1.68 AML other m 2021-05-09T16:49:33.07
IV.LNSS.HHE. ML:2.3 0.000822 0.48 AML other m 2021-05-09T16:49:33.75
IV.GAVE.EHN. ML:2.4 0.00106 0.68 AML other m 2021-05-09T16:49:34.98
IV.GAVE.HNN. ML:2.0 0.000423 0.7 AML other m 2021-05-09T16:49:34.63
IV.GAVE.HNE. ML:2.2 0.0007955 0.98 AML other m 2021-05-09T16:49:35.28
IV.GAVE.EHE. ML:2.2 0.0008065 0.98 AML other m 2021-05-09T16:49:35.28
IV.MOMA.HNE. ML:2.2 0.0005725 0.42 AML other m 2021-05-09T16:49:35.68
IV.MOMA.HHE. ML:2.2 0.0005899999999999999 0.42 AML other m 2021-05-09T16:49:35.69
IV.LNSS.HHN. ML:2.2 0.000696 0.32 AML other m 2021-05-09T16:49:35.64
IV.RM33.EHE. ML:2.1 0.00038449999999999997 1.1 AML other m 2021-05-09T16:49:37.03
IV.RM33.EHN. ML:2.0 0.00029900000000000006 0.72 AML other m 2021-05-09T16:49:37.30
IV.NRCA.HHE. ML:2.2 0.0003325 0.14 AML other m 2021-05-09T16:49:39.52
IV.SMA1.EHE. ML:2.2 0.0003685 0.4 AML other m 2021-05-09T16:49:40.52
IV.NRCA.HHN. ML:2.0 0.0002385 0.54 AML other m 2021-05-09T16:49:41.61
IV.MOMA.HNN. ML:2.0 0.00035499999999999996 0.3 AML other m 2021-05-09T16:49:41.83
IV.MOMA.HHN. ML:2.0 0.0003725 0.28 AML other m 2021-05-09T16:49:41.84
IV.CESI.HHE. ML:2.2 0.0002875 1.66 AML other m 2021-05-09T16:49:42.05
IV.CERT.HHE. ML:1.6 0.00009125 0.34 AML other m 2021-05-09T16:49:43.69
IV.SMA1.EHN. ML:2.2 0.0003135 0.36 AML other m 2021-05-09T16:49:43.59
IV.CESI.HHN. ML:2.2 0.0003265 0.24 AML other m 2021-05-09T16:49:44.26
IV.CERT.HHN. ML:1.7 0.00010899999999999999 0.78 AML other m 2021-05-09T16:49:44.53
IV.FDMO.HHN. ML:2.0 0.000155 0.26 AML other m 2021-05-09T16:49:44.55
IV.FDMO.HHE. ML:2.1 0.0001885 0.28 AML other m 2021-05-09T16:49:44.68
IV.MGAB.HHN. ML:2.0 0.0001655 0.84 AML other m 2021-05-09T16:49:46.31
IV.MGAB.HHE. ML:2.0 0.000175 0.42 AML other m 2021-05-09T16:49:46.77
IV.ASSB.HHE. ML:2.0 0.00018449999999999999 0.52 AML other m 2021-05-09T16:49:47.10
IV.ASSB.HHN. ML:1.9 0.000134 1.62 AML other m 2021-05-09T16:49:48.99
IV.TERO.HHN. ML:1.8 0.0000946 0.46 AML other m 2021-05-09T16:49:49.31
IV.ATCC.EHN. ML:2.1 0.0001545 0.5 AML other m 2021-05-09T16:49:49.60
IV.ATCC.EHE. ML:2.2 0.000219 0.46 AML other m 2021-05-09T16:49:51.84
IV.MURB.HHN. ML:2.3 0.00023750000000000003 1.22 AML other m 2021-05-09T16:49:52.16
IV.TERO.HHE. ML:1.7 0.00007475 0.82 AML other m 2021-05-09T16:49:52.38
IV.CSP1.EHN. ML:2.4 0.00031 1.5 AML other m 2021-05-09T16:49:52.08
IV.MURB.HHE. ML:2.5 0.00039200000000000004 0.36 AML other m 2021-05-09T16:49:54.06
IV.CSP1.EHE. ML:2.3 0.00027049999999999996 0.72 AML other m 2021-05-09T16:49:54.67
IV.EL6.EHE. ML:2.2 0.00016549999999999998 0.82 AML other m 2021-05-09T16:49:54.28
IV.ATMI.HHE. ML:2.3 0.0001805 0.4 AML other m 2021-05-09T16:49:57.66
IV.ATMI.HHN. ML:2.3 0.00020150000000000002 1.14 AML other m 2021-05-09T16:49:57.63
IV.EL6.EHN. ML:2.2 0.0001565 1.48 AML other m 2021-05-09T16:49:59.04
IV.LRP.EHN. ML:1.6 0.00002855 0.74 AML other m 2021-05-09T16:50:06.51
IV.NARO.HHN. ML:1.6 0.00002355 0.48 AML other m 2021-05-09T16:50:08.46
IV.LRP.EHE. ML:2.1 0.00009460000000000001 0.84 AML other m 2021-05-09T16:50:10.11
IV.NARO.HHE. ML:1.6 0.0000229 0.58 AML other m 2021-05-09T16:50:11.39
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