Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 23-06-2021 and time 23:22:32 (Italy) in region 3 km NW Configni (RI)

A magnitude ML 1.6 earthquake occured in region: 3 km NW Configni (RI), on

  • 23-06-2021 21:22:32 (UTC)
  • 23-06-2021 23:22:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.4460, 12.6130 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
Calvi dell'Umbria TR 6 1856 2489
Vacone RI 7 256 2745
Stroncone TR 7 4917 7662
Cottanello RI 8 563 8225
Montasola RI 9 395 8620
Montebuono RI 9 883 9503
Tarano RI 10 1444 10947
Torri in Sabina RI 11 1256 12203
Otricoli TR 11 1869 14072
Narni TR 11 19785 33857
Greccio RI 13 1558 35415
Casperia RI 13 1246 36661
Collevecchio RI 13 1577 38238
Terni TR 13 111501 149739
Contigliano RI 13 3783 153522
Selci RI 14 1106 154628
Magliano Sabina RI 14 3774 158402
Colli sul Velino RI 15 533 158935
Roccantica RI 15 563 159498
Cantalupo in Sabina RI 16 1685 161183
Forano RI 16 3179 164362
Stimigliano RI 17 2328 166690
Labro RI 18 374 167064
Poggio Catino RI 18 1341 168405
Orte VT 19 8923 177328
Monte San Giovanni in Sabina RI 19 714 178042
Gallese VT 19 2849 180891
San Gemini TR 19 5018 185909

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km S of Terni (111501 inhabitants)
42 Km E of Viterbo (67173 inhabitants)
50 Km N of Guidonia Montecelio (88673 inhabitants)
56 Km N of Tivoli (56533 inhabitants)
57 Km S of Foligno (57155 inhabitants)
62 Km N of Roma (2864731 inhabitants)
65 Km W of L'Aquila (69753 inhabitants)
76 Km S of Perugia (166134 inhabitants)
78 Km NE of Civitavecchia (52991 inhabitants)
81 Km NE of Fiumicino (78395 inhabitants)
86 Km N of Velletri (53303 inhabitants)
87 Km N of Pomezia (62966 inhabitants)
93 Km W of Teramo (54892 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 1.6 2021-06-23
21:22:32		 42.4463 12.6128 8 2021-12-29
11:12:28		 Bollettino Sismico Italiano INGV 95191351
Reviewed
Rev100 		ML 1.6 2021-06-23
21:22:32		 42.4513 12.5947 9 2021-06-23
21:32:34		 Sala Sismica INGV-Roma 91785571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-23 21:22:32 ± 0.1
Latitude 42.4463 ± 0.0036
Longitude 12.6128 ± 0.0073
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95191351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 583
Semi-minor axis of confidence ellipse (meter) 150
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 97
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.77791
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 95191351
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-29 23:33:51

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 91785571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-23 21:32:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIR.HHZ. 2021-06-23T21:23:25.22 3.0 undecidable manual Sn 0.16 0
GU.GRAM.HHZ. 2021-06-23T21:23:15.56 3.0 negative manual Pn -1.78 0
IV.CSP1.EHZ. 2021-06-23T21:23:00.04 0.6 undecidable manual S 34 86.3469 50 0.85 35
IV.RMP.HHZ. 2021-06-23T21:22:57.17 3.0 undecidable manual S -0.01 0
IV.FDMO.HHZ. 2021-06-23T21:22:56.83 0.6 undecidable manual S 30 76.0683 50 0.39 42
IV.SACS.HHE. 2021-06-23T21:22:56.82 0.6 undecidable manual S 308 72.6717 50 1.26 29
IV.FEMA.HNE. 2021-06-23T21:22:55.16 0.6 undecidable manual S 32 67.377 50 1.02 33
IV.CESI.HHE. 2021-06-23T21:22:54.22 0.6 undecidable manual S 21 66.378 50 0.36 43
IV.ASSB.HHN. 2021-06-23T21:22:54.09 0.6 undecidable manual S 3 66.2781 50 0.26 44
IV.MGAB.HHZ. 2021-06-23T21:22:54.20 0.6 undecidable manual S 322 65.8896 50 0.46 42
IV.CERT.HNE. 2021-06-23T21:22:53.29 0.6 undecidable manual S 151 62.9925 50 0.34 44
IV.NRCA.HHZ. 2021-06-23T21:22:51.98 0.6 undecidable manual S 43 59.2962 50 -0.01 47
IV.BARO.HNZ. 2021-06-23T21:22:50.30 0.6 undecidable manual S 245 51.0156 50 0.52 43
IV.RM33.EHZ. 2021-06-23T21:22:49.07 0.6 undecidable manual S 82 49.7169 50 -0.35 44
IV.MTCE.HHZ. 2021-06-23T21:22:49.64 0.6 undecidable manual S 167 48.2184 50 0.63 41
IV.CSP1.EHZ. 2021-06-23T21:22:48.29 0.3 undecidable manual P 34 86.3469 50 0.21 64
IV.FIAM.HHZ. 2021-06-23T21:22:48.09 0.6 undecidable manual S 115 45.8208 50 -0.29 45
IV.LNSS.HHZ. 2021-06-23T21:22:46.20 0.6 undecidable manual S 63 39.0276 50 -0.36 45
IV.MMO1.EHZ. 2021-06-23T21:22:46.29 0.6 undecidable manual P 49 76.8675 50 -0.34 42
IV.SACS.HHE. 2021-06-23T21:22:46.28 0.1 undecidable manual P 308 72.6717 50 0.29 86
IV.FDMO.HHZ. 2021-06-23T21:22:46.37 0.3 undecidable manual P 30 76.0683 50 -0.13 67
IT.GNU.HGE. 2021-06-23T21:22:46.16 0.6 undecidable manual S 355 39.8268 50 -0.62 42
IV.MOMA.HHZ. 2021-06-23T21:22:46.17 0.6 undecidable manual S 355 39.8268 50 -0.6 42
IV.FEMA.HNE. 2021-06-23T21:22:46.08 0.3 undecidable manual P 32 67.377 50 0.91 53
IV.MGAB.HHZ. 2021-06-23T21:22:44.80 0.3 undecidable manual P 322 65.8896 50 -0.14 68
IV.TOLF.HHN. 2021-06-23T21:22:44.46 0.3 undecidable manual P 230 65.7897 50 -0.46 63
IV.CESI.HHE. 2021-06-23T21:22:44.79 0.1 undecidable manual P 21 66.378 50 -0.22 89
IV.CERT.HNE. 2021-06-23T21:22:44.42 0.3 undecidable manual P 151 62.9925 50 -0.06 69
IV.ASSB.HHN. 2021-06-23T21:22:44.54 0.3 undecidable manual P 3 66.2781 50 -0.45 63
IV.NRCA.HHZ. 2021-06-23T21:22:43.52 0.1 undecidable manual P 43 59.2962 50 -0.4 86
IV.BARO.HNZ. 2021-06-23T21:22:42.54 0.3 undecidable manual P 245 51.0156 50 -0.11 70
IV.RM33.EHZ. 2021-06-23T21:22:42.44 0.3 undecidable manual P 82 49.7169 50 0 72
IV.MTCE.HHZ. 2021-06-23T21:22:42.00 0.3 undecidable manual P 167 48.2184 50 -0.2 69
IT.MMP1.HGE. 2021-06-23T21:22:42.32 0.6 undecidable manual S 153 24.5532 107 0.51 45
IV.SRES.HHZ. 2021-06-23T21:22:41.46 0.6 undecidable manual S 200 24.753 107 -0.41 46
IV.FIAM.HHZ. 2021-06-23T21:22:41.64 0.3 undecidable manual P 115 45.8208 50 -0.2 69
IV.MOMA.HHZ. 2021-06-23T21:22:40.18 0.3 undecidable manual P 355 39.8268 50 -0.74 60
IV.GAVE.EHN. 2021-06-23T21:22:40.39 0.3 undecidable manual P 40 35.6421 102 0.18 71
IV.LNSS.HHZ. 2021-06-23T21:22:40.40 0.3 undecidable manual P 63 39.0276 50 -0.39 67
IV.ARRO.EHZ. 2021-06-23T21:22:40.77 0.6 undecidable manual S 40 19.2696 111 0.67 42
IT.GNU.HGE. 2021-06-23T21:22:40.48 0.3 undecidable manual P 355 39.8268 50 -0.44 67
IV.CESX.HHZ. 2021-06-23T21:22:39.36 0.6 undecidable manual S 353 18.0708 113 -0.35 47
IV.SRES.HHZ. 2021-06-23T21:22:38.34 0.3 undecidable manual P 200 24.753 107 0.26 71
IV.ARRO.EHZ. 2021-06-23T21:22:37.29 0.1 undecidable manual P 40 19.2696 111 0.23 96
IT.MMP1.HGE. 2021-06-23T21:22:37.99 0.3 undecidable manual P 153 24.5532 107 -0.05 74
IV.CESX.HHZ. 2021-06-23T21:22:36.78 0.1 undecidable manual P 353 18.0708 113 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:1.6 0.0003215 1.22 AML other m 2021-06-23T21:22:40.00
IV.CESX.HHE. ML:1.6 0.0003345 0.26 AML other m 2021-06-23T21:22:41.60
IV.ARRO.EHN. ML:1.5 0.00026900000000000003 0.56 AML other m 2021-06-23T21:22:41.78
IV.ARRO.EHE. ML:1.3 0.00017099999999999998 0.76 AML other m 2021-06-23T21:22:43.59
IV.SRES.HHE. ML:1.4 0.00014700000000000002 1.16 AML other m 2021-06-23T21:22:44.06
IV.MOMA.HHE. ML:1.8 0.0002065 0.54 AML other m 2021-06-23T21:22:46.74
IV.SRES.HHN. ML:1.2 0.00009905 1.52 AML other m 2021-06-23T21:22:47.04
IV.LNSS.HHE. ML:1.7 0.000202 0.14 AML other m 2021-06-23T21:22:47.88
IV.MOMA.HHN. ML:1.8 0.000235 1.12 AML other m 2021-06-23T21:22:48.12
IV.LNSS.HHN. ML:1.7 0.00018449999999999999 0.94 AML other m 2021-06-23T21:22:48.49
IV.RM33.EHE. ML:1.4 0.00007495 0.74 AML other m 2021-06-23T21:22:50.73
IV.RM33.EHN. ML:1.4 0.00006745000000000001 0.94 AML other m 2021-06-23T21:22:52.89
IV.NRCA.HHE. ML:1.6 0.0000844 1.04 AML other m 2021-06-23T21:22:53.52
IV.FIAM.HHN. ML:1.1 0.000034049999999999994 0.44 AML other m 2021-06-23T21:22:55.50
IV.NRCA.HHN. ML:1.4 0.0000553 0.1 AML other m 2021-06-23T21:22:55.58
IV.ASSB.HHN. ML:1.4 0.00004575 0.94 AML other m 2021-06-23T21:22:56.17
IV.FDMO.HHE. ML:1.6 0.00006685 0.42 AML other m 2021-06-23T21:22:57.52
IV.FDMO.HHN. ML:1.7 0.0000704 0.2 AML other m 2021-06-23T21:22:57.90
IV.FIAM.HHE. ML:1.1 0.000036400000000000004 0.52 AML other m 2021-06-23T21:22:58.86
IV.ASSB.HHE. ML:1.6 0.0000703 0.46 AML other m 2021-06-23T21:22:59.28
IV.CSP1.EHE. ML:1.9 0.0001047 0.8 AML other m 2021-06-23T21:23:04.53
IV.CSP1.EHN. ML:1.9 0.0000994 1.18 AML other m 2021-06-23T21:23:05.70
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