Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 21-01-2022 and time 08:41:53 (Italy) in region 4 km E Terni (TR)

A magnitude ML 1.8 earthquake occured in region: 4 km E Terni (TR), on

  • 21-01-2022 07:41:53 (UTC)
  • 21-01-2022 08:41:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5620, 12.7020 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
Terni TR 5 111501 111501
Arrone TR 6 2763 114264
Montefranco TR 7 1276 115540
Stroncone TR 8 4917 120457
Labro RI 9 374 120831
Colli sul Velino RI 9 533 121364
Ferentillo TR 10 1913 123277
Morro Reatino RI 11 373 123650
Polino TR 12 233 123883
Greccio RI 13 1558 125441
Rivodutri RI 14 1253 126694
San Gemini TR 14 5018 131712
Narni TR 16 19785 151497
Configni RI 16 633 152130
Poggio Bustone RI 17 2055 154185
Cottanello RI 17 563 154748
Contigliano RI 18 3783 158531
Acquasparta TR 19 4778 163309
Cantalice RI 20 2755 166064
Spoleto PG 20 38218 204282
Montasola RI 20 395 204677
Scheggino PG 20 461 205138

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km E of Terni (111501 inhabitants)
44 Km S of Foligno (57155 inhabitants)
52 Km E of Viterbo (67173 inhabitants)
62 Km W of L'Aquila (69753 inhabitants)
62 Km N of Guidonia Montecelio (88673 inhabitants)
66 Km SE of Perugia (166134 inhabitants)
67 Km N of Tivoli (56533 inhabitants)
76 Km N of Roma (2864731 inhabitants)
83 Km W of Teramo (54892 inhabitants)
91 Km NE of Civitavecchia (52991 inhabitants)
96 Km NE of Fiumicino (78395 inhabitants)
97 Km N of Velletri (53303 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 1.8 2022-01-21
07:41:53		 42.5618 12.7023 8 2022-07-08
12:33:34		 Bollettino Sismico Italiano INGV 101675521
Reviewed
Rev100 		ML 1.8 2022-01-21
07:41:54		 42.5632 12.7017 7 2022-01-21
07:49:58		 Sala Sismica INGV-Roma 100005741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-21 07:41:53 ± 0.06
Latitude 42.5618 ± 0.0036
Longitude 12.7023 ± 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 101675521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 376
Semi-minor axis of confidence ellipse (meter) 236
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 159
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 54
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.91461
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 32
Type of magnitude ML
Reference to an origin 100005741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-21 07:49:58

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 32
Type of magnitude ML
Reference to an origin 101675521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-04-13 13:35:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.BURY.HNZ. 2022-01-21T07:43:47.78 3.0 undecidable manual Sn 6.33 0
IV.SCHR.EHZ. 2022-01-21T07:43:38.67 3.0 undecidable manual Sg 9.27 0
CR.STON.BHZ. 2022-01-21T07:43:37.86 3.0 undecidable manual Sn 2.76 0
MN.VAE.HHZ. 2022-01-21T07:43:25.31 3.0 undecidable manual P 1.181 0
IV.EMPL.HHZ. 2022-01-21T07:43:24.93 3.0 positive manual P 1.233 0
IV.EVRN.HHZ. 2022-01-21T07:43:24.31 3.0 undecidable manual P 1.124 0
IV.CMPR.HHZ. 2022-01-21T07:43:14.17 3.0 undecidable manual S -3.23 0
IV.MTGR.HHZ. 2022-01-21T07:43:04.49 3.0 undecidable manual P -1.01 0
OX.SABO.HNZ. 2022-01-21T07:42:58.15 3.0 undecidable manual P 8.91 0
IV.SARZ.HHZ. 2022-01-21T07:42:58.80 3.0 undecidable manual P 8.36 0
IV.MABI.HHZ. 2022-01-21T07:42:58.38 3.0 positive manual P 4.49 0
IV.SACR.HHZ. 2022-01-21T07:42:55.67 3.0 undecidable manual Sg 4.7 0
IV.CMPR.HHZ. 2022-01-21T07:42:41.48 3.0 undecidable manual P -0.63 0
IX.COL3.HHZ.02 2022-01-21T07:42:38.16 3.0 undecidable manual P -0.41 0
IV.CSNT.HHZ. 2022-01-21T07:42:19.17 3.0 positive manual P -0.09 0
IV.CSP1.EHZ. 2022-01-21T07:42:16.64 0.6 undecidable manual S 35 71.5728 50 0.38 43
IV.MML1.EHZ. 2022-01-21T07:42:14.99 0.6 undecidable manual S 20 64.9905 50 0.49 42
IV.BARO.EHN. 2022-01-21T07:42:14.66 0.6 undecidable manual S 237 63.6918 50 0.52 42
IV.FDMO.HHZ. 2022-01-21T07:42:13.76 0.6 undecidable manual S 31 61.2942 50 0.26 45
IV.MC2.EHZ. 2022-01-21T07:42:12.39 0.6 undecidable manual S 45 55.5 50 0.44 43
IV.ATPI.EHZ. 2022-01-21T07:42:12.13 0.6 undecidable manual P 346 101.5206 50 0.69 36
IV.SMA1.EHZ. 2022-01-21T07:42:11.46 0.3 undecidable manual S 81 52.2033 50 0.37 67
IV.CESI.HHZ. 2022-01-21T07:42:11.02 0.6 undecidable manual S 18 51.8037 50 0.04 48
IV.ASSB.HHZ. 2022-01-21T07:42:11.67 0.6 undecidable manual S 356 53.4021 50 0.26 45
IV.NRCA.HHZ. 2022-01-21T07:42:09.23 0.6 undecidable manual S 48 45.1215 50 0.04 48
IV.EL6.EHZ. 2022-01-21T07:42:09.94 0.6 undecidable manual P 21 91.1421 50 0.11 44
IV.RM33.EHZ. 2022-01-21T07:42:08.04 0.6 undecidable manual S 98 42.3243 50 -0.39 45
IV.SACS.HHZ. 2022-01-21T07:42:07.42 0.3 undecidable manual P 297 72.0723 50 0.53 62
IV.SRES.HHE. 2022-01-21T07:42:07.85 0.6 undecidable manual S 204 39.3273 50 0.21 47
IV.CSP1.EHZ. 2022-01-21T07:42:06.80 0.6 undecidable manual P 35 71.5728 50 -0.02 46
IT.MMP1.HGZ. 2022-01-21T07:42:06.47 0.6 undecidable manual S 174 34.8429 102 0.15 48
IV.TERO.HHZ. 2022-01-21T07:42:06.97 0.3 undecidable manual P 84 73.9704 50 -0.21 66
IV.BARO.EHN. 2022-01-21T07:42:05.39 0.3 undecidable manual P 237 63.6918 50 -0.21 68
IV.MGAB.HHZ. 2022-01-21T07:42:05.12 0.3 undecidable manual P 309 61.8936 50 -0.2 68
IV.MML1.EHZ. 2022-01-21T07:42:05.46 0.1 undecidable manual P 20 64.9905 50 -0.34 87
IV.LNSS.HHZ. 2022-01-21T07:42:04.01 0.3 undecidable manual S 81 27.9498 105 0.01 75
IV.MC2.EHZ. 2022-01-21T07:42:04.15 0.3 undecidable manual P 45 55.5 50 -0.18 69
IV.FDMO.HHZ. 2022-01-21T07:42:04.93 0.3 undecidable manual P 31 61.2942 50 -0.3 67
IV.MOMA.HHZ. 2022-01-21T07:42:03.90 0.6 undecidable manual S 338 28.9488 105 -0.41 46
IV.ASSB.HHZ. 2022-01-21T07:42:03.71 0.1 undecidable manual P 356 53.4021 50 -0.31 90
IV.SMA1.EHZ. 2022-01-21T07:42:03.78 0.3 undecidable manual P 81 52.2033 50 -0.06 71
IV.CESI.HHZ. 2022-01-21T07:42:03.46 0.1 undecidable manual P 18 51.8037 50 -0.31 90
IV.RM33.EHZ. 2022-01-21T07:42:02.19 0.6 undecidable manual P 98 42.3243 50 -0.11 48
IV.NRCA.HHZ. 2022-01-21T07:42:02.32 0.3 undecidable manual P 48 45.1215 50 -0.42 67
IV.GAVE.EHZ. 2022-01-21T07:42:02.08 0.6 undecidable manual S 47 21.3675 110 0.29 48
IV.SRES.HHE. 2022-01-21T07:42:01.69 0.6 undecidable manual P 204 39.3273 50 -0.16 48
IT.MMP1.HGZ. 2022-01-21T07:42:00.86 0.6 undecidable manual P 174 34.8429 102 -0.22 47
IV.MOMA.HHZ. 2022-01-21T07:41:59.64 0.1 positive manual P 338 28.9488 105 -0.28 94
IV.LNSS.HHZ. 2022-01-21T07:41:59.75 0.1 positive manual P 81 27.9498 105 0.01 100
IV.GAVE.EHZ. 2022-01-21T07:41:58.56 0.1 undecidable manual P 47 21.3675 110 0.09 99
IV.CESX.HHZ. 2022-01-21T07:41:58.73 0.3 undecidable manual S 299 10.7781 125 0.22 74
IV.ARRO.EHZ. 2022-01-21T07:41:57.39 0.3 undecidable manual S 70 5.4945 144 0.19 75
IV.CESX.HHZ. 2022-01-21T07:41:56.67 0.3 undecidable manual P 299 10.7781 125 0.1 76
IV.ARRO.EHZ. 2022-01-21T07:41:55.92 0.3 undecidable manual P 70 5.4945 144 0.1 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.9 0.00042500000000000003 0.98 AML other m 2022-01-21T07:42:04.98
IV.MOMA.HHN. ML:2.0 0.00047650000000000004 0.64 AML other m 2022-01-21T07:42:05.56
IV.GAVE.EHE. ML:1.9 0.0005529999999999999 0.24 AML other m 2022-01-21T07:42:05.93
IV.MOMA.HNN. ML:1.9 0.00039400000000000004 0.8 AML other m 2022-01-21T07:42:06.08
IV.MOMA.HHE. ML:2.0 0.0005415 0.94 AML other m 2022-01-21T07:42:06.29
IV.MOMA.HNE. ML:2.0 0.0005225 0.94 AML other m 2022-01-21T07:42:06.76
IV.LNSS.HNE. ML:1.9 0.000427 1.18 AML other m 2022-01-21T07:42:06.34
IV.LNSS.HHN. ML:2.0 0.0005765 0.5 AML other m 2022-01-21T07:42:06.63
IV.LNSS.HNN. ML:2.0 0.000522 0.48 AML other m 2022-01-21T07:42:06.63
IV.GAVE.EHN. ML:1.8 0.0005164999999999999 0.7 AML other m 2022-01-21T07:42:06.67
IV.RM33.EHN. ML:1.5 0.00010920000000000001 0.98 AML other m 2022-01-21T07:42:09.30
IV.RM33.EHE. ML:1.7 0.0001505 0.74 AML other m 2022-01-21T07:42:10.09
IV.NRCA.HHN. ML:1.7 0.00016 1.58 AML other m 2022-01-21T07:42:10.14
IV.SMA1.EHN. ML:1.9 0.000194 1.4 AML other m 2022-01-21T07:42:11.01
IV.NRCA.HHE. ML:1.9 0.00022 1.54 AML other m 2022-01-21T07:42:12.01
IV.CESI.HHN. ML:1.8 0.00016749999999999998 0.5 AML other m 2022-01-21T07:42:13.43
IV.ASSB.HHE. ML:1.6 0.0001003 0.42 AML other m 2022-01-21T07:42:13.90
IV.FDMO.HHE. ML:1.6 0.00009165 0.84 AML other m 2022-01-21T07:42:14.66
IV.SMA1.EHE. ML:1.9 0.0002135 1.44 AML other m 2022-01-21T07:42:14.00
IV.FDMO.HHN. ML:1.6 0.00009049999999999999 0.34 AML other m 2022-01-21T07:42:15.21
IV.ASSB.HHN. ML:1.7 0.00011899999999999999 0.52 AML other m 2022-01-21T07:42:15.73
IV.MGAB.HHN. ML:1.8 0.000118 0.5 AML other m 2022-01-21T07:42:16.96
IV.CESI.HHE. ML:1.8 0.000149 1.18 AML other m 2022-01-21T07:42:18.31
IV.MGAB.HHE. ML:1.8 0.00012855 0.48 AML other m 2022-01-21T07:42:19.37
IV.CSP1.EHE. ML:2.0 0.0001815 1.44 AML other m 2022-01-21T07:42:19.12
IV.TERO.HHN. ML:1.6 0.00005685 0.6 AML other m 2022-01-21T07:42:20.87
IV.CSP1.EHN. ML:2.1 0.000185 0.5 AML other m 2022-01-21T07:42:20.84
IV.MML1.EHE. ML:1.8 0.0001156 1.62 AML other m 2022-01-21T07:42:21.06
IV.MML1.EHN. ML:1.8 0.00013235 1.3 AML other m 2022-01-21T07:42:21.12
IV.TERO.HHE. ML:1.6 0.00006665000000000001 1.02 AML other m 2022-01-21T07:42:21.81
IV.EL6.EHN. ML:2.1 0.0001308 1.5 AML other m 2022-01-21T07:42:28.97
IV.EL6.EHE. ML:2.0 0.00010899999999999999 0.76 AML other m 2022-01-21T07:42:30.61
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