Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 05-02-2021 and time 08:03:49 (Italy) in region 1 km NW Montasola (RI)

A magnitude ML 2.0 earthquake occured in region: 1 km NW Montasola (RI), on

  • 05-02-2021 07:03:49 (UTC)
  • 05-02-2021 08:03:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.3910, 12.6730 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
Montasola RI 1 395 395
Cottanello RI 2 563 958
Vacone RI 3 256 1214
Configni RI 4 633 1847
Torri in Sabina RI 5 1256 3103
Casperia RI 6 1246 4349
Montebuono RI 7 883 5232
Tarano RI 7 1444 6676
Roccantica RI 8 563 7239
Contigliano RI 8 3783 11022
Calvi dell'Umbria TR 9 1856 12878
Selci RI 9 1106 13984
Cantalupo in Sabina RI 9 1685 15669
Poggio Catino RI 11 1341 17010
Greccio RI 11 1558 18568
Monte San Giovanni in Sabina RI 11 714 19282
Collevecchio RI 12 1577 20859
Stroncone TR 12 4917 25776
Forano RI 12 3179 28955
Stimigliano RI 14 2328 31283
Poggio Mirteto RI 14 6315 37598
Colli sul Velino RI 15 533 38131
Rieti RI 16 47698 85829
Magliano Sabina RI 16 3774 89603
Salisano RI 16 567 90170
Filacciano RM 16 477 90647
Otricoli TR 16 1869 92516
Montopoli di Sabina RI 16 4210 96726
Montenero Sabino RI 17 299 97025
Ponzano Romano RM 17 1155 98180
Mompeo RI 17 530 98710
Torrita Tiberina RM 18 1089 99799
Labro RI 18 374 100173
Castelnuovo di Farfa RI 19 1059 101232
Casaprota RI 19 744 101976
Nazzano RM 19 1436 103412
Terni TR 19 111501 214913
Narni TR 19 19785 234698
Belmonte in Sabina RI 20 636 235334
Morro Reatino RI 20 373 235707

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km S of Terni (111501 inhabitants)
44 Km N of Guidonia Montecelio (88673 inhabitants)
47 Km E of Viterbo (67173 inhabitants)
49 Km N of Tivoli (56533 inhabitants)
58 Km N of Roma (2864731 inhabitants)
60 Km W of L'Aquila (69753 inhabitants)
63 Km S of Foligno (57155 inhabitants)
78 Km NE of Fiumicino (78395 inhabitants)
79 Km N of Velletri (53303 inhabitants)
80 Km E of Civitavecchia (52991 inhabitants)
81 Km N of Pomezia (62966 inhabitants)
83 Km S of Perugia (166134 inhabitants)
89 Km N of Aprilia (73446 inhabitants)
90 Km W of Teramo (54892 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 2021-02-05
07:03:49		 42.3913 12.6727 9 2021-07-12
16:54:57		 Bollettino Sismico Italiano INGV 86933481
Reviewed
Rev100 		ML 2.0 2021-02-05
07:03:49		 42.3923 12.6703 10 2021-02-05
07:16:42		 Sala Sismica INGV-Roma 86845601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-05 07:03:49 ± 0.06
Latitude 42.3913 ± 0.0027
Longitude 12.6727 ± 0.0061
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 86933481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 445
Semi-minor axis of confidence ellipse (meter) 229
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 261
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 33
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) 0.98835
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 32
Type of magnitude ML
Reference to an origin 86933481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-08 11:19:22

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 38
Type of magnitude ML
Reference to an origin 86845601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-05 07:16:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SCHR.EHZ. 2021-02-05T07:05:31.38 3.0 undecidable manual Sg 11.99 0
GU.GSCL.HHZ. 2021-02-05T07:05:10.33 3.0 undecidable manual Sg 12.76 0
IV.AGLI.HHZ. 2021-02-05T07:05:07.84 3.0 undecidable manual Sn -0.09 0
IV.MILN.HHZ. 2021-02-05T07:05:01.65 3.0 negative manual Pg 13.81 0
IV.IFIL.HHZ. 2021-02-05T07:04:49.02 3.0 negative manual Pn -0.51 0
IV.MGR.HHZ. 2021-02-05T07:04:46.85 3.0 negative manual Pg 10.48 0
IV.CRND.HNZ. 2021-02-05T07:04:40.21 3.0 positive manual Pn -0.96 0
IV.MTMR.EHZ. 2021-02-05T07:04:33.04 3.0 undecidable manual Pg 8.27 0
IV.GUAR.HHZ. 2021-02-05T07:04:15.32 3.0 undecidable manual S -0.31 0
IV.SMA1.EHZ. 2021-02-05T07:04:09.02 0.1 undecidable manual S 64 60.2952 50 0.51 85
IV.EL6.EHZ. 2021-02-05T07:04:08.15 0.3 undecidable manual P 18 109.7124 50 0.02 64
IV.CERT.HHZ. 2021-02-05T07:04:07.17 0.3 undecidable manual S 153 55.3002 50 0.01 71
IV.MURB.HHZ. 2021-02-05T07:04:07.04 0.6 undecidable manual P 353 97.4247 50 0.81 35
IV.FOSV.EHZ. 2021-02-05T07:04:06.31 3.0 undecidable manual P 0.41 0
IV.MF5.EHZ. 2021-02-05T07:04:06.43 3.0 negative manual P 1.53 0
IV.MOMA.HHZ. 2021-02-05T07:04:05.35 0.1 undecidable manual S 350 46.5201 50 0.53 86
IV.CSP1.EHZ. 2021-02-05T07:04:05.03 0.3 undecidable manual P 29 88.9443 50 0.1 66
IT.GNU.HGE. 2021-02-05T07:04:05.15 0.6 undecidable manual S 350 46.5201 50 0.33 45
IV.RM33.EHZ. 2021-02-05T07:04:04.97 0.3 undecidable manual S 73 46.2204 50 0.22 69
IV.FDMO.HHZ. 2021-02-05T07:04:03.16 0.3 undecidable manual P 25 79.1652 50 -0.25 65
IV.MMO1.EHZ. 2021-02-05T07:04:03.03 0.3 undecidable manual P 43 77.6667 50 -0.15 66
IV.LNSS.HHZ. 2021-02-05T07:04:02.38 0.3 undecidable manual S 52 38.1285 50 -0.21 71
IV.MGAB.HHZ. 2021-02-05T07:04:02.81 0.3 undecidable manual P 322 73.6707 50 0.24 66
IV.FIAM.HHZ. 2021-02-05T07:04:02.76 0.3 undecidable manual S 110 38.9277 50 -0.04 73
IV.GAVE.EHZ. 2021-02-05T07:04:02.24 0.3 undecidable manual S 28 37.9287 50 -0.3 69
IV.ASSB.HHZ. 2021-02-05T07:04:02.08 0.1 undecidable manual P 359 72.2721 50 -0.27 87
IV.CESI.HHZ. 2021-02-05T07:04:01.88 0.1 undecidable manual P 15 70.6737 50 -0.22 88
IV.SMA1.EHZ. 2021-02-05T07:04:00.54 0.1 undecidable manual P 64 60.2952 50 0.03 94
IV.CERT.HHZ. 2021-02-05T07:03:59.47 0.3 undecidable manual P 153 55.3002 50 -0.26 68
IT.GNU.HGE. 2021-02-05T07:03:58.52 0.3 undecidable manual P 350 46.5201 50 0.14 70
IV.CESX.HHZ. 2021-02-05T07:03:58.96 0.3 undecidable manual S 344 25.0527 111 0.08 74
IV.MOMA.HHZ. 2021-02-05T07:03:58.09 0.1 undecidable manual P 350 46.5201 50 -0.29 91
IV.RM33.EHZ. 2021-02-05T07:03:58.17 0.1 undecidable manual P 73 46.2204 50 -0.17 93
IV.MTCE.HHZ. 2021-02-05T07:03:57.56 0.3 undecidable manual P 172 41.3253 50 -0.02 73
IV.SRES.HHZ. 2021-02-05T07:03:57.72 0.3 undecidable manual S 218 21.7671 113 -0.08 75
IV.ARRO.EHZ. 2021-02-05T07:03:57.90 0.1 undecidable manual S 20 22.1556 113 -0.05 100
IV.FIAM.HHZ. 2021-02-05T07:03:57.08 0.3 undecidable manual P 110 38.9277 50 -0.14 71
IV.GAVE.EHZ. 2021-02-05T07:03:56.86 0.1 positive manual P 28 37.9287 50 -0.2 94
IV.LNSS.HHZ. 2021-02-05T07:03:56.95 0.1 undecidable manual P 52 38.1285 50 -0.14 95
IT.MMP1.HGE. 2021-02-05T07:03:56.61 0.3 undecidable manual S 158 16.9719 119 0.29 72
IV.CESX.HHZ. 2021-02-05T07:03:54.78 0.1 positive manual P 344 25.0527 111 -0.17 97
IV.SRES.HHZ. 2021-02-05T07:03:54.24 0.1 undecidable manual P 218 21.7671 113 -0.09 99
IV.ARRO.EHZ. 2021-02-05T07:03:54.50 0.1 positive manual P 20 22.1556 113 0.09 99
IT.MMP1.HGE. 2021-02-05T07:03:53.85 0.3 undecidable manual P 158 16.9719 119 0.38 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:2.2 0.0011 0.2 AML other m 2021-02-05T07:03:58.22
IV.ARRO.EHN. ML:2.3 0.001295 0.22 AML other m 2021-02-05T07:03:58.36
IV.SRES.HHN. ML:1.7 0.0003445 1.44 AML other m 2021-02-05T07:03:58.98
IV.SRES.HHE. ML:1.7 0.0003795 0.32 AML other m 2021-02-05T07:03:59.87
IV.CESX.HHN. ML:1.8 0.00033 0.92 AML other m 2021-02-05T07:04:01.49
IV.CESX.HHE. ML:1.7 0.00028100000000000005 1.08 AML other m 2021-02-05T07:04:01.98
IV.GAVE.EHN. ML:2.2 0.000672 0.24 AML other m 2021-02-05T07:04:03.92
IV.GAVE.EHE. ML:2.2 0.0006339999999999999 0.14 AML other m 2021-02-05T07:04:04.10
IV.RM33.EHN. ML:1.9 0.00021250000000000002 0.26 AML other m 2021-02-05T07:04:06.62
IV.MOMA.HNE. ML:2.0 0.000268 0.68 AML other m 2021-02-05T07:04:06.17
IV.RM33.EHE. ML:1.8 0.000165 0.32 AML other m 2021-02-05T07:04:06.72
IV.MOMA.HNN. ML:2.1 0.000361 1.34 AML other m 2021-02-05T07:04:06.90
IV.MOMA.HHN. ML:2.1 0.000363 1.34 AML other m 2021-02-05T07:04:06.90
IV.MOMA.HHE. ML:2.0 0.0003085 0.66 AML other m 2021-02-05T07:04:07.67
IV.CERT.HHN. ML:1.8 0.0001585 0.7 AML other m 2021-02-05T07:04:07.52
IV.CERT.HHE. ML:1.7 0.0001101 0.46 AML other m 2021-02-05T07:04:08.71
IV.SMA1.EHE. ML:2.1 0.000268 0.2 AML other m 2021-02-05T07:04:10.03
IV.SMA1.EHN. ML:1.9 0.00017999999999999998 0.46 AML other m 2021-02-05T07:04:11.49
IV.CESI.HHE. ML:2.0 0.000162 0.32 AML other m 2021-02-05T07:04:12.55
IV.CESI.HHN. ML:2.1 0.000201 0.38 AML other m 2021-02-05T07:04:12.40
IV.ASSB.HHN. ML:1.8 0.0000983 1.44 AML other m 2021-02-05T07:04:14.03
IV.FDMO.HHN. ML:2.0 0.000132 0.56 AML other m 2021-02-05T07:04:14.78
IV.FDMO.HHE. ML:2.1 0.00016 0.44 AML other m 2021-02-05T07:04:14.57
IV.MGAB.HHN. ML:2.2 0.000221 0.38 AML other m 2021-02-05T07:04:15.21
IV.MGAB.HHE. ML:2.1 0.000184 0.36 AML other m 2021-02-05T07:04:15.65
IV.ASSB.HHE. ML:1.8 0.00010395 1.32 AML other m 2021-02-05T07:04:16.73
IV.CSP1.EHN. ML:2.3 0.0002515 0.64 AML other m 2021-02-05T07:04:19.63
IV.GUAR.HHE. ML:2.0 0.00013705 0.3 AML other m 2021-02-05T07:04:20.54
IV.GUAR.HHN. ML:2.1 0.00016099999999999998 0.42 AML other m 2021-02-05T07:04:20.57
IV.CSP1.EHE. ML:2.2 0.000163 1.08 AML other m 2021-02-05T07:04:23.84
IV.EL6.EHE. ML:1.9 0.00007185 0.3 AML other m 2021-02-05T07:04:28.65
IV.EL6.EHN. ML:1.9 0.00007364999999999999 0.4 AML other m 2021-02-05T07:04:30.13
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