Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 09-03-2021 and time 00:17:16 (UTC) in region 5 km N Cottanello (RI)

A magnitude ML 1.4 earthquake occured in region: 5 km N Cottanello (RI), on

  • 09-03-2021 00:17:16 (UTC)
  • 09-03-2021 01:17:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.4520, 12.7040 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
Cottanello RI 5 563 563
Greccio RI 5 1558 2121
Configni RI 6 633 2754
Stroncone TR 6 4917 7671
Contigliano RI 7 3783 11454
Montasola RI 7 395 11849
Colli sul Velino RI 8 533 12382
Vacone RI 9 256 12638
Labro RI 12 374 13012
Torri in Sabina RI 12 1256 14268
Calvi dell'Umbria TR 13 1856 16124
Montebuono RI 13 883 17007
Casperia RI 13 1246 18253
Terni TR 13 111501 129754
Morro Reatino RI 14 373 130127
Tarano RI 14 1444 131571
Rieti RI 14 47698 179269
Rivodutri RI 14 1253 180522
Roccantica RI 15 563 181085
Monte San Giovanni in Sabina RI 15 714 181799
Arrone TR 16 2763 184562
Selci RI 16 1106 185668
Poggio Bustone RI 16 2055 187723
Cantalupo in Sabina RI 17 1685 189408
Cantalice RI 17 2755 192163
Montefranco TR 17 1276 193439
Narni TR 17 19785 213224
Poggio Catino RI 17 1341 214565
Collevecchio RI 18 1577 216142
Otricoli TR 19 1869 218011
Polino TR 19 233 218244
Forano RI 19 3179 221423

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SE of Terni (111501 inhabitants)
49 Km E of Viterbo (67173 inhabitants)
50 Km N of Guidonia Montecelio (88673 inhabitants)
55 Km N of Tivoli (56533 inhabitants)
56 Km S of Foligno (57155 inhabitants)
58 Km W of L'Aquila (69753 inhabitants)
65 Km N of Roma (2864731 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
85 Km NE of Fiumicino (78395 inhabitants)
85 Km E of Civitavecchia (52991 inhabitants)
85 Km N of Velletri (53303 inhabitants)
85 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 1.4 2021-03-09
00:17:16		 42.4515 12.704 9 2021-07-12
16:55:01		 Bollettino Sismico Italiano INGV 87993481
Reviewed
Rev100 		ML 1.4 2021-03-09
00:17:15		 42.4383 12.7145 7 2021-03-09
00:25:49		 Sala Sismica INGV-Roma 87926701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-09 00:17:16 ± 0.08
Latitude 42.4515 ± 0.0036
Longitude 12.7040 ± 0.0061
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87993481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 407
Semi-minor axis of confidence ellipse (meter) 381
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 266
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.13580
Epicentral distance of station farthest from the epicenter (degree) 0.73744
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 87926701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-09 00:25:49

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 87993481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-07 23:23:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2021-03-09T00:17:39.45 0.3 undecidable manual S 75 75.9684 50 0.2 66
IV.TOLF.HHE. 2021-03-09T00:17:38.15 0.6 undecidable manual S 234 71.9724 50 -0.04 46
IV.FDMO.HHZ. 2021-03-09T00:17:38.52 0.6 undecidable manual S 26 71.9724 50 0.33 43
IV.MGAB.HHZ. 2021-03-09T00:17:38.27 0.6 undecidable manual S 317 70.374 50 0.53 41
IV.SMA1.EHZ. 2021-03-09T00:17:34.45 0.3 undecidable manual S 69 55.3002 50 0.73 59
IV.NRCA.HHZ. 2021-03-09T00:17:33.35 0.3 undecidable manual S 38 54.0015 50 -0.03 71
IV.MTCE.HHN. 2021-03-09T00:17:32.20 0.3 undecidable manual S 176 47.619 50 0.51 65
IV.CSP1.EHZ. 2021-03-09T00:17:31.88 0.6 undecidable manual P 30 81.8514 50 1.51 25
IV.SACS.HHN. 2021-03-09T00:17:30.45 0.3 undecidable manual P 305 78.366 50 0.63 59
IV.RM33.EHZ. 2021-03-09T00:17:30.34 0.3 undecidable manual S 81 42.2244 50 0.1 72
IV.MOMA.HHZ. 2021-03-09T00:17:29.24 0.6 undecidable manual S 344 40.626 50 -0.56 43
IV.TOLF.HHE. 2021-03-09T00:17:29.23 0.3 undecidable manual P 234 71.9724 50 0.39 64
IV.FIAM.HHZ. 2021-03-09T00:17:29.29 0.6 undecidable manual S 121 39.5271 50 -0.22 47
IV.TERO.HHZ. 2021-03-09T00:17:29.31 0.1 undecidable manual P 75 75.9684 50 -0.14 89
IV.MGAB.HHZ. 2021-03-09T00:17:28.54 0.3 undecidable manual P 317 70.374 50 -0.04 69
IV.FDMO.HHZ. 2021-03-09T00:17:28.80 0.1 undecidable manual P 26 71.9724 50 -0.04 91
IV.LNSS.HHZ. 2021-03-09T00:17:27.31 0.1 undecidable manual S 58 32.2455 50 -0.25 94
IV.GAVE.EHZ. 2021-03-09T00:17:26.84 0.1 undecidable manual S 30 30.8469 50 -0.37 92
IV.SMA1.EHZ. 2021-03-09T00:17:26.41 0.1 undecidable manual P 69 55.3002 50 0.15 92
IV.SRES.HHZ. 2021-03-09T00:17:26.30 0.6 undecidable manual S 214 28.6491 108 -0.2 48
IV.NRCA.HHZ. 2021-03-09T00:17:25.92 0.1 undecidable manual P 38 54.0015 50 -0.15 92
IT.MMP1.HGE. 2021-03-09T00:17:24.54 0.3 undecidable manual S 171 22.755 112 -0.03 75
IV.RM33.EHZ. 2021-03-09T00:17:24.14 0.3 undecidable manual P 81 42.2244 50 -0.11 71
IV.MTCE.HHN. 2021-03-09T00:17:24.87 0.3 undecidable manual P 176 47.619 50 -0.22 69
IV.FIAM.HHZ. 2021-03-09T00:17:23.63 0.1 undecidable manual P 121 39.5271 50 -0.2 94
IV.MOMA.HHZ. 2021-03-09T00:17:23.68 0.1 undecidable manual P 344 40.626 50 -0.32 91
IV.CESX.HHZ. 2021-03-09T00:17:23.58 0.6 undecidable manual S 331 19.869 115 -0.08 50
IV.ARRO.EHZ. 2021-03-09T00:17:22.55 0.6 undecidable manual S 20 15.0738 121 0.38 47
IV.GAVE.EHZ. 2021-03-09T00:17:22.20 0.1 positive manual P 30 30.8469 50 -0.3 93
IV.LNSS.HHZ. 2021-03-09T00:17:22.50 0.1 positive manual P 58 32.2455 50 -0.21 95
IV.SRES.HHZ. 2021-03-09T00:17:21.74 0.1 undecidable manual P 214 28.6491 108 -0.35 93
IT.MMP1.HGE. 2021-03-09T00:17:21.08 0.1 undecidable manual P 171 22.755 112 0.1 99
IV.CESX.HHZ. 2021-03-09T00:17:20.39 0.1 undecidable manual P 331 19.869 115 -0.06 100
IV.ARRO.EHZ. 2021-03-09T00:17:19.90 0.1 positive manual P 20 15.0738 121 0.31 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:1.2 0.00014350000000000002 1.32 AML other m 2021-03-09T00:17:22.09
IV.ARRO.EHN. ML:1.2 0.0001585 0.36 AML other m 2021-03-09T00:17:23.33
IV.CESX.HHN. ML:1.2 0.0001315 1.62 AML other m 2021-03-09T00:17:23.06
IV.CESX.HHE. ML:1.0 0.0000844 1.72 AML other m 2021-03-09T00:17:26.10
IV.GAVE.EHE. ML:1.6 0.0002085 0.98 AML other m 2021-03-09T00:17:27.79
IV.SRES.HHE. ML:1.2 0.00007364999999999999 0.82 AML other m 2021-03-09T00:17:27.78
IV.GAVE.EHN. ML:1.8 0.000272 0.12 AML other m 2021-03-09T00:17:27.50
IV.LNSS.HHE. ML:1.7 0.00022600000000000002 0.1 AML other m 2021-03-09T00:17:27.76
IV.SRES.HHN. ML:1.1 0.00006515 1.82 AML other m 2021-03-09T00:17:27.95
IV.LNSS.HHN. ML:1.6 0.00020050000000000002 1.28 AML other m 2021-03-09T00:17:28.35
IV.MOMA.HHE. ML:1.7 0.00017299999999999998 1.2 AML other m 2021-03-09T00:17:30.82
IV.MOMA.HHN. ML:1.6 0.000141 1.3 AML other m 2021-03-09T00:17:30.96
IV.RM33.EHN. ML:1.2 0.000052199999999999995 1.08 AML other m 2021-03-09T00:17:31.45
IV.RM33.EHE. ML:1.2 0.00005015 0.62 AML other m 2021-03-09T00:17:32.75
IV.NRCA.HHE. ML:1.6 0.00009425 0.18 AML other m 2021-03-09T00:17:33.99
IV.NRCA.HHN. ML:1.4 0.00006665 0.86 AML other m 2021-03-09T00:17:35.87
IV.SMA1.EHE. ML:1.4 0.0000576 0.94 AML other m 2021-03-09T00:17:35.31
IV.SMA1.EHN. ML:1.1 0.000028250000000000006 0.42 AML other m 2021-03-09T00:17:37.21
IV.FDMO.HHN. ML:1.3 0.00002955 0.34 AML other m 2021-03-09T00:17:39.73
IV.FDMO.HHE. ML:1.6 0.00005824999999999999 0.22 AML other m 2021-03-09T00:17:39.56
IV.MGAB.HHE. ML:1.7 0.0000734 1.3 AML other m 2021-03-09T00:17:40.26
IV.MGAB.HHN. ML:1.3 0.000037250000000000004 0.68 AML other m 2021-03-09T00:17:40.48
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