Earthquake with magnitude of ML 1.0 on date 04-01-2021 and time 16:21:07 (UTC) in region 5 km SE Monteleone di Spoleto (PG)

A magnitude ML 1.0 earthquake occured in region: 5 km SE Monteleone di Spoleto (PG), on

  • 04-01-2021 16:21:07 (UTC)
  • 04-01-2021 17:21:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.617, 12.998 at 11 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Monteleone di Spoleto PG 5 599 599
Leonessa RI 7 2435 3034
Cascia PG 11 3217 6251
Poggiodomo PG 12 117 6368
Posta RI 13 694 7062
Polino TR 13 233 7295
Cittareale RI 13 482 7777
Poggio Bustone RI 16 2055 9832
Borbona RI 16 617 10449
Rivodutri RI 16 1253 11702
Morro Reatino RI 17 373 12075
Ferentillo TR 17 1913 13988
Scheggino PG 17 461 14449
Cantalice RI 18 2755 17204
Sant'Anatolia di Narco PG 19 564 17768
Montefranco TR 19 1276 19044
Labro RI 19 374 19418
Arrone TR 19 2763 22181
Micigliano RI 19 127 22308

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Terni (111501 inhabitants)
44 Km NW of L'Aquila (69753 inhabitants)
45 Km SE of Foligno (57155 inhabitants)
58 Km W of Teramo (54892 inhabitants)
72 Km NE of Guidonia Montecelio (88673 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
74 Km N of Tivoli (56533 inhabitants)
76 Km E of Viterbo (67173 inhabitants)
91 Km NE of Roma (2864731 inhabitants)
95 Km W of Montesilvano (53738 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 1.0 2021-01-04
16:21:07
42.6173 12.9985 11 2021-07-12
16:54:56
Bollettino Sismico Italiano INGV 86396371
Reviewed
Rev100
ML 1.1 2021-01-04
16:21:07
42.6208 12.9992 14 2021-01-04
16:29:17
Sala Sismica INGV-Roma 86017731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-04 16:21:07 ± 0.05
Latitude 42.6173 ± 0.0027
Longitude 12.9985 ± 0.0037
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86396371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 315
Semi-minor axis of confidence ellipse (meter) 103
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 84
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.62323
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 86396371
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-20 09:33:18

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 86017731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-04 16:29:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHN. 2021-01-04T16:21:24.98 0.6 undecidable manual S 330 0.4928 90 0.22 45
IV.FDMO.HHN. 2021-01-04T16:21:22.64 0.6 undecidable manual S 9 0.4236 90 -0.09 46
IV.MOMA.HNN. 2021-01-04T16:21:21.24 0.6 undecidable manual S 301 0.366 90 0.23 45
IV.CESI.HNN. 2021-01-04T16:21:21.89 0.6 undecidable manual S 350 0.3939 90 0.06 47
IV.MMO1.EHN. 2021-01-04T16:21:21.49 0.6 undecidable manual S 40 0.3705 90 0.33 45
IV.FIAM.HNN. 2021-01-04T16:21:20.58 0.3 undecidable manual S 166 0.3597 90 -0.25 69
IV.MC2.EHZ. 2021-01-04T16:21:19.85 0.6 undecidable manual S 25 0.3256 91 0.04 48
IV.MTCE.HHZ. 2021-01-04T16:21:19.89 0.6 undecidable manual P 198 0.6232 90 0.09 44
IV.ASSB.HHN. 2021-01-04T16:21:17.64 0.6 undecidable manual P 330 0.4928 90 0.08 46
IV.SMA1.EHZ. 2021-01-04T16:21:17.67 0.3 undecidable manual S 87 0.2482 91 0.16 71
IV.FDMO.HHN. 2021-01-04T16:21:16.42 0.6 undecidable manual P 9 0.4236 90 0.04 47
IV.NRCA.HHZ. 2021-01-04T16:21:16.52 0.3 undecidable manual S 21 0.232 91 -0.53 64
IV.MMO1.EHN. 2021-01-04T16:21:15.91 0.6 undecidable manual P 40 0.3705 90 0.44 44
IV.ARRO.EHZ. 2021-01-04T16:21:15.40 0.6 undecidable manual S 258 0.1754 92 0.03 49
IV.MOMA.HNN. 2021-01-04T16:21:15.54 0.6 undecidable manual P 301 0.366 90 0.15 46
IV.CESI.HNN. 2021-01-04T16:21:15.80 0.6 undecidable manual P 350 0.3939 90 -0.06 47
IV.FIAM.HNN. 2021-01-04T16:21:15.19 0.3 undecidable manual P 166 0.3597 90 -0.09 71
IV.MC2.EHZ. 2021-01-04T16:21:14.62 0.6 undecidable manual P 25 0.3256 91 -0.08 47
IV.CAMP.HHN. 2021-01-04T16:21:14.34 0.6 undecidable manual P 105 0.313 91 -0.14 47
IV.GAVE.EHZ. 2021-01-04T16:21:13.16 0.3 undecidable manual S 314 0.107 111 -0.21 72
IV.SMA1.EHZ. 2021-01-04T16:21:13.43 0.1 undecidable manual P 87 0.2482 91 0.06 96
IV.NRCA.HHZ. 2021-01-04T16:21:12.89 0.6 undecidable manual P 21 0.232 91 -0.21 47
IV.ARRO.EHZ. 2021-01-04T16:21:11.87 0.3 undecidable manual P 258 0.1754 92 -0.26 71
IV.LNSS.HHZ. 2021-01-04T16:21:11.89 0.1 undecidable manual S 115 0.0342 156 0.07 100
IV.LNSS.HHZ. 2021-01-04T16:21:10.25 0.1 undecidable manual P 115 0.0342 156 0.17 98
IV.GAVE.EHZ. 2021-01-04T16:21:10.99 0.1 undecidable manual P 314 0.107 111 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:1.2 0.000264731 1.8592 AML other m 2021-01-04T16:21:11.94
IV.LNSS.HHE. ML:1.4 0.00034615915 1.8464 AML other m 2021-01-04T16:21:12.01
IV.GAVE.EHE. ML:1.3 0.0002005 0.16 AML other m 2021-01-04T16:21:13.38
IV.GAVE.EHN. ML:1.2 0.0001655 0.24 AML other m 2021-01-04T16:21:13.60
IV.ARRO.EHN. ML:0.6 2.933953E-5 0.576 AML other m 2021-01-04T16:21:15.26
IV.ARRO.EHE. ML:0.3 1.36166005E-5 0.64 AML other m 2021-01-04T16:21:15.66
IV.NRCA.HHE. ML:0.8 3.6886735E-5 0.2048 AML other m 2021-01-04T16:21:16.94
IV.NRCA.HHN. ML:0.6 2.683146E-5 0.1408 AML other m 2021-01-04T16:21:17.59
IV.SMA1.EHN. ML:0.8 3.3043825E-5 0.2816 AML other m 2021-01-04T16:21:17.98
IV.SMA1.EHE. ML:0.9 4.1875395E-5 1.744 AML other m 2021-01-04T16:21:18.90
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