Earthquake with magnitude of ML 0.9 on date 21-12-2020 and time 00:19:31 (UTC) in region 1 km NE Monte Cavallo (MC)

A magnitude ML 0.9 earthquake occured in region: 1 km NE Monte Cavallo (MC), on

  • 21-12-2020 00:19:31 (UTC)
  • 21-12-2020 01:19:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0020, 13.0120 at 3 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Monte Cavallo MC 1 145 145
Pieve Torina MC 6 1458 1603
Fiordimonte MC 8 202 1805
Pievebovigliana MC 9 866 2671
Serravalle di Chienti MC 9 1070 3741
Muccia MC 9 915 4656
Visso MC 10 1107 5763
Ussita MC 12 444 6207
Fiastra MC 12 559 6766
Acquacanina MC 14 121 6887
Preci PG 14 724 7611
Sellano PG 14 1079 8690
Camerino MC 16 6974 15664
Castelsantangelo sul Nera MC 17 281 15945
Sefro MC 17 422 16367
Bolognola MC 18 142 16509
Pioraco MC 20 1134 17643

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km E of Foligno (57155 inhabitants)
52 Km E of Perugia (166134 inhabitants)
57 Km NE of Terni (111501 inhabitants)
68 Km NW of Teramo (54892 inhabitants)
79 Km NW of L'Aquila (69753 inhabitants)
80 Km SW of Ancona (100861 inhabitants)
94 Km S of Fano (60888 inhabitants)
99 Km NE of Viterbo (67173 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
Reviewed
Rev100
ML 0.9 2020-12-21
00:19:31
43.0023 13.0117 3 2020-12-21
00:25:53
Sala Sismica INGV-Roma 85589581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-21 00:19:31 ± 0.1
Latitude 43.0023 ± 0.0027
Longitude 13.0117 ± 0.0037
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85589581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 344
Semi-minor axis of confidence ellipse (meter) 173
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 25
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25271
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 85589581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-21 00:25:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PAOL.HHZ. 2020-12-21T00:20:32.53 3.0 undecidable manual Sn -2.63 0
MN.TRI.HHZ. 2020-12-21T00:20:31.56 3.0 undecidable manual Sg 0.17 0
IV.LRP.EHZ. 2020-12-21T00:20:13.31 3.0 undecidable manual Sn -0.22 0
IX.MNT3.HHZ.02 2020-12-21T00:20:12.39 3.0 undecidable manual Pg 5.23 0
IV.RIBO.EHZ.01 2020-12-21T00:20:08.77 3.0 undecidable manual Sg 12.34 0
IV.EL6.EHZ. 2020-12-21T00:19:44.23 3.0 undecidable manual Sg -0.02 0
IV.MMO1.EHZ. 2020-12-21T00:19:41.60 0.3 undecidable manual S 114 28.0497 97 -0.12 72
IV.NRCA.HHZ. 2020-12-21T00:19:39.23 0.3 undecidable manual S 156 20.4684 99 0.1 73
IV.MC2.EHE. 2020-12-21T00:19:38.64 0.6 undecidable manual S 125 17.5713 100 0.51 45
IV.CSP1.EHZ. 2020-12-21T00:19:38.58 0.3 undecidable manual S 58 18.5703 100 0.12 73
IV.MMO1.EHZ. 2020-12-21T00:19:37.06 0.3 undecidable manual P 114 28.0497 97 -0.52 65
IV.MML1.HNZ. 2020-12-21T00:19:36.48 0.6 undecidable manual S 345 12.7761 104 -0.02 50
IV.CSP1.EHZ. 2020-12-21T00:19:35.74 0.1 undecidable manual P 58 18.5703 100 0.04 99
IV.NRCA.HHZ. 2020-12-21T00:19:35.83 0.3 positive manual P 156 20.4684 99 -0.26 71
IV.MC2.EHE. 2020-12-21T00:19:35.44 0.6 undecidable manual P 125 17.5713 100 -0.07 49
IV.CESI.HHZ. 2020-12-21T00:19:35.39 0.3 undecidable manual S 272 8.6802 110 0.25 72
IV.MML1.HNZ. 2020-12-21T00:19:34.51 0.1 undecidable manual P 345 12.7761 104 -0.06 99
IV.FDMO.HHZ. 2020-12-21T00:19:34.78 0.3 undecidable manual S 58 7.1928 114 0.11 74
IV.FEMA.HNE. 2020-12-21T00:19:34.41 0.3 undecidable manual S 145 5.3946 121 0.29 72
IV.CESI.HHZ. 2020-12-21T00:19:33.91 0.1 positive manual P 272 8.6802 110 0.12 99
IV.FEMA.HNE. 2020-12-21T00:19:33.22 0.3 undecidable manual P 145 5.3946 121 0.03 76
IV.FDMO.HHZ. 2020-12-21T00:19:33.50 0.3 positive manual P 58 7.1928 114 -0.01 76
IV.APEC.HHZ. 2020-12-21T00:19:32.21 3.0 undecidable manual P -0.2 0
IT.MTCL.HGE. 2020-12-21T00:19:32.95 0.1 undecidable manual S 227 1.3986 157 -0.19 99
IT.MTCL.HGE. 2020-12-21T00:19:32.51 0.1 undecidable manual P 227 1.3986 157 -0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.9 0.000141 0.32 AML other m 2020-12-21T00:19:35.61
IV.CESI.HHE. ML:0.8 0.00010819999999999999 1.32 AML other m 2020-12-21T00:19:36.84
IV.NRCA.HHN. ML:0.9 0.00005755 0.14 AML other m 2020-12-21T00:19:39.45
IV.NRCA.HHE. ML:0.9 0.000059499999999999996 0.16 AML other m 2020-12-21T00:19:39.68
IV.CESI.HNN. ML:0.0 0.00016973345 0.77 AML other m 2020-12-21T00:19:34.22
IV.CSP1.EHE. ML:0.8 0.00005839759999999999 0.26 AML other m 2020-12-21T00:19:40.43
IV.CSP1.EHN. ML:1.0 0.00008507839 0.36 AML other m 2020-12-21T00:19:39.85
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