Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 07-12-2020 and time 00:59:30 (UTC) in region 2 km NW Ussita (MC)

A magnitude ML 1.7 earthquake occured in region: 2 km NW Ussita (MC), on

  • 07-12-2020 00:59:30 (UTC)
  • 07-12-2020 01:59:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9650, 13.1290 at 10 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
Ussita MC 2 444 444
Visso MC 5 1107 1551
Castelsantangelo sul Nera MC 8 281 1832
Acquacanina MC 8 121 1953
Fiastra MC 8 559 2512
Fiordimonte MC 9 202 2714
Bolognola MC 9 142 2856
Monte Cavallo MC 11 145 3001
Pieve Torina MC 11 1458 4459
Pievebovigliana MC 12 866 5325
Preci PG 12 724 6049
Muccia MC 15 915 6964
Sarnano MC 16 3264 10228
Montefortino FM 18 1178 11406
Montemonaco AP 18 604 12010
Sellano PG 18 1079 13089
Amandola FM 19 3629 16718
Serravalle di Chienti MC 19 1070 17788
Norcia PG 19 4957 22745
Cessapalombo MC 19 512 23257
Camerino MC 20 6974 30231

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
58 Km NW of Teramo (54892 inhabitants)
60 Km NE of Terni (111501 inhabitants)
62 Km E of Perugia (166134 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
97 Km NW of Montesilvano (53738 inhabitants)
98 Km S of Fano (60888 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 1.7 2020-12-07
00:59:30		 42.965 13.1293 10 2021-02-26
14:56:14		 Bollettino Sismico Italiano INGV 86094421
Reviewed
Rev100 		ML 1.9 2020-12-07
00:59:29		 42.9648 13.1213 12 2020-12-07
01:10:10		 Sala Sismica INGV-Roma 85256331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-07 00:59:30 ± 0.04
Latitude 42.9650 ± 0.0027
Longitude 13.1293 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86094421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 280
Semi-minor axis of confidence ellipse (meter) 272
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 187
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.05846
Epicentral distance of station farthest from the epicenter (degree) 0.42538
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 86094421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-08 11:35:10

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 85256331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-07 01:10:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FOSV.EHZ. 2020-12-07T00:59:45.33 0.3 undecidable manual S 321 47.2194 50 0.09 70
IV.CING.HNZ. 2020-12-07T00:59:45.28 0.3 undecidable manual S 7 45.8208 50 0.39 65
IV.EL6.EHZ. 2020-12-07T00:59:43.64 0.6 undecidable manual S 357 40.5261 50 0.19 46
IV.T1299.HNN. 2020-12-07T00:59:43.01 0.6 undecidable manual S 161 38.7279 50 0.02 48
IV.SMA1.EHZ. 2020-12-07T00:59:43.32 0.6 undecidable manual S 156 40.7259 50 -0.19 46
IV.MNTT.EHZ. 2020-12-07T00:59:43.12 0.6 undecidable manual S 74 39.3273 50 -0.02 48
IV.LNSS.HNE. 2020-12-07T00:59:43.48 0.6 undecidable manual S 190 40.8258 50 -0.06 47
IV.ASSB.HHZ. 2020-12-07T00:59:42.98 0.3 undecidable manual S 283 39.1275 50 -0.11 70
IV.MF5.EHZ. 2020-12-07T00:59:40.15 0.3 undecidable manual S 84 26.9508 50 0.32 69
IV.SAP2.EHZ. 2020-12-07T00:59:39.85 0.3 undecidable manual S 56 26.2515 50 0.19 71
IV.FOSV.EHZ. 2020-12-07T00:59:38.70 0.3 undecidable manual P 321 47.2194 50 -0.1 69
IV.CING.HNZ. 2020-12-07T00:59:38.90 0.3 undecidable manual P 7 45.8208 50 0.3 67
IV.CESI.HHZ. 2020-12-07T00:59:37.41 0.3 undecidable manual S 284 18.7701 119 -0.02 74
IV.LNSS.HNE. 2020-12-07T00:59:37.46 0.3 undecidable manual P 190 40.8258 50 -0.36 66
IV.GUMA.HHZ. 2020-12-07T00:59:37.81 0.3 undecidable manual S 57 19.869 117 0.03 74
IV.EL6.EHZ. 2020-12-07T00:59:37.83 0.6 undecidable manual P 357 40.5261 50 0.06 47
IV.MNTT.EHZ. 2020-12-07T00:59:37.87 0.3 undecidable manual P 74 39.3273 50 0.28 68
IV.T1299.HNN. 2020-12-07T00:59:37.86 0.6 undecidable manual P 161 38.7279 50 0.36 44
IV.ASSB.HHZ. 2020-12-07T00:59:37.25 0.1 undecidable manual P 283 39.1275 50 -0.31 90
IV.SMA1.EHZ. 2020-12-07T00:59:37.37 0.3 undecidable manual P 156 40.7259 50 -0.43 65
IV.PF6.EHN. 2020-12-07T00:59:37.28 0.3 undecidable manual S 15 19.869 117 -0.49 67
IV.MNTP.HNZ. 2020-12-07T00:59:36.80 0.6 undecidable manual P 55 33.5442 50 0.1 47
IV.CSP1.EHZ. 2020-12-07T00:59:36.08 0.3 undecidable manual S 23 15.3735 124 -0.33 70
IV.NRCA.HHZ. 2020-12-07T00:59:35.89 0.3 undecidable manual S 185 14.6742 125 -0.32 70
IV.MF5.EHZ. 2020-12-07T00:59:35.63 0.1 undecidable manual P 84 26.9508 50 -0.05 97
IT.MTCL.HGZ. 2020-12-07T00:59:35.61 0.3 undecidable manual S 287 10.9779 133 0.37 70
IV.SAP2.EHZ. 2020-12-07T00:59:35.44 0.3 undecidable manual P 56 26.2515 50 -0.14 71
IV.FDMO.HHZ. 2020-12-07T00:59:34.56 0.3 undecidable manual S 337 8.6802 140 -0.1 74
IV.FEMA.HNE. 2020-12-07T00:59:34.62 0.3 undecidable manual S 267 6.4935 148 0.4 70
IV.MC2.EHZ. 2020-12-07T00:59:34.83 0.3 undecidable manual S 141 7.6812 143 0.38 70
IV.CESI.HHZ. 2020-12-07T00:59:34.29 0.1 undecidable manual P 284 18.7701 119 0 99
IV.GUMA.HHZ. 2020-12-07T00:59:34.37 0.1 undecidable manual P 57 19.869 117 -0.12 97
IV.PF6.EHN. 2020-12-07T00:59:34.14 0.3 undecidable manual P 15 19.869 117 -0.35 69
IT.MTCL.HGZ. 2020-12-07T00:59:33.11 0.1 undecidable manual P 287 10.9779 133 0.08 99
IV.CSP1.EHZ. 2020-12-07T00:59:33.52 0.1 undecidable manual P 23 15.3735 124 -0.19 96
IV.NRCA.HHZ. 2020-12-07T00:59:33.54 0.1 undecidable manual P 185 14.6742 125 -0.05 99
IV.FDMO.HHZ. 2020-12-07T00:59:32.74 0.1 undecidable manual P 337 8.6802 140 0.05 100
IV.MC2.EHZ. 2020-12-07T00:59:32.83 0.1 negative manual P 141 7.6812 143 0.26 96
IV.FEMA.HNE. 2020-12-07T00:59:32.66 0.6 undecidable manual P 267 6.4935 148 0.22 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.8 0.0008520000000000001 0.16 AML other m 2020-12-07T00:59:34.98
IV.FDMO.HHE. ML:1.4 0.00034250000000000003 0.22 AML other m 2020-12-07T00:59:35.23
IV.NRCA.HHN. ML:1.9 0.0007139949999999999 0.16 AML other m 2020-12-07T00:59:36.27
IV.NRCA.HNN. ML:1.8 0.0006017534500000001 0.16 AML other m 2020-12-07T00:59:36.28
IV.CSP1.EHN. ML:1.7 0.0004491175 0.26 AML other m 2020-12-07T00:59:36.39
IV.NRCA.HHE. ML:1.9 0.0007935 0.12 AML other m 2020-12-07T00:59:36.40
IV.NRCA.HNE. ML:1.9 0.000777 0.12 AML other m 2020-12-07T00:59:36.40
IV.CSP1.EHE. ML:1.6 0.00035652 0.16 AML other m 2020-12-07T00:59:37.14
IV.CESI.HHE. ML:1.2 0.00013481141 0.16 AML other m 2020-12-07T00:59:37.83
IV.GUMA.HHE. ML:1.8 0.00042699999999999997 1.8 AML other m 2020-12-07T00:59:38.98
IV.GUMA.HHN. ML:1.8 0.0005038646999999999 0.28 AML other m 2020-12-07T00:59:37.99
IV.GUMA.HNE. ML:1.8 0.0005245 1.68 AML other m 2020-12-07T00:59:38.97
IV.CESI.HNE. ML:1.2 0.00012606614999999998 0.18 AML other m 2020-12-07T00:59:38.37
IV.CESI.HNN. ML:1.3 0.000156368595 0.16 AML other m 2020-12-07T00:59:38.86
IV.CESI.HHN. ML:1.3 0.00017167685 0.18 AML other m 2020-12-07T00:59:38.95
IV.GUMA.HNN. ML:2.2 0.00108541611 0.52 AML other m 2020-12-07T00:59:38.93
IV.SAP2.EHE. ML:1.8 0.0003445 0.18 AML other m 2020-12-07T00:59:40.36
IV.SAP2.EHN. ML:2.3 0.001178086 0.1 AML other m 2020-12-07T00:59:40.33
IV.ASSB.HHE. ML:1.5 0.00010965465 2.08 AML other m 2020-12-07T00:59:43.86
IV.ASSB.HHN. ML:1.4 0.00009418336999999999 1.64 AML other m 2020-12-07T00:59:45.44
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