Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 20-01-2021 and time 23:13:29 (UTC) in region 1 km SW Muccia (MC)

A magnitude ML 1.0 earthquake occured in region: 1 km SW Muccia (MC), on

  • 20-01-2021 23:13:29 (UTC)
  • 21-01-2021 00:13:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0740, 13.0320 at 13 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.

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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
Muccia MC 1 915 915
Pieve Torina MC 4 1458 2373
Pievebovigliana MC 5 866 3239
Fiordimonte MC 6 202 3441
Serravalle di Chienti MC 6 1070 4511
Camerino MC 8 6974 11485
Monte Cavallo MC 9 145 11630
Sefro MC 11 422 12052
Fiastra MC 11 559 12611
Pioraco MC 12 1134 13745
Acquacanina MC 13 121 13866
Fiuminata MC 15 1402 15268
Castelraimondo MC 15 4587 19855
Visso MC 17 1107 20962
Ussita MC 17 444 21406
Serrapetrona MC 17 966 22372
Caldarola MC 17 1823 24195
Bolognola MC 18 142 24337
Gagliole MC 19 620 24957
Cessapalombo MC 19 512 25469
Belforte del Chienti MC 20 1886 27355

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
52 Km E of Perugia (166134 inhabitants)
65 Km NE of Terni (111501 inhabitants)
72 Km NW of Teramo (54892 inhabitants)
72 Km SW of Ancona (100861 inhabitants)
86 Km S of Fano (60888 inhabitants)
86 Km NW of L'Aquila (69753 inhabitants)
94 Km S of Pesaro (94582 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 1.0 2021-01-20
23:13:29		 43.0742 13.0322 13 2021-01-20
23:21:47		 Sala Sismica INGV-Roma 86413061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-20 23:13:29 ± 0.08
Latitude 43.0742 ± 0.0045
Longitude 13.0322 ± 0.0049
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86413061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 435
Semi-minor axis of confidence ellipse (meter) 270
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 194
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.30667
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 86413061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-20 23:21:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FOSV.EHZ. 2021-01-20T23:13:40.45 0.1 undecidable manual S 318 32.8449 95 0.08 96
IV.ATCC.EHZ. 2021-01-20T23:13:40.90 0.6 undecidable manual S 291 34.0437 94 0.2 47
IV.ASSB.HHZ. 2021-01-20T23:13:39.76 0.3 undecidable manual S 264 30.4473 95 0.01 72
IV.MMO1.EHZ. 2021-01-20T23:13:39.96 0.3 undecidable manual S 129 30.747 95 0.14 70
IV.NRCA.HHZ. 2021-01-20T23:13:38.90 0.3 undecidable manual S 166 27.5502 96 -0.06 72
IV.ATCC.EHZ. 2021-01-20T23:13:35.78 1.0 negative manual P 291 34.0437 94 -0.03 24
IV.CESI.HHZ. 2021-01-20T23:13:35.32 0.6 undecidable manual S 233 12.876 119 0.13 48
IV.CSP1.EHZ. 2021-01-20T23:13:35.56 0.6 undecidable manual S 82 14.0748 115 0.08 49
IV.ASSB.HHZ. 2021-01-20T23:13:35.11 0.1 undecidable manual P 264 30.4473 95 -0.15 93
IV.MMO1.EHZ. 2021-01-20T23:13:35.43 1.0 positive manual P 129 30.747 95 0.12 23
IV.NRCA.HHZ. 2021-01-20T23:13:34.67 0.6 negative manual P 166 27.5502 96 -0.13 47
IV.FOSV.EHZ. 2021-01-20T23:13:34.81 1.0 negative manual P 318 32.8449 95 -0.81 19
IV.FDMO.HHZ. 2021-01-20T23:13:33.60 0.6 undecidable manual S 133 6.0939 147 -0.26 48
IV.CESI.HHZ. 2021-01-20T23:13:32.75 0.1 positive manual P 233 12.876 119 0.12 97
IV.CSP1.EHZ. 2021-01-20T23:13:32.85 0.3 positive manual P 82 14.0748 115 0.05 74
IV.FDMO.HHZ. 2021-01-20T23:13:31.84 0.1 undecidable manual P 133 6.0939 147 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.9 0.0001061 0.24 AML other m 2021-01-20T23:13:33.79
IV.FDMO.HHN. ML:0.9 0.00010115 0.12 AML other m 2021-01-20T23:13:33.80
IV.CESI.HHE. ML:0.9 0.0000776 0.74 AML other m 2021-01-20T23:13:35.43
IV.CESI.HHN. ML:1.1 0.000131 0.3 AML other m 2021-01-20T23:13:35.46
IV.CSP1.EHE. ML:1.4 0.0002495 1.3 AML other m 2021-01-20T23:13:35.11
IV.CSP1.EHN. ML:1.6 0.0003195 0.8 AML other m 2021-01-20T23:13:36.24
IV.NRCA.HHN. ML:0.9 0.00004155 0.42 AML other m 2021-01-20T23:13:39.29
IV.NRCA.HHE. ML:0.8 0.00003515 1.4 AML other m 2021-01-20T23:13:41.14
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