Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 06-01-2021 and time 19:48:00 (UTC) in region 5 km W Preci (PG)

A magnitude ML 1.6 earthquake occured in region: 5 km W Preci (PG), on

  • 06-01-2021 19:48:00 (UTC)
  • 06-01-2021 20:48:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8650, 12.9820 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
Preci PG 5 724 724
Sellano PG 5 1079 1803
Cerreto di Spoleto PG 7 1075 2878
Visso MC 12 1107 3985
Norcia PG 12 4957 8942
Vallo di Nera PG 14 364 9306
Castelsantangelo sul Nera MC 14 281 9587
Monte Cavallo MC 15 145 9732
Ussita MC 16 444 10176
Cascia PG 16 3217 13393
Campello sul Clitunno PG 17 2442 15835
Poggiodomo PG 17 117 15952
Sant'Anatolia di Narco PG 19 564 16516
Trevi PG 19 8469 24985

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
55 Km E of Perugia (166134 inhabitants)
63 Km W of Teramo (54892 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
87 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
98 Km N of Guidonia Montecelio (88673 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 1.6 2021-01-06
19:48:00		 42.865 12.9817 10 2021-07-12
16:54:59		 Bollettino Sismico Italiano INGV 87172801
Reviewed
Rev100 		ML 1.5 2021-01-06
19:48:00		 42.881 13.0128 8 2021-01-06
19:53:14		 Sala Sismica INGV-Roma 86055151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-06 19:48:00 ± 0.06
Latitude 42.8650 ± 0.0036
Longitude 12.9817 ± 0.0049
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 87172801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 370
Semi-minor axis of confidence ellipse (meter) 360
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 29
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 48
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
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) 0.10252
Epicentral distance of station farthest from the epicenter (degree) 0.38671
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 87172801
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-02 11:37:52

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 86055151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-06 19:53:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2021-01-06T19:48:14.67 0.6 undecidable manual S 71 41.1255 50 0.83 38
IV.T1299.HNZ. 2021-01-06T19:48:12.72 0.6 undecidable manual S 136 35.4423 50 0.41 45
IV.ARRO.EHZ. 2021-01-06T19:48:12.63 0.6 undecidable manual S 209 36.2415 50 0.1 48
IV.MOMA.HNZ. 2021-01-06T19:48:12.49 0.6 undecidable manual S 259 34.1436 50 0.53 44
IV.ASSB.HHZ. 2021-01-06T19:48:11.57 0.3 undecidable manual S 307 32.8449 50 -0.03 73
IV.CSP1.EHZ. 2021-01-06T19:48:10.99 0.6 undecidable manual S 36 31.0467 50 -0.14 48
IV.LNSS.HHZ. 2021-01-06T19:48:10.54 0.3 undecidable manual S 171 29.4483 50 -0.18 71
IV.MMO1.EHZ. 2021-01-06T19:48:09.99 0.6 undecidable manual S 82 28.3494 50 -0.42 45
IV.MF5.EHZ. 2021-01-06T19:48:08.36 0.1 undecidable manual P 71 41.1255 50 0.29 91
IV.CESI.HNZ. 2021-01-06T19:48:07.00 0.6 undecidable manual S 338 16.7721 121 0.02 50
IV.T1299.HNZ. 2021-01-06T19:48:07.26 0.6 undecidable manual P 136 35.4423 50 0.07 48
IV.ARRO.EHZ. 2021-01-06T19:48:07.15 0.3 undecidable manual P 209 36.2415 50 -0.16 71
IV.FDMO.HHZ. 2021-01-06T19:48:07.94 0.6 undecidable manual S 24 20.868 116 -0.31 47
IV.CESX.HHZ. 2021-01-06T19:48:07.81 0.6 undecidable manual P 229 42.9237 50 -0.53 43
IV.MC2.EHZ. 2021-01-06T19:48:07.23 0.6 undecidable manual S 73 17.6712 120 -0.02 50
IV.MOMA.HNZ. 2021-01-06T19:48:07.11 0.3 undecidable manual P 259 34.1436 50 0.12 72
IV.ASSB.HHZ. 2021-01-06T19:48:06.63 0.3 undecidable manual P 307 32.8449 50 -0.15 71
IV.LNSS.HHZ. 2021-01-06T19:48:06.02 0.3 undecidable manual P 171 29.4483 50 -0.24 70
IV.CSP1.EHZ. 2021-01-06T19:48:06.32 0.1 undecidable manual P 36 31.0467 50 -0.18 95
IV.FEMA.HNZ. 2021-01-06T19:48:05.72 0.3 undecidable manual S 27 12.0768 130 0.05 75
IV.MMO1.EHZ. 2021-01-06T19:48:05.84 0.1 undecidable manual P 82 28.3494 50 -0.25 94
IT.MTCL.HGZ. 2021-01-06T19:48:05.99 0.6 undecidable manual S 6 14.3745 125 -0.3 48
IV.NRCA.HHZ. 2021-01-06T19:48:05.34 0.6 undecidable manual S 108 11.3775 132 -0.13 50
IV.MC2.EHZ. 2021-01-06T19:48:04.35 0.1 undecidable manual P 73 17.6712 120 0.09 99
IV.CESI.HNZ. 2021-01-06T19:48:04.26 0.1 undecidable manual P 338 16.7721 121 0.15 98
IV.FDMO.HHZ. 2021-01-06T19:48:04.77 0.1 undecidable manual P 24 20.868 116 -0.06 99
IT.MTCL.HGZ. 2021-01-06T19:48:03.80 0.1 undecidable manual P 6 14.3745 125 0.08 99
IV.NRCA.HHZ. 2021-01-06T19:48:03.32 0.1 undecidable manual P 108 11.3775 132 0.08 100
IV.FEMA.HNZ. 2021-01-06T19:48:03.59 0.3 undecidable manual P 27 12.0768 130 0.24 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.8 0.000722 0.12 AML other m 2021-01-06T19:48:05.58
IV.NRCA.HNE. ML:1.8 0.0006755 0.12 AML other m 2021-01-06T19:48:05.58
IV.NRCA.HHN. ML:1.6 0.00045599999999999997 0.1 AML other m 2021-01-06T19:48:06.19
IV.NRCA.HNN. ML:1.6 0.0005215 0.9 AML other m 2021-01-06T19:48:06.65
IV.CSP1.EHE. ML:1.2 0.00006445605 0.3968 AML other m 2021-01-06T19:48:11.30
IV.CSP1.EHN. ML:1.3 0.000091107645 0.1792 AML other m 2021-01-06T19:48:11.47
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