Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 21-01-2020 and time 06:20:52 (Italy) in region 3 km N Castelsantangelo sul Nera (MC)

A magnitude ML 1.8 earthquake occured in region: 3 km N Castelsantangelo sul Nera (MC), on

  • 21-01-2020 05:20:52 (UTC)
  • 21-01-2020 06:20:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9210, 13.1580 at 8 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
Castelsantangelo sul Nera MC 3 281 281
Ussita MC 3 444 725
Visso MC 6 1107 1832
Bolognola MC 10 142 1974
Preci PG 11 724 2698
Acquacanina MC 12 121 2819
Fiastra MC 13 559 3378
Montemonaco AP 14 604 3982
Fiordimonte MC 14 202 4184
Norcia PG 15 4957 9141
Monte Cavallo MC 15 145 9286
Montefortino FM 15 1178 10464
Pieve Torina MC 16 1458 11922
Montegallo AP 17 523 12445
Pievebovigliana MC 17 866 13311
Sarnano MC 17 3264 16575
Amandola FM 18 3629 20204
Sellano PG 19 1079 21283
Arquata del Tronto AP 20 1178 22461

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
53 Km NW of Teramo (54892 inhabitants)
58 Km NE of Terni (111501 inhabitants)
66 Km E of Perugia (166134 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
100 Km NW of Pescara (121014 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 1.8 2020-01-21
05:20:52		 42.9207 13.1577 8 2020-07-18
21:08:19		 Bollettino Sismico Italiano INGV 75910241
Reviewed
Rev100 		ML 1.8 2020-01-21
05:20:52		 42.9168 13.1533 9 2020-01-21
05:27:21		 Sala Sismica INGV-Roma 75694951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-21 05:20:52 ± 0.05
Latitude 42.9207 ± 0.0027
Longitude 13.1577 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 75910241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 332
Semi-minor axis of confidence ellipse (meter) 194
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 53
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 55
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.59805
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 75910241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-01-27 11:43:48

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 75694951
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-21 05:27:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2020-01-21T05:21:21.84 3.0 undecidable manual P 0
IV.NARO.HHZ. 2020-01-21T05:21:21.93 3.0 undecidable manual S 0.24 0
IV.ARVD.HHZ. 2020-01-21T05:21:14.59 3.0 undecidable manual S 345 66.378 50 0.88 0
IV.ATCC.EHZ. 2020-01-21T05:21:10.57 0.6 undecidable manual S 305 51.2154 50 0.91 36
IV.MOMA.HHZ. 2020-01-21T05:21:09.75 0.6 undecidable manual S 255 49.5171 50 0.54 42
IV.EL6.EHZ. 2020-01-21T05:21:08.36 0.1 undecidable manual S 354 45.5211 50 0.21 91
IV.RM33.EHZ. 2020-01-21T05:21:08.58 0.6 undecidable manual S 174 45.9207 50 0.33 44
IV.CAMP.HHZ. 2020-01-21T05:21:08.66 0.6 undecidable manual S 154 47.3193 50 0.03 47
IV.ASSB.HHZ. 2020-01-21T05:21:07.34 0.3 undecidable manual S 289 42.7239 50 -0.05 71
IV.SNTG.HHZ. 2020-01-21T05:21:06.87 0.1 undecidable manual S 335 41.0256 50 -0.08 95
IV.LNSS.HHZ. 2020-01-21T05:21:05.95 0.1 undecidable manual S 195 36.5412 50 0.2 93
IV.SMA1.EHZ. 2020-01-21T05:21:05.24 0.1 undecidable manual S 156 35.3424 50 -0.17 94
IV.ARVD.HHZ. 2020-01-21T05:21:04.79 0.3 undecidable manual P 345 66.378 50 -0.14 67
IV.MTRA.EHZ. 2020-01-21T05:21:03.04 0.1 undecidable manual S 133 26.6511 107 0.42 90
IV.MF5.EHZ. 2020-01-21T05:21:03.08 0.3 undecidable manual S 73 25.6521 108 0.79 59
IV.MOMA.HHZ. 2020-01-21T05:21:02.40 0.1 undecidable manual P 255 49.5171 50 0.07 93
IV.ATCC.EHZ. 2020-01-21T05:21:02.50 0.1 undecidable manual P 305 51.2154 50 -0.09 93
IV.CESI.HHZ. 2020-01-21T05:21:01.61 0.1 undecidable manual S 295 22.5552 110 0.32 93
IV.RM33.EHZ. 2020-01-21T05:21:01.58 0.1 undecidable manual P 174 45.9207 50 -0.2 91
IV.MNTT.EHZ. 2020-01-21T05:21:01.11 0.1 undecidable manual P 66 38.8278 50 0.42 88
IV.CAMP.HHZ. 2020-01-21T05:21:01.60 0.1 undecidable manual P 154 47.3193 50 -0.4 87
IV.GUMA.HHZ. 2020-01-21T05:21:01.36 0.1 undecidable manual S 42 21.3675 111 0.47 90
IV.EL6.EHZ. 2020-01-21T05:21:01.32 0.1 undecidable manual P 354 45.5211 50 -0.4 88
IV.ASSB.HHZ. 2020-01-21T05:21:01.03 0.1 undecidable manual P 289 42.7239 50 -0.25 91
IV.LNSS.HHZ. 2020-01-21T05:21:00.15 0.1 undecidable manual P 195 36.5412 50 -0.18 93
IV.CSP1.EHZ. 2020-01-21T05:21:00.14 0.1 undecidable manual S 11 19.3695 113 -0.12 97
IV.SNTG.HHZ. 2020-01-21T05:21:00.72 0.1 undecidable manual P 335 41.0256 50 -0.31 90
IV.SMA1.EHZ. 2020-01-21T05:20:59.83 0.1 undecidable manual P 156 35.3424 50 -0.31 91
IV.FDMO.HHZ. 2020-01-21T05:20:58.68 0.1 undecidable manual S 336 14.0748 121 0.07 99
IV.MMO1.EHZ. 2020-01-21T05:20:58.48 0.1 undecidable manual S 100 13.9749 121 -0.1 99
IV.SAP2.EHE. 2020-01-21T05:20:58.17 0.3 undecidable manual P 45 27.6501 107 -0.55 65
IV.MTRA.EHZ. 2020-01-21T05:20:58.45 0.1 undecidable manual P 133 26.6511 107 -0.08 97
IT.MTCL.HGZ. 2020-01-21T05:20:58.89 0.6 undecidable manual S 302 15.1737 119 -0.07 50
IV.MF5.EHZ. 2020-01-21T05:20:58.67 0.1 undecidable manual P 73 25.6521 108 0.33 92
IV.GUMA.HHZ. 2020-01-21T05:20:57.68 0.1 undecidable manual P 42 21.3675 111 0.15 96
IV.CESI.HHZ. 2020-01-21T05:20:57.85 0.1 undecidable manual P 295 22.5552 110 0.09 97
IV.PF6.EHN. 2020-01-21T05:20:57.73 0.1 undecidable manual P 7 24.2535 109 -0.35 92
IV.NRCA.HNZ. 2020-01-21T05:20:57.87 0.3 undecidable manual S 200 10.2786 129 0.33 71
IV.FEMA.HNE. 2020-01-21T05:20:57.57 0.6 undecidable manual S 298 9.879 130 0.14 49
IV.CSP1.EHZ. 2020-01-21T05:20:57.08 0.1 undecidable manual P 11 19.3695 113 -0.08 98
IT.MTCL.HGZ. 2020-01-21T05:20:56.48 0.1 undecidable manual P 302 15.1737 119 0.07 99
IV.FDMO.HHZ. 2020-01-21T05:20:56.04 0.1 undecidable manual P 336 14.0748 121 -0.17 97
IV.MMO1.EHZ. 2020-01-21T05:20:56.23 0.1 undecidable manual P 100 13.9749 121 0.04 100
IV.NRCA.HNZ. 2020-01-21T05:20:55.80 0.1 undecidable manual P 200 10.2786 129 0.21 97
IV.FEMA.HNE. 2020-01-21T05:20:55.65 0.1 undecidable manual P 298 9.879 130 0.12 99
IV.MC2.EHZ. 2020-01-21T05:20:55.36 0.1 undecidable manual S 112 2.6973 162 -0.63 88
IV.MC2.EHZ. 2020-01-21T05:20:54.31 0.1 undecidable manual P 112 2.6973 162 -0.39 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:2.3 0.002575 0.68 AML other m 2020-01-21T05:20:58.69
IV.NRCA.HHE. ML:2.3 0.0026349999999999998 0.68 AML other m 2020-01-21T05:20:58.69
IV.NRCA.HNN. ML:2.2 0.00219 0.2 AML other m 2020-01-21T05:20:58.55
IV.NRCA.HHN. ML:2.2 0.002335 0.18 AML other m 2020-01-21T05:20:58.56
IV.FDMO.HHN. ML:1.8 0.0007455000000000001 0.14 AML other m 2020-01-21T05:20:59.57
IV.FDMO.HHE. ML:1.8 0.0006675 1.28 AML other m 2020-01-21T05:21:00.85
IV.CSP1.EHN. ML:1.7 0.000428 0.34 AML other m 2020-01-21T05:21:00.74
IV.CSP1.EHE. ML:1.8 0.000447 1.42 AML other m 2020-01-21T05:21:01.91
IV.GUMA.HHN. ML:2.0 0.0007965 0.54 AML other m 2020-01-21T05:21:01.58
IV.CESI.HHN. ML:1.8 0.0004335 0.3 AML other m 2020-01-21T05:21:02.14
IV.CESI.HNN. ML:1.8 0.000448 0.3 AML other m 2020-01-21T05:21:02.15
IV.CESI.HNE. ML:1.6 0.0002815 0.84 AML other m 2020-01-21T05:21:02.62
IV.CESI.HHE. ML:1.6 0.000292 0.96 AML other m 2020-01-21T05:21:03.44
IV.GUMA.HHE. ML:2.0 0.0007775 0.52 AML other m 2020-01-21T05:21:03.90
IV.MTRA.EHE. ML:1.9 0.00041600000000000003 1.58 AML other m 2020-01-21T05:21:03.90
IV.MTRA.HNE. ML:1.9 0.000475 1.28 AML other m 2020-01-21T05:21:03.92
IV.MF5.EHN. ML:1.7 0.000313 0.5 AML other m 2020-01-21T05:21:04.24
IV.MTRA.EHN. ML:1.9 0.000414 0.44 AML other m 2020-01-21T05:21:05.51
IV.MTRA.HNN. ML:1.9 0.00048699999999999997 0.46 AML other m 2020-01-21T05:21:05.50
IV.MF5.EHE. ML:1.7 0.0003 0.42 AML other m 2020-01-21T05:21:06.50
IV.LNSS.HHN. ML:1.6 0.00015949999999999997 0.38 AML other m 2020-01-21T05:21:07.15
IV.LNSS.HHE. ML:1.7 0.00018449999999999999 0.34 AML other m 2020-01-21T05:21:07.03
IV.SNTG.HHE. ML:1.4 0.0000954 1.16 AML other m 2020-01-21T05:21:09.20
IV.RM33.EHE. ML:1.5 0.00009005000000000001 0.42 AML other m 2020-01-21T05:21:09.45
IV.SNTG.HHN. ML:1.5 0.00010849999999999998 0.78 AML other m 2020-01-21T05:21:09.95
IV.RM33.EHN. ML:1.4 0.00007680000000000001 0.44 AML other m 2020-01-21T05:21:10.71
IV.SMA1.EHE. ML:1.6 0.00017299999999999998 0.76 AML other m 2020-01-21T05:21:14.75
IV.SMA1.EHN. ML:1.5 0.0001175 0.72 AML other m 2020-01-21T05:21:15.41
IV.ARVD.HHE. ML:1.6 0.00007439999999999999 0.16 AML other m 2020-01-21T05:21:15.49
IV.ARVD.HHN. ML:1.7 0.00009255 0.42 AML other m 2020-01-21T05:21:16.22
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