Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 09-09-2020 and time 04:04:47 (UTC) in region 4 km NE Norcia (PG)

A magnitude ML 1.6 earthquake occured in region: 4 km NE Norcia (PG), on

  • 09-09-2020 04:04:47 (UTC)
  • 09-09-2020 06:04:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8290, 13.1130 at 9 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
Norcia PG 4 4957 4957
Castelsantangelo sul Nera MC 8 281 5238
Preci PG 8 724 5962
Visso MC 12 1107 7069
Ussita MC 13 444 7513
Cascia PG 15 3217 10730
Cerreto di Spoleto PG 16 1075 11805
Arquata del Tronto AP 16 1178 12983
Sellano PG 17 1079 14062
Montegallo AP 18 523 14585
Accumoli RI 19 667 15252
Montemonaco AP 19 604 15856
Poggiodomo PG 19 117 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
52 Km W of Teramo (54892 inhabitants)
58 Km NW of L'Aquila (69753 inhabitants)
67 Km E of Perugia (166134 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km W of Pescara (121014 inhabitants)
100 Km N of Tivoli (56533 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 2020-09-09
04:04:47		 42.8293 13.113 9 2021-02-26
14:56:10		 Bollettino Sismico Italiano INGV 85334001
Reviewed
Rev100 		ML 1.5 2020-09-09
04:04:47		 42.8268 13.112 8 2020-09-09
04:11:09		 Sala Sismica INGV-Roma 82753061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-09 04:04:47 ± 0.05
Latitude 42.8293 ± 0.0027
Longitude 13.1130 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85334001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 284
Semi-minor axis of confidence ellipse (meter) 158
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 72
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) 36
Number of associated phases, regardless of their use for origin computation 64
Number of defining phases 64
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00450
Epicentral distance of station farthest from the epicenter (degree) 0.87144
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 19
Type of magnitude ML
Reference to an origin 85334001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-10 09:54:41

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 82753061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-09 04:11:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-09-09T04:05:11.58 0.3 undecidable manual S 349 75.4689 50 0.66 56
IV.ATCC.EHZ. 2020-09-09T04:05:05.85 0.1 undecidable manual S 316 55.0005 50 0.38 85
IV.NARO.HHZ. 2020-09-09T04:05:05.21 0.1 undecidable manual P 334 96.7254 50 0.76 69
IV.EL6.EHZ. 2020-09-09T04:05:05.68 0.1 undecidable manual S 359 55.5 50 0.1 90
IV.SNTG.HHZ. 2020-09-09T04:05:04.02 0.1 undecidable manual S 344 49.2174 50 0.1 91
IT.GNU.HGE. 2020-09-09T04:05:03.36 0.3 undecidable manual S 266 44.2224 50 0.77 57
IV.MNTT.EHZ. 2020-09-09T04:05:03.90 0.1 undecidable manual S 56 46.9197 50 0.6 81
IV.ASSB.HHZ. 2020-09-09T04:05:02.07 0.1 undecidable manual S 303 43.8228 50 -0.4 86
IV.TERO.HHZ. 2020-09-09T04:05:02.65 0.1 undecidable manual S 120 46.1205 50 -0.43 85
IV.MOMA.HHZ. 2020-09-09T04:05:02.91 0.1 undecidable manual S 267 44.2224 50 0.32 88
IV.ARVD.HHZ. 2020-09-09T04:05:01.13 0.3 undecidable manual P 349 75.4689 50 -0.04 66
IV.ARRO.EHZ. 2020-09-09T04:05:01.40 0.1 undecidable manual S 226 39.627 50 0.04 94
IV.VCEL.EHZ. 2020-09-09T04:05:01.25 0.1 undecidable manual P 129 76.5678 50 -0.08 87
IV.MDAR.HNN. 2020-09-09T04:05:01.17 0.3 undecidable manual S 3 40.3263 50 -0.38 65
IV.CAMP.HHZ. 2020-09-09T04:05:01.18 0.3 undecidable manual S 143 40.5261 50 -0.42 65
IV.SAP2.EHE. 2020-09-09T04:05:01.42 0.1 undecidable manual S 38 37.629 50 0.59 82
IV.RM33.EHZ. 2020-09-09T04:05:00.47 0.1 undecidable manual S 167 36.5412 50 -0.05 94
IT.FOPC.HGN. 2020-09-09T04:05:00.98 0.3 undecidable manual S 295 36.741 50 0.39 66
IV.GUMA.HHZ. 2020-09-09T04:04:59.18 0.1 undecidable manual S 35 31.5462 50 -0.01 95
IV.PF6.EHN. 2020-09-09T04:04:59.44 0.1 undecidable manual S 11 34.8429 50 -0.63 81
IV.MML1.HNE. 2020-09-09T04:04:59.14 0.1 undecidable manual S 340 33.5442 50 -0.58 83
IV.MF5.EHN. 2020-09-09T04:04:59.89 0.1 undecidable manual S 58 33.2445 50 0.25 91
IV.SMA1.EHZ. 2020-09-09T04:04:58.04 0.1 undecidable manual S 141 28.5492 107 -0.19 93
IV.T1299.HNZ. 2020-09-09T04:04:57.74 0.1 undecidable manual S 147 25.6521 109 0.46 88
IV.CESI.HHZ. 2020-09-09T04:04:57.14 0.1 undecidable manual S 319 25.752 109 -0.18 93
IV.ATCC.EHZ. 2020-09-09T04:04:57.86 0.1 undecidable manual P 316 55.0005 50 -0.16 89
IV.MNTT.EHZ. 2020-09-09T04:04:57.34 0.1 positive manual P 56 46.9197 50 0.57 82
IV.LNSS.HHZ. 2020-09-09T04:04:57.33 0.1 undecidable manual S 193 25.8519 109 0 97
IV.OFFI.HHZ. 2020-09-09T04:04:57.60 0.1 negative manual P 76 48.0186 50 0.67 78
IV.EL6.EHZ. 2020-09-09T04:04:57.85 0.1 positive manual P 359 55.5 50 -0.23 87
IV.MOMA.HHZ. 2020-09-09T04:04:56.49 0.1 undecidable manual P 267 44.2224 50 0.13 91
IV.MTRA.HNZ. 2020-09-09T04:04:56.63 0.1 undecidable manual S 109 24.4533 110 -0.25 92
IV.SNTG.HHZ. 2020-09-09T04:04:56.98 0.1 undecidable manual P 344 49.2174 50 -0.14 90
IT.GNU.HGE. 2020-09-09T04:04:56.53 0.3 undecidable manual P 266 44.2224 50 0.17 68
IV.TERO.HHZ. 2020-09-09T04:04:56.40 0.1 undecidable manual P 120 46.1205 50 -0.24 89
IV.GAVE.EHZ. 2020-09-09T04:04:56.50 0.1 undecidable manual S 230 23.4543 111 -0.05 96
IV.ARRO.EHZ. 2020-09-09T04:04:55.43 0.1 undecidable manual P 226 39.627 50 -0.22 90
IT.FOPC.HGN. 2020-09-09T04:04:55.09 0.3 undecidable manual P 295 36.741 50 -0.11 70
IV.CAMP.HHZ. 2020-09-09T04:04:55.43 0.3 undecidable manual P 143 40.5261 50 -0.35 66
IV.SAP2.EHE. 2020-09-09T04:04:55.45 0.1 undecidable manual P 38 37.629 50 0.11 93
IV.FIU1.HNZ. 2020-09-09T04:04:55.94 0.3 undecidable manual P 340 42.4242 50 -0.14 68
IV.ASSB.HHZ. 2020-09-09T04:04:55.96 0.1 negative manual P 303 43.8228 50 -0.33 87
IT.MTCL.HGZ. 2020-09-09T04:04:55.29 0.1 undecidable manual S 333 20.4684 114 -0.3 92
IV.RM33.EHZ. 2020-09-09T04:04:55.12 0.1 undecidable manual P 167 36.5412 50 -0.04 94
IV.MF5.EHN. 2020-09-09T04:04:54.71 0.1 positive manual P 58 33.2445 50 0.06 94
IV.MDAR.HNN. 2020-09-09T04:04:54.99 0.3 undecidable manual P 3 40.3263 50 -0.77 57
IV.FEMA.HNZ. 2020-09-09T04:04:54.02 0.1 undecidable manual S 341 15.5733 120 -0.06 97
IV.GUMA.HHZ. 2020-09-09T04:04:54.31 0.1 positive manual P 35 31.5462 50 -0.09 94
IV.MMO1.EHZ. 2020-09-09T04:04:54.88 0.1 undecidable manual S 66 19.0698 115 -0.26 93
IV.PF6.EHN. 2020-09-09T04:04:54.43 0.1 undecidable manual P 11 34.8429 50 -0.48 86
IV.MML1.HNE. 2020-09-09T04:04:54.55 0.1 undecidable manual P 340 33.5442 50 -0.15 92
IV.LNSS.HHZ. 2020-09-09T04:04:53.28 0.1 undecidable manual P 193 25.8519 109 -0.04 96
IV.SMA1.EHZ. 2020-09-09T04:04:53.76 0.1 undecidable manual P 141 28.5492 107 -0.08 95
IV.MC2.EHZ. 2020-09-09T04:04:53.08 0.1 undecidable manual S 34 10.9779 129 0.32 93
IV.T1299.HNZ. 2020-09-09T04:04:53.52 0.1 positive manual P 147 25.6521 109 0.23 92
IV.CESI.HHZ. 2020-09-09T04:04:53.20 0.1 positive manual P 319 25.752 109 -0.12 94
IV.MMO1.EHZ. 2020-09-09T04:04:52.03 0.1 positive manual P 66 19.0698 115 -0.03 97
IV.GAVE.EHZ. 2020-09-09T04:04:52.95 0.1 positive manual P 230 23.4543 111 0.08 96
IV.MTRA.HNZ. 2020-09-09T04:04:52.93 0.1 undecidable manual P 109 24.4533 110 -0.13 94
IT.MTCL.HGZ. 2020-09-09T04:04:52.23 0.1 undecidable manual P 333 20.4684 114 -0.09 96
IV.NRCA.HHZ. 2020-09-09T04:04:51.00 0.1 undecidable manual S 13 0.4995 177 0.05 100
IV.FEMA.HNZ. 2020-09-09T04:04:51.60 0.1 positive manual P 341 15.5733 120 0.15 95
IV.MC2.EHZ. 2020-09-09T04:04:51.00 0.1 negative manual P 34 10.9779 129 0.31 93
IV.NRCA.HHZ. 2020-09-09T04:04:49.92 0.1 negative manual P 13 0.4995 177 0.28 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.6 0.000257 0.24 AML other m 2020-09-09T04:04:57.47
IV.GAVE.EHN. ML:1.6 0.0002615 0.18 AML other m 2020-09-09T04:04:57.45
IV.MTRA.HNN. ML:1.9 0.0005285 0.3 AML other m 2020-09-09T04:04:57.22
IV.MTRA.EHN. ML:1.9 0.0005340000000000001 0.28 AML other m 2020-09-09T04:04:57.23
IV.LNSS.HHN. ML:1.8 0.0003345 0.78 AML other m 2020-09-09T04:04:57.96
IV.CESI.HHE. ML:1.4 0.0001365 0.44 AML other m 2020-09-09T04:04:57.46
IV.TERO.HHN. ML:1.5 0.00008975 0.08 AML other m 2020-09-09T04:05:03.43
IV.MTRA.EHE. ML:1.8 0.0004239958 0.16 AML other m 2020-09-09T04:04:56.92
IV.MTRA.HNE. ML:1.8 0.000434413 0.1824 AML other m 2020-09-09T04:04:56.92
IV.GAVE.EHE. ML:1.4 0.0001627016 0.1408 AML other m 2020-09-09T04:04:56.96
IV.LNSS.HHE. ML:1.6 0.0002321968 0.1024 AML other m 2020-09-09T04:04:57.68
IV.GUMA.HHN. ML:1.7 0.00022835139999999998 0.3808 AML other m 2020-09-09T04:04:59.66
IV.GUMA.HNE. ML:1.7 0.00020754945 0.2688 AML other m 2020-09-09T04:04:59.68
IV.GUMA.HHE. ML:1.6 0.0002009882 0.1184 AML other m 2020-09-09T04:04:59.71
IV.RM33.EHE. ML:1.2 0.000055760509999999996 0.16 AML other m 2020-09-09T04:05:01.22
IV.RM33.EHN. ML:1.1 0.00005072903 0.24 AML other m 2020-09-09T04:05:00.88
IV.ASSB.HHE. ML:1.3 0.000060838605 0.2624 AML other m 2020-09-09T04:05:02.27
IV.MNTT.EHE. ML:1.8 0.00019996959999999997 0.4416 AML other m 2020-09-09T04:05:05.49
IV.MNTT.EHN. ML:1.8 0.00018141935 0.2816 AML other m 2020-09-09T04:05:05.48
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