Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 08-10-2020 and time 05:21:21 (Italy) in region 6 km E Norcia (PG)

A magnitude ML 1.4 earthquake occured in region: 6 km E Norcia (PG), on

  • 08-10-2020 03:21:21 (UTC)
  • 08-10-2020 05:21:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7680, 13.1650 at 11 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 6 4957 4957
Accumoli RI 11 667 5624
Arquata del Tronto AP 11 1178 6802
Cascia PG 14 3217 10019
Castelsantangelo sul Nera MC 14 281 10300
Preci PG 16 724 11024
Montegallo AP 16 523 11547
Cittareale RI 17 482 12029
Amatrice RI 18 2657 14686
Visso MC 19 1107 15793
Poggiodomo PG 20 117 15910
Ussita MC 20 444 16354
Montemonaco AP 20 604 16958

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
50 Km NW of L'Aquila (69753 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km W of Pescara (121014 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
99 Km SW of Ancona (100861 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 1.4 2020-10-08
03:21:21		 42.7683 13.1648 11 2021-02-26
14:56:00		 Bollettino Sismico Italiano INGV 83956551
Reviewed
Rev100 		ML 1.5 2020-10-08
03:21:21		 42.7698 13.1562 10 2020-10-08
03:27:54		 Sala Sismica INGV-Roma 83604681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-08 03:21:21 ± 0.07
Latitude 42.7683 ± 0.0018
Longitude 13.1648 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83956551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 288
Semi-minor axis of confidence ellipse (meter) 94
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 68
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 47
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.07464
Epicentral distance of station farthest from the epicenter (degree) 0.56657
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 47
Type of magnitude ML
Reference to an origin 83956551
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-21 13:58:29

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 83604681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-08 03:27:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIGS.HHN. 2020-10-08T03:21:37.18 0.6 undecidable manual S 136 48.3183 50 -0.14 46
IV.MOMA.HHZ. 2020-10-08T03:21:37.94 0.6 undecidable manual S 275 48.618 50 0.54 42
IV.GUMA.HHZ. 2020-10-08T03:21:34.32 0.3 undecidable manual S 23 35.4423 50 0.43 67
IV.CSP1.EHZ. 2020-10-08T03:21:34.12 0.3 undecidable manual S 5 36.0417 50 0.07 72
IV.ARRO.EHZ. 2020-10-08T03:21:34.80 0.6 undecidable manual S 237 38.7279 50 0.03 48
IV.TERO.HHZ. 2020-10-08T03:21:34.69 0.6 undecidable manual S 114 39.2274 50 -0.22 46
IV.CESI.HHZ. 2020-10-08T03:21:33.35 0.3 undecidable manual S 321 33.744 50 -0.08 72
IV.ATCC.EHZ. 2020-10-08T03:21:33.08 0.3 undecidable manual P 318 62.8926 50 0.01 69
IV.SNTG.HHZ. 2020-10-08T03:21:32.27 0.6 undecidable manual P 341 56.9985 50 0.11 46
IV.EL6.EHZ. 2020-10-08T03:21:32.93 0.1 undecidable manual P 355 62.3931 50 -0.07 92
IV.RM33.EHZ. 2020-10-08T03:21:32.23 0.3 undecidable manual S 172 29.0487 50 0.05 73
IV.FDMO.HHZ. 2020-10-08T03:21:32.23 0.6 undecidable manual S 348 30.4473 50 -0.31 46
IV.CESX.HHZ. 2020-10-08T03:21:31.51 0.6 undecidable manual P 250 50.3163 50 0.37 44
IV.MOMA.HHZ. 2020-10-08T03:21:31.44 0.6 undecidable manual P 275 48.618 50 0.57 42
IT.MTCL.HGZ. 2020-10-08T03:21:31.82 0.3 undecidable manual S 332 28.4493 50 -0.19 71
IV.ASSB.HHZ. 2020-10-08T03:21:31.72 0.6 undecidable manual P 307 51.1155 50 0.46 43
IV.FIAM.HHZ. 2020-10-08T03:21:31.81 0.1 undecidable manual P 184 55.5999 50 -0.14 91
IV.MNTT.EHZ. 2020-10-08T03:21:31.43 0.3 undecidable manual P 47 47.8188 50 0.68 60
IV.LNSS.HHZ. 2020-10-08T03:21:30.10 0.3 undecidable manual S 209 20.9679 50 0.07 74
IV.FEMA.HNE. 2020-10-08T03:21:30.40 0.6 undecidable manual S 337 23.4543 50 -0.28 47
IV.GAVE.EHZ. 2020-10-08T03:21:30.64 0.3 undecidable manual S 249 23.6541 50 -0.09 73
IV.GIGS.HHN. 2020-10-08T03:21:30.42 0.3 undecidable manual P 136 48.3183 50 -0.4 66
IV.TERO.HHZ. 2020-10-08T03:21:29.32 0.3 undecidable manual P 114 39.2274 50 -0.11 71
IV.MMO1.EHZ. 2020-10-08T03:21:29.56 0.3 undecidable manual S 42 19.5693 50 -0.1 74
IV.MTRA.EHZ. 2020-10-08T03:21:29.25 0.3 undecidable manual S 94 18.87 50 -0.23 72
IV.GUMA.HHZ. 2020-10-08T03:21:29.19 0.1 undecidable manual P 23 35.4423 50 0.35 91
IV.SMA1.EHZ. 2020-10-08T03:21:29.93 0.1 undecidable manual S 138 20.6682 50 -0.02 100
IV.ARRO.EHZ. 2020-10-08T03:21:29.20 0.1 positive manual P 237 38.7279 50 -0.15 94
IV.T1299.HNN. 2020-10-08T03:21:29.34 0.3 undecidable manual S 147 17.6712 50 0.19 73
IV.MF5.EHZ. 2020-10-08T03:21:29.05 0.3 undecidable manual P 44 34.1436 50 0.41 67
IV.CESI.HHZ. 2020-10-08T03:21:28.44 0.1 negative manual P 321 33.744 50 -0.13 95
IV.CSP1.EHZ. 2020-10-08T03:21:28.76 0.1 undecidable manual P 5 36.0417 50 -0.17 94
IV.FDMO.HHZ. 2020-10-08T03:21:27.87 0.1 negative manual P 348 30.4473 50 -0.19 95
IT.MTCL.HGZ. 2020-10-08T03:21:27.53 0.1 undecidable manual P 332 28.4493 50 -0.23 94
IV.RM33.EHZ. 2020-10-08T03:21:27.80 0.1 negative manual P 172 29.0487 50 -0.06 98
IV.NRCA.HNZ. 2020-10-08T03:21:26.54 0.3 undecidable manual S 330 8.2806 143 -0.17 74
IV.SMA1.EHZ. 2020-10-08T03:21:26.51 0.3 undecidable manual P 138 20.6682 50 -0.05 74
IV.T1299.HNN. 2020-10-08T03:21:26.26 0.1 positive manual P 147 17.6712 50 0.16 97
IV.LNSS.HHZ. 2020-10-08T03:21:26.61 0.1 positive manual P 209 20.9679 50 0 100
IV.FEMA.HNE. 2020-10-08T03:21:26.79 0.3 undecidable manual P 337 23.4543 50 -0.2 72
IV.MMO1.EHZ. 2020-10-08T03:21:26.34 0.1 undecidable manual P 42 19.5693 50 -0.06 99
IV.GAVE.EHZ. 2020-10-08T03:21:26.97 0.1 positive manual P 249 23.6541 50 -0.05 99
IV.MTRA.EHZ. 2020-10-08T03:21:26.38 0.3 undecidable manual P 94 18.87 50 0.09 74
IV.NRCA.HNZ. 2020-10-08T03:21:24.83 0.1 negative manual P 330 8.2806 143 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.9 0.0011369871 0.16 AML other m 2020-10-08T03:21:26.80
IV.NRCA.HNE. ML:1.9 0.0010552848 0.1712 AML other m 2020-10-08T03:21:26.81
IV.NRCA.HHN. ML:1.9 0.00099200545 0.12 AML other m 2020-10-08T03:21:26.90
IV.NRCA.HNN. ML:1.8 0.0009285524 0.1104 AML other m 2020-10-08T03:21:26.90
IV.MTRA.HNE. ML:1.2 0.00011621121 0.0992 AML other m 2020-10-08T03:21:29.59
IV.MTRA.HNN. ML:1.3 0.000137609335 0.2208 AML other m 2020-10-08T03:21:29.74
IV.MTRA.EHN. ML:1.2 0.00013066915 0.2192 AML other m 2020-10-08T03:21:29.64
IV.MTRA.EHE. ML:1.2 0.00011098094 0.16 AML other m 2020-10-08T03:21:30.26
IV.LNSS.HHE. ML:1.5 0.00020808875 0.1392 AML other m 2020-10-08T03:21:30.49
IV.LNSS.HNE. ML:1.4 0.00019483675 0.1312 AML other m 2020-10-08T03:21:30.50
IV.LNSS.HNN. ML:1.4 0.0001767529474 0.1504 AML other m 2020-10-08T03:21:31.13
IV.LNSS.HHN. ML:1.4 0.00019080894999999996 0.1408 AML other m 2020-10-08T03:21:31.19
IV.GAVE.HNE. ML:1.5 0.00020423890000000001 0.12 AML other m 2020-10-08T03:21:31.54
IV.SMA1.EHN. ML:1.2 0.00010824138499999999 0.1392 AML other m 2020-10-08T03:21:31.58
IV.GAVE.EHE. ML:1.5 0.0002066162 0.1792 AML other m 2020-10-08T03:21:31.63
IV.SMA1.EHE. ML:1.2 0.00011411614 0.2 AML other m 2020-10-08T03:21:31.92
IV.GAVE.EHN. ML:1.6 0.00024088555 0.16 AML other m 2020-10-08T03:21:32.21
IV.RM33.EHN. ML:1.4 0.00011270794500000001 0.1808 AML other m 2020-10-08T03:21:32.44
IV.FDMO.HHE. ML:1.2 0.00007368938 0.0992 AML other m 2020-10-08T03:21:33.37
IV.CESI.HHE. ML:1.2 0.00006960134 0.1408 AML other m 2020-10-08T03:21:33.52
IV.RM33.HNN. ML:1.3 0.000095954975 0.0896 AML other m 2020-10-08T03:21:33.47
IV.RM33.EHE. ML:1.4 0.000113943495 0.16 AML other m 2020-10-08T03:21:33.66
IV.RM33.HNE. ML:1.4 0.000111442305 0.1504 AML other m 2020-10-08T03:21:33.85
IV.CESI.HHN. ML:1.4 0.000104513405 0.28 AML other m 2020-10-08T03:21:33.80
IV.CESI.HNN. ML:1.6 0.00015680645 0.2992 AML other m 2020-10-08T03:21:33.80
IV.CSP1.EHE. ML:1.6 0.00014070905 0.16 AML other m 2020-10-08T03:21:34.54
IV.FDMO.HHN. ML:1.2 0.000074829785 0.2192 AML other m 2020-10-08T03:21:34.77
IV.CSP1.EHN. ML:1.8 0.00025582670000000004 0.32 AML other m 2020-10-08T03:21:35.01
IV.GUMA.HHE. ML:1.9 0.00032494435 0.2016 AML other m 2020-10-08T03:21:35.01
IV.GUMA.HNN. ML:2.0 0.0003848027 0.36 AML other m 2020-10-08T03:21:35.27
IV.GUMA.HHN. ML:1.9 0.00034305095 0.5392 AML other m 2020-10-08T03:21:35.10
IV.ARRO.EHE. ML:1.2 0.000060765825 0.16 AML other m 2020-10-08T03:21:35.54
IV.ARRO.EHN. ML:1.2 0.000047861355 0.2 AML other m 2020-10-08T03:21:36.09
IV.GUMA.HNE. ML:1.8 0.00025775179999999997 0.32 AML other m 2020-10-08T03:21:36.31
IV.TERO.HHN. ML:1.3 0.0000705353 0.0608 AML other m 2020-10-08T03:21:36.48
IV.TERO.HHE. ML:1.2 0.000056862534999999995 0.08 AML other m 2020-10-08T03:21:37.82
IV.MOMA.HHN. ML:1.3 0.00005348381 0.52 AML other m 2020-10-08T03:21:38.39
IV.ASSB.HHE. ML:1.1 0.000030118794999999997 0.24 AML other m 2020-10-08T03:21:38.70
IV.MOMA.HHE. ML:1.5 0.000089412625 0.1408 AML other m 2020-10-08T03:21:39.09
IV.ASSB.HHN. ML:1.1 0.0000329809 0.1584 AML other m 2020-10-08T03:21:40.34
IV.FIAM.HHE. ML:1.0 0.000026234755 0.16 AML other m 2020-10-08T03:21:40.53
IV.FIAM.HHN. ML:1.0 0.000020795855000000002 0.1792 AML other m 2020-10-08T03:21:40.99
IV.MNTT.EHE. ML:1.8 0.00018187354999999998 0.3808 AML other m 2020-10-08T03:21:41.36
IV.SNTG.HHE. ML:1.1 0.000024265809999999998 0.1408 AML other m 2020-10-08T03:21:41.66
IV.SNTG.HHN. ML:1.0 0.000022113525000000003 0.1616 AML other m 2020-10-08T03:21:41.67
IV.CESX.HHE. ML:1.1 0.000029586745 0.32 AML other m 2020-10-08T03:21:41.97
IV.CESX.HHN. ML:1.1 0.000035148474999999996 0.3808 AML other m 2020-10-08T03:21:42.17
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