Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 20-10-2019 and time 08:36:09 (Italy) in region 4 km E Norcia (PG)

A magnitude ML 1.5 earthquake occured in region: 4 km E Norcia (PG), on

  • 20-10-2019 06:36:09 (UTC)
  • 20-10-2019 08:36:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7900, 13.1430 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
Norcia PG 4 4957 4957
Castelsantangelo sul Nera MC 12 281 5238
Arquata del Tronto AP 13 1178 6416
Preci PG 13 724 7140
Cascia PG 13 3217 10357
Accumoli RI 14 667 11024
Visso MC 16 1107 12131
Montegallo AP 17 523 12654
Ussita MC 17 444 13098
Cerreto di Spoleto PG 19 1075 14173
Poggiodomo PG 19 117 14290
Cittareale RI 19 482 14772
Montemonaco AP 20 604 15376

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
71 Km SE of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
95 Km W of Pescara (121014 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
97 Km NW of Chieti (51815 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 1.5 2019-10-20
06:36:09		 42.7898 13.1427 10 2020-02-28
16:42:18		 Bollettino Sismico Italiano INGV 75405681
Reviewed
Rev100 		ML 1.5 2019-10-20
06:36:09		 42.7887 13.1393 10 2019-10-20
06:44:41		 Sala Sismica INGV-Roma 73351311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-20 06:36:09 ± 0.05
Latitude 42.7898 ± 0.0027
Longitude 13.1427 ± 0.0037
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 75405681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 288
Semi-minor axis of confidence ellipse (meter) 169
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) 34
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 45
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.12591
Epicentral distance of station farthest from the epicenter (degree) 0.53959
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 75405681
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-01-09 09:47:31

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 43
Type of magnitude ML
Reference to an origin 73351311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-20 06:44:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2019-10-20T06:36:28.92 0.3 undecidable manual S 317 59.8956 50 0.54 62
IV.EL6.EHZ. 2019-10-20T06:36:28.81 0.3 undecidable manual S 357 59.8956 50 0.42 64
IV.FIAM.HHZ. 2019-10-20T06:36:27.87 0.6 undecidable manual S 182 57.8976 50 0.02 47
IV.MOMA.HHZ. 2019-10-20T06:36:25.29 0.3 undecidable manual S 272 46.62 50 0.45 65
IV.ASSB.HHZ. 2019-10-20T06:36:25.07 0.6 undecidable manual S 306 48.3183 50 -0.21 46
IV.GIGS.HHZ. 2019-10-20T06:36:25.65 0.6 undecidable manual S 137 51.3153 50 -0.42 43
IV.ARRO.EHZ. 2019-10-20T06:36:23.12 0.6 undecidable manual S 233 38.628 50 0.42 44
IV.TERO.HHZ. 2019-10-20T06:36:23.33 0.6 undecidable manual S 116 41.9247 50 -0.25 46
IV.CAMP.HHZ. 2019-10-20T06:36:21.70 0.6 undecidable manual S 142 35.6421 50 -0.19 47
IV.MF5.EHZ. 2019-10-20T06:36:21.91 0.3 undecidable manual S 49 33.8439 50 0.48 66
IV.CSP1.EHZ. 2019-10-20T06:36:21.10 0.6 undecidable manual S 9 33.8439 50 -0.33 46
IV.CESI.HHZ. 2019-10-20T06:36:20.24 0.6 undecidable manual S 321 30.747 50 -0.35 46
IV.EL6.EHZ. 2019-10-20T06:36:20.37 0.3 undecidable manual P 357 59.8956 50 -0.1 69
IV.RM33.EHZ. 2019-10-20T06:36:20.95 0.6 undecidable manual S 169 31.746 50 0.09 48
IV.ATCC.EHZ. 2019-10-20T06:36:20.56 0.3 undecidable manual P 317 59.8956 50 0.1 69
IV.FDMO.HHZ. 2019-10-20T06:36:19.30 0.3 undecidable manual S 351 27.75 50 -0.49 67
IV.GIGS.HHZ. 2019-10-20T06:36:19.16 0.3 undecidable manual P 137 51.3153 50 0.03 71
IV.MNTT.EHZ. 2019-10-20T06:36:19.03 0.6 undecidable manual P 50 47.619 50 0.46 43
IV.FIAM.HHZ. 2019-10-20T06:36:19.90 0.3 undecidable manual P 182 57.8976 50 -0.26 67
IV.ASSB.HHZ. 2019-10-20T06:36:18.84 0.6 undecidable manual P 306 48.3183 50 0.16 46
IV.OFFI.HHZ. 2019-10-20T06:36:18.97 0.6 undecidable manual P 70 47.0196 50 0.49 43
IV.LNSS.HHZ. 2019-10-20T06:36:18.26 0.6 undecidable manual S 202 22.3554 114 0.13 49
IV.MOMA.HHZ. 2019-10-20T06:36:18.49 0.3 undecidable manual P 272 46.62 50 0.07 71
IV.SMA1.EHZ. 2019-10-20T06:36:18.60 0.6 undecidable manual S 138 23.6541 113 0.06 49
IV.CESX.HHZ. 2019-10-20T06:36:18.73 0.6 undecidable manual P 246 49.617 50 -0.15 46
IT.MTCL.HGZ. 2019-10-20T06:36:18.70 0.6 undecidable manual S 333 25.4523 111 -0.42 45
IV.MTRA.EHZ. 2019-10-20T06:36:17.53 0.6 undecidable manual S 100 20.9679 115 -0.17 48
IV.TERO.HHZ. 2019-10-20T06:36:17.56 0.3 undecidable manual P 116 41.9247 50 -0.14 70
IV.MMO1.EHZ. 2019-10-20T06:36:17.12 0.6 undecidable manual S 51 19.2696 117 -0.05 50
IV.FEMA.HNZ. 2019-10-20T06:36:17.42 0.3 undecidable manual S 338 20.5683 116 -0.14 73
IV.ARRO.EHZ. 2019-10-20T06:36:17.00 0.3 undecidable manual P 233 38.628 50 -0.19 70
IV.CSP1.EHZ. 2019-10-20T06:36:16.21 0.1 undecidable manual P 9 33.8439 50 -0.24 93
IV.MC2.EHZ. 2019-10-20T06:36:16.03 0.6 undecidable manual S 16 13.9749 125 0.44 46
IV.CAMP.HHZ. 2019-10-20T06:36:16.62 0.3 undecidable manual P 142 35.6421 50 -0.1 72
IV.MF5.EHZ. 2019-10-20T06:36:16.71 0.1 undecidable manual P 49 33.8439 50 0.26 93
IV.RM33.EHZ. 2019-10-20T06:36:16.13 0.3 undecidable manual P 169 31.746 50 0.01 73
IV.FDMO.HHZ. 2019-10-20T06:36:15.20 0.1 negative manual P 351 27.75 50 -0.31 93
IV.CESI.HHZ. 2019-10-20T06:36:15.74 0.3 undecidable manual P 321 30.747 50 -0.23 70
IV.FEMA.HNZ. 2019-10-20T06:36:14.21 0.3 undecidable manual P 338 20.5683 116 -0.01 75
IT.MTCL.HGZ. 2019-10-20T06:36:14.82 0.3 undecidable manual P 333 25.4523 111 -0.3 70
IV.MTRA.EHZ. 2019-10-20T06:36:14.30 0.1 undecidable manual P 100 20.9679 115 0 100
IV.LNSS.HHZ. 2019-10-20T06:36:14.65 0.1 positive manual P 202 22.3554 114 0.1 98
IV.MMO1.EHZ. 2019-10-20T06:36:14.01 0.1 positive manual P 51 19.2696 117 0.02 100
IV.SMA1.EHZ. 2019-10-20T06:36:14.80 0.3 undecidable manual P 138 23.6541 113 0.01 74
IV.MC2.EHZ. 2019-10-20T06:36:13.37 0.1 undecidable manual P 16 13.9749 125 0.29 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MNTT.EHE. ML:1.8 0.00018970399999999998 0.3616 AML other m 2019-10-20T06:36:28.74
IV.MTRA.EHE. ML:1.5 0.0002258625 0.16 AML other m 2019-10-20T06:36:19.73
IV.MTRA.HNE. ML:1.5 0.00021163565 0.0896 AML other m 2019-10-20T06:36:18.84
IV.MTRA.HNN. ML:1.5 0.00023196535 0.16 AML other m 2019-10-20T06:36:18.92
IV.MTRA.EHN. ML:1.5 0.00023717779999999998 0.16 AML other m 2019-10-20T06:36:18.84
IV.LNSS.HNN. ML:1.7 0.0003518314 0.16 AML other m 2019-10-20T06:36:19.91
IV.LNSS.HNE. ML:1.7 0.00031517744999999997 0.1504 AML other m 2019-10-20T06:36:20.21
IV.LNSS.HHE. ML:1.7 0.00035821040000000006 0.1024 AML other m 2019-10-20T06:36:19.06
IV.LNSS.HHN. ML:1.7 0.00034559425 0.16 AML other m 2019-10-20T06:36:19.91
IV.SMA1.EHE. ML:1.2 0.00010642886499999999 0.16 AML other m 2019-10-20T06:36:22.02
IV.SMA1.EHN. ML:1.3 0.000113281715 0.1408 AML other m 2019-10-20T06:36:20.42
IV.FDMO.HHN. ML:1.3 0.000114034685 0.1024 AML other m 2019-10-20T06:36:19.92
IV.FDMO.HHE. ML:1.4 0.00012112023 0.2208 AML other m 2019-10-20T06:36:20.86
IV.CESI.HHE. ML:1.6 0.0001735864 0.0992 AML other m 2019-10-20T06:36:20.31
IV.CESI.HNE. ML:1.6 0.0001726746 0.1088 AML other m 2019-10-20T06:36:20.36
IV.CESI.HHN. ML:1.6 0.0002121475 0.1024 AML other m 2019-10-20T06:36:20.74
IV.CESI.HNN. ML:1.7 0.00022035995 0.2496 AML other m 2019-10-20T06:36:20.66
IV.RM33.HNN. ML:1.4 0.00011335746000000001 0.24 AML other m 2019-10-20T06:36:22.25
IV.RM33.EHN. ML:1.4 0.00010488875 0.24 AML other m 2019-10-20T06:36:22.38
IV.RM33.EHE. ML:1.5 0.00013416604999999998 0.1792 AML other m 2019-10-20T06:36:21.74
IV.CSP1.EHE. ML:1.5 0.00013068354000000002 0.1984 AML other m 2019-10-20T06:36:21.80
IV.CSP1.EHN. ML:1.7 0.00018802000000000003 0.1792 AML other m 2019-10-20T06:36:22.18
IV.CAMP.HHE. ML:0.9 0.000028422375 0.1792 AML other m 2019-10-20T06:36:22.91
IV.MF5.EHN. ML:1.6 0.00015124806 0.2176 AML other m 2019-10-20T06:36:22.82
IV.MF5.EHE. ML:1.6 0.00014951244499999998 0.16 AML other m 2019-10-20T06:36:22.80
IV.ARRO.EHN. ML:1.3 0.00007497932 0.1984 AML other m 2019-10-20T06:36:25.88
IV.ARRO.EHE. ML:1.2 0.000059387005 0.1824 AML other m 2019-10-20T06:36:26.17
IV.TERO.HHE. ML:1.4 0.00007284061 0.1408 AML other m 2019-10-20T06:36:23.65
IV.TERO.HHN. ML:1.5 0.000100681175 0.0608 AML other m 2019-10-20T06:36:25.35
IV.MOMA.HHE. ML:1.8 0.0001759292 0.1792 AML other m 2019-10-20T06:36:26.31
IV.MOMA.HHN. ML:1.6 0.000113072215 0.24 AML other m 2019-10-20T06:36:26.58
IV.MOMA.HNE. ML:1.8 0.000185651 0.1888 AML other m 2019-10-20T06:36:26.31
IV.CESX.HHE. ML:1.1 0.000029959160000000003 0.1984 AML other m 2019-10-20T06:36:30.57
IV.CESX.HHN. ML:1.1 0.00003732309 0.2208 AML other m 2019-10-20T06:36:27.77
IV.OFFI.HHN. ML:1.6 0.00011435878 0.3392 AML other m 2019-10-20T06:36:30.13
IV.MNTT.EHN. ML:1.8 0.0001925455 0.1408 AML other m 2019-10-20T06:36:29.12
IV.GIGS.HHE. ML:0.6 0.000011691208 0.08 AML other m 2019-10-20T06:36:26.75
IV.GIGS.HHN. ML:0.6 0.0000103234725 0.08 AML other m 2019-10-20T06:36:28.31
IV.FIAM.HHN. ML:0.8 0.00001457806 0.1408 AML other m 2019-10-20T06:36:29.27
IV.FIAM.HHE. ML:1.0 0.000017954004999999998 0.2592 AML other m 2019-10-20T06:36:29.61
IV.EL6.EHE. ML:1.5 0.000065283985 0.1792 AML other m 2019-10-20T06:36:31.51
IV.EL6.EHN. ML:1.4 0.000050535545 1.8208 AML other m 2019-10-20T06:36:30.96
IV.ATCC.EHE. ML:1.2 0.000032196130000000004 0.1408 AML other m 2019-10-20T06:36:30.68
IV.ATCC.EHN. ML:1.3 0.000040823490000000006 1.7216 AML other m 2019-10-20T06:36:29.93
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