Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 15-09-2020 and time 10:52:29 (UTC) in region 4 km E Norcia (PG)

A magnitude ML 1.7 earthquake occured in region: 4 km E Norcia (PG), on

  • 15-09-2020 10:52:29 (UTC)
  • 15-09-2020 12:52:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8040, 13.1390 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 10 281 5238
Preci PG 12 724 5962
Arquata del Tronto AP 13 1178 7140
Cascia PG 14 3217 10357
Visso MC 15 1107 11464
Accumoli RI 15 667 12131
Ussita MC 16 444 12575
Montegallo AP 17 523 13098
Cerreto di Spoleto PG 18 1075 14173
Montemonaco AP 19 604 14777
Poggiodomo PG 20 117 14894
Sellano PG 20 1079 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
70 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
96 Km W of Pescara (121014 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
98 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 1.7 2020-09-15
10:52:29		 42.8042 13.1388 10 2021-02-26
14:55:58		 Bollettino Sismico Italiano INGV 83643001
Reviewed
Rev100 		ML 1.8 2020-09-15
10:52:29		 42.8013 13.1407 11 2020-09-15
11:14:00		 Sala Sismica INGV-Roma 82926791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-15 10:52:29 ± 0.03
Latitude 42.8042 ± 0.0018
Longitude 13.1388 ± 0.0025
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 83643001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 230
Semi-minor axis of confidence ellipse (meter) 38
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
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 55
Number of defining phases 55
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.90292
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 35
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 83643001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-09 10:53:00

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 22
Type of magnitude ML
Reference to an origin 82926791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-15 11:14:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2020-09-15T10:52:46.99 0.3 undecidable manual P 333 100.2219 50 0.22 62
IV.ASSB.HHN. 2020-09-15T10:52:45.17 0.6 undecidable manual S 304 47.1195 50 0.14 46
IV.SSFR.HHZ. 2020-09-15T10:52:43.12 0.3 undecidable manual P 338 75.8685 50 0.11 66
IV.SEF1.HNN. 2020-09-15T10:52:43.74 0.6 undecidable manual S 338 41.0256 50 0.33 45
IV.VCEL.EHZ. 2020-09-15T10:52:43.01 0.3 undecidable manual P 128 73.1712 50 0.42 62
IV.T0110.HHZ. 2020-09-15T10:52:43.82 0.3 undecidable manual P 141 82.3509 50 -0.2 64
IV.CAMP.HHZ. 2020-09-15T10:52:42.13 0.3 undecidable manual S 143 37.0296 50 -0.21 70
IV.MURB.HHZ. 2020-09-15T10:52:42.48 0.3 undecidable manual P 316 71.1732 50 0.18 66
IV.PF6.EHN. 2020-09-15T10:52:42.24 0.3 undecidable manual S 7 37.3293 50 -0.16 70
IV.MML1.HNE. 2020-09-15T10:52:42.28 0.3 undecidable manual S 338 36.9297 50 -0.02 73
IV.RM33.EHZ. 2020-09-15T10:52:41.35 0.3 undecidable manual S 169 33.3444 50 0.01 73
IV.GUMA.HHZ. 2020-09-15T10:52:41.30 0.3 undecidable manual S 29 32.8449 50 0.09 72
IV.CSP1.EHE. 2020-09-15T10:52:40.99 0.3 undecidable manual S 10 32.3454 50 -0.1 72
IV.EL6.EHZ. 2020-09-15T10:52:40.20 0.3 undecidable manual P 357 58.2972 50 -0.12 68
IV.CESI.HHZ. 2020-09-15T10:52:40.08 0.6 undecidable manual S 320 29.2485 50 -0.19 47
IV.ATCC.EHZ. 2020-09-15T10:52:40.42 0.3 undecidable manual P 316 58.497 50 0.08 69
IV.FIAM.HHZ. 2020-09-15T10:52:40.26 0.3 undecidable manual P 182 59.496 50 -0.23 67
IV.CESX.HHE. 2020-09-15T10:52:39.16 0.6 undecidable manual P 244 50.0166 50 0.13 46
IV.FDMO.HHZ. 2020-09-15T10:52:39.20 0.3 undecidable manual S 351 26.1516 50 -0.22 71
IV.SMA1.EHZ. 2020-09-15T10:52:39.33 0.3 undecidable manual S 140 25.0527 50 0.19 71
IV.MOMA.HHZ. 2020-09-15T10:52:38.60 0.3 undecidable manual P 270 46.3203 50 0.14 70
IT.MTCL.HGZ. 2020-09-15T10:52:38.50 0.3 undecidable manual S 332 23.8539 113 -0.3 70
IV.LNSS.HHZ. 2020-09-15T10:52:38.73 0.3 undecidable manual S 200 23.754 113 -0.02 74
IV.OFFI.HHZ. 2020-09-15T10:52:38.90 0.6 undecidable manual P 72 46.7199 50 0.37 44
IV.ASSB.HHN. 2020-09-15T10:52:38.37 0.1 undecidable manual P 304 47.1195 50 -0.22 91
IV.T1299.EHZ. 2020-09-15T10:52:38.45 0.3 undecidable manual S 148 22.1556 115 0.19 72
IV.GAVE.EHZ. 2020-09-15T10:52:38.67 0.6 undecidable manual S 238 23.4543 113 0 50
IV.TERO.HHZ. 2020-09-15T10:52:37.72 0.6 undecidable manual P 118 42.9237 50 -0.22 46
IV.ARRO.EHZ. 2020-09-15T10:52:37.63 0.6 undecidable manual P 231 39.3273 50 0.24 46
IV.FEMA.HNZ. 2020-09-15T10:52:37.18 0.1 undecidable manual S 338 18.9699 118 -0.07 99
IV.SEF1.HNN. 2020-09-15T10:52:37.62 0.3 undecidable manual P 338 41.0256 50 -0.03 72
IV.MMO1.EHZ. 2020-09-15T10:52:37.03 0.3 undecidable manual S 55 18.5703 119 -0.1 74
IV.SAP2.EHZ. 2020-09-15T10:52:37.70 0.3 undecidable manual P 33 38.7279 50 0.41 67
IV.MTRA.HNZ. 2020-09-15T10:52:37.77 0.3 undecidable manual S 104 21.6672 115 -0.31 70
IV.RM33.EHZ. 2020-09-15T10:52:36.24 0.3 undecidable manual P 169 33.3444 50 -0.22 70
IV.MML1.HNE. 2020-09-15T10:52:36.93 0.1 undecidable manual P 338 36.9297 50 -0.08 95
IV.GUMA.HHZ. 2020-09-15T10:52:36.64 0.3 undecidable manual P 29 32.8449 50 0.26 70
IV.CSP1.EHE. 2020-09-15T10:52:36.27 0.3 undecidable manual P 10 32.3454 50 -0.04 73
IV.CAMP.HHZ. 2020-09-15T10:52:36.82 0.1 positive manual P 143 37.0296 50 -0.21 93
IV.MF5.EHZ. 2020-09-15T10:52:36.67 0.3 undecidable manual P 52 33.0447 50 0.25 70
IV.PF6.EHN. 2020-09-15T10:52:36.94 0.1 undecidable manual P 7 37.3293 50 -0.13 94
IV.SMA1.EHZ. 2020-09-15T10:52:35.01 0.3 undecidable manual P 140 25.0527 50 -0.17 72
IV.MC2.EHZ. 2020-09-15T10:52:35.52 0.3 undecidable manual S 19 12.5763 129 0.12 74
IV.FDMO.HHZ. 2020-09-15T10:52:35.22 0.1 undecidable manual P 351 26.1516 50 -0.13 96
IV.CESI.HHZ. 2020-09-15T10:52:35.86 0.1 positive manual P 320 29.2485 50 0.02 98
IV.MMO1.EHZ. 2020-09-15T10:52:34.02 0.1 undecidable manual P 55 18.5703 119 -0.01 100
IV.T1299.EHZ. 2020-09-15T10:52:34.84 0.3 undecidable manual P 148 22.1556 115 0.16 72
IV.GAVE.EHZ. 2020-09-15T10:52:34.98 0.3 undecidable manual P 238 23.4543 113 0.06 74
IV.MTRA.HNZ. 2020-09-15T10:52:34.41 0.3 undecidable manual P 104 21.6672 115 -0.17 72
IT.MTCL.HGZ. 2020-09-15T10:52:34.86 0.1 undecidable manual P 332 23.8539 113 -0.13 97
IV.LNSS.HHZ. 2020-09-15T10:52:34.96 0.1 undecidable manual P 200 23.754 113 0 99
IV.FEMA.HNZ. 2020-09-15T10:52:34.20 0.3 undecidable manual P 338 18.9699 118 0.1 74
IV.NRCA.HNZ. 2020-09-15T10:52:33.42 0.1 undecidable manual S 328 3.7962 159 -0.13 100
IV.MC2.EHZ. 2020-09-15T10:52:33.36 0.1 undecidable manual P 19 12.5763 129 0.33 95
IV.NRCA.HNZ. 2020-09-15T10:52:32.17 0.1 undecidable manual P 328 3.7962 159 0.21 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:1.8 0.000431 0.18 AML other m 2020-09-15T10:52:38.43
IV.GAVE.EHE. ML:1.6 0.00026649999999999997 0.9 AML other m 2020-09-15T10:52:39.04
IV.MTRA.EHE. ML:1.6 0.00028814985 0.096 AML other m 2020-09-15T10:52:39.07
IV.LNSS.HHN. ML:2.0 0.0006865 1.48 AML other m 2020-09-15T10:52:39.94
IV.GAVE.EHN. ML:1.6 0.00027400000000000005 0.26 AML other m 2020-09-15T10:52:39.22
IV.LNSS.HHE. ML:2.2 0.0009739999999999999 0.36 AML other m 2020-09-15T10:52:39.41
IV.FDMO.HHN. ML:1.7 0.00027600000000000004 0.32 AML other m 2020-09-15T10:52:39.47
IV.FDMO.HHE. ML:1.7 0.000305 0.6 AML other m 2020-09-15T10:52:40.50
IV.CESI.HHN. ML:2.1 0.000612 0.24 AML other m 2020-09-15T10:52:40.46
IV.CESI.HHE. ML:1.9 0.0003875 0.1 AML other m 2020-09-15T10:52:40.37
IV.SMA1.EHN. ML:1.6 0.0002455 1.02 AML other m 2020-09-15T10:52:41.10
IV.RM33.EHN. ML:1.5 0.000125 0.8 AML other m 2020-09-15T10:52:42.78
IV.GUMA.HHN. ML:2.0 0.00043400000000000003 0.24 AML other m 2020-09-15T10:52:42.58
IV.RM33.EHE. ML:1.5 0.0001325 0.5 AML other m 2020-09-15T10:52:43.77
IV.GUMA.HHE. ML:2.0 0.00042249999999999997 0.28 AML other m 2020-09-15T10:52:43.83
IV.SMA1.EHE. ML:1.7 0.0002825 0.48 AML other m 2020-09-15T10:52:44.43
IV.MOMA.HHN. ML:1.2 0.0000511 0.18 AML other m 2020-09-15T10:52:47.18
IV.MOMA.HHE. ML:1.4 0.00007465 0.3 AML other m 2020-09-15T10:52:47.50
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