Earthquake with magnitude of ML 1.0 on date 17-09-2020 and time 08:35:26 (Italy) in region 8 km SE Norcia (PG)

A magnitude ML 1.0 earthquake occured in region: 8 km SE Norcia (PG), on

  • 17-09-2020 06:35:26 (UTC)
  • 17-09-2020 08:35:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.753, 13.178 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.

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 8 4957 4957
Accumoli RI 9 667 5624
Arquata del Tronto AP 10 1178 6802
Cascia PG 14 3217 10019
Cittareale RI 15 482 10501
Castelsantangelo sul Nera MC 16 281 10782
Montegallo AP 16 523 11305
Amatrice RI 16 2657 13962
Preci PG 18 724 14686
Acquasanta Terme AP 19 2916 17602

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km W of Teramo (54892 inhabitants)
45 Km SE of Foligno (57155 inhabitants)
48 Km NW of L'Aquila (69753 inhabitants)
48 Km E of Terni (111501 inhabitants)
75 Km SE of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
91 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km W of Chieti (51815 inhabitants)
93 Km NE of Tivoli (56533 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
100 Km S 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 1.0 2020-09-17
06:35:26
42.7528 13.1785 11 2021-02-26
14:56:10
Bollettino Sismico Italiano INGV 85339851
Reviewed
Rev100
ML 0.9 2020-09-17
06:35:26
42.7422 13.1838 10 2020-09-17
06:41:40
Sala Sismica INGV-Roma 82975281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-17 06:35:26 ± 0.05
Latitude 42.7528 ± 0.0027
Longitude 13.1785 ± 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 85339851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 257
Semi-minor axis of confidence ellipse (meter) 235
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 61
Circular confidence region, given by single value of horizontal uncertainty (meter) 260
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33815
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1

Field Value
Value 1
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 85339851
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-10 14:50:25

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 82975281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-17 06:41:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
XK.ALB1.HHZ. 2020-09-17T06:37:04.99 3.0 undecidable manual Sg 18.959999 0
XK.GIZZ.HHZ. 2020-09-17T06:37:02.09 3.0 undecidable manual Sg 21.4 0
CR.STON.BHZ. 2020-09-17T06:36:56.40 3.0 undecidable manual Sn -1.04 0
IV.MBAL.EHZ. 2020-09-17T06:36:53.32 3.0 undecidable manual Sn -9.99 0
IV.IMI.HHZ. 2020-09-17T06:36:49.89 3.0 undecidable manual Sn -4.83 0
SI.BOSI.HHZ. 2020-09-17T06:36:37.64 3.0 negative manual Pg 16.889999 0
IV.BRSN.HNZ. 2020-09-17T06:36:34.61 3.0 undecidable manual Sg 6.84 0
IV.ISPIC.HNZ. 2020-09-17T06:36:32.57 3.0 undecidable manual Pg 20.110001 0
GU.POPM.HHZ. 2020-09-17T06:36:31.38 3.0 undecidable manual Sg 4.32 0
MN.BNI.HHZ. 2020-09-17T06:36:31.95 3.0 negative manual Pn 7.45 0
CR.STON.BHZ. 2020-09-17T06:36:13.46 3.0 undecidable manual Pn 6.53 0
IV.PE3.EHZ. 2020-09-17T06:36:10.24 3.0 undecidable manual Sg -3.59 0
OT.OT05.EHZ. 2020-09-17T06:36:09.17 3.0 undecidable manual Sn -4.15 0
ST.GAGG.HHZ. 2020-09-17T06:36:09.01 3.0 negative manual Pn -6.79 0
IV.NDIM.HNZ. 2020-09-17T06:36:09.70 3.0 positive manual Pg 9.54 0
IV.RIBO.EHZ.01 2020-09-17T06:35:59.49 3.0 undecidable manual Sn -2.06 0
IV.PTRJ.HNZ. 2020-09-17T06:35:58.54 3.0 undecidable manual Sg 4.66 0
IV.NOCI.HHZ. 2020-09-17T06:35:57.29 3.0 positive manual Pn 0.63 0
IV.CMPR.HHZ. 2020-09-17T06:35:54.26 3.0 undecidable manual Pg 13.67 0
IV.LRP.EHZ. 2020-09-17T06:35:46.28 3.0 undecidable manual Sg 5.23 0
IV.RIBO.EHZ.01 2020-09-17T06:35:39.82 3.0 undecidable manual Pg 4.29 0
IV.TERO.HHZ. 2020-09-17T06:35:38.90 0.6 undecidable manual S 112 0.3381 50 0.11 47
IV.CAMP.HHE. 2020-09-17T06:35:36.84 0.6 undecidable manual S 142 0.2752 50 -0.08 48
IV.RCAV.EHZ. 2020-09-17T06:35:36.58 3.0 undecidable manual Sg 0 0
IV.RM33.HNE. 2020-09-17T06:35:36.13 0.6 undecidable manual S 174 0.2455 50 0.11 48
IV.GAVE.EHZ. 2020-09-17T06:35:35.09 0.6 undecidable manual S 254 0.2176 50 -0.11 49
IV.LNSS.HHZ. 2020-09-17T06:35:34.07 0.3 undecidable manual S 214 0.1808 50 -0.05 74
IV.MMO1.EHZ. 2020-09-17T06:35:34.07 0.6 undecidable manual S 37 0.1826 50 -0.09 49
IV.SMA1.EHZ. 2020-09-17T06:35:33.57 0.6 undecidable manual S 137 0.1682 50 -0.17 48
IV.TERO.HHZ. 2020-09-17T06:35:33.47 0.1 undecidable manual P 112 0.3381 50 -0.04 96
IV.MC2.EHZ. 2020-09-17T06:35:33.64 0.6 undecidable manual S 3 0.1583 50 0.18 48
IV.MTRA.EHZ. 2020-09-17T06:35:33.25 0.6 undecidable manual S 89 0.1601 50 -0.25 48
IV.RM33.HNE. 2020-09-17T06:35:32.08 0.3 undecidable manual P 174 0.2455 50 0.17 72
IV.CAMP.HHE. 2020-09-17T06:35:32.31 0.3 undecidable manual P 142 0.2752 50 -0.12 72
IV.GAVE.EHZ. 2020-09-17T06:35:31.36 0.1 undecidable manual P 254 0.2176 50 -0.08 98
IV.NRCA.HHZ. 2020-09-17T06:35:31.33 0.6 undecidable manual S 330 0.0935 137 -0.22 49
IV.MTRA.EHZ. 2020-09-17T06:35:30.39 0.3 undecidable manual P 89 0.1601 50 -0.06 74
IV.LNSS.HHZ. 2020-09-17T06:35:30.81 0.3 undecidable manual P 214 0.1808 50 0 75
IV.MMO1.EHZ. 2020-09-17T06:35:30.81 0.1 undecidable manual P 37 0.1826 50 -0.03 100
IV.SMA1.EHZ. 2020-09-17T06:35:30.95 0.3 undecidable manual P 137 0.1682 50 0.36 70
IV.MC2.EHZ. 2020-09-17T06:35:30.56 0.3 undecidable manual P 3 0.1583 50 0.13 73
IV.NRCA.HHZ. 2020-09-17T06:35:29.41 0.1 positive manual P 330 0.0935 137 0.08 100
IV.LRP.EHZ. 2020-09-17T06:35:24.28 3.0 undecidable manual P 0.27 0
IV.VVLD.HHZ. 2020-09-17T06:35:23.33 3.0 positive manual P -2.29 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1 0.0001265 1.5 AML other m 2020-09-17T06:35:31.16
IV.NRCA.HHE. ML:1.2 0.0001935 0.14 AML other m 2020-09-17T06:35:32.07
IV.MTRA.EHE. ML:1 8.775E-5 0.4 AML other m 2020-09-17T06:35:33.38
IV.MTRA.EHN. ML:0.9 6.225E-5 0.3 AML other m 2020-09-17T06:35:33.85
IV.LNSS.HHN. ML:0.8 4.955E-5 0.28 AML other m 2020-09-17T06:35:34.28
IV.LNSS.HHE. ML:0.8 5.0E-5 0.96 AML other m 2020-09-17T06:35:34.64
IV.TERO.HHE. ML:0.8 2.55E-5 0.34 AML other m 2020-09-17T06:35:39.38
IV.TERO.HHN. ML:0.9 2.99E-5 0.94 AML other m 2020-09-17T06:35:40.55
GU.POPM.HHN. ML:2.4 4.38E-5 0.08 AML other m 2020-09-17T06:36:35.37
GU.POPM.HHE. ML:2.3 3.9E-5 0.12 AML other m 2020-09-17T06:36:44.02
IV.NDIM.HNN. ML:4.1 0.001465 0.3 AML other m 2020-09-17T06:37:11.15
IV.NDIM.HHN. ML:3.9 0.0010715 1.46 AML other m 2020-09-17T06:37:17.23
IV.NDIM.HHE. ML:4.1 0.001665 0.1 AML other m 2020-09-17T06:37:18.32
IV.NDIM.HNE. ML:4.1 0.001525 0.92 AML other m 2020-09-17T06:37:18.77
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