Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 09-09-2019 and time 08:54:40 (Italy) in region 3 km NE Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 3 km NE Norcia (PG), on

  • 09-09-2019 06:54:40 (UTC)
  • 09-09-2019 08:54:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8100, 13.1280 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 3 4957 4957
Castelsantangelo sul Nera MC 10 281 5238
Preci PG 11 724 5962
Cascia PG 14 3217 9179
Visso MC 14 1107 10286
Arquata del Tronto AP 14 1178 11464
Ussita MC 15 444 11908
Accumoli RI 16 667 12575
Montegallo AP 17 523 13098
Cerreto di Spoleto PG 17 1075 14173
Sellano PG 19 1079 15252
Poggiodomo PG 19 117 15369
Montemonaco AP 19 604 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km W of Pescara (121014 inhabitants)
98 Km N of Tivoli (56533 inhabitants)
99 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 1.2 2019-09-09
06:54:40		 42.81 13.1278 11 2020-02-28
16:41:50		 Bollettino Sismico Italiano INGV 72335061
Reviewed
Rev100 		ML 1.6 2019-09-09
06:54:40		 42.8107 13.1123 11 2019-09-09
07:13:34		 Sala Sismica INGV-Roma 72251081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-09 06:54:40 ± 0.05
Latitude 42.8100 ± 0.0027
Longitude 13.1278 ± 0.0049
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 72335061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 411
Semi-minor axis of confidence ellipse (meter) 283
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 77
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
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 36
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.44516
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 72335061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-12 08:46:49

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 72251081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-09 07:13:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PTRJ.HHZ. 2019-09-09T06:55:33.54 3.0 undecidable manual Sn -0.96 0
IV.VIVA.HHZ. 2019-09-09T06:55:00.65 3.0 undecidable manual P 0.19 0
IV.ARVD.HHZ. 2019-09-09T06:54:55.82 3.0 undecidable manual P 0.13 0
IV.RM33.EHZ. 2019-09-09T06:54:52.01 0.3 undecidable manual S 168 34.1436 50 -0.02 72
IV.CSP1.EHZ. 2019-09-09T06:54:51.41 0.3 undecidable manual S 11 31.8459 50 -0.02 72
IV.CESX.HHZ. 2019-09-09T06:54:50.00 0.6 undecidable manual P 243 49.4172 50 0.53 42
IV.GAVE.EHE. 2019-09-09T06:54:49.02 0.3 undecidable manual S 236 23.0547 50 -0.06 73
IV.ASSB.HHZ. 2019-09-09T06:54:49.07 0.6 undecidable manual P 304 46.0206 50 0.13 46
IV.FDMO.HHE. 2019-09-09T06:54:49.38 0.3 undecidable manual S 353 25.3524 50 -0.3 69
IV.SMA1.EHZ. 2019-09-09T06:54:49.75 0.3 undecidable manual S 140 26.1516 50 -0.14 71
IV.LNSS.HHZ. 2019-09-09T06:54:49.54 0.3 undecidable manual S 197 24.0537 50 0.2 71
IV.MOMA.HNZ. 2019-09-09T06:54:48.90 0.3 undecidable manual P 269 45.4212 50 0.05 70
IV.ARRO.EHZ. 2019-09-09T06:54:48.13 0.6 undecidable manual P 229 39.1275 50 0.26 45
IV.MNTT.EHZ. 2019-09-09T06:54:48.56 0.6 undecidable manual P 53 47.1195 50 -0.56 41
IV.SEF1.HNZ. 2019-09-09T06:54:48.77 0.6 undecidable manual P 339 40.1265 50 0.74 39
IT.MTCL.HGE. 2019-09-09T06:54:48.76 0.3 undecidable manual S 333 22.9548 50 -0.27 70
IV.GUMA.HHZ. 2019-09-09T06:54:47.28 0.6 undecidable manual P 31 32.745 50 0.39 45
IV.FEMA.HNE. 2019-09-09T06:54:47.51 0.3 undecidable manual S 339 18.0708 121 -0.17 72
IV.RM33.EHZ. 2019-09-09T06:54:47.02 0.3 undecidable manual P 168 34.1436 50 -0.09 71
IV.MF5.EHZ. 2019-09-09T06:54:47.15 0.6 undecidable manual P 54 33.4443 50 0.15 47
IV.CAMP.HHZ. 2019-09-09T06:54:47.40 0.6 undecidable manual P 143 38.1285 50 -0.32 45
IV.MMO1.EHZ. 2019-09-09T06:54:47.87 0.3 undecidable manual S 58 18.9699 120 -0.1 73
IV.MML1.HNZ. 2019-09-09T06:54:47.58 0.1 undecidable manual P 339 35.9418 50 0.19 92
IV.CSP1.EHZ. 2019-09-09T06:54:46.82 0.1 undecidable manual P 11 31.8459 50 0.06 96
IV.MC2.EHZ. 2019-09-09T06:54:46.35 0.3 undecidable manual S 24 12.2766 131 0.28 71
IV.SMA1.EHZ. 2019-09-09T06:54:45.73 0.1 undecidable manual P 140 26.1516 50 -0.14 95
IT.MTCL.HGE. 2019-09-09T06:54:45.31 0.1 undecidable manual P 333 22.9548 50 -0.07 97
IV.LNSS.HHZ. 2019-09-09T06:54:45.52 0.3 undecidable manual P 197 24.0537 50 -0.04 73
IV.MTRA.HNZ. 2019-09-09T06:54:45.88 0.6 undecidable manual P 105 22.6551 50 0.54 44
IV.GAVE.EHE. 2019-09-09T06:54:45.03 0.3 undecidable manual P 236 23.0547 50 -0.38 68
IV.FDMO.HHE. 2019-09-09T06:54:45.72 0.1 undecidable manual P 353 25.3524 50 -0.03 97
IV.MMO1.EHZ. 2019-09-09T06:54:44.70 0.1 undecidable manual P 58 18.9699 120 -0.06 98
IV.FEMA.HNE. 2019-09-09T06:54:44.55 0.1 undecidable manual P 339 18.0708 121 -0.05 98
IV.MC2.EHZ. 2019-09-09T06:54:43.92 0.1 undecidable manual P 24 12.2766 131 0.25 95
IV.NRCA.HNZ. 2019-09-09T06:54:43.92 0.3 undecidable manual S 337 2.7972 165 -0.34 71
IV.NRCA.HNZ. 2019-09-09T06:54:42.71 0.1 undecidable manual P 337 2.7972 165 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHN. ML:1.2 0.000069736065 0.7616 AML other m 2019-09-09T06:54:52.48
IV.LNSS.HNE. ML:1.6 0.000257725435 1.8784 AML other m 2019-09-09T06:54:50.94
IV.CSP1.EHE. ML:1.4 0.000102433855 0.7392 AML other m 2019-09-09T06:54:51.73
IV.LNSS.HNN. ML:1.5 0.00020247602000000002 0.5088 AML other m 2019-09-09T06:54:49.88
IV.SMA1.EHN. ML:1.0 0.00005975444 1.1808 AML other m 2019-09-09T06:54:49.95
IV.SMA1.EHE. ML:1.0 0.00005030249 1.36 AML other m 2019-09-09T06:54:50.09
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