Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 17-09-2019 and time 02:28:01 (Italy) in region 3 km NE Norcia (PG)

A magnitude ML 0.4 earthquake occured in region: 3 km NE Norcia (PG), on

  • 17-09-2019 00:28:01 (UTC)
  • 17-09-2019 02:28:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8150, 13.1040 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Preci PG 9 724 5681
Castelsantangelo sul Nera MC 10 281 5962
Cascia PG 13 3217 9179
Visso MC 13 1107 10286
Ussita MC 15 444 10730
Cerreto di Spoleto PG 15 1075 11805
Arquata del Tronto AP 17 1178 12983
Sellano PG 17 1079 14062
Poggiodomo PG 18 117 14179
Accumoli RI 18 667 14846
Montegallo AP 19 523 15369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
52 Km W of Teramo (54892 inhabitants)
57 Km NW of L'Aquila (69753 inhabitants)
67 Km E of Perugia (166134 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
98 Km N of Tivoli (56533 inhabitants)
99 Km W of Pescara (121014 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
Reviewed
Rev100 		ML 0.4 2019-09-17
00:28:01		 42.815 13.1038 9 2019-09-17
00:33:54		 Sala Sismica INGV-Roma 72476171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-17 00:28:01 ± 0.11
Latitude 42.8150 ± 0.0045
Longitude 13.1038 ± 0.0098
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72476171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 871
Semi-minor axis of confidence ellipse (meter) 201
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 292
Circular confidence region, given by single value of horizontal uncertainty (meter) 870.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.01979
Epicentral distance of station farthest from the epicenter (degree) 0.31296
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 72476171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-17 00:33:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2019-09-17T00:28:14.49 0.1 undecidable manual S 56 34.743 50 0.59 82
IV.CSP1.EHZ. 2019-09-17T00:28:12.60 0.6 undecidable manual S 15 31.746 50 -0.52 42
IV.LNSS.HNZ. 2019-09-17T00:28:10.88 0.1 undecidable manual S 192 24.0537 111 0.11 94
IV.FDMO.HHZ. 2019-09-17T00:28:10.82 0.3 undecidable manual S 357 24.5532 111 -0.11 71
IV.GAVE.EHZ. 2019-09-17T00:28:10.33 0.6 undecidable manual S 231 21.867 113 0.29 46
IV.MMO1.EHZ. 2019-09-17T00:28:09.22 0.3 undecidable manual S 63 20.3685 115 -0.37 67
IV.CSP1.EHZ. 2019-09-17T00:28:08.08 0.6 undecidable manual P 15 31.746 50 -0.25 45
IV.MF5.EHZ. 2019-09-17T00:28:08.77 1.0 negative manual P 56 34.743 50 -0.01 24
IV.MC2.EHZ. 2019-09-17T00:28:07.68 0.3 undecidable manual S 33 12.7761 126 0.4 68
IV.GAVE.EHZ. 2019-09-17T00:28:06.70 1.0 negative manual P 231 21.867 113 0.14 24
IV.T1299.EHZ. 2019-09-17T00:28:06.87 0.1 undecidable manual P 144 24.753 111 -0.23 92
IV.LNSS.HNZ. 2019-09-17T00:28:06.74 0.1 undecidable manual P 192 24.0537 111 -0.24 92
IV.FDMO.HHZ. 2019-09-17T00:28:06.55 1.0 negative manual P 357 24.5532 111 -0.52 21
IV.MC2.EHZ. 2019-09-17T00:28:05.13 0.6 positive manual P 33 12.7761 126 0.16 48
IV.NRCA.HNZ. 2019-09-17T00:28:05.14 0.1 undecidable manual S 23 2.1978 167 0 100
IV.MMO1.EHZ. 2019-09-17T00:28:05.95 1.0 undecidable manual P 63 20.3685 115 -0.35 23
IV.NRCA.HNZ. 2019-09-17T00:28:03.92 0.1 undecidable manual P 23 2.1978 167 0.19 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.2 0.000008993283 0.14 AML other m 2019-09-17T00:28:13.31
IV.FDMO.HHN. ML:0.2 0.000011106448 0.12 AML other m 2019-09-17T00:28:11.68
IV.GAVE.EHE. ML:0.8 0.000038277905 0.28 AML other m 2019-09-17T00:28:11.82
IV.GAVE.EHN. ML:0.6 0.000023179235000000002 0.32 AML other m 2019-09-17T00:28:11.01
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