Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 16-09-2019 and time 09:52:50 (Italy) in region 3 km E Norcia (PG)

A magnitude ML 1.1 earthquake occured in region: 3 km E Norcia (PG), on

  • 16-09-2019 07:52:50 (UTC)
  • 16-09-2019 09:52:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8030, 13.1300 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 3 4957 4957
Castelsantangelo sul Nera MC 11 281 5238
Preci PG 11 724 5962
Cascia PG 13 3217 9179
Arquata del Tronto AP 14 1178 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 17 1075 14173
Poggiodomo PG 19 117 14290
Sellano PG 19 1079 15369
Montemonaco AP 20 604 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)
50 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
95 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)
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 1.1 2019-09-16
07:52:50		 42.8028 13.1297 10 2020-02-28
16:42:16		 Bollettino Sismico Italiano INGV 75079151
Reviewed
Rev100 		ML 1.2 2019-09-16
07:52:50		 42.8073 13.1287 10 2019-09-16
08:00:19		 Sala Sismica INGV-Roma 72454281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-16 07:52:50 ± 0.05
Latitude 42.8028 ± 0.0027
Longitude 13.1297 ± 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 75079151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 304
Semi-minor axis of confidence ellipse (meter) 175
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 141
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39210
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 75079151
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-12-29 10:51:20

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 72454281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-16 08:00:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IT.VRB.HGZ. 2019-09-16T07:54:52.04 3.0 undecidable manual Sn 0.51 0
GU.RNCA.HHZ. 2019-09-16T07:54:39.45 3.0 undecidable manual Sg 16.200001 0
IV.SLCN.HHZ. 2019-09-16T07:54:06.68 3.0 undecidable manual Sg 8.53 0
IV.ISPIC.HNZ. 2019-09-16T07:54:05.88 3.0 undecidable manual Pn -0.02 0
GU.GSCL.HHZ. 2019-09-16T07:53:57.05 3.0 undecidable manual Sn -2.28 0
GU.RORO.HHZ. 2019-09-16T07:53:45.52 3.0 positive manual Pn 1.45 0
IV.DGI.HHZ. 2019-09-16T07:53:43.24 3.0 undecidable manual Pg 10 0
IV.CTI.HHZ. 2019-09-16T07:53:42.83 3.0 undecidable manual Pn 2.01 0
IV.CAVE.HHZ. 2019-09-16T07:53:29.68 3.0 positive manual Pn 1.2 0
CR.BRJN.HHZ. 2019-09-16T07:53:26.39 3.0 positive manual Pn 2.73 0
IV.RIBO.EHZ.01 2019-09-16T07:53:14.46 3.0 positive manual Pg 4.05 0
IT.ORP.HGZ. 2019-09-16T07:53:13.24 3.0 undecidable manual Pn -0.6 0
IV.VENT.EHZ. 2019-09-16T07:53:07.93 3.0 undecidable manual Pn -0.86 0
IV.TERO.HHZ. 2019-09-16T07:53:04.96 0.6 undecidable manual S 117 43.5231 50 0.2 46
IV.CSP1.EHZ. 2019-09-16T07:53:01.70 0.6 undecidable manual S 11 32.6451 50 -0.16 47
IV.CESI.HHE. 2019-09-16T07:53:00.91 0.6 undecidable manual S 321 28.9488 50 0.04 48
IV.LNSS.HNZ. 2019-09-16T07:52:59.49 0.6 undecidable manual S 198 23.3544 113 0.16 48
IV.MTRA.EHE. 2019-09-16T07:52:58.95 0.6 undecidable manual S 103 22.3554 114 -0.05 49
IV.TERO.HHZ. 2019-09-16T07:52:58.80 0.3 undecidable manual P 117 43.5231 50 0.07 70
IV.GAVE.EHZ. 2019-09-16T07:52:58.99 0.3 undecidable manual S 237 22.755 114 -0.15 72
IV.MMO1.EHZ. 2019-09-16T07:52:57.89 0.6 undecidable manual S 56 19.2696 118 -0.16 48
IV.CSP1.EHZ. 2019-09-16T07:52:56.95 0.1 undecidable manual P 11 32.6451 50 -0.1 95
IV.MC2.EHZ. 2019-09-16T07:52:56.66 0.6 undecidable manual S 22 12.9759 128 0.46 46
IV.CESI.HHE. 2019-09-16T07:52:56.47 0.3 undecidable manual P 321 28.9488 50 -0.01 73
IV.GAVE.EHZ. 2019-09-16T07:52:55.56 0.1 undecidable manual P 237 22.755 114 0.08 97
IV.LNSS.HNZ. 2019-09-16T07:52:55.56 0.1 undecidable manual P 198 23.3544 113 -0.03 98
IV.MTRA.EHE. 2019-09-16T07:52:55.28 0.1 undecidable manual P 103 22.3554 114 -0.12 96
IV.MMO1.EHZ. 2019-09-16T07:52:54.71 0.1 undecidable manual P 56 19.2696 118 -0.14 96
IV.MC2.EHZ. 2019-09-16T07:52:53.99 0.1 undecidable manual P 22 12.9759 128 0.2 96
IV.NRCA.HHZ. 2019-09-16T07:52:53.93 0.6 undecidable manual S 340 3.5964 160 -0.3 48
IV.NRCA.HHZ. 2019-09-16T07:52:52.74 0.1 undecidable manual P 340 3.5964 160 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:1.5 0.0005775 1.14 AML other m 2019-09-16T07:52:54.05
IV.NRCA.HNE. ML:1.4 0.000446 0.1 AML other m 2019-09-16T07:52:54.64
IV.NRCA.HHE. ML:1.4 0.00046100000000000004 0.1 AML other m 2019-09-16T07:52:54.65
IV.GAVE.EHN. ML:0.9 0.0000498 0.16 AML other m 2019-09-16T07:53:00.09
IV.GAVE.EHE. ML:0.9 0.0000551 0.24 AML other m 2019-09-16T07:53:00.16
IV.CSP1.EHN. ML:0.7 0.000018095730000000002 0.1408 AML other m 2019-09-16T07:53:02.57
IV.CSP1.EHE. ML:0.8 0.00002398834 0.0832 AML other m 2019-09-16T07:53:02.61
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