Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 19-09-2019 and time 06:31:50 (UTC) in region 3 km E Norcia (PG)

A magnitude ML 1.5 earthquake occured in region: 3 km E Norcia (PG), on

  • 19-09-2019 06:31:50 (UTC)
  • 19-09-2019 08:31:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8030, 13.1250 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 15 1178 10357
Visso MC 15 1107 11464
Accumoli RI 16 667 12131
Ussita MC 16 444 12575
Cerreto di Spoleto PG 17 1075 13650
Montegallo AP 18 523 14173
Poggiodomo PG 18 117 14290
Sellano PG 19 1079 15369
Montemonaco AP 20 604 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
90 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)
97 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 1.5 2019-09-19
06:31:50		 42.8028 13.125 10 2020-02-28
16:42:06		 Bollettino Sismico Italiano INGV 73905711
Reviewed
Rev100 		ML 1.5 2019-09-19
06:31:50		 42.8003 13.1307 10 2019-09-19
06:43:16		 Sala Sismica INGV-Roma 72545531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-19 06:31:50 ± 0.06
Latitude 42.8028 ± 0.0027
Longitude 13.1250 ± 0.0049
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 73905711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 438
Semi-minor axis of confidence ellipse (meter) 255
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 97
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
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 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.03148
Epicentral distance of station farthest from the epicenter (degree) 0.52610
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 72545531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-19 06:43:16

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 73905711
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-07 14:52:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2019-09-19T06:32:09.27 0.6 undecidable manual S 358 58.3971 50 0.77 38
IV.MF5.EHZ. 2019-09-19T06:32:02.85 0.6 undecidable manual S 53 34.0437 50 0.85 38
IV.MML1.HNE. 2019-09-19T06:32:02.48 0.6 undecidable manual S 340 36.6411 50 -0.2 47
IV.CSP1.EHZ. 2019-09-19T06:32:01.47 0.6 undecidable manual S 11 32.745 50 -0.16 47
IV.RM33.EHZ. 2019-09-19T06:32:01.85 0.6 undecidable manual S 167 33.4443 50 0.03 49
IV.CESI.HNZ. 2019-09-19T06:32:00.48 0.6 undecidable manual S 321 28.6491 50 -0.08 49
IV.EL6.EHZ. 2019-09-19T06:32:00.81 0.1 undecidable manual P 358 58.3971 50 0.05 93
IV.LNSS.HHZ. 2019-09-19T06:31:59.08 0.6 undecidable manual S 197 23.2545 113 0.13 49
IV.FDMO.HHZ. 2019-09-19T06:31:59.51 0.6 undecidable manual S 353 26.0517 50 -0.36 46
IV.MTRA.EHZ. 2019-09-19T06:31:58.45 0.6 undecidable manual S 103 22.6551 114 -0.33 47
IV.GAVE.EHZ. 2019-09-19T06:31:58.90 0.6 undecidable manual S 237 22.4553 114 0.19 48
IT.MTCL.HGZ. 2019-09-19T06:31:58.72 0.6 undecidable manual S 334 23.5542 113 -0.33 46
IV.MML1.HNE. 2019-09-19T06:31:57.31 0.6 undecidable manual P 340 36.6411 50 -0.09 48
IV.MMO1.EHZ. 2019-09-19T06:31:57.49 0.6 undecidable manual S 57 19.5693 117 -0.32 47
IV.FEMA.HNE. 2019-09-19T06:31:57.43 0.6 undecidable manual S 341 18.6702 118 -0.1 49
IV.MF5.EHZ. 2019-09-19T06:31:57.22 0.3 undecidable manual P 53 34.0437 50 0.22 70
IV.CSP1.EHZ. 2019-09-19T06:31:56.67 0.1 undecidable manual P 11 32.745 50 -0.13 95
IV.RM33.EHZ. 2019-09-19T06:31:56.70 0.3 undecidable manual P 167 33.4443 50 -0.2 70
IV.CESI.HNZ. 2019-09-19T06:31:56.11 0.1 undecidable manual P 321 28.6491 50 -0.07 97
IV.MC2.EHZ. 2019-09-19T06:31:56.45 0.6 undecidable manual S 23 13.0758 127 0.55 45
IV.GAVE.EHZ. 2019-09-19T06:31:55.18 0.3 undecidable manual P 237 22.4553 114 0.07 74
IT.MTCL.HGZ. 2019-09-19T06:31:55.18 0.3 undecidable manual P 334 23.5542 113 -0.12 73
IV.LNSS.HHZ. 2019-09-19T06:31:55.27 0.1 undecidable manual P 197 23.2545 113 0.02 99
IV.FDMO.HHZ. 2019-09-19T06:31:55.60 0.1 positive manual P 353 26.0517 50 -0.18 96
IV.MTRA.EHZ. 2019-09-19T06:31:54.90 0.6 undecidable manual P 103 22.6551 114 -0.25 47
IV.MMO1.EHZ. 2019-09-19T06:31:54.45 0.1 undecidable manual P 57 19.5693 117 -0.14 97
IV.FEMA.HNE. 2019-09-19T06:31:54.88 0.6 undecidable manual P 341 18.6702 118 0.45 46
IV.MC2.EHZ. 2019-09-19T06:31:53.70 0.1 positive manual P 23 13.0758 127 0.22 97
IV.NRCA.HNZ. 2019-09-19T06:31:53.62 0.6 undecidable manual S 346 3.4965 160 -0.22 49
IV.NRCA.HNZ. 2019-09-19T06:31:52.44 0.1 undecidable manual P 346 3.4965 160 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:1.9 0.00148 0.14 AML other m 2019-09-19T06:31:53.74
IV.NRCA.HHN. ML:1.9 0.00156 0.14 AML other m 2019-09-19T06:31:53.74
IV.NRCA.HHE. ML:1.8 0.001185 0.12 AML other m 2019-09-19T06:31:54.26
IV.NRCA.HNE. ML:1.8 0.001125 0.12 AML other m 2019-09-19T06:31:54.32
IV.GAVE.EHN. ML:1.2 0.0001095 0.22 AML other m 2019-09-19T06:31:59.20
IV.GAVE.EHE. ML:1.3 0.00013350000000000002 0.24 AML other m 2019-09-19T06:31:59.72
IV.FDMO.HHE. ML:1.0 0.0000492 0.94 AML other m 2019-09-19T06:31:59.74
IV.FDMO.HHN. ML:1.0 0.000048549999999999994 1.72 AML other m 2019-09-19T06:32:00.05
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