Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 28-10-2019 and time 01:23:25 (UTC) in region 5 km SE Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 5 km SE Norcia (PG), on

  • 28-10-2019 01:23:25 (UTC)
  • 28-10-2019 02:23:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7700, 13.1460 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 5 4957 4957
Accumoli RI 12 667 5624
Cascia PG 12 3217 8841
Arquata del Tronto AP 12 1178 10019
Castelsantangelo sul Nera MC 14 281 10300
Preci PG 15 724 11024
Cittareale RI 17 482 11506
Montegallo AP 17 523 12029
Poggiodomo PG 18 117 12146
Visso MC 19 1107 13253
Cerreto di Spoleto PG 19 1075 14328
Amatrice RI 20 2657 16985
Ussita MC 20 444 17429

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km SE of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
47 Km W of Teramo (54892 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
72 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
94 Km W of Pescara (121014 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
96 Km W of Chieti (51815 inhabitants)
99 Km SW 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 1.2 2019-10-28
01:23:25		 42.7698 13.1455 10 2020-02-28
16:42:15		 Bollettino Sismico Italiano INGV 74937911
Reviewed
Rev100 		ML 1.1 2019-10-28
01:23:25		 42.7757 13.1548 11 2019-10-28
01:29:36		 Sala Sismica INGV-Roma 73482101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-28 01:23:25 ± 0.06
Latitude 42.7698 ± 0.0036
Longitude 13.1455 ± 0.0061
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 74937911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 458
Semi-minor axis of confidence ellipse (meter) 264
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 39
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
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) 0.06745
Epicentral distance of station farthest from the epicenter (degree) 0.56028
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 18
Type of magnitude ML
Reference to an origin 74937911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-12-24 10:55:56

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 73482101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-28 01:29:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2019-10-28T01:23:45.80 0.6 undecidable manual S 357 62.1933 50 0.77 38
IV.MOMA.HNZ. 2019-10-28T01:23:41.61 0.6 undecidable manual S 275 47.0196 50 0.62 41
IV.MF5.EHZ. 2019-10-28T01:23:38.58 0.6 undecidable manual S 46 35.1426 50 0.75 40
IV.CSP1.EHZ. 2019-10-28T01:23:37.76 0.6 undecidable manual S 8 36.0417 50 -0.3 46
IV.RM33.EHZ. 2019-10-28T01:23:36.07 0.6 undecidable manual S 169 29.4483 50 -0.24 47
IV.CESI.HNE. 2019-10-28T01:23:36.79 0.6 undecidable manual S 323 32.6451 50 -0.35 46
IV.EL6.EHZ. 2019-10-28T01:23:36.56 0.6 undecidable manual P 357 62.1933 50 -0.27 44
IV.OFFI.HHZ. 2019-10-28T01:23:35.18 0.1 undecidable manual P 67 47.619 50 0.59 83
IV.ASSB.HHN. 2019-10-28T01:23:35.34 0.3 undecidable manual P 308 49.8168 50 0.41 66
IV.FDMO.HHZ. 2019-10-28T01:23:35.91 0.6 undecidable manual S 351 29.9478 50 -0.52 44
IV.MNTT.EHZ. 2019-10-28T01:23:35.56 0.3 undecidable manual P 48 48.8178 50 0.77 58
IV.MOMA.HNZ. 2019-10-28T01:23:34.49 0.1 undecidable manual P 275 47.0196 50 -0.01 96
IV.MTRA.EHZ. 2019-10-28T01:23:33.15 0.6 undecidable manual S 94 20.4684 115 -0.32 47
IV.LNSS.HHZ. 2019-10-28T01:23:33.57 0.6 undecidable manual S 205 20.4684 115 0.12 49
IV.FEMA.HNE. 2019-10-28T01:23:33.96 0.6 undecidable manual S 340 22.6551 113 -0.21 48
IV.MMO1.EHZ. 2019-10-28T01:23:33.29 0.6 undecidable manual S 46 20.5683 115 -0.21 48
IV.SMA1.EHZ. 2019-10-28T01:23:33.62 0.6 undecidable manual S 135 21.867 113 -0.29 47
IV.TERO.HHZ. 2019-10-28T01:23:33.21 0.3 undecidable manual P 113 40.8258 50 -0.33 68
IV.T1299.HNN. 2019-10-28T01:23:33.31 0.6 undecidable manual S 143 18.7701 117 0.39 46
IV.ARRO.EHZ. 2019-10-28T01:23:32.88 0.3 undecidable manual P 236 37.5291 50 -0.16 71
IV.MC2.EHZ. 2019-10-28T01:23:32.32 0.6 undecidable manual S 13 16.0728 121 0.21 48
IV.CSP1.EHZ. 2019-10-28T01:23:32.49 0.1 undecidable manual P 8 36.0417 50 -0.32 91
IV.CESI.HNE. 2019-10-28T01:23:32.02 0.3 undecidable manual P 323 32.6451 50 -0.26 70
IV.MF5.EHZ. 2019-10-28T01:23:32.75 0.1 undecidable manual P 46 35.1426 50 0.08 96
IV.CAMP.HHE. 2019-10-28T01:23:32.05 0.3 undecidable manual P 140 33.744 50 -0.4 68
IV.FDMO.HHZ. 2019-10-28T01:23:31.52 0.1 undecidable manual P 351 29.9478 50 -0.35 92
IV.RM33.EHZ. 2019-10-28T01:23:31.69 0.3 undecidable manual P 169 29.4483 50 -0.11 72
IV.T1299.HNN. 2019-10-28T01:23:30.05 0.1 undecidable manual P 143 18.7701 117 0.21 96
IV.MTRA.EHZ. 2019-10-28T01:23:30.11 0.3 undecidable manual P 94 20.4684 115 -0.05 75
IV.LNSS.HHZ. 2019-10-28T01:23:30.25 0.1 undecidable manual P 205 20.4684 115 0.11 98
IV.FEMA.HNE. 2019-10-28T01:23:30.67 0.3 undecidable manual P 340 22.6551 113 0.11 73
IV.MMO1.EHZ. 2019-10-28T01:23:30.01 0.1 positive manual P 46 20.5683 115 -0.16 97
IV.SMA1.EHZ. 2019-10-28T01:23:30.33 0.1 undecidable manual P 135 21.867 113 -0.08 98
IV.NRCA.HNZ. 2019-10-28T01:23:29.63 0.6 undecidable manual S 340 7.4814 142 -0.2 49
IV.MC2.EHZ. 2019-10-28T01:23:29.50 0.1 undecidable manual P 13 16.0728 121 0.13 99
IV.NRCA.HNZ. 2019-10-28T01:23:28.18 0.1 negative manual P 340 7.4814 142 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.7 0.0008190000000000001 0.14 AML other m 2019-10-28T01:23:29.66
IV.NRCA.HNE. ML:1.8 0.0009875 0.16 AML other m 2019-10-28T01:23:29.78
IV.NRCA.HHE. ML:1.9 0.0010979999999999998 0.16 AML other m 2019-10-28T01:23:29.78
IV.NRCA.HNN. ML:1.7 0.0007889999999999999 0.42 AML other m 2019-10-28T01:23:29.66
IV.MTRA.EHN. ML:1.4 0.0001815 0.74 AML other m 2019-10-28T01:23:33.31
IV.MTRA.EHE. ML:1.4 0.00020600000000000002 0.34 AML other m 2019-10-28T01:23:33.61
IV.LNSS.HHN. ML:1.6 0.0002845 0.28 AML other m 2019-10-28T01:23:34.09
IV.LNSS.HHE. ML:1.6 0.0002715 1.64 AML other m 2019-10-28T01:23:34.92
IV.FDMO.HHN. ML:1.1 0.00005824999999999999 0.26 AML other m 2019-10-28T01:23:36.20
IV.FDMO.HHE. ML:1.0 0.0000551 1.08 AML other m 2019-10-28T01:23:36.22
IV.RM33.EHN. ML:0.8 0.000030850000000000004 1.18 AML other m 2019-10-28T01:23:36.86
IV.RM33.EHE. ML:0.9 0.000039149999999999996 1.04 AML other m 2019-10-28T01:23:36.29
IV.SMA1.EHN. ML:0.9 0.000047600000000000005 0.3 AML other m 2019-10-28T01:23:37.29
IV.CSP1.EHE. ML:1.1 0.000048349999999999996 0.58 AML other m 2019-10-28T01:23:38.57
IV.CSP1.EHN. ML:1.3 0.0000737 0.94 AML other m 2019-10-28T01:23:38.50
IV.TERO.HHE. ML:0.6 0.00001645 0.28 AML other m 2019-10-28T01:23:39.88
IV.SMA1.EHE. ML:0.9 0.00005985 0.38 AML other m 2019-10-28T01:23:40.25
IV.TERO.HHN. ML:0.9 0.0000247 1.5 AML other m 2019-10-28T01:23:40.20
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