Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 11-08-2019 and time 20:29:17 (Italy) in region 8 km E Norcia (PG)

A magnitude ML 1.5 earthquake occured in region: 8 km E Norcia (PG), on

  • 11-08-2019 18:29:17 (UTC)
  • 11-08-2019 20:29:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7820, 13.1900 at 9 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 8 4957 4957
Arquata del Tronto AP 9 1178 6135
Accumoli RI 11 667 6802
Castelsantangelo sul Nera MC 13 281 7083
Montegallo AP 14 523 7606
Cascia PG 16 3217 10823
Preci PG 16 724 11547
Montemonaco AP 17 604 12151
Acquasanta Terme AP 18 2916 15067
Cittareale RI 18 482 15549
Visso MC 19 1107 16656
Amatrice RI 19 2657 19313
Ussita MC 19 444 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
44 Km W of Teramo (54892 inhabitants)
51 Km E of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
75 Km E of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
93 Km NW of Chieti (51815 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
97 Km S of Ancona (100861 inhabitants)
98 Km E of Viterbo (67173 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 2019-08-11
18:29:17		 42.7815 13.1905 9 2019-11-13
14:31:06		 Bollettino Sismico Italiano INGV 73248251
Reviewed
Rev100 		ML 1.6 2019-08-11
18:29:17		 42.7802 13.1892 10 2019-08-11
18:45:46		 Sala Sismica INGV-Roma 71387621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-11 18:29:17 ± 0.05
Latitude 42.7815 ± 0.0027
Longitude 13.1905 ± 0.0049
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73248251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 389
Semi-minor axis of confidence ellipse (meter) 145
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 73
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.07644
Epicentral distance of station farthest from the epicenter (degree) 0.61514
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 37
Type of magnitude ML
Reference to an origin 73248251
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-14 10:53:01

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 31
Type of magnitude ML
Reference to an origin 71387621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-11 18:45:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2019-08-11T18:29:34.61 0.3 undecidable manual S 304 52.0035 50 0.38 64
IV.VCEL.EHZ. 2019-08-11T18:29:30.05 0.3 undecidable manual P 129 68.2761 50 0.38 62
IV.PF6.EHN. 2019-08-11T18:29:30.91 0.3 undecidable manual S 0 39.5271 50 0 71
IV.MF5.EHZ. 2019-08-11T18:29:29.51 0.6 undecidable manual S 44 31.6461 50 0.71 40
IV.GUMA.HHZ. 2019-08-11T18:29:29.66 0.3 undecidable manual S 21 33.3444 50 0.41 66
IV.CESI.HHE. 2019-08-11T18:29:29.21 0.6 undecidable manual S 317 33.9438 50 -0.21 46
IV.FDMO.HHZ. 2019-08-11T18:29:28.23 0.6 undecidable manual S 344 29.5482 50 0 48
IV.RM33.EHZ. 2019-08-11T18:29:28.65 0.3 undecidable manual S 176 30.2475 50 0.21 69
IV.EL6.EHZ. 2019-08-11T18:29:28.74 0.3 undecidable manual P 353 61.1943 50 0.16 66
IV.CAMP.HHZ. 2019-08-11T18:29:28.62 0.3 undecidable manual S 147 32.5452 50 -0.42 66
IV.SNTG.HHZ. 2019-08-11T18:29:27.80 0.3 undecidable manual P 339 56.2992 50 -0.03 69
IV.GIGS.HHZ. 2019-08-11T18:29:26.24 0.3 undecidable manual P 139 47.9187 50 -0.3 66
IV.LNSS.HHZ. 2019-08-11T18:29:26.52 0.3 undecidable manual S 212 23.2545 112 0.31 69
IV.ASSB.HHZ. 2019-08-11T18:29:26.98 0.1 undecidable manual P 304 52.0035 50 -0.19 89
IV.ARRO.EHZ. 2019-08-11T18:29:25.95 0.6 undecidable manual P 237 41.3253 50 0.44 43
IV.T1299.EHZ. 2019-08-11T18:29:25.04 0.6 undecidable manual S 155 17.9709 117 0.5 44
IV.MML1.HNE. 2019-08-11T18:29:25.32 0.3 undecidable manual P 334 40.9257 50 -0.13 69
IV.SMA1.EHZ. 2019-08-11T18:29:25.27 0.3 undecidable manual S 145 20.4684 115 -0.05 73
IV.PF6.EHN. 2019-08-11T18:29:24.88 0.3 undecidable manual P 0 39.5271 50 -0.36 66
IV.MTRA.EHZ. 2019-08-11T18:29:24.17 0.3 undecidable manual S 99 16.9719 119 -0.07 73
IV.CESI.HHE. 2019-08-11T18:29:24.26 0.3 undecidable manual P 317 33.9438 50 -0.13 70
IV.MF5.EHZ. 2019-08-11T18:29:24.28 0.1 undecidable manual P 44 31.6461 50 0.25 91
IV.MC2.EHZ. 2019-08-11T18:29:24.11 0.6 undecidable manual S 359 14.3745 123 0.64 42
IV.TERO.HHZ. 2019-08-11T18:29:24.60 0.3 undecidable manual P 117 38.0286 50 -0.41 66
IV.GUMA.HHZ. 2019-08-11T18:29:24.33 0.1 undecidable manual P 21 33.3444 50 0.04 95
IV.MMO1.EHZ. 2019-08-11T18:29:24.10 0.3 undecidable manual S 40 17.1717 119 -0.18 71
IV.RM33.EHZ. 2019-08-11T18:29:23.63 0.3 undecidable manual P 176 30.2475 50 -0.18 70
IT.MTCL.HGZ. 2019-08-11T18:29:23.16 0.3 undecidable manual P 327 28.2495 108 -0.31 68
IV.CAMP.HHZ. 2019-08-11T18:29:23.84 0.3 undecidable manual P 147 32.5452 50 -0.32 67
IV.GAVE.HNZ. 2019-08-11T18:29:23.12 0.3 undecidable manual P 248 26.0517 110 0.05 72
IV.FDMO.HHZ. 2019-08-11T18:29:23.36 0.3 undecidable manual P 344 29.5482 50 -0.34 68
IV.LNSS.HHZ. 2019-08-11T18:29:22.53 0.3 undecidable manual P 212 23.2545 112 -0.01 73
IV.MC2.EHZ. 2019-08-11T18:29:21.17 0.3 undecidable manual P 359 14.3745 123 0.22 71
IV.SMA1.EHZ. 2019-08-11T18:29:21.94 0.1 positive manual P 145 20.4684 115 -0.08 96
IV.MMO1.EHZ. 2019-08-11T18:29:21.29 0.1 undecidable manual P 40 17.1717 119 -0.13 96
IV.NRCA.HNZ. 2019-08-11T18:29:21.52 0.3 undecidable manual S 313 8.4804 138 -0.36 70
IV.MTRA.EHZ. 2019-08-11T18:29:21.37 0.3 undecidable manual P 99 16.9719 119 -0.03 74
IV.T1299.EHZ. 2019-08-11T18:29:21.83 0.1 undecidable manual P 155 17.9709 117 0.26 93
IV.NRCA.HNZ. 2019-08-11T18:29:20.03 0.1 positive manual P 313 8.4804 138 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHE. ML:1.7 0.0004182336 0.1408 AML other m 2019-08-11T18:29:25.70
IV.MTRA.EHN. ML:1.8 0.0005210593 0.2048 AML other m 2019-08-11T18:29:24.72
IV.MTRA.HNE. ML:1.7 0.0004195447 0.1408 AML other m 2019-08-11T18:29:25.63
IV.MTRA.HNN. ML:1.8 0.00060623935 0.4096 AML other m 2019-08-11T18:29:27.27
IV.SMA1.EHE. ML:1.6 0.00027557724999999997 0.32 AML other m 2019-08-11T18:29:29.82
IV.SMA1.EHN. ML:1.6 0.00031819515 0.2304 AML other m 2019-08-11T18:29:25.48
IV.LNSS.HNE. ML:1.4 0.00015595145499999998 0.1152 AML other m 2019-08-11T18:29:27.94
IV.LNSS.HHE. ML:1.4 0.00017452652499999998 0.1408 AML other m 2019-08-11T18:29:27.94
IV.LNSS.HNN. ML:1.5 0.00019979476500000002 0.2304 AML other m 2019-08-11T18:29:28.40
IV.LNSS.HHN. ML:1.5 0.0002186385 0.2048 AML other m 2019-08-11T18:29:27.14
IV.FDMO.HHE. ML:1.4 0.00012019352999999999 0.2432 AML other m 2019-08-11T18:29:29.96
IV.FDMO.HHN. ML:1.4 0.0001329911 0.1792 AML other m 2019-08-11T18:29:30.50
IV.RM33.HNE. ML:1.6 0.00019774915000000002 0.192 AML other m 2019-08-11T18:29:29.56
IV.RM33.EHE. ML:1.6 0.00018773935 0.1152 AML other m 2019-08-11T18:29:29.57
IV.RM33.EHN. ML:1.5 0.00013845075000000002 0.1664 AML other m 2019-08-11T18:29:29.60
IV.RM33.HNN. ML:1.5 0.00014523822 0.3072 AML other m 2019-08-11T18:29:31.44
IV.CAMP.HHE. ML:1.4 0.00009986076 0.1792 AML other m 2019-08-11T18:29:28.83
IV.CAMP.HHN. ML:1.3 0.00008744562 0.2176 AML other m 2019-08-11T18:29:28.86
IV.MF5.EHN. ML:1.6 0.00016617025000000002 0.4224 AML other m 2019-08-11T18:29:29.99
IV.MF5.EHE. ML:1.5 0.00013346185 0.4224 AML other m 2019-08-11T18:29:30.37
IV.GUMA.HHN. ML:1.8 0.00027689085000000003 0.2176 AML other m 2019-08-11T18:29:32.16
IV.GUMA.HNE. ML:2.0 0.00038375455 0.2304 AML other m 2019-08-11T18:29:31.45
IV.GUMA.HHE. ML:2.1 0.0005141334 0.2176 AML other m 2019-08-11T18:29:31.34
IV.TERO.HHN. ML:1.5 0.00011101675 0.1024 AML other m 2019-08-11T18:29:30.56
IV.TERO.HHE. ML:1.4 0.00008744685499999999 0.1408 AML other m 2019-08-11T18:29:30.70
IV.TERO.HNN. ML:1.3 0.00007206421000000001 0.4352 AML other m 2019-08-11T18:29:33.41
IV.TERO.HNE. ML:2.0 0.00039838275 0.9216 AML other m 2019-08-11T18:29:34.30
IV.ARRO.EHN. ML:1.1 0.000041094384999999996 0.2048 AML other m 2019-08-11T18:29:34.30
IV.ARRO.EHE. ML:1.1 0.000039847835 0.2048 AML other m 2019-08-11T18:29:34.07
IV.ASSB.HHN. ML:1.4 0.000059991795000000004 0.1024 AML other m 2019-08-11T18:29:36.16
IV.ASSB.HHE. ML:1.6 0.000088261895 0.1024 AML other m 2019-08-11T18:29:35.14
IV.SNTG.HHN. ML:1.2 0.000039959889999999996 0.2048 AML other m 2019-08-11T18:29:36.72
IV.SNTG.HHE. ML:1.1 0.00003147714 0.256 AML other m 2019-08-11T18:29:36.71
IV.EL6.EHN. ML:1.6 0.000079553555 0.2688 AML other m 2019-08-11T18:29:42.20
IV.EL6.EHE. ML:1.5 0.00007183237 0.2816 AML other m 2019-08-11T18:29:39.88
IV.VCEL.EHE. ML:1.5 0.000049174129999999996 0.4736 AML other m 2019-08-11T18:29:43.92
IV.VCEL.EHN. ML:1.4 0.000046458175 0.5376 AML other m 2019-08-11T18:29:43.66
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