Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 27-09-2019 and time 22:43:26 (Italy) in region 3 km E Norcia (PG)

A magnitude ML 1.7 earthquake occured in region: 3 km E Norcia (PG), on

  • 27-09-2019 20:43:26 (UTC)
  • 27-09-2019 22:43:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8050, 13.1230 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 10 281 5238
Preci PG 11 724 5962
Cascia PG 13 3217 9179
Visso MC 14 1107 10286
Arquata del Tronto AP 15 1178 11464
Ussita MC 16 444 11908
Accumoli RI 16 667 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 E 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 1.7 2019-09-27
20:43:26		 42.8047 13.1228 10 2020-02-28
16:41:55		 Bollettino Sismico Italiano INGV 73191441
Reviewed
Rev100 		ML 1.7 2019-09-27
20:43:26		 42.8112 13.1223 11 2019-09-27
20:51:44		 Sala Sismica INGV-Roma 72841611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-27 20:43:26 ± 0.05
Latitude 42.8047 ± 0.0027
Longitude 13.1228 ± 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 73191441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 318
Semi-minor axis of confidence ellipse (meter) 158
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 76
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 47
Number of associated phases, regardless of their use for origin computation 70
Number of defining phases 69
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.86515
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 35
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations 45
Type of magnitude ML
Reference to an origin 73191441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-11 06:23:42

ML:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations 50
Type of magnitude ML
Reference to an origin 72841611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-27 20:51:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIR.HHZ. 2019-09-27T20:43:57.75 3.0 undecidable manual Pg 2.36 0
IV.MPAG.EHZ. 2019-09-27T20:43:54.95 0.3 undecidable manual S 342 96.0261 50 0.17 62
IV.ARVD.HHZ. 2019-09-27T20:43:50.56 0.1 undecidable manual S 349 78.2661 50 0.52 79
IV.MURB.HHZ. 2019-09-27T20:43:48.11 0.1 undecidable manual S 317 70.2741 50 0.21 86
IV.ATCC.EHZ. 2019-09-27T20:43:45.26 0.1 undecidable manual S 317 57.5979 50 0.74 75
IV.EL6.EHZ. 2019-09-27T20:43:45.01 0.1 undecidable manual S 358 58.1973 50 0.32 86
IV.FIAM.HHZ. 2019-09-27T20:43:45.07 0.1 undecidable manual S 180 59.496 50 0.04 91
IV.SNTG.HHZ. 2019-09-27T20:43:43.04 0.1 undecidable manual S 344 52.1034 50 -0.01 92
IV.MPAG.EHZ. 2019-09-27T20:43:43.28 0.3 undecidable manual P 342 96.0261 50 0.52 57
IV.GIGS.HHZ. 2019-09-27T20:43:43.39 0.1 undecidable manual S 137 53.6019 50 -0.05 91
IV.MNTT.EHZ. 2019-09-27T20:43:42.05 0.1 undecidable manual S 53 47.8188 50 0.14 91
IV.MOMA.HHZ. 2019-09-27T20:43:41.51 0.1 undecidable manual S 270 45.0216 50 0.36 87
IV.CESX.HHZ. 2019-09-27T20:43:41.36 0.1 undecidable manual S 244 48.8178 50 -0.81 74
IT.GNU.HGE. 2019-09-27T20:43:41.52 0.3 undecidable manual S 270 45.0216 50 0.37 65
IV.SAP2.EHZ. 2019-09-27T20:43:40.34 0.1 undecidable manual S 35 39.4272 50 0.69 79
IV.TERO.HHZ. 2019-09-27T20:43:40.67 0.1 undecidable manual S 117 44.1225 50 -0.24 89
IV.MURB.HHZ. 2019-09-27T20:43:39.53 0.1 undecidable manual P 317 70.2741 50 0.75 73
IV.SEF1.HNN. 2019-09-27T20:43:39.11 0.3 undecidable manual S 340 40.5261 50 -0.85 55
IV.ARRO.EHZ. 2019-09-27T20:43:39.43 0.1 undecidable manual S 229 38.4282 50 0.04 94
IV.ARVD.HHZ. 2019-09-27T20:43:39.83 0.1 undecidable manual P 349 78.2661 50 -0.2 85
IV.PF6.EHN. 2019-09-27T20:43:38.54 0.1 undecidable manual S 9 37.4292 50 -0.59 83
IV.GUMA.HHZ. 2019-09-27T20:43:38.18 0.1 undecidable manual S 31 33.4443 50 0.12 93
IV.MML1.HNE. 2019-09-27T20:43:38.41 0.1 undecidable manual S 340 36.4413 50 -0.45 87
IV.CAMP.HHZ. 2019-09-27T20:43:38.87 0.1 undecidable manual S 142 37.8288 50 -0.38 88
IV.MF5.EHN. 2019-09-27T20:43:38.89 0.1 undecidable manual S 53 34.0437 50 0.65 81
IV.RM33.EHZ. 2019-09-27T20:43:37.95 0.1 undecidable manual S 167 33.6441 50 -0.17 92
IV.CSP1.EHZ. 2019-09-27T20:43:37.22 0.1 undecidable manual S 12 32.5452 50 -0.61 83
IV.FIAM.HHZ. 2019-09-27T20:43:36.88 0.1 undecidable manual P 180 59.496 50 -0.25 87
IV.OFFI.HHZ. 2019-09-27T20:43:36.03 0.1 positive manual P 72 48.0186 50 0.68 78
IV.ATCC.EHZ. 2019-09-27T20:43:36.99 0.1 positive manual P 317 57.5979 50 0.16 89
IV.CESI.HHZ. 2019-09-27T20:43:36.20 0.1 undecidable manual S 321 28.4493 50 -0.53 86
IV.EL6.EHZ. 2019-09-27T20:43:36.67 0.1 undecidable manual P 358 58.1973 50 -0.26 87
IV.MOMA.HHZ. 2019-09-27T20:43:35.18 0.1 undecidable manual P 270 45.0216 50 0.29 88
IV.GIGS.HHZ. 2019-09-27T20:43:35.87 0.1 undecidable manual P 137 53.6019 50 -0.34 86
IV.FDMO.HHZ. 2019-09-27T20:43:35.32 0.1 undecidable manual S 354 25.8519 110 -0.58 84
IV.CESX.HHZ. 2019-09-27T20:43:35.52 0.1 undecidable manual P 244 48.8178 50 0.04 92
IT.GNU.HGE. 2019-09-27T20:43:35.44 0.3 undecidable manual P 270 45.0216 50 0.55 62
IV.SMA1.EHZ. 2019-09-27T20:43:35.76 0.1 undecidable manual S 138 25.9518 110 -0.16 94
IV.SNTG.HHZ. 2019-09-27T20:43:35.73 0.1 undecidable manual P 344 52.1034 50 -0.26 88
IV.LNSS.HHZ. 2019-09-27T20:43:35.36 0.1 undecidable manual S 197 23.3544 112 0.27 92
IV.MNTT.EHZ. 2019-09-27T20:43:35.96 0.1 undecidable manual P 53 47.8188 50 0.63 80
IV.T1299.EHE. 2019-09-27T20:43:35.25 0.1 undecidable manual S 145 22.9548 113 0.3 92
IV.SEF1.HNN. 2019-09-27T20:43:34.32 0.3 undecidable manual P 340 40.5261 50 0.12 69
IV.MTRA.EHZ. 2019-09-27T20:43:34.76 0.1 undecidable manual S 103 22.8549 113 -0.18 94
IT.MTCL.HGE. 2019-09-27T20:43:34.64 0.1 undecidable manual S 334 23.2545 112 -0.42 89
IV.SAP2.EHZ. 2019-09-27T20:43:34.25 0.1 negative manual P 35 39.4272 50 0.22 90
IV.TERO.HHZ. 2019-09-27T20:43:34.59 0.1 undecidable manual P 117 44.1225 50 -0.16 91
IV.CAMP.HHZ. 2019-09-27T20:43:33.51 0.1 positive manual P 142 37.8288 50 -0.28 90
IV.MF5.EHN. 2019-09-27T20:43:33.33 0.1 undecidable manual P 53 34.0437 50 0.12 93
IV.ARRO.EHZ. 2019-09-27T20:43:33.76 0.1 positive manual P 229 38.4282 50 -0.12 93
IV.PF6.EHN. 2019-09-27T20:43:33.32 0.1 positive manual P 9 37.4292 50 -0.4 87
IV.MMO1.EHZ. 2019-09-27T20:43:33.77 0.1 undecidable manual S 58 19.6692 116 -0.13 95
IV.GUMA.HHZ. 2019-09-27T20:43:33.12 0.1 positive manual P 31 33.4443 50 0.01 95
IV.MML1.HNE. 2019-09-27T20:43:33.27 0.1 undecidable manual P 340 36.4413 50 -0.29 90
IV.FEMA.HNE. 2019-09-27T20:43:33.40 0.3 undecidable manual S 341 18.4704 117 -0.14 72
IV.CESI.HHZ. 2019-09-27T20:43:32.21 0.1 negative manual P 321 28.4493 50 -0.13 94
IV.CSP1.EHZ. 2019-09-27T20:43:32.64 0.1 positive manual P 12 32.5452 50 -0.33 89
IV.MC2.EHZ. 2019-09-27T20:43:32.24 0.1 undecidable manual S 24 12.9759 126 0.32 93
IV.RM33.EHZ. 2019-09-27T20:43:32.97 0.1 undecidable manual P 167 33.6441 50 -0.17 92
IV.LNSS.HHZ. 2019-09-27T20:43:31.48 0.1 positive manual P 197 23.3544 112 0.09 96
IV.T1299.EHE. 2019-09-27T20:43:31.52 0.1 undecidable manual P 145 22.9548 113 0.21 93
IV.MTRA.EHZ. 2019-09-27T20:43:31.17 0.1 undecidable manual P 103 22.8549 113 -0.13 95
IV.FDMO.HHZ. 2019-09-27T20:43:31.61 0.1 positive manual P 354 25.8519 110 -0.25 92
IT.MTCL.HGE. 2019-09-27T20:43:31.20 0.1 undecidable manual P 334 23.2545 112 -0.17 94
IV.SMA1.EHZ. 2019-09-27T20:43:31.90 0.1 undecidable manual P 138 25.9518 110 0.03 96
IV.MMO1.EHZ. 2019-09-27T20:43:30.56 0.1 positive manual P 58 19.6692 116 -0.14 95
IV.FEMA.HNE. 2019-09-27T20:43:30.91 0.3 undecidable manual P 341 18.4704 117 0.41 68
IV.NRCA.HNZ. 2019-09-27T20:43:29.79 0.1 undecidable manual S 348 3.2967 161 -0.04 100
IV.MC2.EHZ. 2019-09-27T20:43:29.81 0.1 positive manual P 24 12.9759 126 0.25 94
IV.NRCA.HNZ. 2019-09-27T20:43:28.59 0.1 negative manual P 348 3.2967 161 0.24 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:2.3 0.0041403645 0.128 AML other m 2019-09-27T20:43:30.48
IV.NRCA.HNN. ML:2.5 0.0062606269999999995 0.1408 AML other m 2019-09-27T20:43:29.93
IV.NRCA.HHN. ML:2.5 0.0066475575 0.1408 AML other m 2019-09-27T20:43:29.93
IV.NRCA.HHE. ML:2.4 0.004543103000000001 0.128 AML other m 2019-09-27T20:43:30.48
IV.MTRA.EHE. ML:1.7 0.0003333992 0.1024 AML other m 2019-09-27T20:43:35.78
IV.MTRA.EHN. ML:1.8 0.00037157779999999994 0.1408 AML other m 2019-09-27T20:43:36.49
IV.MTRA.HNE. ML:1.7 0.0003309356 0.1792 AML other m 2019-09-27T20:43:35.77
IV.LNSS.HNE. ML:2.3 0.001163805 0.128 AML other m 2019-09-27T20:43:35.91
IV.LNSS.HHE. ML:2.3 0.0012992754999999999 0.1152 AML other m 2019-09-27T20:43:35.84
IV.LNSS.HNN. ML:2.1 0.0008914558500000001 0.1792 AML other m 2019-09-27T20:43:35.64
IV.LNSS.HHN. ML:2.2 0.0009330610999999999 0.1792 AML other m 2019-09-27T20:43:35.72
IV.FDMO.HHE. ML:1.7 0.00026656360000000003 0.2048 AML other m 2019-09-27T20:43:36.85
IV.FDMO.HHN. ML:1.6 0.00025092245000000004 0.1792 AML other m 2019-09-27T20:43:36.38
IV.CESI.HNN. ML:1.8 0.00031087845000000005 0.3072 AML other m 2019-09-27T20:43:36.20
IV.CESI.HHE. ML:1.4 0.00012603615000000002 0.192 AML other m 2019-09-27T20:43:37.91
IV.CSP1.EHE. ML:1.8 0.00029823115 0.1408 AML other m 2019-09-27T20:43:38.09
IV.CSP1.EHN. ML:1.8 0.00028985355 0.192 AML other m 2019-09-27T20:43:37.76
IV.RM33.EHN. ML:1.6 0.0001551703 0.2176 AML other m 2019-09-27T20:43:39.79
IV.RM33.HNN. ML:1.6 0.0001694374 0.2304 AML other m 2019-09-27T20:43:39.78
IV.CAMP.HHE. ML:1.0 0.000034645164999999996 0.1664 AML other m 2019-09-27T20:43:39.14
IV.ARRO.EHE. ML:1.4 0.000097692105 0.1664 AML other m 2019-09-27T20:43:41.95
IV.ARRO.EHN. ML:1.4 0.00008316047999999999 0.1792 AML other m 2019-09-27T20:43:41.60
IV.SAP2.EHN. ML:2.7 0.0017070965 0.1408 AML other m 2019-09-27T20:43:40.63
IV.SAP2.EHE. ML:2.0 0.00037791474999999996 0.1408 AML other m 2019-09-27T20:43:41.36
IV.TERO.HNN. ML:1.2 0.000054453635 0.192 AML other m 2019-09-27T20:43:42.41
IV.TERO.HHE. ML:1.4 0.000076214455 0.128 AML other m 2019-09-27T20:43:41.92
IV.TERO.HHN. ML:1.5 0.00010120757 0.0512 AML other m 2019-09-27T20:43:41.67
IV.MOMA.HNE. ML:1.6 0.000128896165 0.1408 AML other m 2019-09-27T20:43:42.57
IV.MOMA.HHN. ML:1.6 0.000104449295 0.4224 AML other m 2019-09-27T20:43:42.31
IV.MOMA.HHE. ML:1.6 0.00011990796500000001 0.1792 AML other m 2019-09-27T20:43:42.56
IV.CESX.HHE. ML:1.4 0.000068701625 0.256 AML other m 2019-09-27T20:43:44.10
IV.SNTG.HHN. ML:1.3 0.000043494355 0.1408 AML other m 2019-09-27T20:43:44.60
IV.SNTG.HHE. ML:1.4 0.00005326633 0.1152 AML other m 2019-09-27T20:43:43.73
IV.GIGS.HHN. ML:0.8 0.000016454855 0.0896 AML other m 2019-09-27T20:43:44.63
IV.GIGS.HHE. ML:0.8 0.000015669005 0.0896 AML other m 2019-09-27T20:43:45.50
IV.MNTT.EHE. ML:2.1 0.0003830595 0.2176 AML other m 2019-09-27T20:43:45.78
IV.MNTT.EHN. ML:2.3 0.0005273752499999999 0.2944 AML other m 2019-09-27T20:43:45.60
IV.OFFI.HHE. ML:1.7 0.00013796717 0.256 AML other m 2019-09-27T20:43:45.95
IV.OFFI.HHN. ML:1.9 0.000200299 0.384 AML other m 2019-09-27T20:43:45.91
IV.EL6.EHN. ML:1.9 0.00016741325000000002 0.1792 AML other m 2019-09-27T20:43:45.74
IV.EL6.EHE. ML:1.8 0.00012785355 0.1408 AML other m 2019-09-27T20:43:45.99
IV.FIAM.HHE. ML:1.1 0.000026067264999999998 0.2176 AML other m 2019-09-27T20:43:46.23
IV.FIAM.HHN. ML:1.0 0.000022360316500000002 0.1792 AML other m 2019-09-27T20:43:46.55
IV.ATCC.EHN. ML:1.3 0.000046156745 0.2176 AML other m 2019-09-27T20:43:46.44
IV.ARVD.HHE. ML:1.2 0.000024296985 0.2304 AML other m 2019-09-27T20:43:51.78
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