Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 28-02-2017 and time 22:21:41 (Italy) in region 4 km SE Norcia (PG)

A magnitude ML 2.1 earthquake occured in region: 4 km SE Norcia (PG), on

  • 28-02-2017 21:21:41 (UTC)
  • 28-02-2017 22:21:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7740, 13.1380 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 4 4957 4957
Cascia PG 12 3217 8174
Accumoli RI 13 667 8841
Arquata del Tronto AP 13 1178 10019
Castelsantangelo sul Nera MC 14 281 10300
Preci PG 14 724 11024
Cittareale RI 17 482 11506
Poggiodomo PG 18 117 11623
Montegallo AP 18 523 12146
Visso MC 18 1107 13253
Cerreto di Spoleto PG 19 1075 14328
Ussita MC 19 444 14772

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km SE of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
71 Km SE of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
95 Km W of Pescara (121014 inhabitants)
97 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 2.1 2017-02-28
21:21:41		 42.7737 13.1377 10 2019-07-19
13:20:51		 Bollettino Sismico Italiano INGV 61837071
Reviewed
Rev100 		ML 2.0 2017-02-28
21:21:41		 42.7728 13.1402 10 2017-02-28
21:27:27		 Sala Sismica INGV-Roma 41773391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-02-28 21:21:41 ± 0.03
Latitude 42.7737 ± 0.0018
Longitude 13.1377 ± 0.0025
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 61837071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 237
Semi-minor axis of confidence ellipse (meter) 185
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 29
Number of associated phases, regardless of their use for origin computation 68
Number of defining phases 68
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.73744
Number of stations at which the event was observed 40
Number of stations from which data was used for origin computation 40
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 83
Type of magnitude ML
Reference to an origin 61837071
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-10-11 09:43:53

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 19
Type of magnitude ML
Reference to an origin 41773391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-02-28 21:27:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T0110.HHZ. 2017-02-28T21:21:55.64 0.3 undecidable manual P 139 79.8645 50 -0.1 64
IV.TERO.HHZ. 2017-02-28T21:21:55.36 0.6 undecidable manual S 114 41.5251 50 -0.28 44
IV.ARVD.HHZ. 2017-02-28T21:21:55.96 0.3 undecidable manual P 349 81.8514 50 -0.1 64
IV.ARRO.EHZ. 2017-02-28T21:21:54.98 0.6 undecidable manual S 235 37.2294 50 0.49 43
IV.CSP1.EHZ. 2017-02-28T21:21:54.22 0.6 undecidable manual S 9 35.742 50 0.13 46
IV.FAGN.HHZ. 2017-02-28T21:21:54.88 0.3 undecidable manual P 147 67.1772 50 1.1 47
IV.GUMA.HHZ. 2017-02-28T21:21:54.79 0.6 undecidable manual S 27 35.8419 50 0.67 40
IV.T1246.HHN. 2017-02-28T21:21:54.00 0.6 undecidable manual S 126 35.8419 50 -0.13 46
IV.CESI.HHZ. 2017-02-28T21:21:53.11 0.3 undecidable manual S 324 31.8459 50 0.05 71
IV.CING.HHZ. 2017-02-28T21:21:53.76 0.3 undecidable manual P 4 66.8775 50 0.01 67
IV.T1211.EHZ. 2017-02-28T21:21:53.97 0.3 undecidable manual S 221 35.2425 50 0 71
IV.CAMP.HHE. 2017-02-28T21:21:53.57 0.6 undecidable manual S 140 34.4433 50 -0.18 46
IV.FIAM.HHZ. 2017-02-28T21:21:52.03 0.3 undecidable manual P 182 56.0994 50 -0.05 68
IV.ATCC.EHZ. 2017-02-28T21:21:52.85 0.3 undecidable manual P 319 60.8946 50 0.03 68
IV.FDMO.HHZ. 2017-02-28T21:21:52.25 0.6 undecidable manual S 352 29.4483 50 -0.16 47
IV.RM33.EHZ. 2017-02-28T21:21:52.33 0.3 undecidable manual S 168 30.0477 50 -0.24 69
IV.SNTG.HHZ. 2017-02-28T21:21:52.14 0.3 undecidable manual P 343 55.6998 50 0.12 67
IV.T1241.EHZ. 2017-02-28T21:21:51.16 0.3 undecidable manual S 69 25.5522 50 -0.23 69
IV.OFFI.HHZ. 2017-02-28T21:21:51.67 0.3 undecidable manual P 68 48.0186 50 0.83 55
IV.T1221.HNE. 2017-02-28T21:21:51.13 0.6 undecidable manual S 292 25.5522 50 -0.23 46
IV.GIGS.HHZ. 2017-02-28T21:21:50.79 0.3 undecidable manual P 135 50.3163 50 -0.39 64
IV.SMA1.EHZ. 2017-02-28T21:21:50.39 0.6 undecidable manual S 135 22.6551 114 -0.13 47
IV.MOMA.HHZ. 2017-02-28T21:21:50.70 0.3 undecidable manual P 274 46.3203 50 0.13 68
IV.T1215.EHZ. 2017-02-28T21:21:50.13 0.6 undecidable manual S 278 22.1556 115 -0.23 46
IV.T1204.EHZ. 2017-02-28T21:21:49.19 0.6 undecidable manual S 127 18.1707 119 0.04 49
IV.GUMA.HHZ. 2017-02-28T21:21:49.23 0.1 positive manual P 27 35.8419 50 0.27 90
IV.T1217.EHZ. 2017-02-28T21:21:49.12 0.6 undecidable manual S 248 18.1707 119 -0.02 49
IV.LNSS.HHZ. 2017-02-28T21:21:49.97 0.6 undecidable manual S 203 20.5683 116 0.1 48
IV.TERO.HHZ. 2017-02-28T21:21:49.51 0.1 undecidable manual P 114 41.5251 50 -0.33 88
IV.ARRO.EHZ. 2017-02-28T21:21:49.10 0.1 undecidable manual P 235 37.2294 50 -0.07 94
IV.MMO1.EHZ. 2017-02-28T21:21:49.63 0.6 undecidable manual S -0.19 48
IV.T1299.HNN. 2017-02-28T21:21:49.77 0.6 undecidable manual S 143 19.4694 118 0.24 47
IV.T1247.HHZ. 2017-02-28T21:21:49.63 0.3 undecidable manual P 160 39.1275 50 0.17 68
IV.T1222.EHZ. 2017-02-28T21:21:49.69 0.3 undecidable manual P 191 42.1245 50 -0.24 67
IV.T1211.EHZ. 2017-02-28T21:21:48.76 0.1 undecidable manual P 221 35.2425 50 -0.11 93
IV.MC2.EHZ. 2017-02-28T21:21:48.53 0.6 undecidable manual S 15 15.873 123 0.08 48
IV.CAMP.HHE. 2017-02-28T21:21:48.60 0.3 undecidable manual P 140 34.4433 50 -0.14 69
IV.T1246.HHN. 2017-02-28T21:21:48.74 0.1 undecidable manual P 126 35.8419 50 -0.22 91
IV.T1201.HNN. 2017-02-28T21:21:48.93 0.6 undecidable manual S 144 15.873 123 0.47 45
IV.CESI.HHZ. 2017-02-28T21:21:48.36 0.3 undecidable manual P 324 31.8459 50 0.01 72
IV.CSP1.EHZ. 2017-02-28T21:21:48.75 0.3 undecidable manual P 9 35.742 50 -0.19 69
IV.T1216.EHZ. 2017-02-28T21:21:48.39 0.6 undecidable manual S 323 16.1727 122 -0.15 48
IV.FDMO.HHZ. 2017-02-28T21:21:47.84 0.1 undecidable manual P 352 29.4483 50 -0.13 94
IV.RM33.EHZ. 2017-02-28T21:21:47.97 0.3 undecidable manual P 168 30.0477 50 -0.09 71
IV.T1221.HNE. 2017-02-28T21:21:47.37 0.1 undecidable manual P 292 25.5522 50 0 97
IV.T1244.EHZ. 2017-02-28T21:21:47.94 0.6 undecidable manual S 98 13.1757 128 0.24 47
IV.T1218.HNZ. 2017-02-28T21:21:47.27 0.6 undecidable manual S 189 11.6772 131 -0.01 49
IV.T1241.EHZ. 2017-02-28T21:21:47.28 0.1 undecidable manual P 69 25.5522 50 -0.1 95
IV.MMO1.EHZ. 2017-02-28T21:21:46.43 0.1 positive manual P -0.05 98
IV.T1299.HNN. 2017-02-28T21:21:46.50 0.1 undecidable manual P 143 19.4694 118 0.19 94
IV.T1212.HNE. 2017-02-28T21:21:46.29 0.6 undecidable manual S 252 7.9809 142 -0.11 49
IV.T1215.EHZ. 2017-02-28T21:21:46.77 0.1 positive manual P 278 22.1556 115 -0.02 97
IV.SMA1.EHZ. 2017-02-28T21:21:46.76 0.1 undecidable manual P 135 22.6551 114 -0.12 95
IV.T1204.EHZ. 2017-02-28T21:21:46.22 0.1 undecidable manual P 127 18.1707 119 0.13 95
IV.LNSS.HHZ. 2017-02-28T21:21:46.52 0.1 undecidable manual P 203 20.5683 116 0.02 97
IV.T1201.HNN. 2017-02-28T21:21:46.01 0.1 undecidable manual P 144 15.873 123 0.32 92
IV.T1217.EHZ. 2017-02-28T21:21:46.18 0.1 undecidable manual P 248 18.1707 119 0.1 96
IV.T1244.EHZ. 2017-02-28T21:21:45.43 0.1 undecidable manual P 98 13.1757 128 0.18 95
IV.T1218.HNZ. 2017-02-28T21:21:45.15 0.1 undecidable manual P 189 11.6772 131 0.14 96
IV.T1214.EHZ. 2017-02-28T21:21:45.61 0.1 undecidable manual S 105 5.994 150 -0.41 92
IV.T1216.EHZ. 2017-02-28T21:21:45.89 0.1 undecidable manual P 323 16.1727 122 0.15 95
IV.T1213.HNE. 2017-02-28T21:21:45.41 0.6 undecidable manual S 190 5.4945 152 -0.53 45
IV.NRCA.HNZ. 2017-02-28T21:21:45.67 0.6 undecidable manual S 344 6.8931 146 -0.51 45
IV.MC2.EHZ. 2017-02-28T21:21:45.91 0.3 undecidable manual P 15 15.873 123 0.22 71
IV.T1212.HNE. 2017-02-28T21:21:44.66 0.1 undecidable manual P 252 7.9809 142 0.15 97
IV.T1214.EHZ. 2017-02-28T21:21:44.32 0.1 undecidable manual P 105 5.994 150 0.04 99
IV.T1213.HNE. 2017-02-28T21:21:44.24 0.1 undecidable manual P 190 5.4945 152 0.01 100
IV.NRCA.HNZ. 2017-02-28T21:21:44.39 0.1 negative manual P 344 6.8931 146 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1212.HNN. ML:2.5 0.004105 0.16 AML other m 2017-02-28T21:21:46.37
IV.T1212.EHN. ML:2.5 0.004125 0.16 AML other m 2017-02-28T21:21:46.37
IV.T1212.HNE. ML:2.3 0.0027400000000000002 0.94 AML other m 2017-02-28T21:21:46.37
IV.T1212.EHE. ML:2.3 0.002615 0.64 AML other m 2017-02-28T21:21:47.37
IV.T1299.HNE. ML:1.9 0.0006465 0.52 AML other m 2017-02-28T21:21:50.16
IV.T1299.EHE. ML:1.9 0.0006705000000000001 0.52 AML other m 2017-02-28T21:21:50.42
IV.LNSS.HHN. ML:2.7 0.0033 0.24 AML other m 2017-02-28T21:21:50.12
IV.LNSS.HHE. ML:2.8 0.004175 0.48 AML other m 2017-02-28T21:21:50.41
IV.T1299.HNN. ML:1.8 0.0005105 0.54 AML other m 2017-02-28T21:21:52.37
IV.T1299.EHN. ML:1.9 0.000561 0.54 AML other m 2017-02-28T21:21:52.37
IV.T1214.HNE. ML:2.8 0.01078444 0.128 AML other m 2017-02-28T21:21:45.71
IV.T1214.EHN. ML:2.9 0.01241449 0.128 AML other m 2017-02-28T21:21:45.74
IV.T1214.HNN. ML:2.9 0.012731770000000002 0.1024 AML other m 2017-02-28T21:21:45.73
IV.T1214.EHE. ML:2.8 0.009960123 0.128 AML other m 2017-02-28T21:21:45.71
IV.NRCA.HHN. ML:2.9 0.011317869999999999 0.128 AML other m 2017-02-28T21:21:45.74
IV.NRCA.HNE. ML:2.9 0.011835741500000002 0.0768 AML other m 2017-02-28T21:21:45.75
IV.NRCA.HHE. ML:2.9 0.012472995 0.0768 AML other m 2017-02-28T21:21:45.74
IV.NRCA.HNN. ML:2.8 0.010573641 0.1152 AML other m 2017-02-28T21:21:45.75
IV.T1218.HNE. ML:2.5 0.0035883155 0.128 AML other m 2017-02-28T21:21:47.49
IV.T1218.EHE. ML:2.5 0.0033772669999999998 0.128 AML other m 2017-02-28T21:21:47.49
IV.T1218.EHN. ML:2.8 0.006938586 0.2176 AML other m 2017-02-28T21:21:47.61
IV.T1218.HNN. ML:2.8 0.007037303 0.2176 AML other m 2017-02-28T21:21:47.61
IV.T1216.EHN. ML:2.1 0.0010987215 0.3584 AML other m 2017-02-28T21:21:52.38
IV.T1216.EHE. ML:2.2 0.0015722499999999999 0.5504 AML other m 2017-02-28T21:21:51.40
IV.T1217.EHE. ML:1.9 0.00059988285 0.1536 AML other m 2017-02-28T21:21:51.19
IV.T1217.EHN. ML:1.9 0.00063628145 0.256 AML other m 2017-02-28T21:21:52.12
IV.T1217.HNN. ML:1.9 0.0006560753 0.1024 AML other m 2017-02-28T21:21:49.88
IV.T1217.HNE. ML:1.9 0.000703248 0.1536 AML other m 2017-02-28T21:21:51.19
IV.SMA1.EHN. ML:2.1 0.0007527842 0.192 AML other m 2017-02-28T21:21:53.53
IV.SMA1.EHE. ML:2.1 0.0008553177000000001 0.2432 AML other m 2017-02-28T21:21:51.80
IV.T1215.HNN. ML:1.6 0.00029833189999999997 0.128 AML other m 2017-02-28T21:21:50.68
IV.T1215.HNE. ML:1.7 0.00031187755 0.192 AML other m 2017-02-28T21:21:50.31
IV.T1215.EHN. ML:1.6 0.0002964933 0.128 AML other m 2017-02-28T21:21:50.68
IV.T1215.EHE. ML:1.6 0.00028485615 0.192 AML other m 2017-02-28T21:21:50.21
IV.T1241.HNE. ML:2.3 0.0011560025000000001 0.2176 AML other m 2017-02-28T21:21:51.43
IV.T1241.HNN. ML:2.1 0.0006760982500000001 0.3072 AML other m 2017-02-28T21:21:53.43
IV.T1241.EHN. ML:2.0 0.0006449944000000001 0.2816 AML other m 2017-02-28T21:21:52.59
IV.T1241.EHE. ML:2.3 0.0011751580000000001 0.2176 AML other m 2017-02-28T21:21:51.44
IV.T1256.HNE. ML:2.1 0.0007642217 0.2688 AML other m 2017-02-28T21:21:52.22
IV.T1256.HNN. ML:2.1 0.0007696905 0.2816 AML other m 2017-02-28T21:21:51.99
IV.FDMO.HHE. ML:1.7 0.00022906899999999998 0.192 AML other m 2017-02-28T21:21:54.57
IV.FDMO.HHN. ML:1.6 0.00019189225 0.256 AML other m 2017-02-28T21:21:52.39
IV.RM33.HNE. ML:2.0 0.00045421065000000004 0.2816 AML other m 2017-02-28T21:21:53.10
IV.RM33.HNN. ML:1.9 0.0003880861 0.2304 AML other m 2017-02-28T21:21:55.08
IV.RM33.EHE. ML:2.0 0.00042704345 0.2816 AML other m 2017-02-28T21:21:53.11
IV.RM33.EHN. ML:1.9 0.00037878580000000003 0.2304 AML other m 2017-02-28T21:21:54.96
IV.CESI.HHE. ML:1.8 0.0002534618 0.3328 AML other m 2017-02-28T21:21:55.21
IV.CESI.HHN. ML:1.9 0.00037876435 0.32 AML other m 2017-02-28T21:21:53.80
IV.CSP1.EHE. ML:2.0 0.00042697945000000006 0.3712 AML other m 2017-02-28T21:21:56.10
IV.CSP1.EHN. ML:2.1 0.00049810115 0.2816 AML other m 2017-02-28T21:21:54.59
IV.T1211.HNN. ML:2.4 0.0011242779999999998 0.2176 AML other m 2017-02-28T21:21:54.73
IV.T1211.EHN. ML:2.4 0.0011026885 0.2176 AML other m 2017-02-28T21:21:54.62
IV.T1211.HNE. ML:2.2 0.0007421621499999999 0.1536 AML other m 2017-02-28T21:21:54.63
IV.T1211.EHE. ML:2.3 0.00075149875 0.1408 AML other m 2017-02-28T21:21:54.63
IV.GUMA.HNN. ML:2.4 0.00100490395 0.4224 AML other m 2017-02-28T21:21:57.76
IV.GUMA.HHN. ML:2.3 0.00088269685 0.4352 AML other m 2017-02-28T21:21:56.33
IV.GUMA.HHE. ML:2.5 0.001237001 0.3328 AML other m 2017-02-28T21:21:57.72
IV.GUMA.HNE. ML:2.4 0.00105817115 0.5888 AML other m 2017-02-28T21:21:55.68
IV.TERO.HNE. ML:1.9 0.00024560625 0.2432 AML other m 2017-02-28T21:21:58.49
IV.TERO.HHN. ML:2.0 0.00033651855 0.0768 AML other m 2017-02-28T21:21:55.78
IV.TERO.HNN. ML:2.0 0.00028865085 0.0768 AML other m 2017-02-28T21:21:55.78
IV.TERO.HHE. ML:1.9 0.00025679595 0.128 AML other m 2017-02-28T21:21:56.83
IV.MOMA.HHN. ML:2.0 0.0003154523 0.1536 AML other m 2017-02-28T21:22:00.10
IV.MOMA.HHE. ML:2.0 0.0003136606 0.1792 AML other m 2017-02-28T21:21:59.42
IV.GIGS.HHE. ML:1.6 0.00010840725000000001 0.1536 AML other m 2017-02-28T21:21:57.89
IV.GIGS.HHN. ML:1.3 0.00005210605 0.1792 AML other m 2017-02-28T21:21:58.46
IV.ASSB.HHE. ML:1.8 0.000156167 0.2688 AML other m 2017-02-28T21:22:00.98
IV.ASSB.HHN. ML:1.7 0.00013987074999999999 0.1664 AML other m 2017-02-28T21:22:01.24
IV.OFFI.HHN. ML:2.0 0.00030668329999999997 0.5376 AML other m 2017-02-28T21:22:05.31
IV.OFFI.HHE. ML:2.0 0.0002796091 0.64 AML other m 2017-02-28T21:22:08.15
IV.FIAM.HHE. ML:1.8 0.00013868805 0.6272 AML other m 2017-02-28T21:22:08.95
IV.FIAM.HHN. ML:1.6 0.00007968601 0.256 AML other m 2017-02-28T21:22:02.44
IV.SNTG.HNE. ML:1.7 0.0001186395 0.704 AML other m 2017-02-28T21:22:05.28
IV.ATCC.EHN. ML:1.8 0.00011563390500000001 0.4992 AML other m 2017-02-28T21:22:06.55
IV.ATCC.EHE. ML:1.8 0.00012930639999999999 0.3456 AML other m 2017-02-28T21:22:05.13
IV.CING.HHN. ML:1.5 0.00005776186 0.2944 AML other m 2017-02-28T21:22:06.80
IV.CING.HHE. ML:1.7 0.000085292125 0.2816 AML other m 2017-02-28T21:22:07.20
IV.FAGN.HHE. ML:2.1 0.0002141383 0.2944 AML other m 2017-02-28T21:22:06.25
IV.FAGN.HHN. ML:2.0 0.0001677979 0.3968 AML other m 2017-02-28T21:22:09.24
IV.T0110.HHN. ML:2.0 0.0001399416 0.2944 AML other m 2017-02-28T21:22:08.84
IV.T0110.HHE. ML:2.0 0.00015301815000000001 0.4096 AML other m 2017-02-28T21:22:08.58
IV.ARVD.HHE. ML:1.5 0.000038159425 0.4992 AML other m 2017-02-28T21:22:14.56
IV.ARVD.HHN. ML:1.4 0.000028076326999999998 0.384 AML other m 2017-02-28T21:22:16.86
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
Waveforms Seismic signals in miniseed + resp format Download