Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 28-02-2018 and time 20:09:07 (Italy) in region 7 km SE Norcia (PG)

A magnitude ML 2.1 earthquake occured in region: 7 km SE Norcia (PG), on

  • 28-02-2018 19:09:07 (UTC)
  • 28-02-2018 20:09:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7380, 13.1370 at 12 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 7 4957 4957
Cascia PG 10 3217 8174
Accumoli RI 10 667 8841
Cittareale RI 14 482 9323
Arquata del Tronto AP 14 1178 10501
Poggiodomo PG 17 117 10618
Amatrice RI 17 2657 13275
Castelsantangelo sul Nera MC 18 281 13556
Preci PG 18 724 14280
Monteleone di Spoleto PG 18 599 14879
Montegallo AP 20 523 15402

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km SE of Foligno (57155 inhabitants)
45 Km E of Terni (111501 inhabitants)
47 Km W of Teramo (54892 inhabitants)
48 Km NW of L'Aquila (69753 inhabitants)
73 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
89 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Tivoli (56533 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
93 Km W of Pescara (121014 inhabitants)
95 Km W 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
Reviewed
Rev100 		ML 2.1 2018-02-28
19:09:07		 42.7383 13.1368 12 2018-02-28
19:26:42		 Sala Sismica INGV-Roma 54228811
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-02-28 19:09:07 ± 0.04
Latitude 42.7383 ± 0.0018
Longitude 13.1368 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 54228811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 270
Semi-minor axis of confidence ellipse (meter) 9
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 94
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.53600
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 18
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 70
Type of magnitude ML
Reference to an origin 54228811
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-02-28 19:26:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRSN.HNZ. 2018-02-28T19:09:35.97 3.0 negative manual Pn 0.1 0
IV.INTR.HHZ. 2018-02-28T19:09:24.35 3.0 positive manual P -0.37 0
IV.CERT.HHZ. 2018-02-28T19:09:23.53 3.0 positive manual P 0.57 0
IV.FRON.EHZ. 2018-02-28T19:09:23.25 3.0 negative manual P -0.39 0
IV.PF6.EHZ. 2018-02-28T19:09:22.12 0.3 undecidable manual S 6 44.5221 92 0.16 69
IV.T0110.HHZ. 2018-02-28T19:09:20.66 3.0 positive manual P -0.37 0
IV.CING.HHZ. 2018-02-28T19:09:20.31 3.0 undecidable manual P 0.17 0
IV.ARRO.EHZ. 2018-02-28T19:09:19.35 0.6 undecidable manual S 240 35.0427 93 -0.07 48
IV.CESI.HHZ. 2018-02-28T19:09:19.37 0.3 undecidable manual S 328 35.0427 93 -0.06 72
IV.T1247.HHZ. 2018-02-28T19:09:19.76 0.3 undecidable manual S 158 35.4423 93 0.23 69
IV.VCEL.EHZ. 2018-02-28T19:09:19.85 3.0 negative manual P 0.13 0
IV.FAGN.HHZ. 2018-02-28T19:09:18.60 3.0 negative manual P -0.27 0
IV.CAMP.HHZ. 2018-02-28T19:09:18.38 0.3 undecidable manual S 135 31.5462 93 -0.12 71
IV.SNTG.HHZ. 2018-02-28T19:09:18.20 0.1 undecidable manual P 345 59.496 91 0.01 92
IV.OFFI.HHZ. 2018-02-28T19:09:17.51 3.0 positive manual P 0.9 0
IV.RM33.EHZ. 2018-02-28T19:09:16.99 0.3 undecidable manual S 166 26.2515 95 -0.08 72
IV.FIAM.HHZ. 2018-02-28T19:09:16.82 3.0 positive manual P -0.15 0
IV.CESX.HHZ. 2018-02-28T19:09:16.88 3.0 positive manual P 0.6 0
IV.MOMA.HHZ. 2018-02-28T19:09:16.22 3.0 positive manual P -0.02 0
IV.MMO1.EHZ. 2018-02-28T19:09:16.39 0.3 undecidable manual S 41 23.6541 96 0.01 73
IV.ASSB.HHZ. 2018-02-28T19:09:16.83 3.0 positive manual P -0.19 0
IV.SMA1.EHZ. 2018-02-28T19:09:15.52 0.3 undecidable manual S 126 20.1687 98 0.08 73
OB.GAVE.EHZ. 2018-02-28T19:09:15.54 0.3 undecidable manual S 256 20.4684 98 0.01 74
IV.MF5.EHZ. 2018-02-28T19:09:15.37 0.1 undecidable manual P 43 38.1285 92 0.47 87
IV.PF6.EHZ. 2018-02-28T19:09:15.66 0.1 positive manual P 6 44.5221 92 -0.23 91
IV.MTRA.HNZ. 2018-02-28T19:09:15.47 0.3 undecidable manual S 84 21.2676 97 -0.28 70
IV.GIGS.HHZ. 2018-02-28T19:09:15.99 3.0 negative manual P -0.23 0
IV.GUMA.HHZ. 2018-02-28T19:09:15.41 0.3 undecidable manual P 24 39.4272 92 0.31 67
IV.T1247.HHZ. 2018-02-28T19:09:14.37 0.1 positive manual P 158 35.4423 93 -0.12 94
IV.ARRO.EHZ. 2018-02-28T19:09:14.53 0.6 positive manual P 240 35.0427 93 0.1 47
IV.LNSS.HHZ. 2018-02-28T19:09:14.70 0.3 undecidable manual S 208 16.9719 103 0.08 74
IV.TERO.HHZ. 2018-02-28T19:09:14.89 3.0 positive manual P -0.14 0
IV.CESI.HHZ. 2018-02-28T19:09:14.30 0.1 positive manual P 328 35.0427 93 -0.13 94
IV.CAMP.HHZ. 2018-02-28T19:09:13.71 0.1 positive manual P 135 31.5462 93 -0.18 94
IV.T1214.EHZ. 2018-02-28T19:09:12.35 0.3 undecidable manual S 68 6.2937 144 0.11 75
IV.MTRA.HNZ. 2018-02-28T19:09:12.16 0.1 undecidable manual P 84 21.2676 97 -0.15 96
IV.NRCA.HNZ. 2018-02-28T19:09:12.87 0.3 undecidable manual S 350 10.6782 124 -0.22 72
IV.SMA1.EHZ. 2018-02-28T19:09:12.19 0.1 undecidable manual P 126 20.1687 98 0.05 98
IV.RM33.EHZ. 2018-02-28T19:09:12.94 0.1 positive manual P 166 26.2515 95 -0.13 96
OB.GAVE.EHZ. 2018-02-28T19:09:12.22 0.1 positive manual P 256 20.4684 98 0.04 98
IV.MC2.EHZ. 2018-02-28T19:09:12.11 0.1 positive manual P 12 19.6692 99 0.05 98
IV.MMO1.EHZ. 2018-02-28T19:09:12.56 0.1 undecidable manual P 41 23.6541 96 -0.1 97
IV.T1299.EHZ. 2018-02-28T19:09:11.72 0.3 negative manual P 134 16.5723 104 0.13 73
IV.LNSS.HHZ. 2018-02-28T19:09:11.67 0.1 negative manual P 208 16.9719 103 0.02 99
IV.T1214.EHZ. 2018-02-28T19:09:10.42 0.1 undecidable manual P 68 6.2937 144 0.14 99
IV.NRCA.HNZ. 2018-02-28T19:09:10.74 0.1 positive manual P 350 10.6782 124 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1214.EHE. ML:2.3 0.0027350000000000005 0.94 AML other m 2018-02-28T19:09:12.11
IV.T1214.HNE. ML:2.3 0.0028650000000000004 0.96 AML other m 2018-02-28T19:09:12.10
IV.NRCA.HHE. ML:2.5 0.0037350000000000005 1.84 AML other m 2018-02-28T19:09:13.96
IV.NRCA.HNE. ML:2.5 0.0035549999999999996 1.84 AML other m 2018-02-28T19:09:13.97
IV.T1214.HNN. ML:2.3 0.00271 1.08 AML other m 2018-02-28T19:09:13.45
IV.T1214.EHN. ML:2.3 0.0025800000000000003 1.06 AML other m 2018-02-28T19:09:13.46
IV.NRCA.HHN. ML:2.3 0.00229 1.3 AML other m 2018-02-28T19:09:13.30
IV.NRCA.HNN. ML:2.3 0.00219 1.3 AML other m 2018-02-28T19:09:13.30
IV.T1299.EHN. ML:2.0 0.0009199999999999999 1.52 AML other m 2018-02-28T19:09:14.03
IV.T1299.HNN. ML:2.1 0.0009985 1.54 AML other m 2018-02-28T19:09:14.79
IV.LNSS.HHN. ML:2.4 0.0020099999999999996 1.66 AML other m 2018-02-28T19:09:15.03
IV.T1299.EHE. ML:2.0 0.0008959999999999999 1 AML other m 2018-02-28T19:09:15.13
IV.T1299.HNE. ML:2.0 0.0009145 0.98 AML other m 2018-02-28T19:09:15.14
IV.LNSS.HHE. ML:2.3 0.001785 0.86 AML other m 2018-02-28T19:09:15.09
OB.GAVE.HNN. ML:2.0 0.000779 0.28 AML other m 2018-02-28T19:09:15.77
OB.GAVE.EHN. ML:2.6 0.002745 0.3 AML other m 2018-02-28T19:09:15.77
IV.MTRA.HNE. ML:2.1 0.000843 0.84 AML other m 2018-02-28T19:09:15.82
IV.MTRA.EHE. ML:2.1 0.0008155 0.84 AML other m 2018-02-28T19:09:15.83
IV.MTRA.HNN. ML:2.0 0.000766 0.76 AML other m 2018-02-28T19:09:15.99
IV.MTRA.EHN. ML:2.0 0.0006815 1.78 AML other m 2018-02-28T19:09:15.99
IV.SMA1.EHE. ML:2.4 0.0018450000000000003 0.36 AML other m 2018-02-28T19:09:16.19
IV.SMA1.EHN. ML:2.4 0.001875 0.42 AML other m 2018-02-28T19:09:16.28
OB.GAVE.HNE. ML:2.4 0.0017999999999999997 0.24 AML other m 2018-02-28T19:09:17.46
OB.GAVE.EHE. ML:2.4 0.0017050000000000001 0.24 AML other m 2018-02-28T19:09:17.46
IV.RM33.HNN. ML:2.3 0.001108 0.24 AML other m 2018-02-28T19:09:17.52
IV.RM33.EHN. ML:2.3 0.0010934999999999999 0.26 AML other m 2018-02-28T19:09:17.52
IV.RM33.HNE. ML:2.3 0.0011330000000000001 1.58 AML other m 2018-02-28T19:09:18.98
IV.RM33.EHE. ML:2.3 0.0011245 1.58 AML other m 2018-02-28T19:09:18.99
IV.CAMP.HHN. ML:1.9 0.0003655 0.42 AML other m 2018-02-28T19:09:18.70
IV.CAMP.HHE. ML:1.8 0.00030300000000000005 1.04 AML other m 2018-02-28T19:09:19.55
IV.ARRO.EHE. ML:1.6 0.00016450000000000001 0.58 AML other m 2018-02-28T19:09:19.20
IV.CESI.HHN. ML:2.0 0.0004290000000000001 0.62 AML other m 2018-02-28T19:09:20.48
IV.CESI.HHE. ML:1.8 0.00027850000000000005 0.42 AML other m 2018-02-28T19:09:21.26
IV.TERO.HHE. ML:1.9 0.00028349999999999995 0.32 AML other m 2018-02-28T19:09:21.71
IV.ARRO.EHN. ML:1.7 0.00021250000000000002 1.42 AML other m 2018-02-28T19:09:21.86
IV.MF5.EHN. ML:1.8 0.0002175 0.82 AML other m 2018-02-28T19:09:21.46
IV.GUMA.HHE. ML:2.3 0.0007795 0.32 AML other m 2018-02-28T19:09:21.88
IV.GUMA.HHN. ML:2.3 0.0006594999999999999 1.46 AML other m 2018-02-28T19:09:22.84
IV.PF6.EHE. ML:1.8 0.00019600000000000002 0.22 AML other m 2018-02-28T19:09:22.39
IV.MF5.EHE. ML:1.8 0.00020400000000000003 1.16 AML other m 2018-02-28T19:09:22.19
IV.GIGS.HHE. ML:1.4 0.0000759 0.74 AML other m 2018-02-28T19:09:22.98
IV.GIGS.HHN. ML:1.6 0.00010455000000000001 0.36 AML other m 2018-02-28T19:09:23.65
IV.PF6.EHN. ML:1.5 0.00010015000000000001 0.3 AML other m 2018-02-28T19:09:23.76
IV.MOMA.HNE. ML:2.4 0.0006810000000000001 1.1 AML other m 2018-02-28T19:09:23.26
IV.TERO.HHN. ML:2.0 0.00034050000000000004 1.14 AML other m 2018-02-28T19:09:24.75
IV.FIAM.HHN. ML:1.8 0.00016749999999999998 0.64 AML other m 2018-02-28T19:09:24.59
IV.MOMA.HHE. ML:2.3 0.0006345000000000001 1.18 AML other m 2018-02-28T19:09:24.26
IV.MOMA.HNN. ML:2.2 0.000512 0.6 AML other m 2018-02-28T19:09:24.56
IV.ASSB.HHE. ML:2.2 0.0003835 0.3 AML other m 2018-02-28T19:09:24.98
IV.FIAM.HHE. ML:2.0 0.000219 0.76 AML other m 2018-02-28T19:09:25.35
IV.MOMA.HHN. ML:2.1 0.000327 0.6 AML other m 2018-02-28T19:09:25.46
IV.CESX.HHE. ML:1.7 0.00013800000000000002 0.64 AML other m 2018-02-28T19:09:25.57
IV.ASSB.HHN. ML:2.3 0.000481 0.2 AML other m 2018-02-28T19:09:25.89
IV.CESX.HHN. ML:1.6 0.000118 0.62 AML other m 2018-02-28T19:09:25.60
IV.OFFI.HHN. ML:2.4 0.0006995 1.46 AML other m 2018-02-28T19:09:27.04
IV.SNTG.HHE. ML:1.7 0.0000975 0.26 AML other m 2018-02-28T19:09:28.53
IV.OFFI.HHE. ML:2.1 0.00032900000000000003 0.92 AML other m 2018-02-28T19:09:28.64
IV.SNTG.HHN. ML:1.7 0.00010845 0.26 AML other m 2018-02-28T19:09:28.69
IV.CING.HHE. ML:1.8 0.00009795000000000001 0.2 AML other m 2018-02-28T19:09:31.58
IV.CING.HHN. ML:1.7 0.00008195 0.96 AML other m 2018-02-28T19:09:31.62
IV.VCEL.EHN. ML:2.2 0.0002725 1.02 AML other m 2018-02-28T19:09:31.26
IV.VCEL.EHE. ML:2.1 0.0001995 1.58 AML other m 2018-02-28T19:09:32.07
IV.FAGN.HHN. ML:2.2 0.000288 1.34 AML other m 2018-02-28T19:09:33.94
IV.T0110.HHN. ML:2.1 0.0001895 0.6 AML other m 2018-02-28T19:09:34.67
IV.T0110.HHE. ML:2.1 0.0001875 1.62 AML other m 2018-02-28T19:09:35.08
IV.FAGN.HHE. ML:2.2 0.000297 0.42 AML other m 2018-02-28T19:09:36.17
IV.FRON.EHN. ML:1.9 0.0000823 0.28 AML other m 2018-02-28T19:09:39.44
IV.CERT.HHE. ML:1.8 0.00007725 0.4 AML other m 2018-02-28T19:09:39.59
IV.CERT.HHN. ML:1.7 0.00006145 0.34 AML other m 2018-02-28T19:09:39.75
IV.FRON.EHE. ML:1.6 0.000047300000000000005 0.72 AML other m 2018-02-28T19:09:39.87
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