Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 02-02-2020 and time 21:17:26 (Italy) in region 4 km W Norcia (PG)

A magnitude ML 1.7 earthquake occured in region: 4 km W Norcia (PG), on

  • 02-02-2020 20:17:26 (UTC)
  • 02-02-2020 21:17:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7980, 13.0460 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 4 4957 4957
Preci PG 9 724 5681
Cascia PG 9 3217 8898
Cerreto di Spoleto PG 11 1075 9973
Poggiodomo PG 13 117 10090
Castelsantangelo sul Nera MC 14 281 10371
Sellano PG 14 1079 11450
Visso MC 15 1107 12557
Vallo di Nera PG 15 364 12921
Ussita MC 18 444 13365
Monteleone di Spoleto PG 18 599 13964
Sant'Anatolia di Narco PG 19 564 14528
Scheggino PG 20 461 14989

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km SE of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
56 Km W of Teramo (54892 inhabitants)
57 Km NW of L'Aquila (69753 inhabitants)
64 Km SE of Perugia (166134 inhabitants)
88 Km E of Viterbo (67173 inhabitants)
92 Km N of Guidonia Montecelio (88673 inhabitants)
95 Km N of Tivoli (56533 inhabitants)
96 Km W of Montesilvano (53738 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 1.7 2020-02-02
20:17:26		 42.7983 13.0462 9 2020-07-18
21:08:23		 Bollettino Sismico Italiano INGV 76986631
Reviewed
Rev100 		ML 1.7 2020-02-02
20:17:26		 42.797 13.0422 10 2020-02-02
20:26:24		 Sala Sismica INGV-Roma 76144271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-02 20:17:26 ± 0.05
Latitude 42.7983 ± 0.0027
Longitude 13.0462 ± 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 76986631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 386
Semi-minor axis of confidence ellipse (meter) 159
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 292
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) 50
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.60075
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 76986631
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-02 18:31:04

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 43
Type of magnitude ML
Reference to an origin 76144271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-02 20:26:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CPGN.EHZ. 2020-02-02T20:18:02.85 3.0 undecidable manual S -1.7 0
IV.MF5.EHZ. 2020-02-02T20:17:40.40 0.3 undecidable manual S 58 39.627 50 0.56 64
IV.CAMP.HHZ. 2020-02-02T20:17:39.80 0.6 undecidable manual S 134 41.5251 50 -0.54 43
IV.GUMA.HHZ. 2020-02-02T20:17:39.50 0.3 undecidable manual S 39 37.5291 50 0.22 70
IV.MURB.HHE. 2020-02-02T20:17:38.42 0.6 undecidable manual P 321 66.6777 50 0.11 45
IV.CSP1.EHZ. 2020-02-02T20:17:38.10 0.3 undecidable manual S 22 35.0427 50 -0.5 66
IV.ARRO.EHZ. 2020-02-02T20:17:37.70 0.3 undecidable manual S 223 33.3444 50 -0.46 67
IV.OFFI.HHZ. 2020-02-02T20:17:37.10 0.3 undecidable manual P 74 54.2013 50 0.71 59
IV.FIAM.HHZ. 2020-02-02T20:17:37.10 0.3 undecidable manual P 174 59.0964 50 -0.05 70
IV.MNTT.EHZ. 2020-02-02T20:17:36.90 0.6 undecidable manual P 57 53.4021 50 0.63 40
IV.GIGS.HHZ. 2020-02-02T20:17:36.53 0.3 undecidable manual P 132 57.5979 50 -0.38 65
IV.ATCC.EHZ. 2020-02-02T20:17:36.36 0.3 undecidable manual P 323 54.1014 50 -0.02 71
IV.MMO1.EHZ. 2020-02-02T20:17:35.30 0.3 undecidable manual S 64 25.4523 110 -0.47 68
IV.CESX.HHZ. 2020-02-02T20:17:35.02 0.1 undecidable manual P 241 42.9237 50 0.36 89
IV.SAP2.EHE. 2020-02-02T20:17:35.02 0.3 undecidable manual P 41 43.8228 50 0.24 69
IV.FDMO.HHZ. 2020-02-02T20:17:35.70 0.3 undecidable manual S 7 26.6511 109 -0.46 68
IV.SNTG.HHZ. 2020-02-02T20:17:35.78 0.6 undecidable manual P 350 51.4152 50 -0.18 46
IV.CESI.HHZ. 2020-02-02T20:17:35.60 0.3 undecidable manual S 333 25.6521 110 -0.24 71
IT.GNU.HGE. 2020-02-02T20:17:34.18 0.3 undecidable manual P 271 38.7279 50 0.17 70
IV.MF5.EHZ. 2020-02-02T20:17:34.33 0.1 undecidable manual P 58 39.627 50 0.18 94
IT.MTCL.HGZ. 2020-02-02T20:17:34.52 0.3 undecidable manual S 350 22.0668 113 -0.15 73
IV.LNSS.HHZ. 2020-02-02T20:17:34.40 0.3 undecidable manual S 181 21.6672 113 -0.16 73
IV.MOMA.HNZ. 2020-02-02T20:17:34.00 0.3 undecidable manual P 271 38.7279 50 -0.01 73
IV.FEMA.HNN. 2020-02-02T20:17:33.40 0.3 undecidable manual S 1 18.1707 117 -0.06 75
IV.GAVE.EHZ. 2020-02-02T20:17:33.20 0.3 undecidable manual S 227 17.0718 118 0.09 74
IV.CSP1.EHZ. 2020-02-02T20:17:33.23 0.3 undecidable manual P 22 35.0427 50 -0.21 70
IV.MC2.EHZ. 2020-02-02T20:17:33.40 0.3 undecidable manual S 43 17.0718 118 0.27 72
IV.CAMP.HHZ. 2020-02-02T20:17:33.96 0.1 undecidable manual P 134 41.5251 50 -0.48 87
IV.ARRO.EHZ. 2020-02-02T20:17:33.11 0.3 undecidable manual P 223 33.3444 50 -0.07 73
IV.MML1.HNE. 2020-02-02T20:17:33.30 0.3 undecidable manual P 350 35.5422 50 -0.21 70
IV.GUMA.HHZ. 2020-02-02T20:17:33.90 0.1 undecidable manual P 39 37.5291 50 0.07 96
IV.RM33.HNE. 2020-02-02T20:17:33.99 0.3 undecidable manual P 157 34.9428 50 0.57 64
IV.SMA1.EHZ. 2020-02-02T20:17:32.39 0.3 undecidable manual P 128 30.0477 50 -0.28 70
IV.MTRA.EHE. 2020-02-02T20:17:32.25 0.3 undecidable manual P 99 28.9488 108 -0.21 71
IV.MMO1.EHZ. 2020-02-02T20:17:31.61 0.3 undecidable manual P 64 25.4523 110 -0.19 72
IV.FDMO.HHZ. 2020-02-02T20:17:31.87 0.1 undecidable manual P 7 26.6511 109 -0.16 96
IV.LNSS.HHZ. 2020-02-02T20:17:31.11 0.1 undecidable manual P 181 21.6672 113 0.01 100
IV.T1299.HNN. 2020-02-02T20:17:31.90 0.3 undecidable manual P 133 26.4513 109 -0.1 73
IT.MTCL.HGZ. 2020-02-02T20:17:31.14 0.3 undecidable manual P 350 22.0668 113 -0.03 75
IV.CESI.HHZ. 2020-02-02T20:17:31.82 0.1 undecidable manual P 333 25.6521 110 -0.02 99
IV.MC2.EHZ. 2020-02-02T20:17:30.51 0.1 undecidable manual P 43 17.0718 118 0.23 96
IV.GAVE.EHZ. 2020-02-02T20:17:30.59 0.1 undecidable manual P 227 17.0718 118 0.32 94
IV.NRCA.HNZ. 2020-02-02T20:17:30.40 0.3 undecidable manual S 55 6.7932 144 0.04 76
IV.FEMA.HNN. 2020-02-02T20:17:30.69 0.1 undecidable manual P 1 18.1707 117 0.22 96
IV.NRCA.HNZ. 2020-02-02T20:17:28.96 0.1 undecidable manual P 55 6.7932 144 0.28 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:2.1 0.002205 0.64 AML other m 2020-02-02T20:17:30.58
IV.NRCA.HNE. ML:2.1 0.001955 1.1 AML other m 2020-02-02T20:17:31.43
IV.NRCA.HHE. ML:2.1 0.00217 1.1 AML other m 2020-02-02T20:17:31.98
IV.GAVE.HNN. ML:1.7 0.00046699999999999997 0.48 AML other m 2020-02-02T20:17:33.69
IV.GAVE.EHN. ML:2.2 0.0015499999999999997 0.16 AML other m 2020-02-02T20:17:33.69
IV.GAVE.HNE. ML:2.2 0.001365 0.14 AML other m 2020-02-02T20:17:33.72
IV.GAVE.EHE. ML:2.2 0.00138 0.16 AML other m 2020-02-02T20:17:33.73
IV.LNSS.HHE. ML:1.9 0.0006080000000000001 1.82 AML other m 2020-02-02T20:17:34.96
IV.LNSS.HNE. ML:1.9 0.00057056375 1.8336 AML other m 2020-02-02T20:17:34.96
IV.LNSS.HNN. ML:1.9 0.00050469255 0.1792 AML other m 2020-02-02T20:17:35.04
IV.LNSS.HHN. ML:1.9 0.000515 0.18 AML other m 2020-02-02T20:17:35.13
IV.CESI.HHN. ML:2.0 0.0006585 0.28 AML other m 2020-02-02T20:17:36.02
IV.CESI.HNN. ML:1.9 0.000488432 0.1536 AML other m 2020-02-02T20:17:36.03
IV.CESI.HNE. ML:1.6 0.0002079128 0.128 AML other m 2020-02-02T20:17:36.04
IV.CESI.HHE. ML:1.7 0.000309 0.38 AML other m 2020-02-02T20:17:36.23
IV.FDMO.HHE. ML:1.7 0.00028500000000000004 0.24 AML other m 2020-02-02T20:17:36.06
IV.FDMO.HHN. ML:1.6 0.00024249999999999999 0.84 AML other m 2020-02-02T20:17:36.19
IV.SMA1.EHN. ML:1.5 0.0001555 0.24 AML other m 2020-02-02T20:17:38.00
IV.ARRO.EHN. ML:1.2 0.00007374999999999999 0.16 AML other m 2020-02-02T20:17:38.32
IV.SMA1.EHE. ML:1.6 0.00020050000000000002 1.32 AML other m 2020-02-02T20:17:38.24
IV.CSP1.EHE. ML:1.5 0.00014230000000000002 0.8 AML other m 2020-02-02T20:17:39.28
IV.ARRO.EHE. ML:1.3 0.0000882 0.22 AML other m 2020-02-02T20:17:39.51
IV.CAMP.HHE. ML:1.0 0.00003125 0.92 AML other m 2020-02-02T20:17:40.48
IV.GUMA.HHN. ML:1.7 0.000174 0.8 AML other m 2020-02-02T20:17:40.96
IV.MF5.EHE. ML:1.6 0.0001275 0.2 AML other m 2020-02-02T20:17:41.00
IV.MF5.EHN. ML:1.6 0.00015 0.8 AML other m 2020-02-02T20:17:41.32
IV.GUMA.HHE. ML:1.6 0.0001655 1.04 AML other m 2020-02-02T20:17:42.04
IV.CSP1.EHN. ML:1.5 0.0001315 0.42 AML other m 2020-02-02T20:17:42.10
IV.CESX.HHE. ML:1.5 0.0001013 0.26 AML other m 2020-02-02T20:17:42.38
IV.CESX.HHN. ML:1.5 0.00011025 1.06 AML other m 2020-02-02T20:17:42.89
IV.CAMP.HHN. ML:0.9 0.0000262 1.58 AML other m 2020-02-02T20:17:42.13
IV.GUMA.HNE. ML:1.6 0.00016077344999999998 0.3328 AML other m 2020-02-02T20:17:43.28
IV.ATCC.EHN. ML:1.4 0.00006445000000000001 0.42 AML other m 2020-02-02T20:17:45.59
IV.MNTT.EHN. ML:1.9 0.00020050000000000002 0.3 AML other m 2020-02-02T20:17:45.98
IV.ATCC.EHE. ML:1.5 0.0000748 0.72 AML other m 2020-02-02T20:17:46.56
IV.GIGS.HHN. ML:0.7 0.000012468445 0.192 AML other m 2020-02-02T20:17:46.30
IV.GIGS.HHE. ML:0.7 0.000011364995 0.1024 AML other m 2020-02-02T20:17:46.61
IV.FIAM.HHE. ML:1.0 0.0000176 0.22 AML other m 2020-02-02T20:17:46.75
IV.OFFI.HHE. ML:1.4 0.000053668685 0.32 AML other m 2020-02-02T20:17:47.01
IV.FIAM.HHN. ML:0.8 0.00001585 1.34 AML other m 2020-02-02T20:17:48.69
IV.MNTT.EHE. ML:1.9 0.0001835 1.72 AML other m 2020-02-02T20:17:49.89
IV.OFFI.HHN. ML:1.5 0.00007978345000000001 0.6016 AML other m 2020-02-02T20:17:53.56
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