Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 24-01-2021 and time 09:14:16 (Italy) in region 1 km E Norcia (PG)

A magnitude ML 1.6 earthquake occured in region: 1 km E Norcia (PG), on

  • 24-01-2021 08:14:16 (UTC)
  • 24-01-2021 09:14:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7930, 13.1050 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 1 4957 4957
Preci PG 11 724 5681
Cascia PG 11 3217 8898
Castelsantangelo sul Nera MC 12 281 9179
Visso MC 15 1107 10286
Cerreto di Spoleto PG 16 1075 11361
Arquata del Tronto AP 16 1178 12539
Accumoli RI 16 667 13206
Poggiodomo PG 17 117 13323
Ussita MC 17 444 13767
Sellano PG 18 1079 14846
Montegallo AP 20 523 15369
Vallo di Nera PG 20 364 15733
Monteleone di Spoleto PG 20 599 16332
Cittareale RI 20 482 16814

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
92 Km E of Viterbo (67173 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
98 Km SW of Ancona (100861 inhabitants)
98 Km W of Pescara (121014 inhabitants)
100 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 1.6 2021-01-24
08:14:16		 42.7933 13.105 10 2021-07-12
16:55:03		 Bollettino Sismico Italiano INGV 88460721
Reviewed
Rev100 		ML 1.6 2021-01-24
08:14:16		 42.7948 13.1128 10 2021-01-24
08:22:27		 Sala Sismica INGV-Roma 86522601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-24 08:14:16 ± 0.05
Latitude 42.7933 ± 0.0027
Longitude 13.1050 ± 0.0049
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 88460721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 385
Semi-minor axis of confidence ellipse (meter) 180
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41099
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 88460721
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-05 13:04:56

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 86522601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-24 08:22:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRTC.HHZ. 2021-01-24T08:14:37.06 3.0 undecidable manual P 0.31 0
IV.RMP.HHZ. 2021-01-24T08:14:35.92 3.0 positive manual P -1.61 0
IV.ASSB.HHZ. 2021-01-24T08:14:31.22 0.6 undecidable manual S 307 45.621 50 0.3 45
IV.TERO.HHZ. 2021-01-24T08:14:30.40 0.6 undecidable manual S 115 44.8218 50 -0.32 45
IV.SAP2.EHE. 2021-01-24T08:14:30.67 0.6 undecidable manual S 35 41.2254 50 0.91 37
IV.MF5.EHN. 2021-01-24T08:14:29.03 0.6 undecidable manual S 53 36.0417 50 0.67 41
IV.PF6.EHN. 2021-01-24T08:14:28.77 0.6 undecidable manual S 11 38.9277 50 -0.36 45
IV.CAMP.HHZ. 2021-01-24T08:14:28.77 0.3 undecidable manual S 139 37.8288 50 -0.08 72
IV.GUMA.HHZ. 2021-01-24T08:14:28.39 0.3 undecidable manual S 32 35.2425 50 0.24 70
IV.RM33.EHZ. 2021-01-24T08:14:27.48 0.6 undecidable manual S 164 32.745 50 -0.02 49
IV.CSP1.EHZ. 2021-01-24T08:14:27.67 0.6 undecidable manual S 14 34.0437 50 -0.17 48
IV.CESI.HHZ. 2021-01-24T08:14:26.44 0.6 undecidable manual S 325 28.5492 50 0.07 49
IV.SMA1.EHZ. 2021-01-24T08:14:25.94 0.3 undecidable manual S 134 26.0517 111 0.24 71
IV.FDMO.HHZ. 2021-01-24T08:14:25.52 0.6 undecidable manual S 357 27.0507 50 -0.44 46
IV.T1299.HNN. 2021-01-24T08:14:25.01 0.6 undecidable manual S 141 22.8549 113 0.35 47
IV.TERO.HHZ. 2021-01-24T08:14:24.15 0.3 undecidable manual P 115 44.8218 50 -0.36 67
IV.MMO1.EHZ. 2021-01-24T08:14:24.07 0.6 undecidable manual S 57 21.5673 115 -0.18 49
IV.GAVE.EHZ. 2021-01-24T08:14:24.07 0.6 undecidable manual S 237 20.5683 116 0.14 49
IV.SAP2.EHE. 2021-01-24T08:14:24.52 0.3 undecidable manual P 35 41.2254 50 0.56 64
IV.LNSS.HHZ. 2021-01-24T08:14:24.23 0.6 undecidable manual S 194 21.7671 114 -0.1 49
IT.MTCL.HGZ. 2021-01-24T08:14:24.56 0.6 undecidable manual S 339 23.8539 113 -0.42 46
IV.MTRA.EHZ. 2021-01-24T08:14:24.83 0.6 undecidable manual S 100 24.0537 112 -0.23 48
IV.ASSB.HHZ. 2021-01-24T08:14:24.42 0.3 undecidable manual P 307 45.621 50 -0.2 70
IV.CAMP.HHZ. 2021-01-24T08:14:23.17 0.1 undecidable manual P 139 37.8288 50 -0.26 93
IV.GUMA.HHZ. 2021-01-24T08:14:23.22 0.1 undecidable manual P 32 35.2425 50 0.19 95
IV.MF5.EHN. 2021-01-24T08:14:23.79 0.3 undecidable manual P 53 36.0417 50 0.64 63
IV.PF6.EHN. 2021-01-24T08:14:23.35 0.3 undecidable manual P 11 38.9277 50 -0.24 70
IV.ARRO.EHZ. 2021-01-24T08:14:23.53 0.3 undecidable manual P 229 36.4413 50 0.31 69
IV.FEMA.HNE. 2021-01-24T08:14:23.66 0.6 undecidable manual S 347 19.2696 117 0.12 49
IV.RM33.EHZ. 2021-01-24T08:14:22.30 0.1 undecidable manual P 164 32.745 50 -0.35 92
IV.CSP1.EHZ. 2021-01-24T08:14:22.67 0.1 undecidable manual P 14 34.0437 50 -0.18 95
IV.FDMO.HHZ. 2021-01-24T08:14:21.58 0.1 undecidable manual P 357 27.0507 50 -0.18 96
IT.MTCL.HGZ. 2021-01-24T08:14:21.03 0.3 undecidable manual P 339 23.8539 113 -0.17 73
IV.MTRA.EHZ. 2021-01-24T08:14:21.11 0.3 undecidable manual P 100 24.0537 112 -0.14 73
IV.CESI.HHZ. 2021-01-24T08:14:21.89 0.1 undecidable manual P 325 28.5492 50 -0.11 97
IV.SMA1.EHZ. 2021-01-24T08:14:21.41 0.1 undecidable manual P 134 26.0517 111 -0.2 96
IV.T1299.HNN. 2021-01-24T08:14:21.12 0.1 undecidable manual P 141 22.8549 113 0.11 98
IV.LNSS.HHZ. 2021-01-24T08:14:20.89 0.1 undecidable manual P 194 21.7671 114 0.07 99
IV.FEMA.HNE. 2021-01-24T08:14:20.41 0.3 undecidable manual P 347 19.2696 117 0.05 75
IV.MMO1.EHZ. 2021-01-24T08:14:20.68 0.1 undecidable manual P 57 21.5673 115 -0.09 99
IV.GAVE.EHZ. 2021-01-24T08:14:20.96 0.3 undecidable manual P 237 20.5683 116 0.37 70
IV.NRCA.HHZ. 2021-01-24T08:14:19.65 0.6 undecidable manual S 10 4.4955 155 -0.15 50
IV.NRCA.HHZ. 2021-01-24T08:14:18.39 0.1 undecidable manual P 10 4.4955 155 0.18 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:1.8 0.0004035 0.66 AML other m 2021-01-24T08:14:25.19
IV.LNSS.HNN. ML:1.8 0.000421 0.64 AML other m 2021-01-24T08:14:25.20
IV.MTRA.HNN. ML:1.8 0.0003885 0.6 AML other m 2021-01-24T08:14:25.63
IV.MTRA.EHN. ML:1.8 0.0003485 0.16 AML other m 2021-01-24T08:14:25.71
IV.MTRA.HNE. ML:1.8 0.0004355 0.16 AML other m 2021-01-24T08:14:25.64
IV.MTRA.EHE. ML:1.9 0.00045200000000000004 0.18 AML other m 2021-01-24T08:14:25.64
IV.LNSS.HHE. ML:1.7 0.00035299999999999996 1.06 AML other m 2021-01-24T08:14:26.16
IV.LNSS.HNE. ML:1.7 0.000359 0.28 AML other m 2021-01-24T08:14:26.17
IV.FDMO.HHN. ML:1.3 0.00011399999999999999 1.38 AML other m 2021-01-24T08:14:26.23
IV.CESI.HHE. ML:1.4 0.0001134 1.16 AML other m 2021-01-24T08:14:26.90
IV.RM33.EHN. ML:1.5 0.000152 0.88 AML other m 2021-01-24T08:14:27.88
IV.FDMO.HHE. ML:1.3 0.00011149999999999999 0.74 AML other m 2021-01-24T08:14:28.03
IV.CESI.HHN. ML:1.3 0.00011225 0.54 AML other m 2021-01-24T08:14:28.88
IV.GUMA.HHE. ML:1.7 0.0001825 1.14 AML other m 2021-01-24T08:14:28.07
IV.RM33.EHE. ML:1.5 0.0001325 0.2 AML other m 2021-01-24T08:14:28.86
IV.SMA1.EHE. ML:1.5 0.000193 0.34 AML other m 2021-01-24T08:14:29.09
IV.CSP1.EHE. ML:1.9 0.0003015 1.36 AML other m 2021-01-24T08:14:29.87
IV.GUMA.HHN. ML:1.7 0.0001975 0.42 AML other m 2021-01-24T08:14:29.53
IV.SMA1.EHN. ML:1.4 0.0001615 0.52 AML other m 2021-01-24T08:14:29.73
IV.CSP1.EHN. ML:1.8 0.000248 0.9 AML other m 2021-01-24T08:14:30.13
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