Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 29-05-2021 and time 19:30:57 (Italy) in region 7 km SE Norcia (PG)

A magnitude ML 1.4 earthquake occured in region: 7 km SE Norcia (PG), on

  • 29-05-2021 17:30:57 (UTC)
  • 29-05-2021 19:30:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7440, 13.1510 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 7 4957 4957
Accumoli RI 10 667 5624
Cascia PG 12 3217 8841
Arquata del Tronto AP 13 1178 10019
Cittareale RI 14 482 10501
Castelsantangelo sul Nera MC 17 281 10782
Amatrice RI 17 2657 13439
Preci PG 18 724 14163
Poggiodomo PG 18 117 14280
Montegallo AP 19 523 14803
Monteleone di Spoleto PG 19 599 15402

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km SE of Foligno (57155 inhabitants)
46 Km E of Terni (111501 inhabitants)
46 Km W of Teramo (54892 inhabitants)
48 Km NW of L'Aquila (69753 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km NE of Tivoli (56533 inhabitants)
92 Km W of Pescara (121014 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
94 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
Bulletin
Rev1000 		ML 1.4 2021-05-29
17:30:57		 42.7438 13.1507 9 2021-12-29
11:12:03		 Bollettino Sismico Italiano INGV 90752511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-29 17:30:57 ± 0.08
Latitude 42.7438 ± 0.0036
Longitude 13.1507 ± 0.0073
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90752511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 602
Semi-minor axis of confidence ellipse (meter) 259
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 255
Circular confidence region, given by single value of horizontal uncertainty (meter) 600.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.09353
Epicentral distance of station farthest from the epicenter (degree) 0.57826
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 90752511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-12 13:07:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2021-05-29T17:31:11.71 0.6 undecidable manual S 43 36.9297 50 1.13 33
IV.CSP1.EHN. 2021-05-29T17:31:11.21 0.6 undecidable manual S 6 38.8278 50 0.12 47
IV.TERO.HHZ. 2021-05-29T17:31:10.72 0.6 undecidable manual S 110 39.3273 50 -0.5 44
IV.ATCC.EHZ. 2021-05-29T17:31:09.37 0.3 undecidable manual P 320 64.1913 50 -0.04 69
IV.FDMO.HHZ. 2021-05-29T17:31:09.88 0.6 undecidable manual S 351 32.8449 50 0.38 45
IV.RM33.EHZ. 2021-05-29T17:31:07.66 0.6 undecidable manual S 169 26.5512 109 0 50
IV.MMO1.EHZ. 2021-05-29T17:31:06.36 0.6 undecidable manual S 40 22.4553 113 0.04 50
IV.TERO.HHZ. 2021-05-29T17:31:05.04 0.3 undecidable manual P 110 39.3273 50 -0.54 64
IV.MC2.EHZ. 2021-05-29T17:31:05.56 0.6 undecidable manual S 9 18.87 116 0.36 47
IV.LNSS.HHN. 2021-05-29T17:31:05.20 0.6 undecidable manual S 210 18.0708 117 0.26 48
IV.MF5.EHZ. 2021-05-29T17:31:05.42 0.3 undecidable manual P 43 36.9297 50 0.21 70
IV.MTRA.EHE. 2021-05-29T17:31:05.41 0.6 undecidable manual S 86 20.0688 115 -0.17 48
IV.CSP1.EHN. 2021-05-29T17:31:05.76 0.3 undecidable manual P 6 38.8278 50 0.25 69
IV.SMA1.EHZ. 2021-05-29T17:31:05.90 0.3 undecidable manual S 130 19.5693 116 0.47 68
IV.T1299.EHZ. 2021-05-29T17:31:04.75 0.6 undecidable manual S 139 16.1727 120 0.37 47
IV.FDMO.HHZ. 2021-05-29T17:31:04.22 0.1 undecidable manual P 351 32.8449 50 -0.37 91
IV.RM33.EHZ. 2021-05-29T17:31:03.25 0.1 undecidable manual P 169 26.5512 109 -0.28 93
IV.SMA1.EHZ. 2021-05-29T17:31:02.14 0.1 undecidable manual P 130 19.5693 116 -0.1 98
IV.NRCA.HNZ. 2021-05-29T17:31:02.43 0.6 undecidable manual S 343 10.3785 132 -0.31 48
IV.MC2.EHZ. 2021-05-29T17:31:02.05 0.1 undecidable manual P 9 18.87 116 -0.06 99
IV.LNSS.HHN. 2021-05-29T17:31:02.15 0.1 undecidable manual P 210 18.0708 117 0.19 97
IV.MMO1.EHZ. 2021-05-29T17:31:02.42 0.3 undecidable manual P 40 22.4553 113 -0.34 70
IV.MTRA.EHE. 2021-05-29T17:31:02.17 0.1 undecidable manual P 86 20.0688 115 -0.16 97
IV.T1299.EHZ. 2021-05-29T17:31:01.77 0.1 undecidable manual P 139 16.1727 120 0.13 98
IV.NRCA.HNZ. 2021-05-29T17:31:00.60 0.1 undecidable manual P 343 10.3785 132 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.7 0.0006730000000000001 0.14 AML other m 2021-05-29T17:31:03.17
IV.NRCA.HNN. ML:1.6 0.0005355 0.14 AML other m 2021-05-29T17:31:03.24
IV.NRCA.HNE. ML:1.8 0.0009465 0.14 AML other m 2021-05-29T17:31:03.33
IV.NRCA.HHE. ML:1.9 0.000995 0.14 AML other m 2021-05-29T17:31:03.33
IV.SMA1.EHE. ML:1.6 0.00032900000000000003 0.46 AML other m 2021-05-29T17:31:07.72
IV.LNSS.HHE. ML:1.3 0.00017199999999999998 1.2 AML other m 2021-05-29T17:31:07.89
IV.LNSS.HHN. ML:1.3 0.000176 1.66 AML other m 2021-05-29T17:31:10.94
IV.FDMO.HHN. ML:1.0 0.00004465 1.24 AML other m 2021-05-29T17:31:10.28
IV.RM33.EHE. ML:1.2 0.0000843 0.26 AML other m 2021-05-29T17:31:11.55
IV.SMA1.EHN. ML:1.5 0.00024349999999999998 1.12 AML other m 2021-05-29T17:31:11.62
IV.RM33.EHN. ML:1.2 0.000088 0.2 AML other m 2021-05-29T17:31:11.56
IV.FDMO.HHE. ML:1.1 0.00005095 1.14 AML other m 2021-05-29T17:31:11.68
IV.TERO.HHE. ML:2.2 0.0005455 1.2 AML other m 2021-05-29T17:31:14.78
IV.CSP1.EHN. ML:1.6 0.0001495 1.38 AML other m 2021-05-29T17:31:14.91
IV.TERO.HHN. ML:1.1 0.000045350000000000005 0.74 AML other m 2021-05-29T17:31:15.53
IV.CSP1.EHE. ML:1.4 0.00009185 0.34 AML other m 2021-05-29T17:31:18.11
IV.ATCC.EHE. ML:1.1 0.000024050000000000002 0.5 AML other m 2021-05-29T17:31:20.49
IV.ATCC.EHN. ML:1.2 0.000028049999999999997 0.64 AML other m 2021-05-29T17:31:22.89
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