Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 18-03-2022 and time 19:41:10 (Italy) in region 3 km SE Norcia (PG)

A magnitude ML 0.8 earthquake occured in region: 3 km SE Norcia (PG), on

  • 18-03-2022 18:41:10 (UTC)
  • 18-03-2022 19:41:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7660, 13.1070 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 3 4957 4957
Cascia PG 9 3217 8174
Preci PG 14 724 8898
Accumoli RI 14 667 9565
Castelsantangelo sul Nera MC 15 281 9846
Poggiodomo PG 15 117 9963
Arquata del Tronto AP 16 1178 11141
Cerreto di Spoleto PG 17 1075 12216
Cittareale RI 17 482 12698
Monteleone di Spoleto PG 18 599 13297
Visso MC 19 1107 14404
Vallo di Nera PG 20 364 14768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SE of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
91 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km N of Tivoli (56533 inhabitants)
97 Km W of Pescara (121014 inhabitants)
98 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 0.8 2022-03-18
18:41:10		 42.766 13.1068 10 2022-07-08
12:33:58		 Bollettino Sismico Italiano INGV 104876141
Reviewed
Rev100 		ML 0.9 2022-03-18
18:41:10		 42.7705 13.1115 8 2022-03-18
19:53:30		 Sala Sismica INGV-Roma 102124131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-03-18 18:41:10 ± 0.08
Latitude 42.7660 ± 0.0036
Longitude 13.1068 ± 0.0074
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 104876141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 579
Semi-minor axis of confidence ellipse (meter) 377
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 112
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 131
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39210
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 104876141
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-05-19 16:27:42

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 102124131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-03-18 19:53:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATVO.HHZ. 2022-03-18T18:41:28.13 3.0 undecidable manual P 0
IV.TERO.HHZ. 2022-03-18T18:41:24.86 0.3 undecidable manual S 111 43.5231 50 -0.32 68
IV.MF5.EHZ. 2022-03-18T18:41:24.42 0.6 undecidable manual S 49 37.8288 50 0.77 39
IV.CSP1.EHZ. 2022-03-18T18:41:23.25 0.3 undecidable manual S 12 37.0296 50 -0.19 71
IV.MNTT.EHZ. 2022-03-18T18:41:23.33 3.0 undecidable manual P 0
IV.FDMO.HHZ. 2022-03-18T18:41:21.29 0.3 undecidable manual S 357 30.0477 50 -0.29 70
IV.CESI.HHZ. 2022-03-18T18:41:21.66 0.6 undecidable manual S 328 31.1466 50 -0.23 47
IV.TERO.HHZ. 2022-03-18T18:41:19.48 0.6 undecidable manual P 111 43.5231 50 0.34 45
IV.MF5.EHZ. 2022-03-18T18:41:18.64 0.1 undecidable manual P 49 37.8288 50 0.39 90
IV.GUMA.HNN. 2022-03-18T18:41:18.59 0.6 undecidable manual P 29 37.7289 50 0.35 46
7F.SIB2.EHZ. 2022-03-18T18:41:18.73 0.3 undecidable manual S 49 21.1677 115 -0.27 71
7F.SIB1.EHZ. 2022-03-18T18:41:18.40 0.6 undecidable manual S 43 19.4694 117 -0.07 50
IV.LNSS.HHZ. 2022-03-18T18:41:18.20 0.3 undecidable manual S 197 18.87 118 -0.08 75
IV.CSP1.EHZ. 2022-03-18T18:41:18.00 0.1 undecidable manual P 12 37.0296 50 -0.13 95
7F.SIB3.EHZ. 2022-03-18T18:41:17.85 0.3 undecidable manual S 48 17.9709 119 -0.15 74
IV.FDMO.HHZ. 2022-03-18T18:41:17.00 0.1 undecidable manual P 357 30.0477 50 -0.05 98
IV.CESI.HHZ. 2022-03-18T18:41:17.38 0.3 undecidable manual P 328 31.1466 50 0.15 72
7F.SIB1.EHZ. 2022-03-18T18:41:15.32 0.1 undecidable manual P 43 19.4694 117 0.06 100
IV.LNSS.HHZ. 2022-03-18T18:41:15.07 0.1 undecidable manual P 197 18.87 118 -0.08 99
7F.SIB2.EHZ. 2022-03-18T18:41:15.41 0.3 undecidable manual P 49 21.1677 115 -0.16 73
IV.NRCA.HNZ. 2022-03-18T18:41:15.40 0.3 undecidable manual S 5 7.4814 143 0.19 74
7F.SIB3.EHZ. 2022-03-18T18:41:14.92 0.1 undecidable manual P 48 17.9709 119 -0.06 100
IV.NRCA.HNZ. 2022-03-18T18:41:13.61 0.1 undecidable manual P 5 7.4814 143 0.24 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:0.9 0.000060032745 0.1664 AML other m 2022-03-18T18:41:19.48
IV.LNSS.HHN. ML:0.6 0.000037363905000000004 0.1792 AML other m 2022-03-18T18:41:21.06
IV.FDMO.HHN. ML:0.5 0.0000144565675 0.3456 AML other m 2022-03-18T18:41:21.64
IV.FDMO.HHE. ML:0.6 0.0000199864605 0.256 AML other m 2022-03-18T18:41:23.67
IV.CESI.HHN. ML:0.8 0.000028160781999999997 0.32 AML other m 2022-03-18T18:41:22.11
IV.CSP1.EHE. ML:0.8 0.000027277575 0.1536 AML other m 2022-03-18T18:41:24.02
IV.CSP1.EHN. ML:1.1 0.000049381645000000005 0.32 AML other m 2022-03-18T18:41:24.58
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