Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 12-04-2022 and time 22:32:07 (Italy) in region 3 km SW Norcia (PG)

A magnitude ML 0.9 earthquake occured in region: 3 km SW Norcia (PG), on

  • 12-04-2022 20:32:07 (UTC)
  • 12-04-2022 22:32:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7770, 13.0620 at 10 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 3 4957 4957
Cascia PG 8 3217 8174
Preci PG 12 724 8898
Poggiodomo PG 13 117 9015
Cerreto di Spoleto PG 13 1075 10090
Castelsantangelo sul Nera MC 15 281 10371
Vallo di Nera PG 16 364 10735
Monteleone di Spoleto PG 17 599 11334
Sellano PG 17 1079 12413
Visso MC 17 1107 13520
Accumoli RI 18 667 14187
Sant'Anatolia di Narco PG 19 564 14751
Arquata del Tronto AP 19 1178 15929
Cittareale RI 19 482 16411
Ussita MC 20 444 16855

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SE of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
54 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
66 Km SE of Perugia (166134 inhabitants)
88 Km E of Viterbo (67173 inhabitants)
91 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km N of Tivoli (56533 inhabitants)
94 Km W of Montesilvano (53738 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 0.9 2022-04-12
20:32:07		 42.7772 13.0615 10 2022-04-12
20:38:52		 Sala Sismica INGV-Roma 103135711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-04-12 20:32:07 ± 0.07
Latitude 42.7772 ± 0.0036
Longitude 13.0615 ± 0.0074
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 103135711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 618
Semi-minor axis of confidence ellipse (meter) 27
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 278
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.06835
Epicentral distance of station farthest from the epicenter (degree) 0.29048
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 103135711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-04-12 20:38:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RM33.HNZ. 2022-04-12T20:32:18.46 0.6 undecidable manual S 157 32.2455 50 -0.31 46
IV.SMA1.EHZ. 2022-04-12T20:32:17.88 0.6 undecidable manual S 126 27.6501 50 0.35 46
IV.CESI.HHZ. 2022-04-12T20:32:17.99 0.6 undecidable manual S 333 28.2495 50 0.28 46
IV.FDMO.HHZ. 2022-04-12T20:32:17.77 0.6 undecidable manual S 4 28.8489 50 -0.09 48
IV.MC2.EHZ. 2022-04-12T20:32:14.77 0.6 undecidable manual S 35 18.1707 120 -0.04 50
IV.LNSS.HHZ. 2022-04-12T20:32:14.89 0.6 undecidable manual S 185 19.4694 118 -0.31 47
IV.GAVE.EHE. 2022-04-12T20:32:14.65 0.6 undecidable manual S 235 16.5723 122 0.3 47
IV.CESI.HHZ. 2022-04-12T20:32:13.25 0.3 undecidable manual P 333 28.2495 50 -0.17 71
IV.FDMO.HHZ. 2022-04-12T20:32:13.31 0.1 undecidable manual P 4 28.8489 50 -0.19 94
IV.SMA1.EHZ. 2022-04-12T20:32:13.81 0.3 undecidable manual P 126 27.6501 50 0.5 67
IV.RM33.HNZ. 2022-04-12T20:32:13.74 0.3 undecidable manual P 157 32.2455 50 -0.29 69
IV.LNSS.HHZ. 2022-04-12T20:32:11.96 0.3 undecidable manual P 185 19.4694 118 -0.01 75
IV.NRCA.HHZ. 2022-04-12T20:32:11.90 0.3 undecidable manual S 34 7.5813 144 -0.12 75
IV.GAVE.EHE. 2022-04-12T20:32:11.55 0.3 undecidable manual P 235 16.5723 122 0.07 74
IV.MC2.EHZ. 2022-04-12T20:32:11.85 0.3 undecidable manual P 35 18.1707 120 0.11 73
IV.NRCA.HHZ. 2022-04-12T20:32:10.23 0.1 undecidable manual P 34 7.5813 144 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.1 0.00017449999999999999 0.18 AML other m 2022-04-12T20:32:12.02
IV.NRCA.HHN. ML:1.0 0.000149 0.18 AML other m 2022-04-12T20:32:12.01
IV.LNSS.HHN. ML:0.7 0.0000353 0.72 AML other m 2022-04-12T20:32:15.57
IV.FOSV.EHE. ML:0.9 0.000015740000000000002 0.42 AML other m 2022-04-12T20:32:15.22
IV.LNSS.HHE. ML:0.5 0.000024399999999999997 0.36 AML other m 2022-04-12T20:32:15.30
IV.FOSV.EHN. ML:1.0 0.000021199999999999997 0.46 AML other m 2022-04-12T20:32:23.32
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