Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 12-03-2022 and time 19:46:09 (UTC) in region 2 km SW Norcia (PG)

A magnitude ML 0.9 earthquake occured in region: 2 km SW Norcia (PG), on

  • 12-03-2022 19:46:09 (UTC)
  • 12-03-2022 20:46:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7780, 13.0770 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 2 4957 4957
Cascia PG 8 3217 8174
Preci PG 12 724 8898
Poggiodomo PG 14 117 9015
Cerreto di Spoleto PG 14 1075 10090
Castelsantangelo sul Nera MC 15 281 10371
Accumoli RI 17 667 11038
Visso MC 17 1107 12145
Monteleone di Spoleto PG 17 599 12744
Sellano PG 17 1079 13823
Vallo di Nera PG 18 364 14187
Arquata del Tronto AP 18 1178 15365
Cittareale RI 19 482 15847
Ussita MC 19 444 16291

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km SE of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
53 Km W of Teramo (54892 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
67 Km SE of Perugia (166134 inhabitants)
89 Km E of Viterbo (67173 inhabitants)
91 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
93 Km N of Tivoli (56533 inhabitants)
99 Km W of Pescara (121014 inhabitants)
100 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
Reviewed
Rev100 		ML 0.9 2022-03-12
19:46:09		 42.7778 13.0773 10 2022-03-12
19:58:38		 Sala Sismica INGV-Roma 101916301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-03-12 19:46:09 ± 0.09
Latitude 42.7778 ± 0.0027
Longitude 13.0773 ± 0.0110
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 101916301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 881
Semi-minor axis of confidence ellipse (meter) 249
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 274
Circular confidence region, given by single value of horizontal uncertainty (meter) 880.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 173
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41639
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 101916301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-03-12 19:58:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRON.EHZ. 2022-03-12T19:46:25.80 3.0 undecidable manual P 0.08 0
IV.RM33.EHZ. 2022-03-12T19:46:20.73 0.6 undecidable manual S 159 31.8459 50 -0.15 47
IV.FDMO.HHZ. 2022-03-12T19:46:19.98 0.6 undecidable manual S 2 28.6491 50 -0.05 49
IV.SMA1.EHZ. 2022-03-12T19:46:19.73 0.6 undecidable manual S 128 26.6511 50 0.25 47
IV.TERO.HHZ. 2022-03-12T19:46:18.17 0.6 undecidable manual P 112 46.2204 50 -0.21 46
IV.LNSS.HHZ. 2022-03-12T19:46:17.39 0.6 undecidable manual S 189 19.6692 118 -0.04 50
IV.MC2.EHZ. 2022-03-12T19:46:16.91 0.6 undecidable manual S 31 17.3715 121 0.17 48
IV.RM33.EHZ. 2022-03-12T19:46:16.08 1.0 negative manual P 159 31.8459 50 -0.09 24
IV.SMA1.EHZ. 2022-03-12T19:46:15.28 0.6 negative manual P 128 26.6511 50 -0.08 49
IV.FDMO.HHZ. 2022-03-12T19:46:15.74 0.6 positive manual P 2 28.6491 50 0.06 49
IV.LNSS.HHZ. 2022-03-12T19:46:14.41 0.6 negative manual P 189 19.6692 118 0.23 48
IV.NRCA.HHZ. 2022-03-12T19:46:13.60 0.6 undecidable manual S 26 6.8931 146 -0.42 47
IV.MC2.EHZ. 2022-03-12T19:46:13.97 1.0 undecidable manual P 31 17.3715 121 0.19 24
IV.NRCA.HHZ. 2022-03-12T19:46:12.31 0.1 undecidable manual P 26 6.8931 146 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.7 0.0007794999999999999 0.16 AML other m 2022-03-12T19:46:13.64
IV.NRCA.HHE. ML:1.5 0.000445 0.42 AML other m 2022-03-12T19:46:13.72
IV.LNSS.HHN. ML:0.9 0.00005795 0.1 AML other m 2022-03-12T19:46:18.11
IV.LNSS.HHE. ML:0.9 0.000059749999999999995 0.14 AML other m 2022-03-12T19:46:18.13
IV.FDMO.HHE. ML:0.6 0.000020749999999999996 1.48 AML other m 2022-03-12T19:46:21.84
IV.FDMO.HHN. ML:0.6 0.00001795 0.96 AML other m 2022-03-12T19:46:22.92
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