Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 21-09-2022 and time 09:40:50 (Italy) in region 4 km N Sellano (PG)

A magnitude ML 1.0 earthquake occured in region: 4 km N Sellano (PG), on

  • 21-09-2022 07:40:50 (UTC)
  • 21-09-2022 09:40:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9220, 12.9340 at 11 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
Sellano PG 4 1079 1079
Preci PG 10 724 1803
Monte Cavallo MC 10 145 1948
Cerreto di Spoleto PG 11 1075 3023
Visso MC 13 1107 4130
Trevi PG 16 8469 12599
Pieve Torina MC 17 1458 14057
Ussita MC 17 444 14501
Serravalle di Chienti MC 17 1070 15571
Campello sul Clitunno PG 17 2442 18013
Vallo di Nera PG 18 364 18377
Fiordimonte MC 18 202 18579
Castelsantangelo sul Nera MC 18 281 18860
Foligno PG 19 57155 76015
Norcia PG 19 4957 80972
Pievebovigliana MC 20 866 81838

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
49 Km E of Perugia (166134 inhabitants)
69 Km W of Teramo (54892 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
91 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 1.0 2022-09-21
07:40:50		 42.9215 12.9338 11 2022-09-21
07:51:35		 Sala Sismica INGV-Roma 109953251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-09-21 07:40:50 ± 0.05
Latitude 42.9215 ± 0.0018
Longitude 12.9338 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 109953251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 285
Semi-minor axis of confidence ellipse (meter) 223
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 51
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
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) 0.08633
Epicentral distance of station farthest from the epicenter (degree) 0.33365
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:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 109953251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-09-21 07:51:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SNTG.HHZ. 2022-09-21T07:41:03.18 0.3 undecidable manual S 1 37.0296 50 0.13 72
IV.CSP1.EHZ. 2022-09-21T07:41:01.04 0.1 undecidable manual S 49 28.9488 50 0.13 97
7F.SIB2.EHZ. 2022-09-21T07:41:01.10 0.1 undecidable manual S 96 30.2475 50 -0.15 93
7F.SIB3.EHZ. 2022-09-21T07:41:00.30 0.3 undecidable manual S 101 27.75 50 -0.29 68
7F.SIB1.EHZ. 2022-09-21T07:41:00.68 0.3 undecidable manual S 96 27.4503 50 0.17 72
IV.GAVE.HNZ. 2022-09-21T07:40:59.98 0.1 undecidable manual S 187 25.6521 50 -0.04 96
IV.ASSB.HHZ. 2022-09-21T07:40:59.77 0.3 undecidable manual S 301 26.0517 50 -0.36 66
IV.MML1.EHZ. 2022-09-21T07:40:58.88 0.1 undecidable manual S 8 21.5673 50 -0.04 96
IV.SNTG.HHZ. 2022-09-21T07:40:57.84 0.1 undecidable manual P 1 37.0296 50 0.02 95
IV.FDMO.HHZ. 2022-09-21T07:40:57.73 0.1 undecidable manual S 44 17.871 121 -0.2 96
IV.NRCA.HHZ. 2022-09-21T07:40:57.78 0.1 undecidable manual S 124 17.5713 122 -0.08 99
IV.ASSB.HHZ. 2022-09-21T07:40:56.42 0.3 undecidable manual P 301 26.0517 50 0.28 70
IV.GAVE.HNZ. 2022-09-21T07:40:56.03 0.1 undecidable manual P 187 25.6521 50 -0.04 96
7F.SIB3.EHZ. 2022-09-21T07:40:56.36 0.3 undecidable manual P 101 27.75 50 -0.04 72
IV.FEMA.HNZ. 2022-09-21T07:40:56.09 0.1 undecidable manual S 64 10.3785 136 0.18 96
IV.CSP1.EHZ. 2022-09-21T07:40:56.64 0.1 undecidable manual P 49 28.9488 50 0.05 97
7F.SIB1.EHZ. 2022-09-21T07:40:56.59 0.3 undecidable manual P 96 27.4503 50 0.24 71
7F.SIB2.EHZ. 2022-09-21T07:40:56.75 0.1 undecidable manual P 96 30.2475 50 -0.03 96
IV.CESI.HHZ. 2022-09-21T07:40:55.68 0.1 undecidable manual S 346 9.5793 139 -0.03 100
IV.MML1.EHZ. 2022-09-21T07:40:55.53 0.1 undecidable manual P 8 21.5673 50 0.09 98
IT.MTCL.HGZ. 2022-09-21T07:40:55.58 0.1 undecidable manual S 33 9.6792 139 -0.14 100
IV.FDMO.HHZ. 2022-09-21T07:40:54.79 0.1 undecidable manual P 44 17.871 121 -0.08 98
IV.NRCA.HHZ. 2022-09-21T07:40:54.82 0.1 undecidable manual P 124 17.5713 122 -0.01 99
IV.FEMA.HNZ. 2022-09-21T07:40:53.98 0.1 undecidable manual P 64 10.3785 136 0.28 94
IT.MTCL.HGZ. 2022-09-21T07:40:53.63 0.1 undecidable manual P 33 9.6792 139 0.04 99
IV.CESI.HHZ. 2022-09-21T07:40:53.71 0.1 undecidable manual P 346 9.5793 139 0.13 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.1 0.0000996 1.6 AML other m 2022-09-21T07:40:58.08
IV.FDMO.HHN. ML:0.8 0.00004912717 0.3584 AML other m 2022-09-21T07:40:57.97
IV.MML1.HNE. ML:1.5 0.0002215 0.2 AML other m 2022-09-21T07:40:59.14
IV.MML1.EHE. ML:1.5 0.00023649999999999998 0.2 AML other m 2022-09-21T07:40:59.14
IV.MML1.EHN. ML:1.1 0.00008130725 0.1792 AML other m 2022-09-21T07:40:59.28
IV.CESI.HHE. ML:0.8 0.0000691788 0.1856 AML other m 2022-09-21T07:40:55.81
IV.CESI.HHN. ML:1.2 0.0002085399 0.32 AML other m 2022-09-21T07:40:56.11
IV.NRCA.HHE. ML:0.7 0.000039305049999999994 0.1216 AML other m 2022-09-21T07:40:58.20
IV.NRCA.HHN. ML:0.6 0.000028151530000000002 0.4608 AML other m 2022-09-21T07:40:58.04
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