Earthquake with magnitude of ML 0.9 on date 22-09-2021 and time 09:13:32 (Italy) in region 7 km N Sellano (PG)

A magnitude ML 0.9 earthquake occured in region: 7 km N Sellano (PG), on

  • 22-09-2021 07:13:32 (UTC)
  • 22-09-2021 09:13:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.954, 12.908 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.

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 7 1079 1079
Monte Cavallo MC 9 145 1224
Preci PG 14 724 1948
Serravalle di Chienti MC 14 1070 3018
Cerreto di Spoleto PG 15 1075 4093
Visso MC 15 1107 5200
Trevi PG 15 8469 13669
Pieve Torina MC 16 1458 15127
Foligno PG 17 57155 72282
Valtopina PG 17 1398 73680
Fiordimonte MC 18 202 73882
Muccia MC 18 915 74797
Campello sul Clitunno PG 18 2442 77239
Pievebovigliana MC 19 866 78105
Ussita MC 19 444 78549
Spello PG 20 8645 87194
Nocera Umbra PG 20 5839 93033

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km E of Foligno (57155 inhabitants)
46 Km E of Perugia (166134 inhabitants)
49 Km NE of Terni (111501 inhabitants)
73 Km W of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
99 Km S of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.9 2021-09-22
07:13:32
42.9538 12.9077 10 2021-09-22
07:29:35
Sala Sismica INGV-Roma 95727371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-22 07:13:32 ± 0.06
Latitude 42.9538 ± 0.0036
Longitude 12.9077 ± 0.0049
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 95727371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 389
Semi-minor axis of confidence ellipse (meter) 365
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 164
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
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) 0.05126
Epicentral distance of station farthest from the epicenter (degree) 0.41729
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 95727371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-22 07:29:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-09-22T07:13:47.87 0.6 undecidable manual S 21 0.4011 50 0.47 43
IV.MOMA.HHZ. 2021-09-22T07:13:44.69 0.6 undecidable manual S 239 0.2887 50 0.61 42
IV.SNTG.HHZ. 2021-09-22T07:13:44.52 0.6 undecidable manual S 5 0.3022 50 0.05 48
IV.ATCC.EHZ. 2021-09-22T07:13:44.61 0.6 undecidable manual S 320 0.3031 50 0.12 47
IV.CSP1.EHZ. 2021-09-22T07:13:42.98 0.6 undecidable manual S 57 0.2572 50 -0.16 47
IV.ASSB.HHZ. 2021-09-22T07:13:41.11 0.6 undecidable manual S 296 0.2023 115 -0.38 46
IV.EL6.EHZ. 2021-09-22T07:13:41.18 0.6 negative manual P 21 0.4011 50 -0.1 47
IV.CESX.HHE. 2021-09-22T07:13:41.52 0.1 undecidable manual P 214 0.4173 50 -0.04 94
IV.NRCA.HNZ. 2021-09-22T07:13:40.87 0.6 undecidable manual S 128 0.1934 116 -0.3 47
IV.MML1.HNZ. 2021-09-22T07:13:40.10 0.6 undecidable manual S 16 0.1664 119 -0.15 48
IV.FDMO.HHZ. 2021-09-22T07:13:39.69 0.6 undecidable manual S 58 0.1556 121 -0.19 48
IV.ATCC.EHZ. 2021-09-22T07:13:39.51 0.3 undecidable manual P 320 0.3031 50 -0.08 71
IV.MOMA.HHZ. 2021-09-22T07:13:39.57 0.6 negative manual P 239 0.2887 50 0.21 47
IV.SNTG.HHZ. 2021-09-22T07:13:39.37 1.0 negative manual P 5 0.3022 50 -0.21 23
IV.GAVE.HNZ. 2021-09-22T07:13:38.68 0.1 undecidable manual P 182 0.2617 50 -0.21 93
IV.CSP1.EHZ. 2021-09-22T07:13:38.62 0.1 undecidable manual P 57 0.2572 50 -0.2 94
IV.MC2.EHZ. 2021-09-22T07:13:38.18 0.1 undecidable manual P 102 0.2104 50 0.17 95
IV.FEMA.HNZ. 2021-09-22T07:13:38.64 0.6 undecidable manual S 85 0.1043 132 0.35 47
IV.NRCA.HNZ. 2021-09-22T07:13:37.44 0.1 undecidable manual P 128 0.1934 116 -0.23 94
IT.MTCL.HGZ. 2021-09-22T07:13:37.46 0.6 undecidable manual S 59 0.0782 140 -0.13 49
IV.ASSB.HHZ. 2021-09-22T07:13:37.63 0.3 positive manual P 296 0.2023 115 -0.23 71
IV.CESI.HNZ. 2021-09-22T07:13:37.18 0.6 undecidable manual S 358 0.0513 151 0.18 49
IV.FEMA.HNZ. 2021-09-22T07:13:36.46 0.1 undecidable manual P 85 0.1043 132 0.45 92
IV.FDMO.HHZ. 2021-09-22T07:13:36.95 0.1 undecidable manual P 58 0.1556 121 0.02 99
IV.MML1.HNZ. 2021-09-22T07:13:36.94 0.1 undecidable manual P 16 0.1664 119 -0.2 96
IV.CESI.HNZ. 2021-09-22T07:13:35.53 0.1 undecidable manual P 358 0.0513 151 0.26 96
IT.MTCL.HGZ. 2021-09-22T07:13:35.66 0.1 undecidable manual P 59 0.0782 140 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:0.8 4.344079E-5 0.16 AML other m 2021-09-22T07:13:41.33
IV.ASSB.HHE. ML:0.8 4.19E-5 0.5 AML other m 2021-09-22T07:13:41.31
IV.SNTG.HHE. ML:0.8 2.348882E-5 0.0768 AML other m 2021-09-22T07:13:45.24
IV.SNTG.HHN. ML:0.7 2.001347E-5 0.0992 AML other m 2021-09-22T07:13:45.26
IV.SNTG.HNN. ML:1.4 0.00010784165 0.8704 AML other m 2021-09-22T07:13:43.96
IV.ATCC.EHE. ML:1 4.0298015E-5 0.4 AML other m 2021-09-22T07:13:50.88
IV.ATCC.EHN. ML:1 4.108597E-5 0.3808 AML other m 2021-09-22T07:13:50.40
IV.MOMA.HHE. ML:0.8 2.4370975E-5 0.16 AML other m 2021-09-22T07:13:46.48
IV.MOMA.HHN. ML:0.6 2.040315E-5 0.24 AML other m 2021-09-22T07:13:46.02
IV.MOMA.HNE. ML:1.4 9.9016665E-5 0.7392 AML other m 2021-09-22T07:13:47.35
IV.EL6.EHE. ML:1.1 3.9082745E-5 0.2592 AML other m 2021-09-22T07:13:49.24
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