Earthquake with magnitude of ML 1.2 on date 22-09-2021 and time 06:06:38 (Italy) in region 8 km N Sellano (PG)

A magnitude ML 1.2 earthquake occured in region: 8 km N Sellano (PG), on

  • 22-09-2021 04:06:38 (UTC)
  • 22-09-2021 06:06:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.956, 12.906 at 12 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 8 1079 1079
Monte Cavallo MC 9 145 1224
Serravalle di Chienti MC 14 1070 2294
Preci PG 14 724 3018
Cerreto di Spoleto PG 15 1075 4093
Visso MC 15 1107 5200
Pieve Torina MC 15 1458 6658
Trevi PG 16 8469 15127
Foligno PG 16 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 19 8645 87194
Nocera Umbra PG 20 5839 93033

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km E of Foligno (57155 inhabitants)
45 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 1.2 2021-09-22
04:06:38
42.9562 12.9057 12 2021-09-22
04:14:30
Sala Sismica INGV-Roma 95722881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-22 04:06:38 ± 0.06
Latitude 42.9562 ± 0.0036
Longitude 12.9057 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95722881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 325
Semi-minor axis of confidence ellipse (meter) 234
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 223
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.31296
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 95722881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-22 04:14:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2021-09-22T04:07:03.58 3.0 negative manual P 2.34 0
IV.MURB.HHZ. 2021-09-22T04:06:51.63 3.0 undecidable manual S -2.21 0
IV.PE3.EHZ. 2021-09-22T04:06:50.93 3.0 negative manual P -2.98 0
IV.SNTG.HHZ. 2021-09-22T04:06:49.36 0.6 undecidable manual S 5 0.2995 91 -0.06 47
IV.CSP1.EHZ. 2021-09-22T04:06:48.22 0.3 undecidable manual S 58 0.2572 92 0.06 71
IV.EL6.EHZ. 2021-09-22T04:06:46.42 3.0 negative manual P -0.08 0
IV.ASSB.HHZ. 2021-09-22T04:06:46.19 0.3 undecidable manual S 296 0.1996 93 -0.28 69
IV.NRCA.HHZ. 2021-09-22T04:06:46.09 0.1 undecidable manual S 129 0.1961 93 -0.25 92
IV.MMO1.EHZ. 2021-09-22T04:06:45.03 1.0 undecidable manual P 100 0.313 91 0.17 23
IV.MML1.EHZ. 2021-09-22T04:06:45.44 0.3 undecidable manual S 17 0.1646 95 0.03 73
IV.SNTG.HHZ. 2021-09-22T04:06:44.62 0.6 negative manual P 5 0.2995 91 -0.01 48
IV.PF6.EHN. 2021-09-22T04:06:44.23 0.1 undecidable manual P 49 0.2779 91 -0.03 95
IV.ATCC.EHZ. 2021-09-22T04:06:44.77 0.3 undecidable manual P 320 0.3004 91 0.14 70
IV.FDMO.HHZ. 2021-09-22T04:06:44.97 0.3 undecidable manual S 59 0.1547 96 -0.17 71
IV.MOMA.HHZ. 2021-09-22T04:06:44.80 0.6 negative manual P 238 0.2887 91 0.35 45
IV.MC2.EHE. 2021-09-22T04:06:43.82 0.6 undecidable manual P 102 0.2122 92 0.69 41
IV.FEMA.HNN. 2021-09-22T04:06:43.79 0.3 undecidable manual S 87 0.1052 115 0.07 74
IV.GAVE.EHE. 2021-09-22T04:06:43.88 0.3 undecidable manual P 182 0.2644 91 -0.14 70
IV.CSP1.EHZ. 2021-09-22T04:06:43.95 0.6 positive manual P 58 0.2572 92 0.05 48
IV.MML1.EHZ. 2021-09-22T04:06:42.41 0.1 positive manual P 17 0.1646 95 0.09 96
IT.MTCL.HGZ. 2021-09-22T04:06:42.91 0.3 undecidable manual S 61 0.0782 129 -0.12 73
IV.NRCA.HHZ. 2021-09-22T04:06:42.73 0.1 positive manual P 129 0.1961 93 -0.12 95
IV.ASSB.HHZ. 2021-09-22T04:06:42.87 0.6 positive manual P 296 0.1996 93 -0.06 48
IV.SEF1.HNZ. 2021-09-22T04:06:42.58 0.3 undecidable manual P 9 0.1934 93 -0.22 70
IV.FDMO.HHZ. 2021-09-22T04:06:42.20 0.6 undecidable manual P 59 0.1547 96 0.04 49
IV.CESI.HHZ. 2021-09-22T04:06:42.43 0.1 undecidable manual S 359 0.0486 147 -0.02 100
IT.MTCL.HGZ. 2021-09-22T04:06:41.04 0.3 undecidable manual P 61 0.0782 129 0.1 73
IV.FEMA.HNN. 2021-09-22T04:06:41.47 0.3 undecidable manual P 87 0.1052 115 0.13 73
IV.CESI.HHZ. 2021-09-22T04:06:40.76 0.1 undecidable manual P 359 0.0486 147 0.16 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.2 0.000256 0.06 AML other m 2021-09-22T04:06:42.56
IV.CESI.HHN. ML:1.3 0.000312 0.16 AML other m 2021-09-22T04:06:42.55
IV.FDMO.HHN. ML:1 8.075E-5 0.18 AML other m 2021-09-22T04:06:45.26
IV.FDMO.HHE. ML:1 9.05E-5 0.14 AML other m 2021-09-22T04:06:45.23
IV.MML1.EHN. ML:1.3 0.0001725 0.16 AML other m 2021-09-22T04:06:45.63
IV.MML1.EHE. ML:1.6 0.0002835 0.2 AML other m 2021-09-22T04:06:45.66
IV.NRCA.HHN. ML:1.2 0.00010135 0.14 AML other m 2021-09-22T04:06:46.38
IV.ASSB.HHE. ML:0.9 4.92E-5 0.64 AML other m 2021-09-22T04:06:46.50
IV.NRCA.HHE. ML:1.1 8.585E-5 1.08 AML other m 2021-09-22T04:06:47.59
IV.ASSB.HHN. ML:0.9 5.005E-5 0.8 AML other m 2021-09-22T04:06:47.23
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