Earthquake with magnitude of ML 1.0 on date 09-10-2021 and time 13:58:01 (Italy) in region 3 km E Sellano (PG)

A magnitude ML 1.0 earthquake occured in region: 3 km E Sellano (PG), on

  • 09-10-2021 11:58:01 (UTC)
  • 09-10-2021 13:58:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.904, 12.964 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 3 1079 1079
Preci PG 7 724 1803
Cerreto di Spoleto PG 10 1075 2878
Monte Cavallo MC 11 145 3023
Visso MC 11 1107 4130
Ussita MC 15 444 4574
Castelsantangelo sul Nera MC 16 281 4855
Norcia PG 16 4957 9812
Vallo di Nera PG 17 364 10176
Pieve Torina MC 17 1458 11634
Campello sul Clitunno PG 18 2442 14076
Trevi PG 18 8469 22545
Fiordimonte MC 18 202 22747
Serravalle di Chienti MC 19 1070 23817

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
52 Km E of Perugia (166134 inhabitants)
66 Km W of Teramo (54892 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
91 Km SW of Ancona (100861 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 1.0 2021-10-09
11:58:01
42.9043 12.964 10 2021-10-09
12:05:40
Sala Sismica INGV-Roma 96381971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-09 11:58:01 ± 0.06
Latitude 42.9043 ± 0.0027
Longitude 12.9640 ± 0.0061
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 96381971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 446
Semi-minor axis of confidence ellipse (meter) 280
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 85
Circular confidence region, given by single value of horizontal uncertainty (meter) 450
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.08544
Epicentral distance of station farthest from the epicenter (degree) 0.35074
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.4
Num. used stations 16
Type of magnitude ML
Reference to an origin 96381971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-09 12:05:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SNTG.HHZ. 2021-10-09T11:58:14.68 0.6 undecidable manual S 357 0.3507 50 0.08 48
IV.LNSS.HNN. 2021-10-09T11:58:13.12 0.6 undecidable manual S 169 0.3067 50 -0.16 48
IV.CSP1.EHZ. 2021-10-09T11:58:11.96 0.6 undecidable manual S 43 0.2572 50 0.14 48
IV.ASSB.HHZ. 2021-10-09T11:58:11.88 0.3 undecidable manual S 302 0.2626 50 -0.1 73
IV.GAVE.HNE. 2021-10-09T11:58:10.61 0.6 undecidable manual S 194 0.2176 112 0.04 50
IV.MML1.EHZ. 2021-10-09T11:58:10.32 0.6 undecidable manual S 2 0.2095 113 0.07 50
IV.SNTG.HHZ. 2021-10-09T11:58:09.07 0.3 undecidable manual P 357 0.3507 50 0.01 73
IV.MC2.EHZ. 2021-10-09T11:58:08.99 0.6 undecidable manual S 87 0.1646 119 0.27 48
IV.LNSS.HNN. 2021-10-09T11:58:08.05 0.1 undecidable manual P 169 0.3067 50 -0.25 94
IV.FDMO.HHZ. 2021-10-09T11:58:08.25 0.6 undecidable manual S 34 0.1601 119 -0.3 48
IV.ASSB.HHZ. 2021-10-09T11:58:07.88 0.1 undecidable manual P 302 0.2626 50 0.33 93
IV.CESI.HHZ. 2021-10-09T11:58:07.04 0.6 undecidable manual S 337 0.1097 129 0.1 50
IV.CSP1.EHZ. 2021-10-09T11:58:07.35 0.3 positive manual P 43 0.2572 50 -0.1 73
IV.MML1.EHZ. 2021-10-09T11:58:06.54 1.0 positive manual P 2 0.2095 113 -0.01 25
IV.FEMA.HNZ. 2021-10-09T11:58:06.19 0.6 undecidable manual S 47 0.0854 136 -0.06 51
IV.GAVE.HNE. 2021-10-09T11:58:06.58 0.1 undecidable manual P 194 0.2176 112 -0.16 97
IT.MTCL.HGZ. 2021-10-09T11:58:06.08 0.6 undecidable manual S 16 0.0935 134 -0.39 47
IV.NRCA.HHZ. 2021-10-09T11:58:05.54 0.1 undecidable manual P 123 0.1304 124 0.52 91
IV.MC2.EHZ. 2021-10-09T11:58:05.47 0.1 undecidable manual P 87 0.1646 119 -0.19 98
IV.FDMO.HHZ. 2021-10-09T11:58:05.56 0.6 positive manual P 34 0.1601 119 -0.01 51
IT.MTCL.HGZ. 2021-10-09T11:58:04.14 0.1 undecidable manual P 16 0.0935 134 -0.22 98
IV.CESI.HHZ. 2021-10-09T11:58:04.78 0.3 undecidable manual P 337 0.1097 129 0.14 75
IV.FEMA.HNZ. 2021-10-09T11:58:04.39 0.1 undecidable manual P 47 0.0854 136 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.8 6.907383E-5 0.0576 AML other m 2021-10-09T11:58:07.27
IV.CESI.HHN. ML:0.9 8.939589E-5 0.096 AML other m 2021-10-09T11:58:07.30
IV.CESI.HNE. ML:0.9 9.69454E-5 0.7104 AML other m 2021-10-09T11:58:07.31
IV.CESI.HNN. ML:1.2 0.000165841245 0.5504 AML other m 2021-10-09T11:58:06.92
IV.FDMO.HHE. ML:0.4 2.240392E-5 0.2432 AML other m 2021-10-09T11:58:08.60
IV.FDMO.HHN. ML:0.4 2.1200665E-5 0.96 AML other m 2021-10-09T11:58:08.54
IV.MML1.EHE. ML:0.6 2.7155835E-5 0.224 AML other m 2021-10-09T11:58:10.48
IV.MML1.EHN. ML:0.7 2.95489765E-5 0.064 AML other m 2021-10-09T11:58:11.20
IV.MML1.HNE. ML:1.1 7.3064745E-5 0.6912 AML other m 2021-10-09T11:58:10.82
IV.MML1.HNN. ML:1.3 0.00012605025 0.8896 AML other m 2021-10-09T11:58:10.72
IV.CSP1.EHE. ML:1.4 0.0001425749 2.4768 AML other m 2021-10-09T11:58:12.06
IV.CSP1.EHN. ML:1.5 0.0001756889 1.7536 AML other m 2021-10-09T11:58:10.11
IV.SNTG.HHE. ML:0.6 1.4794295E-5 0.8576 AML other m 2021-10-09T11:58:14.52
IV.SNTG.HHN. ML:1 3.8393855E-5 1.4592 AML other m 2021-10-09T11:58:14.10
IV.SNTG.HNE. ML:1.7 0.0001645117 1.3888 AML other m 2021-10-09T11:58:18.13
IV.SNTG.HNN. ML:1.5 0.00011564453 1.5936 AML other m 2021-10-09T11:58:15.25
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