Earthquake with magnitude of ML 0.6 on date 19-09-2021 and time 00:10:37 (Italy) in region 7 km NW Sellano (PG)

A magnitude ML 0.6 earthquake occured in region: 7 km NW Sellano (PG), on

  • 18-09-2021 22:10:37 (UTC)
  • 19-09-2021 00:10:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.949, 12.9 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.

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 10 145 1224
Preci PG 14 724 1948
Cerreto di Spoleto PG 14 1075 3023
Serravalle di Chienti MC 14 1070 4093
Trevi PG 15 8469 12562
Visso MC 16 1107 13669
Foligno PG 16 57155 70824
Pieve Torina MC 16 1458 72282
Valtopina PG 17 1398 73680
Campello sul Clitunno PG 17 2442 76122
Fiordimonte MC 18 202 76324
Muccia MC 19 915 77239
Spello PG 19 8645 85884
Ussita MC 20 444 86328
Pievebovigliana MC 20 866 87194

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
48 Km NE of Terni (111501 inhabitants)
73 Km W of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
88 Km NE of Viterbo (67173 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
100 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 0.6 2021-09-18
22:10:37
42.9492 12.9002 11 2021-09-18
22:38:34
Sala Sismica INGV-Roma 95604151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-18 22:10:37 ± 0.04
Latitude 42.9492 ± 0.0027
Longitude 12.9002 ± 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 95604151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 340
Semi-minor axis of confidence ellipse (meter) 139
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2644
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 95604151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-18 22:38:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CAR1.HHZ. 2021-09-18T22:12:28.86 3.0 undecidable manual Sn -7.1 0
GU.BURY.HHZ. 2021-09-18T22:12:23.40 3.0 undecidable manual Sn -0.94 0
IV.CRAC.EHZ. 2021-09-18T22:12:20.43 3.0 undecidable manual Sg 3.61 0
CR.ZAG.BHZ. 2021-09-18T22:12:18.36 3.0 undecidable manual Sn 4.49 0
OX.VARN.HHZ. 2021-09-18T22:12:12.62 3.0 undecidable manual Sg 11.44 0
IV.ESML.HHZ. 2021-09-18T22:12:08.49 3.0 positive manual Pg 9.8 0
IV.CPTP.HHZ. 2021-09-18T22:12:05.25 3.0 undecidable manual Pg 5.36 0
SL.LJU.BHZ. 2021-09-18T22:12:02.87 3.0 undecidable manual Sn -3.13 0
IV.SELL.HHZ. 2021-09-18T22:11:48.38 3.0 positive manual Pn -0.89 0
IV.MTMR.EHZ. 2021-09-18T22:11:47.13 3.0 undecidable manual Sg -2.44 0
IV.MONC.HHZ. 2021-09-18T22:11:41.47 3.0 positive manual Pn 1.97 0
IV.MGR.HNZ. 2021-09-18T22:11:26.37 3.0 undecidable manual Pn -3.39 0
IX.SCL3.EHZ.02 2021-09-18T22:11:24.00 3.0 negative manual Pg 0.67 0
IV.FIR.HHZ. 2021-09-18T22:11:22.62 3.0 undecidable manual Sn 0.55 0
IV.VENT.EHZ. 2021-09-18T22:11:13.28 3.0 positive manual Pg 0.49 0
IV.TREM.HHZ. 2021-09-18T22:11:10.48 3.0 negative manual Pg -0.42 0
IV.APEC.HHZ. 2021-09-18T22:11:00.72 3.0 undecidable manual S -0.53 0
IV.GAVE.EHZ. 2021-09-18T22:10:47.02 0.1 undecidable manual S 181 0.2572 90 -0.12 96
IV.CSP1.EHZ. 2021-09-18T22:10:47.37 0.3 undecidable manual S 57 0.2644 90 0 74
IV.ASSB.HHZ. 2021-09-18T22:10:45.38 0.1 undecidable manual S 298 0.1996 90 -0.07 98
IV.SRES.HHZ. 2021-09-18T22:10:45.08 3.0 negative manual P -8.01 0
IV.TRE1.HNZ. 2021-09-18T22:10:45.20 3.0 undecidable manual P -0.49 0
IV.MML1.EHZ. 2021-09-18T22:10:44.54 0.1 undecidable manual S 18 0.1727 91 -0.1 98
IV.CSP1.EHZ. 2021-09-18T22:10:43.05 0.1 undecidable manual P 57 0.2644 90 0.03 98
IV.GAVE.EHZ. 2021-09-18T22:10:42.93 0.1 undecidable manual P 181 0.2572 90 0.04 98
IV.MML1.EHZ. 2021-09-18T22:10:41.52 0.1 undecidable manual P 18 0.1727 91 0.08 99
IV.ASSB.HHZ. 2021-09-18T22:10:41.99 0.1 undecidable manual P 298 0.1996 90 0.08 98
IV.CESI.HHZ. 2021-09-18T22:10:41.39 0.1 undecidable manual S 3 0.0558 141 -0.11 100
IV.CESI.HHZ. 2021-09-18T22:10:39.77 0.1 undecidable manual P 3 0.0558 141 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.5 4.57E-5 0.08 AML other m 2021-09-18T22:10:41.44
IV.CESI.HHE. ML:0.5 4.765E-5 0.32 AML other m 2021-09-18T22:10:41.49
IV.MML1.EHE. ML:0.8 4.47E-5 0.2 AML other m 2021-09-18T22:10:44.88
IV.MML1.EHN. ML:0.4 1.83E-5 1.44 AML other m 2021-09-18T22:10:44.89
IV.GAVE.EHN. ML:0.6 1.985E-5 0.14 AML other m 2021-09-18T22:10:47.59
IV.GAVE.EHE. ML:0.6 2.14E-5 0.14 AML other m 2021-09-18T22:10:47.56
IX.SCL3.EHN.02 ML:3.6 0.0003395 0.46 AML other m 2021-09-18T22:11:36.67
IX.SCL3.EHE.02 ML:3.4 0.0002625 1.3 AML other m 2021-09-18T22:11:37.17
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