Earthquake with magnitude of ML 0.8 on date 03-09-2021 and time 23:53:30 (Italy) in region 1 km NW Sellano (PG)

A magnitude ML 0.8 earthquake occured in region: 1 km NW Sellano (PG), on

  • 03-09-2021 21:53:30 (UTC)
  • 03-09-2021 23:53:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.896, 12.922 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 1 1079 1079
Cerreto di Spoleto PG 8 1075 2154
Preci PG 10 724 2878
Monte Cavallo MC 13 145 3023
Trevi PG 14 8469 11492
Visso MC 14 1107 12599
Campello sul Clitunno PG 14 2442 15041
Vallo di Nera PG 15 364 15405
Norcia PG 18 4957 20362
Ussita MC 19 444 20806
Castelsantangelo sul Nera MC 19 281 21087
Foligno PG 19 57155 78242
Sant'Anatolia di Narco PG 19 564 78806
Pieve Torina MC 20 1458 80264
Serravalle di Chienti MC 20 1070 81334

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km E of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
49 Km E of Perugia (166134 inhabitants)
69 Km W of Teramo (54892 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
85 Km NE of Viterbo (67173 inhabitants)
94 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.8 2021-09-03
21:53:30
42.8962 12.9215 11 2021-09-03
22:06:40
Sala Sismica INGV-Roma 95010081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-03 21:53:30 ± 0.05
Latitude 42.8962 ± 0.0027
Longitude 12.9215 ± 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 95010081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 311
Semi-minor axis of confidence ellipse (meter) 294
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 61
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 24
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
Epicentral distance of station farthest from the epicenter (degree) 0.35433
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 14
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 95010081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-03 22:06:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FREG.EHZ. 2021-09-03T21:55:09.12 3.0 undecidable manual Sg 11.15 0
IV.CADC.EHZ. 2021-09-03T21:55:05.28 3.0 undecidable manual Sn 4.32 0
IX.SCL3.EHZ.02 2021-09-03T21:55:00.40 3.0 undecidable manual Sg 7.7 0
OX.MARN.HHZ. 2021-09-03T21:54:55.19 3.0 undecidable manual Sn 0.48 0
IV.EFIU.HHZ. 2021-09-03T21:54:54.82 3.0 undecidable manual Pn 4.24 0
IV.CMPR.HHZ. 2021-09-03T21:54:53.11 3.0 undecidable manual Sn -4.64 0
MN.VAE.HHZ. 2021-09-03T21:54:50.83 3.0 undecidable manual Pn -1.69 0
IX.NSC3.EHZ.02 2021-09-03T21:54:45.57 3.0 undecidable manual Sn 0.28 0
IV.ICAI.EHZ. 2021-09-03T21:54:32.25 3.0 undecidable manual Sn -5.28 0
IV.CAPR.HNZ. 2021-09-03T21:54:24.33 3.0 negative manual Pn -0.07 0
IV.SALO.HHZ. 2021-09-03T21:54:21.20 3.0 undecidable manual Pn 0.4 0
OT.OT12.EHZ. 2021-09-03T21:54:18.67 3.0 positive manual Pg 7.34 0
IV.IMOL.HNZ. 2021-09-03T21:54:02.74 3.0 negative manual Pg 2.89 0
IV.CAFI.HHZ. 2021-09-03T21:53:58.53 3.0 undecidable manual S -1.61 0
IV.FAGN.HHZ. 2021-09-03T21:53:57.38 3.0 undecidable manual S -1.19 0
IV.PP3.EHZ. 2021-09-03T21:53:53.19 3.0 undecidable manual S -1.43 0
IV.RMP.HHZ. 2021-09-03T21:53:52.52 3.0 positive manual P 0.74 0
IV.CSP1.EHZ. 2021-09-03T21:53:41.26 0.6 undecidable manual S 47 0.2851 50 0.16 49
IV.MMO1.EHZ. 2021-09-03T21:53:41.56 0.3 undecidable manual S 89 0.2968 50 0.11 74
IV.MML1.EHZ. 2021-09-03T21:53:39.21 0.6 undecidable manual S 10 0.2203 50 0.02 51
IV.ASSB.HHZ. 2021-09-03T21:53:39.47 0.6 undecidable manual S 307 0.2419 50 -0.35 47
IV.ATCC.EHZ. 2021-09-03T21:53:38.06 0.3 undecidable manual P 325 0.3543 50 0.39 69
IV.GAVE.EHZ. 2021-09-03T21:53:38.63 0.6 undecidable manual S 186 0.205 50 -0.1 50
IV.NRCA.HHZ. 2021-09-03T21:53:37.04 0.6 undecidable manual S 114 0.1547 122 -0.17 50
IV.FDMO.HHZ. 2021-09-03T21:53:37.90 0.6 undecidable manual S 41 0.1853 50 -0.25 49
IV.CSP1.EHZ. 2021-09-03T21:53:36.48 0.3 undecidable manual P 47 0.2851 50 0 76
IV.MOMA.HNE. 2021-09-03T21:53:36.46 0.3 undecidable manual P 250 0.2734 50 0.17 73
IV.MMO1.EHZ. 2021-09-03T21:53:36.65 0.3 undecidable manual P 89 0.2968 50 -0.03 75
IV.FEMA.HNZ. 2021-09-03T21:53:36.03 0.6 undecidable manual S 55 0.1142 131 0.06 51
IV.LNSS.HNZ. 2021-09-03T21:53:36.73 0.3 undecidable manual P 163 0.3058 50 -0.11 74
IV.GAVE.EHZ. 2021-09-03T21:53:35.07 0.3 undecidable manual P 186 0.205 50 -0.04 76
IV.CESI.HHZ. 2021-09-03T21:53:35.77 0.6 undecidable manual S 353 0.1097 132 -0.05 52
IV.MML1.EHZ. 2021-09-03T21:53:35.34 0.3 undecidable manual P 10 0.2203 50 -0.03 76
IV.MC2.EHZ. 2021-09-03T21:53:35.18 0.3 undecidable manual P 85 0.1961 50 0.21 74
IT.MTCL.HGZ. 2021-09-03T21:53:35.65 0.3 undecidable manual S 30 0.1133 131 -0.28 74
IV.ASSB.HHZ. 2021-09-03T21:53:35.55 0.3 undecidable manual P 307 0.2419 50 -0.19 73
IV.NRCA.HHZ. 2021-09-03T21:53:34.23 0.3 undecidable manual P 114 0.1547 122 -0.01 77
IV.FDMO.HHZ. 2021-09-03T21:53:34.66 0.3 undecidable manual P 41 0.1853 50 -0.12 75
IT.MTCL.HGZ. 2021-09-03T21:53:33.50 0.3 undecidable manual P 30 0.1133 131 0.01 78
IV.CESI.HHZ. 2021-09-03T21:53:33.63 0.1 undecidable manual P 353 0.1097 132 0.2 100
IV.FEMA.HNZ. 2021-09-03T21:53:33.69 0.3 undecidable manual P 55 0.1142 131 0.17 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.1 0.0001407 0.08 AML other m 2021-09-03T21:53:35.94
IV.CESI.HHE. ML:0.8 7.708898E-5 0.128 AML other m 2021-09-03T21:53:36.28
IV.NRCA.HHE. ML:0.7 4.445E-5 0.12 AML other m 2021-09-03T21:53:38.26
IV.NRCA.HHN. ML:0.6 3.53E-5 1.1 AML other m 2021-09-03T21:53:38.22
IV.GAVE.EHE. ML:0.8 4.185E-5 0.24 AML other m 2021-09-03T21:53:39.13
IV.MML1.EHN. ML:0.8 3.325E-5 0.16 AML other m 2021-09-03T21:53:39.38
IV.MML1.EHE. ML:1.1 7.83E-5 0.2 AML other m 2021-09-03T21:53:39.46
IV.GAVE.EHN. ML:0.8 4.645E-5 0.2 AML other m 2021-09-03T21:53:39.56
IV.ASSB.HHE. ML:0.6 1.95165965E-5 0.1536 AML other m 2021-09-03T21:53:39.69
IV.ASSB.HHN. ML:0.4 1.546126E-5 0.1408 AML other m 2021-09-03T21:53:40.55
IV.CESI.HNN. ML:1.1 0.0001489982 0.1024 AML other m 2021-09-03T21:53:35.95
IV.CSP1.EHE. ML:1 3.8070844E-5 0.192 AML other m 2021-09-03T21:53:42.54
IV.CSP1.EHN. ML:1 3.76047605E-5 0.1792 AML other m 2021-09-03T21:53:41.89
IV.ATCC.EHE. ML:0.5 1.0024098E-5 0.2048 AML other m 2021-09-03T21:53:43.53
IV.ATCC.EHN. ML:0.5 1.1385093E-5 0.2944 AML other m 2021-09-03T21:53:43.68
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