Earthquake with magnitude of ML 0.9 on date 06-10-2021 and time 16:54:12 (Italy) in region 1 km SE Cerreto di Spoleto (PG)

A magnitude ML 0.9 earthquake occured in region: 1 km SE Cerreto di Spoleto (PG), on

  • 06-10-2021 14:54:12 (UTC)
  • 06-10-2021 16:54:12 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.815, 12.929 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
Cerreto di Spoleto PG 1 1075 1075
Vallo di Nera PG 7 364 1439
Sellano PG 8 1079 2518
Poggiodomo PG 11 117 2635
Preci PG 12 724 3359
Sant'Anatolia di Narco PG 12 564 3923
Campello sul Clitunno PG 12 2442 6365
Cascia PG 13 3217 9582
Norcia PG 14 4957 14539
Scheggino PG 14 461 15000
Trevi PG 16 8469 23469
Spoleto PG 18 38218 61687
Monteleone di Spoleto PG 18 599 62286
Visso MC 18 1107 63393

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km SE of Foligno (57155 inhabitants)
36 Km NE of Terni (111501 inhabitants)
55 Km SE of Perugia (166134 inhabitants)
64 Km NW of L'Aquila (69753 inhabitants)
66 Km W of Teramo (54892 inhabitants)
81 Km NE of Viterbo (67173 inhabitants)
92 Km N of Guidonia Montecelio (88673 inhabitants)
95 Km N of Tivoli (56533 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 2021-10-06
14:54:12
42.8153 12.9287 11 2021-10-06
15:05:06
Sala Sismica INGV-Roma 96294071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-06 14:54:12 ± 0.07
Latitude 42.8153 ± 0.0036
Longitude 12.9287 ± 0.0061
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 96294071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 439
Semi-minor axis of confidence ellipse (meter) 320
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 115
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 22
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
Epicentral distance of station farthest from the epicenter (degree) 0.30127
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 96294071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-06 15:05:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SELL.HHZ. 2021-10-06T14:56:35.71 3.0 undecidable manual Sg 21.77 0
IV.MONC.HHZ. 2021-10-06T14:56:31.11 3.0 undecidable manual Sg 25.719999 0
AC.VLO.HHZ. 2021-10-06T14:56:27.96 3.0 undecidable manual Sn -4.15 0
IV.SCTE.HHZ. 2021-10-06T14:56:18.46 3.0 undecidable manual Sn -1.94 0
ST.CARE.HNZ. 2021-10-06T14:55:59.12 3.0 undecidable manual Sn 0.74 0
OX.MARN.HNZ. 2021-10-06T14:55:51.08 3.0 undecidable manual Sg 13.85 0
IV.EPOZ.HHZ. 2021-10-06T14:55:45.67 3.0 undecidable manual Pg 16.459999 0
IV.MBAL.EHZ. 2021-10-06T14:55:41.64 3.0 undecidable manual Sn 0.49 0
ST.DOSS.HHZ. 2021-10-06T14:55:37.98 3.0 undecidable manual Sn -4.86 0
IV.SPS2.HHZ. 2021-10-06T14:55:29.22 3.0 positive manual Pg 14.35 0
GU.BURY.HHZ. 2021-10-06T14:55:27.29 3.0 undecidable manual Pg 15.35 0
ST.CARE.HNZ. 2021-10-06T14:55:25.41 3.0 positive manual Pg 14.05 0
IV.VOBA.EHZ. 2021-10-06T14:55:15.04 3.0 negative manual Pg 12.32 0
OX.MARN.HHZ. 2021-10-06T14:55:01.35 3.0 positive manual Pn 1.87 0
IV.FIR.HHZ. 2021-10-06T14:54:58.57 3.0 undecidable manual Sn -0.82 0
IT.FIE.HGZ. 2021-10-06T14:54:58.38 3.0 undecidable manual Sn -1.01 0
IV.ATMI.HHZ. 2021-10-06T14:54:38.82 3.0 undecidable manual S -0.21 0
IV.CSNT.HHZ. 2021-10-06T14:54:37.80 3.0 positive manual Pg 2.27 0
IV.VIVA.HHZ. 2021-10-06T14:54:29.21 3.0 negative manual P -0.29 0
IV.MML1.EHZ. 2021-10-06T14:54:24.00 0.3 undecidable manual S 6 0.2995 50 0.13 72
IV.ASSB.HHE. 2021-10-06T14:54:23.96 0.3 undecidable manual S 319 0.3013 50 0.05 73
IV.FDMO.HHZ. 2021-10-06T14:54:22.22 0.3 undecidable manual S 28 0.25 50 -0.17 72
IV.MOMA.HHZ. 2021-10-06T14:54:22.88 0.3 undecidable manual S 268 0.2635 50 0.09 73
IV.SRES.HHZ. 2021-10-06T14:54:22.45 3.0 negative manual P -0.68 0
IV.LNSS.HHZ. 2021-10-06T14:54:21.39 0.3 undecidable manual S 159 0.2275 50 -0.34 70
IV.MC2.EHZ. 2021-10-06T14:54:21.46 0.3 undecidable manual S 63 0.2131 50 0.15 73
IT.MTCL.HGE. 2021-10-06T14:54:20.11 0.3 undecidable manual S 16 0.1862 50 -0.38 70
IV.CESI.HHZ. 2021-10-06T14:54:20.70 0.3 undecidable manual S 355 0.1907 50 0.07 74
IV.FEMA.HNZ. 2021-10-06T14:54:19.98 0.3 undecidable manual S 31 0.1718 119 -0.05 75
IV.MML1.EHZ. 2021-10-06T14:54:19.13 0.3 undecidable manual P 6 0.2995 50 0.09 73
IV.MOMA.HHZ. 2021-10-06T14:54:18.18 1.0 undecidable manual P 268 0.2635 50 -0.24 24
IV.GAVE.EHZ. 2021-10-06T14:54:18.61 0.3 undecidable manual S 192 0.1259 128 0.05 76
IV.FDMO.HHZ. 2021-10-06T14:54:18.10 0.1 undecidable manual P 28 0.25 50 -0.09 98
IV.ASSB.HHE. 2021-10-06T14:54:18.23 1.0 undecidable manual P 319 0.3013 50 -0.84 19
IV.NRCA.HHZ. 2021-10-06T14:54:18.83 0.6 undecidable manual S 82 0.1376 125 -0.09 50
IV.MC2.EHZ. 2021-10-06T14:54:18.02 0.1 undecidable manual P 63 0.2131 50 0.45 91
IV.CESI.HHZ. 2021-10-06T14:54:17.28 0.3 undecidable manual P 355 0.1907 50 0.11 74
IV.LNSS.HHZ. 2021-10-06T14:54:17.81 0.1 undecidable manual P 159 0.2275 50 0 100
IT.MTCL.HGE. 2021-10-06T14:54:17.27 0.3 undecidable manual P 16 0.1862 50 0.17 73
IV.GAVE.EHZ. 2021-10-06T14:54:16.20 1.0 undecidable manual P 192 0.1259 128 0.22 24
IV.FEMA.HNZ. 2021-10-06T14:54:16.33 0.6 undecidable manual P 31 0.1718 119 -0.5 46
IV.NRCA.HHZ. 2021-10-06T14:54:16.29 0.1 undecidable manual P 82 0.1376 125 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.1 0.000107 0.08 AML other m 2021-10-06T14:54:19.12
IV.NRCA.HHN. ML:0.8 5.908126E-5 0.1024 AML other m 2021-10-06T14:54:21.22
IV.GAVE.EHE. ML:1.1 0.000120381495 0.1344 AML other m 2021-10-06T14:54:19.06
IV.GAVE.EHN. ML:1.2 0.0001539799 0.0768 AML other m 2021-10-06T14:54:19.14
IV.GAVE.HNE. ML:1.1 0.000113887345 0.0896 AML other m 2021-10-06T14:54:19.05
IV.GAVE.HNN. ML:1.2 0.0001704701 0.768 AML other m 2021-10-06T14:54:18.19
IV.NRCA.HNE. ML:1.1 0.0001060386 0.0896 AML other m 2021-10-06T14:54:19.11
IV.NRCA.HNN. ML:0.8 6.671682E-5 0.0704 AML other m 2021-10-06T14:54:19.25
IV.CESI.HHE. ML:0.6 2.53819715E-5 0.064 AML other m 2021-10-06T14:54:21.19
IV.CESI.HHN. ML:0.8 4.60987335E-5 0.1024 AML other m 2021-10-06T14:54:21.04
IV.FDMO.HHE. ML:0.9 3.8583375E-5 0.1792 AML other m 2021-10-06T14:54:22.68
IV.FDMO.HHN. ML:0.8 2.822116E-5 0.1216 AML other m 2021-10-06T14:54:22.53
IV.MML1.EHE. ML:0.7 2.1270445E-5 0.3008 AML other m 2021-10-06T14:54:24.35
IV.MML1.EHN. ML:0.7 2.122955E-5 0.1792 AML other m 2021-10-06T14:54:24.70
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