Earthquake with magnitude of ML 1.2 on date 20-09-2020 and time 05:36:00 (UTC) in region 5 km SE Cerreto di Spoleto (PG)

A magnitude ML 1.2 earthquake occured in region: 5 km SE Cerreto di Spoleto (PG), on

  • 20-09-2020 05:36:00 (UTC)
  • 20-09-2020 07:36:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.79, 12.96 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
Cerreto di Spoleto PG 5 1075 1075
Vallo di Nera PG 8 364 1439
Poggiodomo PG 8 117 1556
Cascia PG 9 3217 4773
Norcia PG 11 4957 9730
Sant'Anatolia di Narco PG 11 564 10294
Sellano PG 12 1079 11373
Preci PG 13 724 12097
Scheggino PG 13 461 12558
Monteleone di Spoleto PG 15 599 13157
Campello sul Clitunno PG 15 2442 15599
Spoleto PG 19 38218 53817
Visso MC 20 1107 54924
Trevi PG 20 8469 63393

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km SE of Foligno (57155 inhabitants)
35 Km NE of Terni (111501 inhabitants)
58 Km SE of Perugia (166134 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
63 Km W of Teramo (54892 inhabitants)
81 Km NE of Viterbo (67173 inhabitants)
89 Km N of Guidonia Montecelio (88673 inhabitants)
92 Km N of Tivoli (56533 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 2020-09-20
05:36:00
42.79 12.96 10 2020-09-20
05:53:47
Sala Sismica INGV-Roma 83045391
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-20 05:36:00 ± 0.04
Latitude 42.79 ± 0.00
Longitude 12.96 ± 0.00
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 83045391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 288
Semi-minor axis of confidence ellipse (meter) 174
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 102
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.46855
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 83045391
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-20 05:53:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATMI.HHZ. 2020-09-20T05:36:22.68 3.0 undecidable manual S -3.87 0
IV.SNTG.HHZ. 2020-09-20T05:36:17.11 0.3 undecidable manual S 359 0.4685 50 0.39 66
IV.ATCC.EHZ. 2020-09-20T05:36:16.90 0.6 undecidable manual S 330 0.4605 50 0.42 44
IV.CAMP.HHZ. 2020-09-20T05:36:15.83 3.0 undecidable manual S -0.07 0
IV.MURB.HNZ. 2020-09-20T05:36:13.01 3.0 undecidable manual P 1.25 0
IV.CSP1.EHZ. 2020-09-20T05:36:13.50 0.6 undecidable manual S 31 0.3561 50 0.13 48
IV.ASSB.HHZ. 2020-09-20T05:36:12.56 0.6 undecidable manual S 320 0.3363 50 -0.23 47
IV.RM33.EHZ. 2020-09-20T05:36:12.95 0.6 undecidable manual S 145 0.3363 50 0.17 47
IV.MMO1.EHZ. 2020-09-20T05:36:11.33 0.6 undecidable manual S 67 0.295 50 -0.23 47
IV.EL6.EHZ. 2020-09-20T05:36:11.16 3.0 undecidable manual P -0.25 0
IV.ARRO.EHZ. 2020-09-20T05:36:10.17 0.6 undecidable manual S 214 0.2491 50 -0.05 49
IV.FDMO.HHZ. 2020-09-20T05:36:10.62 0.6 undecidable manual S 21 0.268 50 -0.16 48
IV.CESI.HHZ. 2020-09-20T05:36:09.15 0.6 undecidable manual S 350 0.2221 112 -0.19 48
IV.ATCC.EHZ. 2020-09-20T05:36:09.55 0.3 positive manual P 330 0.4605 50 -0.01 72
IV.MC2.EHZ. 2020-09-20T05:36:09.10 0.6 undecidable manual S 54 0.2122 113 0.12 49
IV.SNTG.HHZ. 2020-09-20T05:36:09.60 0.1 undecidable manual P 359 0.4685 50 -0.1 94
IV.GUMA.HHZ. 2020-09-20T05:36:08.72 3.0 undecidable manual P 0.27 0
IV.LNSS.HHZ. 2020-09-20T05:36:08.13 0.6 undecidable manual S 161 0.1934 115 -0.2 49
IV.CSP1.EHZ. 2020-09-20T05:36:07.72 0.3 positive manual P 31 0.3561 50 -0.05 73
IV.ASSB.HHZ. 2020-09-20T05:36:07.29 0.6 negative manual P 320 0.3363 50 -0.14 48
IV.RM33.EHZ. 2020-09-20T05:36:07.47 0.6 negative manual P 145 0.3363 50 0.04 49
IV.FDMO.HHZ. 2020-09-20T05:36:06.10 0.1 undecidable manual P 21 0.268 50 -0.17 96
IV.MMO1.EHZ. 2020-09-20T05:36:06.63 0.3 positive manual P 67 0.295 50 -0.09 73
IV.GAVE.EHZ. 2020-09-20T05:36:05.40 0.6 undecidable manual S 206 0.1043 131 -0.01 51
IV.CESI.HHZ. 2020-09-20T05:36:05.42 0.1 positive manual P 350 0.2221 112 -0.02 100
IV.NRCA.HHZ. 2020-09-20T05:36:05.97 0.6 undecidable manual S 68 0.1259 125 -0.09 50
IV.MC2.EHZ. 2020-09-20T05:36:05.42 0.6 negative manual P 54 0.2122 113 0.18 48
IV.ARRO.EHZ. 2020-09-20T05:36:05.95 0.6 undecidable manual P 214 0.2491 50 0 50
IV.LNSS.HHZ. 2020-09-20T05:36:04.93 0.1 positive manual P 161 0.1934 115 0.07 100
IV.GAVE.EHZ. 2020-09-20T05:36:03.45 1.0 negative manual P 206 0.1043 131 0.28 24
IV.NRCA.HHZ. 2020-09-20T05:36:03.67 0.1 positive manual P 68 0.1259 125 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.EHE. ML:1.5 0.000396 0.2 AML other m 2020-09-20T05:36:05.85
IV.GAVE.EHN. ML:1.6 0.000442 1.46 AML other m 2020-09-20T05:36:06.74
IV.NRCA.HHE. ML:1.5 0.000322 0.14 AML other m 2020-09-20T05:36:06.22
IV.NRCA.HHN. ML:1.3 0.000206 0.08 AML other m 2020-09-20T05:36:06.21
IV.LNSS.HHE. ML:1.4 0.000169 0.34 AML other m 2020-09-20T05:36:08.66
IV.CESI.HHE. ML:1 5.38E-5 0.4 AML other m 2020-09-20T05:36:09.49
IV.LNSS.HHN. ML:1.2 0.0001096 0.24 AML other m 2020-09-20T05:36:09.90
IV.CESI.HHN. ML:1.1 7.3E-5 1.74 AML other m 2020-09-20T05:36:09.00
IV.FDMO.HHE. ML:1.2 8.695E-5 1.72 AML other m 2020-09-20T05:36:10.11
IV.ARRO.EHN. ML:0.9 3.83E-5 1.84 AML other m 2020-09-20T05:36:10.05
IV.FDMO.HHN. ML:1 4.615E-5 0.38 AML other m 2020-09-20T05:36:10.79
IV.ARRO.EHE. ML:0.8 3.435E-5 0.18 AML other m 2020-09-20T05:36:11.83
IV.ASSB.HHN. ML:1.3 7.44E-5 1.68 AML other m 2020-09-20T05:36:12.94
IV.ASSB.HHE. ML:1.2 5.775E-5 0.68 AML other m 2020-09-20T05:36:13.02
IV.RM33.EHE. ML:1 3.99E-5 1.44 AML other m 2020-09-20T05:36:13.24
IV.RM33.EHN. ML:1 3.615E-5 0.42 AML other m 2020-09-20T05:36:14.21
IV.CSP1.EHN. ML:1.4 8.215E-5 0.42 AML other m 2020-09-20T05:36:16.63
IV.CSP1.EHE. ML:1.2 5.64E-5 1.32 AML other m 2020-09-20T05:36:16.07
IV.ATCC.EHE. ML:1.3 4.85E-5 0.12 AML other m 2020-09-20T05:36:17.36
IV.ATCC.EHN. ML:1.1 3.01E-5 0.96 AML other m 2020-09-20T05:36:17.57
IV.SNTG.HHN. ML:0.8 1.68E-5 1.12 AML other m 2020-09-20T05:36:18.78
IV.SNTG.HHE. ML:0.8 1.52E-5 0.64 AML other m 2020-09-20T05:36:18.50
IV.MURB.HHE. ML:1.6 8.025E-5 0.08 AML other m 2020-09-20T05:36:38.80
IV.MURB.HHN. ML:1.5 6.235E-5 0.18 AML other m 2020-09-20T05:36:38.88
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download