Earthquake with magnitude of ML 1.0 on date 21-10-2020 and time 07:17:26 (Italy) in region 5 km E Sefro (MC)

A magnitude ML 1.0 earthquake occured in region: 5 km E Sefro (MC), on

  • 21-10-2020 05:17:26 (UTC)
  • 21-10-2020 07:17:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.13, 13.01 at 13 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
Sefro MC 5 422 422
Camerino MC 5 6974 7396
Pioraco MC 5 1134 8530
Muccia MC 6 915 9445
Serravalle di Chienti MC 8 1070 10515
Fiuminata MC 9 1402 11917
Castelraimondo MC 10 4587 16504
Pievebovigliana MC 10 866 17370
Pieve Torina MC 10 1458 18828
Fiordimonte MC 13 202 19030
Gagliole MC 13 620 19650
Matelica MC 14 9981 29631
Esanatoglia MC 14 2034 31665
Monte Cavallo MC 15 145 31810
Serrapetrona MC 16 966 32776
Fiastra MC 16 559 33335
Nocera Umbra PG 18 5839 39174
San Severino Marche MC 18 12726 51900
Acquacanina MC 18 121 52021
Caldarola MC 18 1823 53844
Belforte del Chienti MC 19 1886 55730

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NE of Foligno (57155 inhabitants)
50 Km E of Perugia (166134 inhabitants)
68 Km SW of Ancona (100861 inhabitants)
70 Km NE of Terni (111501 inhabitants)
78 Km NW of Teramo (54892 inhabitants)
79 Km S of Fano (60888 inhabitants)
87 Km S of Pesaro (94582 inhabitants)
93 Km NW of L'Aquila (69753 inhabitants)
98 Km E of Arezzo (99543 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 1.0 2020-10-21
05:17:26
43.13 13.01 13 2020-10-21
05:21:53
Sala Sismica INGV-Roma 83978321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-21 05:17:26 ± 0.06
Latitude 43.13 ± 0.00
Longitude 13.01 ± 0.00
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83978321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 378
Semi-minor axis of confidence ellipse (meter) 68
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 81
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2698
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 83978321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-21 05:21:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SNTG.HHZ. 2020-10-21T05:17:33.24 0.3 undecidable manual S 339 0.1313 117 -0.07 74
IV.NRCA.HHZ. 2020-10-21T05:17:33.41 0.6 negative manual P -0.09 0.84
IV.CSP1.EHZ. 2020-10-21T05:17:33.86 0.3 undecidable manual S 106 0.1502 111 0.02 75
IV.CESI.HHZ. 2020-10-21T05:17:33.85 0.3 undecidable manual S 210 0.1484 112 0.08 75
IV.FDMO.HHZ. 2020-10-21T05:17:32.69 0.3 undecidable manual S 149 0.1133 123 -0.16 73
IV.MC2.EHZ. 2020-10-21T05:17:32.71 0.6 positive manual P 149 0.259 97 0.04 49
IV.ASSB.HHZ. 2020-10-21T05:17:32.78 0.3 undecidable manual P 251 0.2698 97 -0.07 72
IV.EL6.EHZ. 2020-10-21T05:17:31.91 1.0 negative manual P 19 0.2077 101 0.1 24
IV.CESI.HHZ. 2020-10-21T05:17:30.94 0.1 positive manual P 210 0.1484 112 0.11 99
IV.FDMO.HHZ. 2020-10-21T05:17:30.15 1.0 undecidable manual P 149 0.1133 123 -0.14 25
IV.SNTG.HHZ. 2020-10-21T05:17:30.63 0.1 positive manual P 339 0.1313 117 0.07 100
IV.CSP1.EHZ. 2020-10-21T05:17:30.94 0.6 negative manual P 106 0.1502 111 0.07 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SNTG.HHN. ML:0.8 5.395E-5 0.28 AML other m 2020-10-21T05:17:33.45
IV.SNTG.HHE. ML:0.8 5.765E-5 0.1 AML other m 2020-10-21T05:17:33.37
IV.CESI.HHN. ML:1.3 0.000143 0.14 AML other m 2020-10-21T05:17:33.99
IV.CESI.HHE. ML:1.2 0.00012755 0.08 AML other m 2020-10-21T05:17:34.00
IV.CSP1.EHN. ML:1.5 0.000234 0.82 AML other m 2020-10-21T05:17:34.19
IV.CSP1.EHE. ML:1.4 0.000184 0.66 AML other m 2020-10-21T05:17:34.40
IV.NRCA.HHN. ML:0.9 3.475E-5 0.38 AML other m 2020-10-21T05:17:39.12
IV.NRCA.HHE. ML:0.8 2.64E-5 0.82 AML other m 2020-10-21T05:17:40.58
IV.FDMO.HHE. ML:0.4 2.5081215E-5 0.1216 AML other m 2020-10-21T05:17:33.01
IV.FDMO.HHN. ML:0.5 3.0869695E-5 0.1184 AML other m 2020-10-21T05:17:34.59
IV.CESI.HNE. ML:1.2 0.00013774189 0.16 AML other m 2020-10-21T05:17:34.08
IV.CESI.HNN. ML:1.3 0.0001743694 0.1408 AML other m 2020-10-21T05:17:33.99
IV.EL6.EHE. ML:0.9 5.2393245E-5 0.1024 AML other m 2020-10-21T05:17:36.29
IV.EL6.EHN. ML:0.8 4.1376735E-5 0.0992 AML other m 2020-10-21T05:17:36.53
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