Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 17-10-2020 and time 21:28:19 (Italy) in region 6 km SW Sassoferrato (AN)

A magnitude ML 0.6 earthquake occured in region: 6 km SW Sassoferrato (AN), on

  • 17-10-2020 19:28:19 (UTC)
  • 17-10-2020 21:28:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3850, 12.8340 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sassoferrato AN 6 7285 7285
Fabriano AN 8 31480 38765
Sigillo PG 10 2404 41169
Genga AN 10 1797 42966
Costacciaro PG 10 1216 44182
Fossato di Vico PG 12 2840 47022
Serra Sant'Abbondio PU 13 1027 48049
Scheggia e Pascelupo PG 14 1393 49442
Cerreto d'Esi AN 14 3817 53259
Arcevia AN 16 4612 57871
Serra San Quirico AN 16 2850 60721
Frontone PU 16 1300 62021
Esanatoglia MC 17 2034 64055
Gualdo Tadino PG 18 15208 79263
Mergo AN 19 1037 80300
Cantiano PU 19 2245 82545
Poggio San Vicino MC 20 246 82791
Pergola PU 20 6333 89124

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km NE of Perugia (166134 inhabitants)
49 Km N of Foligno (57155 inhabitants)
53 Km S of Fano (60888 inhabitants)
59 Km S of Pesaro (94582 inhabitants)
61 Km W of Ancona (100861 inhabitants)
77 Km E of Arezzo (99543 inhabitants)
78 Km S of Rimini (147750 inhabitants)
93 Km N of Terni (111501 inhabitants)
96 Km SE of Cesena (96758 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 0.6 2020-10-17
19:28:19		 43.3848 12.8345 13 2020-10-17
19:35:34		 Sala Sismica INGV-Roma 83855961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-17 19:28:19 ± 0.04
Latitude 43.3848 ± 0.0018
Longitude 12.8345 ± 0.0025
Depth (km) 13 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83855961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 214
Semi-minor axis of confidence ellipse (meter) 142
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 288
Circular confidence region, given by single value of horizontal uncertainty (meter) 210.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.06
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.29138
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 83855961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-17 19:35:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HNZ. 2020-10-17T19:28:37.82 3.0 undecidable manual S -0.13 0
IV.NARO.HHZ. 2020-10-17T19:28:30.47 0.6 undecidable manual S 321 32.3454 96 0.12 47
IV.ATCC.EHZ. 2020-10-17T19:28:28.82 0.6 undecidable manual S 215 27.1506 98 -0.16 47
IV.ATFO.HHZ. 2020-10-17T19:28:27.48 0.6 undecidable manual S 265 21.2676 103 0.04 49
IV.SNTG.HHZ. 2020-10-17T19:28:26.40 0.6 undecidable manual S 149 16.7721 111 0.12 49
IV.FRON.EHZ. 2020-10-17T19:28:26.37 0.6 undecidable manual S 329 17.1717 111 -0.01 50
IV.ARVD.HHZ. 2020-10-17T19:28:25.80 0.6 undecidable manual S 34 15.2736 115 -0.11 49
IV.NARO.HHZ. 2020-10-17T19:28:25.56 0.6 undecidable manual P 321 32.3454 96 -0.08 48
IV.ATFO.HHZ. 2020-10-17T19:28:24.02 0.6 negative manual P 265 21.2676 103 0.05 49
IV.ATCC.EHZ. 2020-10-17T19:28:24.90 1.0 negative manual P 215 27.1506 98 0.04 24
IV.SSFR.HHZ. 2020-10-17T19:28:24.25 0.3 undecidable manual S 324 7.0929 144 0.03 76
IV.FRON.EHZ. 2020-10-17T19:28:23.36 0.3 positive manual P 329 17.1717 111 0 75
IV.ARVD.HHZ. 2020-10-17T19:28:23.08 0.1 undecidable manual P 34 15.2736 115 0 100
IV.SNTG.HHZ. 2020-10-17T19:28:23.24 0.6 positive manual P 149 16.7721 111 -0.06 50
IV.SSFR.HHZ. 2020-10-17T19:28:22.20 1.0 undecidable manual P 324 7.0929 144 0.09 25
IV.FOSV.EHZ. 2020-10-17T19:28:20.62 3.0 undecidable manual P -2.36 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSFR.HHE. ML:0.8 0.00007875 0.7 AML other m 2020-10-17T19:28:24.42
IV.SSFR.HHN. ML:0.7 0.0000634 0.84 AML other m 2020-10-17T19:28:24.56
IV.NARO.HHN. ML:0.4 0.00001031 0.42 AML other m 2020-10-17T19:28:31.54
IV.NARO.HHE. ML:0.4 0.00000974 1.58 AML other m 2020-10-17T19:28:39.90
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