Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 06-10-2021 and time 18:55:43 (UTC) in region 4 km SW Sassoferrato (AN)

A magnitude ML 0.6 earthquake occured in region: 4 km SW Sassoferrato (AN), on

  • 06-10-2021 18:55:43 (UTC)
  • 06-10-2021 20:55:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4090, 12.8200 at 15 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 5 7285 7285
Genga AN 10 1797 9082
Serra Sant'Abbondio PU 10 1027 10109
Costacciaro PG 10 1216 11325
Fabriano AN 11 31480 42805
Sigillo PG 11 2404 45209
Scheggia e Pascelupo PG 12 1393 46602
Fossato di Vico PG 13 2840 49442
Frontone PU 14 1300 50742
Arcevia AN 14 4612 55354
Serra San Quirico AN 16 2850 58204
Cerreto d'Esi AN 17 3817 62021
Cantiano PU 17 2245 64266
Pergola PU 17 6333 70599
Mergo AN 19 1037 71636
Gualdo Tadino PG 20 15208 86844

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km NE of Perugia (166134 inhabitants)
51 Km N of Foligno (57155 inhabitants)
51 Km SW of Fano (60888 inhabitants)
56 Km S of Pesaro (94582 inhabitants)
61 Km W of Ancona (100861 inhabitants)
75 Km S of Rimini (147750 inhabitants)
76 Km E of Arezzo (99543 inhabitants)
93 Km SE of Cesena (96758 inhabitants)
95 Km N of Terni (111501 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 2021-10-06
18:55:43		 43.4088 12.8197 15 2021-10-06
19:44:44		 Sala Sismica INGV-Roma 96298031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-06 18:55:43 ± 0.12
Latitude 43.4088 ± 0.0036
Longitude 12.8197 ± 0.0050
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96298031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 450
Semi-minor axis of confidence ellipse (meter) 54
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 19
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.26620
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 12
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 96298031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-06 19:44:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2021-10-06T18:55:54.15 0.3 undecidable manual S 319 29.5482 104 0.15 72
IV.MPAG.EHZ. 2021-10-06T18:55:53.06 0.6 undecidable manual S 349 24.9528 108 0.25 47
IV.PIEI.HHZ. 2021-10-06T18:55:53.16 0.3 undecidable manual S 302 26.8509 106 -0.16 70
IV.EL6.EHZ. 2021-10-06T18:55:52.94 0.3 undecidable manual S 111 24.3534 108 0.26 70
IV.ATBU.EHZ. 2021-10-06T18:55:52.93 0.3 undecidable manual S 289 23.0547 110 0.58 66
IV.ATFO.HHN. 2021-10-06T18:55:51.82 0.3 undecidable manual S 257 20.5683 113 0.11 74
IV.SNTG.HHZ. 2021-10-06T18:55:51.46 0.3 undecidable manual S 150 19.6692 115 -0.04 74
IV.FRON.EHZ. 2021-10-06T18:55:50.17 0.3 undecidable manual S 328 14.2746 126 -0.08 73
IV.ARVD.HHZ. 2021-10-06T18:55:50.08 0.3 undecidable manual S 45 13.9749 127 -0.11 73
IV.PIEI.HHZ. 2021-10-06T18:55:49.00 0.1 undecidable manual P 302 26.8509 106 -0.18 94
IV.NARO.HHZ. 2021-10-06T18:55:49.47 0.1 undecidable manual P 319 29.5482 104 -0.1 95
IV.EL6.EHZ. 2021-10-06T18:55:49.15 0.3 undecidable manual P 111 24.3534 108 0.34 69
IV.ATCC.EHZ. 2021-10-06T18:55:49.49 0.3 undecidable manual P 210 28.749 104 0.04 73
IV.FOSV.EHZ. 2021-10-06T18:55:49.88 0.3 undecidable manual S 200 13.4754 129 -0.21 72
IV.ATSC.EHE. 2021-10-06T18:55:49.33 0.3 undecidable manual S 279 10.878 136 -0.25 71
IV.ATBU.EHZ. 2021-10-06T18:55:48.76 0.1 undecidable manual P 289 23.0547 110 0.14 97
IV.MPAG.EHZ. 2021-10-06T18:55:48.23 0.3 undecidable manual P 349 24.9528 108 -0.66 61
IV.ATFO.HHN. 2021-10-06T18:55:48.68 0.6 undecidable manual P 257 20.5683 113 0.43 46
IV.SNTG.HHZ. 2021-10-06T18:55:48.00 0.1 undecidable manual P 150 19.6692 115 -0.13 97
IV.FOSV.EHZ. 2021-10-06T18:55:47.21 0.1 undecidable manual P 200 13.4754 129 -0.11 98
IV.FRON.EHZ. 2021-10-06T18:55:47.42 0.1 undecidable manual P 328 14.2746 126 0.01 99
IV.ARVD.HHZ. 2021-10-06T18:55:47.43 0.1 undecidable manual P 45 13.9749 127 0.06 100
IV.ATSC.EHE. 2021-10-06T18:55:46.98 0.1 undecidable manual P 279 10.878 136 -0.04 99
IV.COR1.EHZ. 2021-10-06T18:55:46.73 3.0 negative manual P -0.25 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHE. ML:0.5 0.000026572795 0.0768 AML other m 2021-10-06T18:55:50.16
IV.FOSV.EHN. ML:0.6 0.000032595255000000006 0.1408 AML other m 2021-10-06T18:55:50.18
IV.FRON.EHE. ML:0.9 0.000065675225 0.1792 AML other m 2021-10-06T18:55:50.28
IV.FRON.EHN. ML:1.0 0.00008722009999999999 0.1408 AML other m 2021-10-06T18:55:50.44
IV.ARVD.HHE. ML:0.6 0.0000303173 0.1024 AML other m 2021-10-06T18:55:50.34
IV.ARVD.HHN. ML:0.5 0.000024287734999999997 0.0768 AML other m 2021-10-06T18:55:50.39
IV.SNTG.HHE. ML:0.5 0.000018038776999999998 0.0768 AML other m 2021-10-06T18:55:52.35
IV.SNTG.HHN. ML:0.7 0.000037377234999999994 0.1408 AML other m 2021-10-06T18:55:51.60
IV.SNTG.HNE. ML:0.5 0.000019291100000000006 0.0896 AML other m 2021-10-06T18:55:51.72
IV.SNTG.HNN. ML:0.7 0.000031050235000000005 0.1152 AML other m 2021-10-06T18:55:51.53
IV.PIEI.HHE. ML:0.5 0.0000157938595 0.0768 AML other m 2021-10-06T18:55:53.57
IV.PIEI.HHN. ML:0.3 0.000009365975 0.0768 AML other m 2021-10-06T18:55:53.35
IV.NARO.HHE. ML:0.5 0.000016619160000000002 0.064 AML other m 2021-10-06T18:55:54.76
IV.NARO.HHN. ML:0.3 0.000012277942999999999 0.064 AML other m 2021-10-06T18:55:54.66
IV.ATCC.EHE. ML:0.5 0.000016586984999999998 0.1024 AML other m 2021-10-06T18:55:55.74
IV.ATCC.EHN. ML:0.5 0.0000131023957 0.128 AML other m 2021-10-06T18:55:54.60
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