Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 08-11-2021 and time 14:06:09 (Italy) in region 7 km SW Apecchio (PU)

A magnitude ML 0.8 earthquake occured in region: 7 km SW Apecchio (PU), on

  • 08-11-2021 13:06:09 (UTC)
  • 08-11-2021 14:06:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.5000, 12.3930 at 8 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Apecchio PU 7 1882 1882
Pietralunga PG 7 2111 3993
Città di Castello PG 13 39913 43906
Piobbico PU 14 2029 45935
Montone PG 16 1680 47615
Mercatello sul Metauro PU 17 1378 48993
San Giustino PG 18 11297 60290
Sant'Angelo in Vado PU 19 4133 64423
Cantiano PU 19 2245 66668
Borgo Pace PU 19 606 67274
Monte Santa Maria Tiberina PG 20 1183 68457

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Arezzo (99543 inhabitants)
44 Km N of Perugia (166134 inhabitants)
62 Km SW of Pesaro (94582 inhabitants)
63 Km SW of Fano (60888 inhabitants)
64 Km S of Rimini (147750 inhabitants)
66 Km NW of Foligno (57155 inhabitants)
72 Km S of Cesena (96758 inhabitants)
85 Km SE of Forlì (117913 inhabitants)
88 Km E of Siena (53903 inhabitants)
92 Km W of Ancona (100861 inhabitants)
96 Km E of Firenze (382808 inhabitants)
97 Km SE of Faenza (58541 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
Bulletin
Rev1000 		ML 0.8 2021-11-08
13:06:09		 43.4997 12.3927 8 2022-03-30
13:04:17		 Bollettino Sismico Italiano INGV 97747031
Reviewed
Rev100 		ML 0.8 2021-11-08
13:06:09		 43.498 12.3967 8 2021-11-08
13:13:27		 Sala Sismica INGV-Roma 97341691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-08 13:06:09 ± 0.08
Latitude 43.4997 ± 0.0018
Longitude 12.3927 ± 0.0037
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97747031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 259
Semi-minor axis of confidence ellipse (meter) 53
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 260
Circular confidence region, given by single value of horizontal uncertainty (meter) 260.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.18616
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 97747031
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-24 10:16:00

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 97341691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-08 13:13:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTRA.EHZ. 2021-11-08T13:06:19.54 3.0 undecidable manual Pn -0.04 0
IV.PARC.HHZ. 2021-11-08T13:06:17.64 0.3 undecidable manual S 323 20.6682 111 0.3 69
IV.NARO.HHZ. 2021-11-08T13:06:16.96 0.3 undecidable manual S 51 19.4694 112 -0.02 74
IV.TB01.DHZ.01 2021-11-08T13:06:15.15 0.1 undecidable manual S 165 13.5753 121 0.03 99
IV.TB02.DHZ.01 2021-11-08T13:06:15.42 0.1 undecidable manual S 175 14.3745 119 0.04 99
IV.TB03.DHZ.01 2021-11-08T13:06:14.33 0.1 undecidable manual S 173 10.9779 126 -0.06 99
IV.BADI.EHZ. 2021-11-08T13:06:14.64 0.1 undecidable manual S 275 11.9769 124 -0.02 99
IV.PARC.HHZ. 2021-11-08T13:06:14.03 0.1 undecidable manual P 323 20.6682 111 -0.06 97
IV.ATVO.HHZ. 2021-11-08T13:06:14.97 0.1 undecidable manual S 175 13.0758 122 -0.02 99
IV.APEC.HHZ. 2021-11-08T13:06:13.26 0.1 undecidable manual S 19 6.8931 139 -0.07 99
IV.NARO.HHZ. 2021-11-08T13:06:13.56 0.1 undecidable manual P 51 19.4694 112 -0.32 92
IV.ATBU.EHZ. 2021-11-08T13:06:13.02 0.1 undecidable manual P 102 12.7761 122 0.34 93
IV.ATPC.HHE. 2021-11-08T13:06:13.20 0.1 undecidable manual S 112 5.5944 145 0.14 98
IV.TB02.DHZ.01 2021-11-08T13:06:12.99 0.1 undecidable manual P 175 14.3745 119 0.03 99
IV.TB03.DHZ.01 2021-11-08T13:06:12.37 0.1 undecidable manual P 173 10.9779 126 -0.01 100
IV.BADI.EHZ. 2021-11-08T13:06:12.54 0.1 undecidable manual P 275 11.9769 124 -0.01 100
IV.ATPI.EHZ. 2021-11-08T13:06:12.90 0.1 undecidable manual S 172 5.4945 146 -0.14 98
IV.TB01.DHZ.01 2021-11-08T13:06:12.77 0.1 undecidable manual P 165 13.5753 121 -0.04 99
IV.ATVO.HHZ. 2021-11-08T13:06:12.71 0.1 undecidable manual P 175 13.0758 122 -0.02 99
IV.ATPI.EHZ. 2021-11-08T13:06:11.56 0.1 undecidable manual P 172 5.4945 146 -0.05 100
IV.ATPC.HHE. 2021-11-08T13:06:11.68 0.1 undecidable manual P 112 5.5944 145 0.06 100
IV.APEC.HHZ. 2021-11-08T13:06:11.73 0.1 undecidable manual P 19 6.8931 139 -0.05 100
IV.FIR.HHZ. 2021-11-08T13:06:09.21 3.0 undecidable manual P -9.99 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APEC.HHN. ML:0.9 0.00015264929999999998 0.1408 AML other m 2021-11-08T13:06:13.48
IV.APEC.HHE. ML:1.2 0.0002895 0.16 AML other m 2021-11-08T13:06:13.62
IV.BADI.EHN. ML:0.8 0.0000797145 1.8592 AML other m 2021-11-08T13:06:14.00
IV.BADI.EHE. ML:0.7 0.000064202645 0.1408 AML other m 2021-11-08T13:06:15.08
IV.PARC.HHE. ML:0.5 0.000026107190000000002 1.424 AML other m 2021-11-08T13:06:17.14
IV.PARC.HHN. ML:0.7 0.00003501313 0.4 AML other m 2021-11-08T13:06:18.63
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