Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.3 on date 25-10-2020 and time 15:19:05 (Italy) in region 4 km SW Serra Sant'Abbondio (PU)

A magnitude ML 0.3 earthquake occured in region: 4 km SW Serra Sant'Abbondio (PU), on

  • 25-10-2020 14:19:05 (UTC)
  • 25-10-2020 15:19:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4610, 12.7540 at 14 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
Serra Sant'Abbondio PU 4 1027 1027
Frontone PU 6 1300 2327
Sassoferrato AN 9 7285 9612
Scheggia e Pascelupo PG 9 1393 11005
Cantiano PU 10 2245 13250
Costacciaro PG 12 1216 14466
Cagli PU 13 8731 23197
Pergola PU 13 6333 29530
Sigillo PG 14 2404 31934
Genga AN 15 1797 33731
Arcevia AN 16 4612 38343
Fabriano AN 18 31480 69823
Gubbio PG 18 32216 102039
Fossato di Vico PG 18 2840 104879
Acqualagna PU 19 4393 109272

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km SW of Fano (60888 inhabitants)
49 Km NE of Perugia (166134 inhabitants)
52 Km S of Pesaro (94582 inhabitants)
56 Km N of Foligno (57155 inhabitants)
64 Km W of Ancona (100861 inhabitants)
69 Km S of Rimini (147750 inhabitants)
70 Km E of Arezzo (99543 inhabitants)
86 Km SE of Cesena (96758 inhabitants)
100 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 0.3 2020-10-25
14:19:05		 43.4608 12.7543 14 2020-10-25
14:26:48		 Sala Sismica INGV-Roma 84121601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-25 14:19:05 ± 0.04
Latitude 43.4608 ± 0.0018
Longitude 12.7543 ± 0.0012
Depth (km) 14 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84121601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 205
Semi-minor axis of confidence ellipse (meter) 88
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 175
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) 158
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 10
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) 0.19605
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 84121601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-25 14:26:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GAVE.EHZ. 2020-10-25T14:19:31.16 3.0 undecidable manual S -0.06 0
IV.NARO.HHZ. 2020-10-25T14:19:14.20 0.1 undecidable manual S 320 21.7671 106 0.04 97
IV.ATFO.HHZ. 2020-10-25T14:19:13.30 0.1 undecidable manual S 235 18.0708 112 0.06 97
IV.ARVD.HHZ. 2020-10-25T14:19:12.64 0.1 undecidable manual S 75 15.5733 117 0 99
IV.ATSC.EHN. 2020-10-25T14:19:10.86 0.1 undecidable manual S 233 6.7932 147 -0.03 99
IV.ATFO.HHZ. 2020-10-25T14:19:10.06 0.1 undecidable manual P 235 18.0708 112 -0.03 98
IV.FRON.EHZ. 2020-10-25T14:19:10.86 0.1 undecidable manual S 340 6.6933 148 -0.01 100
IV.NARO.HHZ. 2020-10-25T14:19:10.52 0.1 undecidable manual P 320 21.7671 106 -0.1 96
IV.ARVD.HHZ. 2020-10-25T14:19:09.76 0.1 undecidable manual P 75 15.5733 117 0.01 98
IV.FRON.EHZ. 2020-10-25T14:19:08.78 0.1 undecidable manual P 340 6.6933 148 0.05 99
IV.ATSC.EHN. 2020-10-25T14:19:08.73 0.1 undecidable manual P 233 6.7932 147 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHE. ML:0.5 0.000042050000000000006 0.12 AML other m 2020-10-25T14:19:10.92
IV.FRON.EHN. ML:0.4 0.0000314 0.12 AML other m 2020-10-25T14:19:11.33
IV.ARVD.HHE. ML:0.1 0.000008667952 0.2176 AML other m 2020-10-25T14:19:12.87
IV.ARVD.HHN. ML:0.1 0.000009622766 0.2432 AML other m 2020-10-25T14:19:12.77
IV.ATFO.HHN. ML:0.1 0.000011119842 0.096 AML other m 2020-10-25T14:19:13.88
IV.NARO.HHE. ML:0.4 0.0000153252235 0.0576 AML other m 2020-10-25T14:19:14.40
IV.NARO.HHN. ML:0.4 0.0000137568 0.0832 AML other m 2020-10-25T14:19:14.35
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