Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 18-10-2020 and time 15:03:25 (UTC) in region 7 km S Mercatello sul Metauro (PU)

A magnitude ML 0.5 earthquake occured in region: 7 km S Mercatello sul Metauro (PU), on

  • 18-10-2020 15:03:25 (UTC)
  • 18-10-2020 17:03:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5820, 12.3280 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
Mercatello sul Metauro PU 8 1378 1378
Apecchio PU 8 1882 3260
Borgo Pace PU 9 606 3866
Sant'Angelo in Vado PU 12 4133 7999
San Giustino PG 13 11297 19296
Sestino AR 14 1355 20651
Piobbico PU 15 2029 22680
Sansepolcro AR 15 15884 38564
Città di Castello PG 16 39913 78477
Belforte all'Isauro PU 16 769 79246
Piandimeleto PU 17 2167 81413
Pietralunga PG 18 2111 83524
Badia Tedalda AR 18 1087 84611
Urbania PU 19 7099 91710
Peglio PU 19 696 92406
Lunano PU 19 1527 93933
Citerna PG 19 3531 97464

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Arezzo (99543 inhabitants)
53 Km N of Perugia (166134 inhabitants)
57 Km SW of Rimini (147750 inhabitants)
60 Km SW of Pesaro (94582 inhabitants)
62 Km S of Cesena (96758 inhabitants)
63 Km W of Fano (60888 inhabitants)
75 Km SE of Forlì (117913 inhabitants)
76 Km NW of Foligno (57155 inhabitants)
86 Km E of Siena (53903 inhabitants)
86 Km SE of Faenza (58541 inhabitants)
89 Km E of Firenze (382808 inhabitants)
94 Km S of Ravenna (159116 inhabitants)
94 Km E of Scandicci (50609 inhabitants)
96 Km W of Ancona (100861 inhabitants)
99 Km SE of Imola (69797 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 0.5 2020-10-18
15:03:25		 43.5818 12.3278 9 2021-02-26
14:56:11		 Bollettino Sismico Italiano INGV 85498571
Reviewed
Rev100 		ML 0.4 2020-10-18
15:03:25		 43.5783 12.343 1 2020-10-18
15:08:08		 Sala Sismica INGV-Roma 83886271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-18 15:03:25 ± 0.23
Latitude 43.5818 ± 0.0045
Longitude 12.3278 ± 0.0062
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85498571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 580
Semi-minor axis of confidence ellipse (meter) 129
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 43
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.20774
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 85498571
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-17 17:10:48

ML:0.4

Field Value
Value 0.4
Uncertainty 0.5
Num. used stations 6
Type of magnitude ML
Reference to an origin 83886271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-18 15:08:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MCT.HHZ. 2020-10-18T15:04:44.19 3.0 negative manual Pn -5.13 0
IV.ZONE.HHZ. 2020-10-18T15:04:35.93 3.0 undecidable manual Sg 1.21 0
CR.STON.BHZ. 2020-10-18T15:04:28.86 3.0 undecidable manual Pn 4.55 0
MN.TRI.HHZ. 2020-10-18T15:04:21.71 3.0 undecidable manual Sn -9.93 0
IV.VIVA.HHZ. 2020-10-18T15:04:13.52 3.0 undecidable manual Sn -1.59 0
TV.SF01.EHZ. 2020-10-18T15:03:50.50 3.0 undecidable manual Sg 1.13 0
IV.GAVE.EHZ. 2020-10-18T15:03:42.69 3.0 undecidable manual Pg 1.71 0
IV.MF5.EHZ. 2020-10-18T15:03:40.99 3.0 undecidable manual Pg -1.77 0
IV.ATVO.HHZ. 2020-10-18T15:03:33.76 0.6 undecidable manual S 164 23.0547 110 0.1 48
IV.NARO.HHZ. 2020-10-18T15:03:32.17 0.6 undecidable manual S 81 20.5683 112 -0.68 42
IV.ATPI.EHZ. 2020-10-18T15:03:31.37 0.6 undecidable manual S 158 15.7731 118 0.03 50
IV.ATVO.HHZ. 2020-10-18T15:03:30.07 0.3 undecidable manual P 164 23.0547 110 0.01 74
IV.SEI.HHZ. 2020-10-18T15:03:30.49 3.0 undecidable manual P -6.55 0
IV.PARC.HHZ. 2020-10-18T15:03:30.00 0.6 undecidable manual S 316 10.2786 130 0.23 48
IV.APEC.HNN. 2020-10-18T15:03:29.37 0.6 undecidable manual S 109 7.881 137 0.22 48
IV.BADI.EHZ. 2020-10-18T15:03:29.50 0.6 undecidable manual S 220 10.4784 129 -0.31 47
IV.NARO.HHZ. 2020-10-18T15:03:29.78 0.3 undecidable manual P 81 20.5683 112 0.19 72
IV.ATPI.EHZ. 2020-10-18T15:03:28.86 0.3 undecidable manual P 158 15.7731 118 0.14 73
IV.BADI.EHZ. 2020-10-18T15:03:27.72 0.1 undecidable manual P 220 10.4784 129 -0.11 99
IV.PARC.HHZ. 2020-10-18T15:03:27.76 0.1 undecidable manual P 316 10.2786 130 -0.05 100
IV.APEC.HNN. 2020-10-18T15:03:27.52 0.3 undecidable manual P 109 7.881 137 0.07 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BADI.EHE. ML:0.5 0.000042749999999999996 1.38 AML other m 2020-10-18T15:03:30.20
IV.BADI.EHN. ML:0.5 0.0000406 0.16 AML other m 2020-10-18T15:03:30.48
IV.PARC.HHN. ML:0.3 0.000024 1.22 AML other m 2020-10-18T15:03:30.89
IV.PARC.HHE. ML:0.2 0.000020499999999999997 0.58 AML other m 2020-10-18T15:03:32.11
IV.SSFR.HHN. ML:1.4 0.0000847 1.46 AML other m 2020-10-18T15:03:55.76
IV.SSFR.HHE. ML:1.5 0.0001045 0.06 AML other m 2020-10-18T15:03:55.79
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