Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 21-10-2020 and time 18:02:15 (Italy) in region 3 km E Mercatino Conca (PU)

A magnitude ML 1.8 earthquake occured in region: 3 km E Mercatino Conca (PU), on

  • 21-10-2020 16:02:15 (UTC)
  • 21-10-2020 18:02:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.8580, 12.5280 at 44 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
Mercatino Conca PU 3 1086 1086
Sassofeltrio PU 4 1388 2474
Monte Grimano Terme PU 4 1136 3610
Tavoleto PU 5 867 4477
Auditore PU 5 1566 6043
Gemmano RN 7 1158 7201
Montescudo - Monte Colombo RN 7 6779 13980
Montefiore Conca RN 8 2269 16249
Sassocorvaro PU 9 3504 19753
Macerata Feltria PU 9 1990 21743
Monte Cerignone PU 9 669 22412
Montecalvo in Foglia PU 10 2718 25130
Morciano di Romagna RN 11 7045 32175
Saludecio RN 12 3120 35295
San Clemente RN 12 5577 40872
Mondaino RN 12 1394 42266
Montegridolfo RN 13 1012 43278
Pietrarubbia PU 13 660 43938
Coriano RN 13 10502 54440
Montecopiolo PU 14 1128 55568
San Leo RN 15 2972 58540
Lunano PU 16 1527 60067
Frontino PU 16 293 60360
Verucchio RN 16 10078 70438
Urbino PU 17 15019 85457
Piandimeleto PU 17 2167 87624
San Giovanni in Marignano RN 17 9417 97041
Maiolo RN 17 848 97889
Carpegna PU 18 1674 99563
Peglio PU 18 696 100259
Poggio Torriana RN 18 5135 105394
Misano Adriatico RN 19 13014 118408
Petriano PU 19 2829 121237
Tavullia PU 19 8003 129240
Riccione RN 19 34965 164205
Novafeltria RN 20 7164 171369
Belforte all'Isauro PU 20 769 172138

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km S of Rimini (147750 inhabitants)
32 Km W of Pesaro (94582 inhabitants)
39 Km SE of Cesena (96758 inhabitants)
40 Km W of Fano (60888 inhabitants)
56 Km SE of Forlì (117913 inhabitants)
68 Km SE of Ravenna (159116 inhabitants)
68 Km NE of Arezzo (99543 inhabitants)
70 Km SE of Faenza (58541 inhabitants)
84 Km W of Ancona (100861 inhabitants)
84 Km N of Perugia (166134 inhabitants)
85 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 1.8 2020-10-21
16:02:15		 43.8583 12.5278 44 2021-02-26
14:56:18		 Bollettino Sismico Italiano INGV 86968151
Reviewed
Rev100 		ML 1.8 2020-10-21
16:02:15		 43.8248 12.4953 43 2020-10-21
16:13:58		 Sala Sismica INGV-Roma 83995691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-21 16:02:15 ± 0.19
Latitude 43.8583 ± 0.0108
Longitude 12.5278 ± 0.0125
Depth (km) 44 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86968151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1176
Semi-minor axis of confidence ellipse (meter) 467
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 198
Circular confidence region, given by single value of horizontal uncertainty (meter) 1180.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.09893
Epicentral distance of station farthest from the epicenter (degree) 0.91641
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 43
Type of magnitude ML
Reference to an origin 83995691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-21 16:13:58

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 86968151
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-09 12:16:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASQU.HHZ. 2020-10-21T16:02:36.76 0.3 undecidable manual S 264 59.496 108 0.78 59
IV.SFI.EHZ. 2020-10-21T16:02:35.27 0.6 undecidable manual S 276 54.7008 111 0.26 46
IV.ATSC.EHZ. 2020-10-21T16:02:34.23 0.3 undecidable manual S 165 49.8168 115 0.19 70
IV.ATBU.EHE. 2020-10-21T16:02:33.23 0.3 undecidable manual S 178 42.5241 122 0.58 65
IV.FDMO.HHZ. 2020-10-21T16:02:33.29 0.3 undecidable manual P 154 101.7204 96 0.74 55
IV.BADI.EHZ. 2020-10-21T16:02:33.34 0.3 undecidable manual S 211 44.9217 119 0.25 70
IV.ATPI.EHZ. 2020-10-21T16:02:33.67 0.3 undecidable manual S 193 46.3203 118 0.3 69
IV.CSP1.EHZ. 2020-10-21T16:02:33.28 0.3 undecidable manual P 147 101.0211 96 0.82 53
IV.FRON.EHZ. 2020-10-21T16:02:32.59 0.3 undecidable manual S 157 41.0256 123 0.21 71
IV.APEC.HHZ. 2020-10-21T16:02:31.81 0.3 undecidable manual S 195 34.3434 130 0.57 66
IV.CRTC.HHZ. 2020-10-21T16:02:31.21 0.6 undecidable manual S 109 30.1476 135 0.65 42
IV.PARC.HHZ. 2020-10-21T16:02:31.30 0.3 undecidable manual S 225 32.8449 132 0.31 70
IV.PESA.HHZ. 2020-10-21T16:02:30.47 0.6 undecidable manual S 70 26.5512 140 0.42 46
IV.MPAG.EHZ. 2020-10-21T16:02:30.64 0.6 undecidable manual S 144 31.4463 134 -0.13 49
IV.RUFI.EHZ. 2020-10-21T16:02:30.68 0.3 undecidable manual P 269 81.4518 100 0.62 60
IV.EL6.EHZ. 2020-10-21T16:02:29.74 0.3 undecidable manual P 142 74.6697 101 0.52 63
IV.PE3.EHZ. 2020-10-21T16:02:29.03 0.3 undecidable manual S 188 18.1707 151 0 77
IV.NARO.HHZ. 2020-10-21T16:02:29.64 0.3 undecidable manual S 171 27.75 138 -0.58 67
IV.MURB.HHZ. 2020-10-21T16:02:29.00 0.3 undecidable manual P 180 66.0894 105 0.82 57
IV.RINC.HHZ. 2020-10-21T16:02:29.54 0.6 undecidable manual P 273 73.6707 102 0.43 43
IV.CAFI.HHZ. 2020-10-21T16:02:28.99 0.3 undecidable manual P 218 74.0703 102 -0.16 67
IV.RSM2.HHN. 2020-10-21T16:02:28.30 1.0 undecidable manual S 323 10.9779 162 -0.12 26
IV.ASQU.HHZ. 2020-10-21T16:02:27.48 0.3 undecidable manual P 264 59.496 108 0.08 71
IV.SSFR.HNZ. 2020-10-21T16:02:26.14 0.3 undecidable manual P 156 51.1155 114 -0.28 68
IV.SFI.EHZ. 2020-10-21T16:02:26.48 0.3 negative manual P 276 54.7008 111 -0.35 67
IV.TB03.DHZ.01 2020-10-21T16:02:26.57 1.0 undecidable manual P 191 51.6039 114 0.09 24
IV.CRE.HHZ. 2020-10-21T16:02:26.77 0.3 undecidable manual P 240 53.3022 112 0.1 71
IV.ATMC.EHZ. 2020-10-21T16:02:26.54 0.6 undecidable manual P 211 53.0025 113 -0.1 47
IV.ATVO.HNZ. 2020-10-21T16:02:26.47 0.6 undecidable manual P 190 53.7018 112 -0.25 46
IV.TB01.DHZ.01 2020-10-21T16:02:26.49 0.6 undecidable manual P 188 53.4021 112 -0.2 46
IV.ATPI.EHZ. 2020-10-21T16:02:25.43 0.3 undecidable manual P 193 46.3203 118 -0.46 66
IV.ATSC.EHZ. 2020-10-21T16:02:25.97 0.3 undecidable manual P 165 49.8168 115 -0.31 68
IV.ATBU.EHE. 2020-10-21T16:02:25.24 0.1 negative manual P 178 42.5241 122 -0.24 94
IV.BADI.EHZ. 2020-10-21T16:02:25.26 0.3 undecidable manual P 211 44.9217 119 -0.47 66
IV.ATPC.HHZ. 2020-10-21T16:02:25.01 0.6 undecidable manual P 188 42.3243 122 -0.44 45
IV.CRTC.HHZ. 2020-10-21T16:02:24.41 0.3 undecidable manual P 109 30.1476 135 0.14 73
IV.FRON.EHZ. 2020-10-21T16:02:24.96 0.3 undecidable manual P 157 41.0256 123 -0.36 69
IV.PESA.HHZ. 2020-10-21T16:02:24.01 0.1 undecidable manual P 70 26.5512 140 0.04 100
IV.APEC.HHZ. 2020-10-21T16:02:24.13 0.6 undecidable manual P 195 34.3434 130 -0.53 44
IV.MPAG.EHZ. 2020-10-21T16:02:24.01 0.3 undecidable manual P 144 31.4463 134 -0.38 70
IV.NARO.HHZ. 2020-10-21T16:02:23.38 0.1 negative manual P 171 27.75 138 -0.69 84
IV.PARC.HHZ. 2020-10-21T16:02:23.68 0.1 negative manual P 225 32.8449 132 -0.84 78
IV.RSM2.HHN. 2020-10-21T16:02:22.82 0.6 undecidable manual P 323 10.9779 162 -0.21 50
IV.PE3.EHZ. 2020-10-21T16:02:22.83 0.3 undecidable manual P 188 18.1707 151 -0.55 68
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PE3.EHE. ML:2.9 0.0021157005 0.4608 AML other m 2020-10-21T16:02:29.32
IV.PE3.EHN. ML:2.7 0.001301043 0.3456 AML other m 2020-10-21T16:02:29.53
IV.NARO.HHE. ML:2.0 0.00025465515 0.2176 AML other m 2020-10-21T16:02:29.79
IV.NARO.HHN. ML:1.8 0.00014872235000000001 0.1408 AML other m 2020-10-21T16:02:29.93
IV.MPAG.EHN. ML:1.7 0.00010848915000000001 0.2048 AML other m 2020-10-21T16:02:31.24
IV.PESA.HHN. ML:2.3 0.00046979814999999995 0.2048 AML other m 2020-10-21T16:02:31.35
IV.MPAG.EHE. ML:1.8 0.0001548169 0.1792 AML other m 2020-10-21T16:02:31.47
IV.PESA.HHE. ML:2.5 0.0008988083 0.3072 AML other m 2020-10-21T16:02:31.57
IV.APEC.HHN. ML:1.8 0.000129286785 0.256 AML other m 2020-10-21T16:02:31.88
IV.APEC.HHE. ML:1.6 0.00009147361499999999 0.2304 AML other m 2020-10-21T16:02:32.47
IV.PARC.HHN. ML:1.3 0.00004992751500000001 1.0752 AML other m 2020-10-21T16:02:32.41
IV.FRON.EHE. ML:1.4 0.000053260445000000006 0.1664 AML other m 2020-10-21T16:02:32.70
IV.FRON.EHN. ML:1.6 0.000085898195 0.4096 AML other m 2020-10-21T16:02:32.79
IV.PARC.HHE. ML:1.2 0.00004048330999999999 0.3328 AML other m 2020-10-21T16:02:33.18
IV.BADI.EHE. ML:1.6 0.00008185000000000001 0.48 AML other m 2020-10-21T16:02:34.48
IV.BADI.EHN. ML:1.8 0.00011399999999999999 0.72 AML other m 2020-10-21T16:02:34.44
IV.SFI.EHN. ML:1.2 0.000032178355 2.9952 AML other m 2020-10-21T16:02:36.30
IV.ASQU.HHE. ML:1.7 0.00007533485000000001 0.4224 AML other m 2020-10-21T16:02:37.72
IV.ASQU.HHN. ML:1.6 0.00006644999999999999 0.92 AML other m 2020-10-21T16:02:37.50
IV.ATPI.EHE. ML:1.5 0.000061401455 1.5136 AML other m 2020-10-21T16:02:38.12
IV.ATPI.EHN. ML:1.5 0.00006204948000000001 0.4608 AML other m 2020-10-21T16:02:38.18
IV.MURB.HHN. ML:2.1 0.0001658099 0.2304 AML other m 2020-10-21T16:02:40.11
IV.MURB.HHE. ML:2.3 0.000309597 0.3072 AML other m 2020-10-21T16:02:40.68
IV.MURB.HNE. ML:2.3 0.0002968343 0.32 AML other m 2020-10-21T16:02:40.68
IV.EL6.EHE. ML:1.7 0.00006646773 0.384 AML other m 2020-10-21T16:02:41.76
IV.SFI.EHE. ML:1.2 0.00003191898 1.5648 AML other m 2020-10-21T16:02:41.07
IV.RINC.HHE. ML:1.8 0.000086416725 1.68 AML other m 2020-10-21T16:02:41.09
IV.RINC.HHN. ML:1.8 0.00008625000000000001 1.06 AML other m 2020-10-21T16:02:42.13
IV.EL6.EHN. ML:1.9 0.00009107040499999999 0.3328 AML other m 2020-10-21T16:02:42.46
IV.MURB.HNN. ML:2.0 0.00014754151499999998 0.256 AML other m 2020-10-21T16:02:42.87
IV.RUFI.EHN. ML:1.6 0.000049760385 1.36 AML other m 2020-10-21T16:02:42.90
IV.RUFI.EHE. ML:1.6 0.000043324795 1.7696 AML other m 2020-10-21T16:02:43.96
IV.CSP1.EHN. ML:2.1 0.0001126 0.42 AML other m 2020-10-21T16:02:49.84
IV.FDMO.HHE. ML:1.4 0.0000209890475 0.2048 AML other m 2020-10-21T16:02:50.18
IV.FDMO.HHN. ML:1.5 0.000024140445 0.1664 AML other m 2020-10-21T16:02:50.47
IV.CSP1.EHE. ML:2.0 0.00008080054000000001 0.4224 AML other m 2020-10-21T16:02:53.38
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