Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 24-08-2021 and time 10:18:53 (UTC) in region 2 km N Sassofeltrio (PU)

A magnitude ML 1.5 earthquake occured in region: 2 km N Sassofeltrio (PU), on

  • 24-08-2021 10:18:53 (UTC)
  • 24-08-2021 12:18:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9110, 12.5170 at 43 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
Sassofeltrio PU 2 1388 1388
Montescudo - Monte Colombo RN 3 6779 8167
Mercatino Conca PU 5 1086 9253
Gemmano RN 5 1158 10411
Monte Grimano Terme PU 6 1136 11547
Montefiore Conca RN 8 2269 13816
San Clemente RN 9 5577 19393
Coriano RN 9 10502 29895
Tavoleto PU 9 867 30762
Morciano di Romagna RN 10 7045 37807
Auditore PU 11 1566 39373
Verucchio RN 11 10078 49451
Monte Cerignone PU 11 669 50120
Saludecio RN 13 3120 53240
Poggio Torriana RN 13 5135 58375
Macerata Feltria PU 13 1990 60365
San Leo RN 14 2972 63337
Mondaino RN 14 1394 64731
Montecalvo in Foglia PU 14 2718 67449
Sassocorvaro PU 15 3504 70953
Montecopiolo PU 15 1128 72081
Montegridolfo RN 15 1012 73093
Riccione RN 15 34965 108058
Misano Adriatico RN 16 13014 121072
San Giovanni in Marignano RN 16 9417 130489
Pietrarubbia PU 16 660 131149
Maiolo RN 17 848 131997
Rimini RN 17 147750 279747
Santarcangelo di Romagna RN 18 22089 301836
Novafeltria RN 18 7164 309000
Talamello RN 18 1104 310104
Borghi FC 19 2843 312947
Tavullia PU 19 8003 320950
Cattolica RN 19 17125 338075
Frontino PU 20 293 338368

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km S of Rimini (147750 inhabitants)
32 Km W of Pesaro (94582 inhabitants)
33 Km SE of Cesena (96758 inhabitants)
41 Km W of Fano (60888 inhabitants)
51 Km SE of Forlì (117913 inhabitants)
62 Km SE of Ravenna (159116 inhabitants)
66 Km SE of Faenza (58541 inhabitants)
71 Km NE of Arezzo (99543 inhabitants)
81 Km SE of Imola (69797 inhabitants)
87 Km W of Ancona (100861 inhabitants)
90 Km N of Perugia (166134 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 1.5 2021-08-24
10:18:53		 43.9113 12.5167 43 2021-12-29
11:12:23		 Bollettino Sismico Italiano INGV 94858051
Reviewed
Rev100 		ML 1.5 2021-08-24
10:18:53		 43.9472 12.5123 36 2021-08-24
10:29:47		 Sala Sismica INGV-Roma 94571481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-24 10:18:53 ± 0.16
Latitude 43.9113 ± 0.0099
Longitude 12.5167 ± 0.0150
Depth (km) 43 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 94858051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1151
Semi-minor axis of confidence ellipse (meter) 640
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 67
Circular confidence region, given by single value of horizontal uncertainty (meter) 1150.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 70
Number of defining phases 47
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.84536
Number of stations at which the event was observed 46
Number of stations from which data was used for origin computation 27
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 94858051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-01 11:35:03

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 24
Type of magnitude ML
Reference to an origin 94571481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-24 10:29:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
SL.KOGS.BHZ. 2021-08-24T10:20:53.92 3.0 undecidable manual Sg 12.27 0
AC.VLO.HHZ. 2021-08-24T10:20:42.45 3.0 positive manual Pg 15.59 0
IV.PZUN.HHZ. 2021-08-24T10:20:40.10 3.0 undecidable manual Sn -1.82 0
IV.ACATE.EHZ. 2021-08-24T10:20:38.08 3.0 negative manual Pn 1.87 0
IV.GIZZ.HHZ. 2021-08-24T10:20:36.05 3.0 positive manual Pg 18.41 0
OT.OT05.EHZ. 2021-08-24T10:20:31.02 3.0 undecidable manual Sg 9.81 0
IV.QLNO.HHZ. 2021-08-24T10:20:23.61 3.0 undecidable manual Sn 1.24 0
CR.ZAG.BHZ. 2021-08-24T10:20:18.32 3.0 undecidable manual Sn -9.73 0
IV.SPS2.HHZ. 2021-08-24T10:20:17.91 3.0 negative manual Pn 3.21 0
GU.RNCA.HHZ. 2021-08-24T10:20:17.51 3.0 undecidable manual Sg 4.57 0
IV.BAG8.EHZ. 2021-08-24T10:20:11.45 3.0 undecidable manual Sg 0.28 0
SL.KOGS.BHZ. 2021-08-24T10:20:05.42 3.0 undecidable manual Pg 9.3 0
GU.STV.HHZ. 2021-08-24T10:20:00.17 3.0 negative manual Pn 5.13 0
IX.SNR3.EHZ.02 2021-08-24T10:20:00.47 3.0 negative manual Pg 8.98 0
IX.SSB3.HHZ.02 2021-08-24T10:19:59.65 3.0 negative manual Pg 11.76 0
CR.ZAG.BHZ. 2021-08-24T10:19:58.58 3.0 undecidable manual Pg 10.1 0
IV.VBKN.HHZ. 2021-08-24T10:19:51.03 3.0 negative manual Pg 4.65 0
IV.NDIM.HNZ. 2021-08-24T10:19:49.06 3.0 undecidable manual Sg 0.44 0
IV.TOLF.HHZ. 2021-08-24T10:19:45.87 3.0 undecidable manual Sn -0.94 0
GU.RNCA.HHZ. 2021-08-24T10:19:40.84 3.0 positive manual Pn 0.85 0
IV.VOBA.EHZ. 2021-08-24T10:19:31.33 3.0 negative manual Pn -5.44 0
IV.MIDA.HHZ. 2021-08-24T10:19:30.89 3.0 undecidable manual Pn -4.88 0
IV.NDIM.HHZ. 2021-08-24T10:19:26.84 3.0 negative manual Pg 0.51 0
IV.EL6.EHZ. 2021-08-24T10:19:20.02 0.6 undecidable manual S 144 79.8645 98 1.93 20
IV.RUFI.EHE. 2021-08-24T10:19:19.36 0.6 undecidable manual S 265 80.9523 98 1.04 35
IV.CAFI.HHZ. 2021-08-24T10:19:18.88 0.6 undecidable manual S 215 78.2661 99 1.13 34
IV.ATVO.HHZ. 2021-08-24T10:19:14.72 0.6 undecidable manual S 189 59.3961 106 0.95 39
IV.SSFR.HHZ. 2021-08-24T10:19:13.95 0.3 undecidable manual S 158 56.7987 108 0.71 65
IV.ATSC.EHE. 2021-08-24T10:19:13.45 0.6 undecidable manual S 166 55.6998 108 0.43 47
IV.ATPI.EHE. 2021-08-24T10:19:12.64 0.6 undecidable manual S 190 51.9036 111 0.4 48
IV.FRON.EHZ. 2021-08-24T10:19:11.62 0.6 undecidable manual S 159 46.7199 116 0.4 48
IV.ATPC.HHE. 2021-08-24T10:19:11.91 0.6 undecidable manual S 186 48.0186 114 0.45 48
IV.SEI.HHZ. 2021-08-24T10:19:10.14 0.3 undecidable manual P 280 93.8394 96 0.7 59
IV.APEC.HNN. 2021-08-24T10:19:10.04 0.6 undecidable manual S 191 39.9267 122 0.11 52
IV.PIEI.HHZ. 2021-08-24T10:19:10.02 0.3 undecidable manual S 178 41.7249 121 -0.24 75
IV.CRTC.HNE. 2021-08-24T10:19:09.90 0.6 undecidable manual S 118 33.3444 130 1.12 37
IV.MPAG.EHZ. 2021-08-24T10:19:09.65 0.6 undecidable manual S 148 36.8298 126 0.26 51
IV.VISG.HHZ. 2021-08-24T10:19:09.62 0.6 undecidable manual P 290 91.6416 96 0.45 43
IV.NARO.HHZ. 2021-08-24T10:19:08.59 0.3 undecidable manual S 171 33.744 129 -0.26 76
IV.PARC.HHZ. 2021-08-24T10:19:08.79 0.3 undecidable manual S 217 36.6411 126 -0.56 69
IV.EL6.EHZ. 2021-08-24T10:19:08.35 0.3 undecidable manual P 144 79.8645 98 0.63 63
IV.PESA.HHE. 2021-08-24T10:19:08.01 0.6 undecidable manual S 83 26.0517 139 0.34 50
IV.RUFI.EHE. 2021-08-24T10:19:08.40 0.6 undecidable manual P 265 80.9523 98 0.54 43
IV.CAFI.HHZ. 2021-08-24T10:19:07.37 0.3 undecidable manual P 215 78.2661 99 -0.15 72
IV.CPGN.EHZ. 2021-08-24T10:19:07.20 0.3 undecidable manual S 232 19.869 148 0.32 77
IV.PE3.EHZ. 2021-08-24T10:19:07.27 0.6 undecidable manual S 184 23.9538 142 -0.11 53
IV.LMD.HHZ. 2021-08-24T10:19:06.02 0.3 undecidable manual P 286 67.1772 102 -0.15 74
IV.MCIF.HNE. 2021-08-24T10:19:06.90 0.6 undecidable manual S 140 14.3745 156 0.58 48
IV.RSM2.HHE. 2021-08-24T10:19:05.98 0.6 undecidable manual S 297 6.3936 169 0.17 54
IV.ATMC.EHE. 2021-08-24T10:19:05.46 0.3 undecidable manual P 207 57.6978 107 0.44 70
IV.ATVO.HHZ. 2021-08-24T10:19:05.02 0.3 undecidable manual P 189 59.3961 106 -0.2 74
IV.CRE.HHZ. 2021-08-24T10:19:05.04 0.3 undecidable manual P 235 55.6998 108 0.25 73
IV.ASQU.HHZ. 2021-08-24T10:19:05.52 0.3 undecidable manual P 258 59.5959 106 0.27 72
IV.SSFR.HHZ. 2021-08-24T10:19:04.75 0.1 undecidable manual P 158 56.7987 108 -0.17 99
IV.ATSC.EHE. 2021-08-24T10:19:04.53 0.1 undecidable manual P 166 55.6998 108 -0.26 98
IV.ATPC.HHE. 2021-08-24T10:19:03.49 0.3 undecidable manual P 186 48.0186 114 -0.41 72
IV.ATPI.EHE. 2021-08-24T10:19:03.64 0.3 undecidable manual P 190 51.9036 111 -0.7 65
IV.SFI.EHZ. 2021-08-24T10:19:03.83 0.3 undecidable manual P 269 53.502 110 -0.7 65
IV.FRON.EHZ. 2021-08-24T10:19:03.43 0.1 negative manual P 159 46.7199 116 -0.32 98
IV.MPAG.EHZ. 2021-08-24T10:19:02.37 0.1 negative manual P 148 36.8298 126 -0.32 100
IV.CRTC.HNE. 2021-08-24T10:19:02.25 0.3 undecidable manual P 118 33.3444 130 -0.1 79
IV.APEC.HNN. 2021-08-24T10:19:02.59 0.3 undecidable manual P 191 39.9267 122 -0.42 73
IV.PIEI.HHZ. 2021-08-24T10:19:02.59 0.1 negative manual P 178 41.7249 121 -0.61 91
IV.NARO.HHZ. 2021-08-24T10:19:01.78 0.1 negative manual P 171 33.744 129 -0.61 93
IV.PARC.HHZ. 2021-08-24T10:19:01.87 0.3 undecidable manual P 217 36.6411 126 -0.81 64
IV.PE3.EHZ. 2021-08-24T10:19:01.03 0.3 undecidable manual P 184 23.9538 142 -0.5 74
IV.MCIF.HNE. 2021-08-24T10:19:01.02 1.0 undecidable manual P 140 14.3745 156 0.09 27
IV.PESA.HHE. 2021-08-24T10:19:01.63 0.3 undecidable manual P 83 26.0517 139 -0.07 81
IV.RSM2.HHE. 2021-08-24T10:19:00.47 1.0 undecidable manual P 297 6.3936 169 -0.16 27
IV.CPGN.EHZ. 2021-08-24T10:19:00.93 0.3 positive manual P 232 19.869 148 -0.32 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PE3.EHN. ML:1.9 0.00020750000000000003 0.5 AML other m 2021-08-24T10:19:07.63
IV.PE3.EHE. ML:1.7 0.000124 0.3 AML other m 2021-08-24T10:19:07.78
IV.CRE.HHE. ML:1.4 0.0000401 0.98 AML other m 2021-08-24T10:19:07.41
IV.NARO.HHE. ML:1.6 0.00009590000000000001 0.16 AML other m 2021-08-24T10:19:08.81
IV.NARO.HHN. ML:1.7 0.000123 0.26 AML other m 2021-08-24T10:19:08.80
IV.PIEI.HHE. ML:1.7 0.0001014 0.32 AML other m 2021-08-24T10:19:10.28
IV.CRE.HHN. ML:1.6 0.00006025 0.8 AML other m 2021-08-24T10:19:10.39
IV.MPAG.EHE. ML:1.3 0.000051949999999999996 0.68 AML other m 2021-08-24T10:19:10.85
IV.PIEI.HHN. ML:1.5 0.0000637 0.14 AML other m 2021-08-24T10:19:11.31
IV.MPAG.EHN. ML:1.4 0.0000555 0.72 AML other m 2021-08-24T10:19:11.89
IV.SFI.EHN. ML:1.2 0.000032 1.06 AML other m 2021-08-24T10:19:14.35
IV.SFI.EHE. ML:1.2 0.0000236 1.22 AML other m 2021-08-24T10:19:14.65
IV.SSFR.HHE. ML:1.8 0.00010355000000000001 0.68 AML other m 2021-08-24T10:19:14.87
IV.SSFR.HHN. ML:2.0 0.0001575 0.66 AML other m 2021-08-24T10:19:15.11
IV.ATVO.HHN. ML:1.5 0.000052449999999999994 1.66 AML other m 2021-08-24T10:19:16.94
IV.ATVO.HHE. ML:1.4 0.00004375 1.3 AML other m 2021-08-24T10:19:16.86
IV.ASQU.HHE. ML:1.3 0.000030550000000000004 0.46 AML other m 2021-08-24T10:19:16.73
IV.ASQU.HHN. ML:1.6 0.0000583 0.46 AML other m 2021-08-24T10:19:16.88
IV.CAFI.HHE. ML:1.2 0.000020450000000000002 0.96 AML other m 2021-08-24T10:19:19.24
IV.CAFI.HHN. ML:1.3 0.000024149999999999997 0.86 AML other m 2021-08-24T10:19:20.20
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