Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 12-05-2021 and time 15:08:13 (Italy) in region 3 km S Bolognola (MC)

A magnitude ML 2.1 earthquake occured in region: 3 km S Bolognola (MC), on

  • 12-05-2021 13:08:13 (UTC)
  • 12-05-2021 15:08:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9670, 13.2220 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
Bolognola MC 3 142 142
Ussita MC 7 444 586
Acquacanina MC 8 121 707
Fiastra MC 9 559 1266
Castelsantangelo sul Nera MC 10 281 1547
Sarnano MC 10 3264 4811
Montefortino FM 10 1178 5989
Amandola FM 11 3629 9618
Montemonaco AP 11 604 10222
Visso MC 12 1107 11329
Fiordimonte MC 13 202 11531
Gualdo MC 15 815 12346
Pievebovigliana MC 15 866 13212
Comunanza AP 16 3166 16378
Cessapalombo MC 16 512 16890
Pieve Torina MC 16 1458 18348
Montegallo AP 17 523 18871
San Ginesio MC 18 3498 22369
Preci PG 18 724 23093
Monte Cavallo MC 18 145 23238
Smerillo FM 19 365 23603
Camporotondo di Fiastrone MC 19 563 24166
Monte San Martino MC 19 765 24931
Caldarola MC 19 1823 26754
Penna San Giovanni MC 19 1108 27862
Muccia MC 19 915 28777
Montefalcone Appennino FM 20 424 29201

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
52 Km NW of Teramo (54892 inhabitants)
65 Km NE of Terni (111501 inhabitants)
70 Km E of Perugia (166134 inhabitants)
70 Km N of L'Aquila (69753 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
91 Km NW of Montesilvano (53738 inhabitants)
98 Km NW of Pescara (121014 inhabitants)
99 Km S of Fano (60888 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 2.1 2021-05-12
13:08:13		 42.9667 13.2218 8 2021-12-29
11:12:06		 Bollettino Sismico Italiano INGV 91760191
Reviewed
Rev100 		ML 2.2 2021-05-12
13:08:13		 42.9713 13.2003 9 2021-05-12
13:14:31		 Sala Sismica INGV-Roma 90021521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-12 13:08:13 ± 0.05
Latitude 42.9667 ± 0.0027
Longitude 13.2218 ± 0.0037
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91760191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 268
Semi-minor axis of confidence ellipse (meter) 185
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 48
Number of associated phases, regardless of their use for origin computation 59
Number of defining phases 56
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.75723
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 91760191
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-08 14:38:24

ML:2.2

Field Value
Value 2.2
Uncertainty 0.1
Num. used stations 23
Type of magnitude ML
Reference to an origin 90021521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-12 13:14:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PAOL.HHZ. 2021-05-12T13:09:14.42 3.0 undecidable manual Sn -3.12 0
IV.FIR.HHZ. 2021-05-12T13:08:47.18 3.0 undecidable manual Pg 5.2 0
IV.ARVD.HHZ. 2021-05-12T13:08:34.12 0.6 undecidable manual S 339 63.1923 50 0.97 34
IV.MOMA.HHZ. 2021-05-12T13:08:32.33 0.6 undecidable manual S 251 55.9995 50 1.09 32
IV.CPGN.EHZ. 2021-05-12T13:08:31.59 3.0 undecidable manual P -2.4 0
IV.ATCC.EHZ. 2021-05-12T13:08:31.24 0.6 undecidable manual S 297 53.0025 50 0.79 37
IV.RM33.EHZ. 2021-05-12T13:08:30.21 0.6 undecidable manual S 181 50.8158 50 0.36 43
IV.ASSB.HHZ. 2021-05-12T13:08:29.06 0.6 undecidable manual S 281 46.4202 50 0.36 43
IV.TERO.HHZ. 2021-05-12T13:08:29.39 0.6 undecidable manual S 141 49.2174 50 -0.05 46
IV.CING.HHZ. 2021-05-12T13:08:28.67 0.6 undecidable manual S 357 45.4212 50 0.25 45
IV.LNSS.HHZ. 2021-05-12T13:08:28.01 0.6 undecidable manual S 200 43.0236 50 0.24 45
IV.PIEI.HHZ. 2021-05-12T13:08:27.58 0.3 undecidable manual P 319 84.0492 50 -0.36 61
IV.EL6.EHZ. 2021-05-12T13:08:27.45 0.6 undecidable manual S 346 41.4252 50 0.1 46
IV.MURB.HHZ. 2021-05-12T13:08:25.19 0.3 undecidable manual P 300 65.2902 50 0.14 66
IV.ATFO.HHZ. 2021-05-12T13:08:25.40 0.3 undecidable manual P 310 68.7756 50 -0.2 65
IV.ARVD.HHZ. 2021-05-12T13:08:24.24 0.3 undecidable manual P 339 63.1923 50 -0.48 62
IV.ATCC.EHZ. 2021-05-12T13:08:23.03 0.1 undecidable manual P 297 53.0025 50 -0.13 90
IV.CESI.HHZ. 2021-05-12T13:08:23.09 0.6 undecidable manual S 279 26.0517 107 0.41 45
IV.MOMA.HHZ. 2021-05-12T13:08:23.87 0.3 undecidable manual P 251 55.9995 50 0.26 65
IV.SEF1.HNZ. 2021-05-12T13:08:23.35 0.3 undecidable manual S 312 29.8479 105 -0.59 63
IV.MNTP.HNZ. 2021-05-12T13:08:23.21 0.3 undecidable manual S 47 27.5502 106 0.04 72
IV.MML1.EHZ. 2021-05-12T13:08:22.71 0.6 undecidable manual S 309 26.0517 107 0.06 48
IV.TERO.HHZ. 2021-05-12T13:08:22.14 0.3 undecidable manual P 141 49.2174 50 -0.43 64
IV.MDAR.HNZ. 2021-05-12T13:08:22.47 0.3 undecidable manual S 346 25.8519 108 -0.14 71
IV.MTRA.EHZ. 2021-05-12T13:08:22.88 0.6 undecidable manual S 149 27.2505 107 -0.2 47
IV.RM33.EHZ. 2021-05-12T13:08:22.66 0.3 undecidable manual P 181 50.8158 50 -0.15 68
IV.LNSS.HHZ. 2021-05-12T13:08:21.35 0.1 positive manual P 200 43.0236 50 -0.26 89
IV.ASSB.HHZ. 2021-05-12T13:08:21.90 0.1 positive manual P 281 46.4202 50 -0.25 89
IV.MF5.EHZ. 2021-05-12T13:08:21.01 0.6 undecidable manual S 83 19.4694 113 0.5 44
IV.SAP2.EHZ. 2021-05-12T13:08:21.68 0.6 undecidable manual S 45 20.3685 112 0.87 38
IV.CING.HHZ. 2021-05-12T13:08:21.56 0.1 undecidable manual P 357 45.4212 50 -0.43 86
IV.EL6.EHZ. 2021-05-12T13:08:20.88 0.1 undecidable manual P 346 41.4252 50 -0.49 85
IV.PF6.EHZ. 2021-05-12T13:08:20.11 0.6 undecidable manual S 353 19.0698 113 -0.3 46
IT.MTCL.HGZ. 2021-05-12T13:08:20.38 0.6 undecidable manual S 280 18.2706 114 0.23 47
IV.MNTT.EHZ. 2021-05-12T13:08:20.25 0.1 undecidable manual P 71 32.1456 104 0.42 88
IV.NRCA.HHZ. 2021-05-12T13:08:20.02 0.6 undecidable manual S 211 17.1717 115 0.23 47
IV.SEF1.HNZ. 2021-05-12T13:08:19.40 0.3 undecidable manual P 312 29.8479 105 0 72
IV.MNTP.HNZ. 2021-05-12T13:08:19.22 0.3 undecidable manual P 47 27.5502 106 0.26 69
IV.FEMA.HNZ. 2021-05-12T13:08:19.45 0.6 undecidable manual S 268 13.9749 120 0.64 42
IV.GUMA.HHZ. 2021-05-12T13:08:19.17 0.6 undecidable manual S 41 14.0748 120 0.33 46
IV.FDMO.HHZ. 2021-05-12T13:08:18.61 0.6 undecidable manual S 305 13.3755 121 -0.02 49
IV.SAP2.EHZ. 2021-05-12T13:08:18.10 0.3 undecidable manual P 45 20.3685 112 0.51 66
IV.CESI.HHZ. 2021-05-12T13:08:18.64 0.1 negative manual P 279 26.0517 107 -0.03 97
IV.CSP1.EHZ. 2021-05-12T13:08:18.56 0.6 undecidable manual S 354 13.9749 120 -0.24 47
IV.MML1.EHZ. 2021-05-12T13:08:18.44 0.1 negative manual P 309 26.0517 107 -0.22 93
IV.MDAR.HNZ. 2021-05-12T13:08:18.78 0.3 undecidable manual P 346 25.8519 108 0.15 71
IV.MTRA.EHZ. 2021-05-12T13:08:18.51 0.3 undecidable manual P 149 27.2505 107 -0.39 67
IT.MTCL.HGZ. 2021-05-12T13:08:17.25 0.3 undecidable manual P 280 18.2706 114 0.04 73
IV.PF6.EHZ. 2021-05-12T13:08:17.03 0.1 undecidable manual P 353 19.0698 113 -0.33 92
IV.MF5.EHZ. 2021-05-12T13:08:17.65 0.1 positive manual P 83 19.4694 113 0.23 94
IV.MMO1.HNZ. 2021-05-12T13:08:17.62 0.6 undecidable manual S 131 11.3775 126 -0.42 46
IV.NRCA.HHZ. 2021-05-12T13:08:16.99 0.1 negative manual P 211 17.1717 115 -0.01 98
IV.MC2.EHZ. 2021-05-12T13:08:16.86 0.6 undecidable manual S 204 6.6933 141 0 50
IV.FEMA.HNZ. 2021-05-12T13:08:16.67 0.1 undecidable manual P 268 13.9749 120 0.23 95
IV.GUMA.HHZ. 2021-05-12T13:08:16.54 0.1 negative manual P 41 14.0748 120 0.09 97
IV.CSP1.EHZ. 2021-05-12T13:08:16.23 0.1 negative manual P 354 13.9749 120 -0.2 95
IV.FDMO.HHZ. 2021-05-12T13:08:16.26 0.1 negative manual P 305 13.3755 121 -0.07 98
IV.MMO1.HNZ. 2021-05-12T13:08:15.75 0.1 undecidable manual P 131 11.3775 126 -0.24 95
IV.MC2.EHZ. 2021-05-12T13:08:15.29 0.1 positive manual P 204 6.6933 141 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHN. ML:2.3 0.002240836 0.2624 AML other m 2021-05-12T13:08:18.72
IV.CSP1.EHE. ML:2.2 0.0017892695 0.2048 AML other m 2021-05-12T13:08:18.97
IV.FDMO.HHN. ML:2.0 0.001266601 0.2368 AML other m 2021-05-12T13:08:18.92
IV.FDMO.HHE. ML:2.1 0.001310344 0.4352 AML other m 2021-05-12T13:08:18.80
IV.GUMA.HNE. ML:2.6 0.004066015 0.2304 AML other m 2021-05-12T13:08:19.42
IV.GUMA.HHE. ML:2.7 0.005280220999999999 0.2432 AML other m 2021-05-12T13:08:19.43
IV.GUMA.HNN. ML:2.7 0.004985567 0.3008 AML other m 2021-05-12T13:08:19.88
IV.GUMA.HHN. ML:2.4 0.0030778305000000003 0.2816 AML other m 2021-05-12T13:08:19.87
IV.NRCA.HHE. ML:2.2 0.0015269934999999999 0.16 AML other m 2021-05-12T13:08:20.28
IV.NRCA.HNE. ML:2.2 0.001446692 0.16 AML other m 2021-05-12T13:08:20.28
IV.NRCA.HHN. ML:2.2 0.00134 0.18 AML other m 2021-05-12T13:08:20.25
IV.NRCA.HNN. ML:2.1 0.001215 0.18 AML other m 2021-05-12T13:08:20.25
IV.MF5.EHN. ML:2.0 0.0008655 0.54 AML other m 2021-05-12T13:08:21.92
IV.MF5.EHE. ML:2.2 0.0012804526 0.576 AML other m 2021-05-12T13:08:21.99
IV.SAP2.EHN. ML:2.9 0.005924875500000001 0.4416 AML other m 2021-05-12T13:08:21.87
IV.SAP2.EHE. ML:2.2 0.0013157215 0.4224 AML other m 2021-05-12T13:08:22.20
IV.MTRA.HNN. ML:1.7 0.0002841055 0.5184 AML other m 2021-05-12T13:08:23.10
IV.MTRA.EHE. ML:1.7 0.00030583415000000005 0.1984 AML other m 2021-05-12T13:08:23.07
IV.CESI.HHN. ML:2.1 0.0007284792 0.5824 AML other m 2021-05-12T13:08:23.52
IV.CESI.HHE. ML:2.1 0.00080028835 0.4416 AML other m 2021-05-12T13:08:23.43
IV.CESI.HNE. ML:2.0 0.0005764793000000001 0.2304 AML other m 2021-05-12T13:08:23.44
IV.CESI.HNN. ML:2.1 0.00071580965 0.1536 AML other m 2021-05-12T13:08:23.52
IV.LNSS.HHE. ML:2.3 0.0006425000000000001 0.26 AML other m 2021-05-12T13:08:28.44
IV.LNSS.HNE. ML:2.3 0.00066769465 0.2496 AML other m 2021-05-12T13:08:28.44
IV.LNSS.HHN. ML:2.4 0.000825 0.26 AML other m 2021-05-12T13:08:28.47
IV.LNSS.HNN. ML:2.3 0.00069902165 0.256 AML other m 2021-05-12T13:08:28.47
IV.ASSB.HHE. ML:1.9 0.00021592135 0.32 AML other m 2021-05-12T13:08:29.35
IV.ASSB.HHN. ML:1.8 0.00017742715000000002 0.256 AML other m 2021-05-12T13:08:29.57
IV.RM33.EHN. ML:1.4 0.000068008465 0.3584 AML other m 2021-05-12T13:08:30.57
IV.ATCC.EHN. ML:2.1 0.0003009135 0.2048 AML other m 2021-05-12T13:08:31.51
IV.ATCC.EHE. ML:2.1 0.000282163 0.4032 AML other m 2021-05-12T13:08:31.59
IV.MOMA.HNN. ML:1.8 0.00013844033 0.3968 AML other m 2021-05-12T13:08:32.52
IV.MOMA.HHN. ML:1.5 0.00007136544 0.2432 AML other m 2021-05-12T13:08:32.59
IV.MOMA.HNE. ML:2.0 0.00022784555 1.088 AML other m 2021-05-12T13:08:32.84
IV.MOMA.HHE. ML:1.9 0.0001887682 0.1856 AML other m 2021-05-12T13:08:33.38
IV.ARVD.HHE. ML:1.7 0.0000916683 0.1984 AML other m 2021-05-12T13:08:34.49
IV.ARVD.HHN. ML:1.6 0.000069388775 0.16 AML other m 2021-05-12T13:08:34.51
IV.MURB.HHN. ML:2.0 0.0001877514 0.2432 AML other m 2021-05-12T13:08:35.64
IV.MURB.HHE. ML:2.3 0.00039650000000000004 0.22 AML other m 2021-05-12T13:08:35.83
IV.PIEI.HHN. ML:1.5 0.00004546021 0.3584 AML other m 2021-05-12T13:08:40.48
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
Waveforms Seismic signals in miniseed + resp format Download