Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.2 on date 21-10-2021 and time 10:08:10 (Italy) in region 6 km SE Genga (AN)

A magnitude ML 1.2 (quarry blast) earthquake occured in region: 6 km SE Genga (AN), on

  • 21-10-2021 08:08:10 (UTC)
  • 21-10-2021 10:08:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3860, 12.9640 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Event type: quarry blast.

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
Genga AN 6 1797 1797
Fabriano AN 7 31480 33277
Cerreto d'Esi AN 7 3817 37094
Serra San Quirico AN 8 2850 39944
Poggio San Vicino MC 9 246 40190
Sassoferrato AN 10 7285 47475
Mergo AN 11 1037 48512
Arcevia AN 13 4612 53124
Apiro MC 14 2280 55404
Rosora AN 14 1985 57389
Cupramontana AN 14 4756 62145
Matelica MC 15 9981 72126
Esanatoglia MC 15 2034 74160
Castelplanio AN 16 3540 77700
Maiolati Spontini AN 16 6248 83948
Poggio San Marcello AN 17 693 84641
Montecarotto AN 18 1987 86628
Monte Roberto AN 18 3061 89689
Gagliole MC 18 620 90309
Serra de' Conti AN 19 3746 94055
San Paolo di Jesi AN 19 933 94988
Castelbellino AN 19 4947 99935
Staffolo AN 19 2253 102188
Sigillo PG 19 2404 104592
Fossato di Vico PG 19 2840 107432
Serra Sant'Abbondio PU 20 1027 108459

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km S of Fano (60888 inhabitants)
52 Km SW of Ancona (100861 inhabitants)
52 Km NE of Foligno (57155 inhabitants)
56 Km NE of Perugia (166134 inhabitants)
59 Km S of Pesaro (94582 inhabitants)
82 Km SE of Rimini (147750 inhabitants)
88 Km E of Arezzo (99543 inhabitants)
95 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
Bulletin
Rev1000 		ML 1.2 2021-10-21
08:08:10		 43.3855 12.9645 1 2022-03-30
13:04:38		 Bollettino Sismico Italiano INGV 101213771
Reviewed
Rev100 		ML 1.2 2021-10-21
08:08:10		 43.4038 12.9957 10 2021-10-21
08:14:20		 Sala Sismica INGV-Roma 96830831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-21 08:08:10 ± 0.15
Latitude 43.3855 ± 0.0090
Longitude 12.9645 ± 0.0161
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 101213771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1340
Semi-minor axis of confidence ellipse (meter) 920
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 245
Circular confidence region, given by single value of horizontal uncertainty (meter) 1340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.47
Epicentral distance of station closest to the epicenter (degree) 0.06115
Epicentral distance of station farthest from the epicenter (degree) 0.56208
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 29
Type of magnitude ML
Reference to an origin 101213771
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-21 10:53:36

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 29
Type of magnitude ML
Reference to an origin 96830831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-21 08:14:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2021-10-21T08:08:21.44 0.3 undecidable manual P 169 62.3931 50 -1.13 49
IV.MC2.EHZ. 2021-10-21T08:08:20.43 0.6 undecidable manual P 161 55.5999 91 -0.89 37
IV.ASSB.HHZ. 2021-10-21T08:08:19.21 0.3 undecidable manual P 213 45.3213 91 -0.05 73
IV.APEC.HHZ. 2021-10-21T08:08:18.32 0.3 undecidable manual P 294 47.8188 91 -1.44 43
IV.FDMO.HHZ. 2021-10-21T08:08:17.85 0.3 undecidable manual P 166 39.9267 91 -0.33 70
IV.PIEI.HHZ. 2021-10-21T08:08:17.74 0.3 undecidable manual P 296 38.3283 91 -0.12 73
IV.NARO.HHZ. 2021-10-21T08:08:17.97 0.3 undecidable manual P 309 39.7269 91 -0.17 72
IV.MML1.EHZ. 2021-10-21T08:08:16.43 0.3 undecidable manual P 179 30.1476 91 0.21 73
IV.MPAG.EHZ. 2021-10-21T08:08:16.48 0.3 undecidable manual P 329 31.6461 91 -0.04 75
IV.FRON.EHZ. 2021-10-21T08:08:15.41 0.3 undecidable manual P 307 24.1536 91 0.39 71
IV.SNTG.HHZ. 2021-10-21T08:08:14.00 0.3 undecidable manual P 188 14.5743 92 0.9 60
IV.FOSV.EHZ. 2021-10-21T08:08:14.88 0.3 undecidable manual P 239 19.2696 91 0.85 61
IV.EL6.EHZ. 2021-10-21T08:08:13.04 0.3 undecidable manual P 119 12.6762 92 0.32 74
IV.CING.HHZ. 2021-10-21T08:08:13.91 0.3 undecidable manual P 93 18.6702 92 0 78
IV.ARVD.HHZ. 2021-10-21T08:08:12.93 0.1 undecidable manual P 352 12.5763 92 0.22 100
IV.MMUR.HNZ. 2021-10-21T08:08:11.64 0.3 undecidable manual P 23 6.7932 94 0.1 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHN. ML:1.0 0.00013818885 0.1408 AML other m 2021-10-21T08:08:15.46
IV.ARVD.HHE. ML:1.1 0.0001773175 0.1024 AML other m 2021-10-21T08:08:16.03
IV.CING.HHE. ML:1.0 0.000088503525 0.1984 AML other m 2021-10-21T08:08:17.53
IV.EL6.EHE. ML:1.5 0.0004205 0.42 AML other m 2021-10-21T08:08:17.52
IV.EL6.EHN. ML:1.6 0.000585 0.38 AML other m 2021-10-21T08:08:17.56
IV.SNTG.HNN. ML:1.3 0.0002254116 0.1472 AML other m 2021-10-21T08:08:17.58
IV.SNTG.HHN. ML:1.3 0.00023209585 0.1216 AML other m 2021-10-21T08:08:17.59
IV.SNTG.HNE. ML:1.1 0.000146700735 0.192 AML other m 2021-10-21T08:08:17.83
IV.SNTG.HHE. ML:1.0 0.000136 0.2 AML other m 2021-10-21T08:08:17.74
IV.CING.HHN. ML:1.2 0.0001289867 0.1792 AML other m 2021-10-21T08:08:18.12
IV.FOSV.EHN. ML:1.0 0.0001015 1.78 AML other m 2021-10-21T08:08:18.08
IV.FOSV.EHE. ML:1.0 0.00008324999999999999 1.82 AML other m 2021-10-21T08:08:19.06
IV.FRON.EHN. ML:1.2 0.0001105 0.3 AML other m 2021-10-21T08:08:20.37
IV.FRON.EHE. ML:1.0 0.000068424 0.2624 AML other m 2021-10-21T08:08:20.80
IV.MPAG.EHN. ML:0.9 0.0000387 0.1 AML other m 2021-10-21T08:08:22.42
IV.MML1.HNE. ML:1.3 0.00010719352 0.3072 AML other m 2021-10-21T08:08:22.38
IV.MML1.EHE. ML:1.2 0.0000913 0.34 AML other m 2021-10-21T08:08:22.55
IV.MPAG.EHE. ML:0.9 0.000041849144999999995 0.096 AML other m 2021-10-21T08:08:22.72
IV.MML1.EHN. ML:1.0 0.000056017020000000004 0.1792 AML other m 2021-10-21T08:08:24.15
IV.PIEI.HHE. ML:1.1 0.00004888002 0.2816 AML other m 2021-10-21T08:08:24.76
IV.FDMO.HHE. ML:1.5 0.000117 0.14 AML other m 2021-10-21T08:08:25.48
IV.NARO.HHE. ML:0.9 0.00003081875 0.1216 AML other m 2021-10-21T08:08:25.65
IV.FDMO.HHN. ML:1.4 0.0000863 0.14 AML other m 2021-10-21T08:08:25.92
IV.PIEI.HHN. ML:1.0 0.000033197025 0.1792 AML other m 2021-10-21T08:08:26.31
IV.NARO.HHN. ML:0.9 0.000032172879 0.1408 AML other m 2021-10-21T08:08:27.60
IV.ASSB.HHN. ML:1.2 0.0000458 1.82 AML other m 2021-10-21T08:08:28.02
IV.ASSB.HHE. ML:1.1 0.000040396315 1.68 AML other m 2021-10-21T08:08:28.07
IV.NRCA.HHE. ML:1.4 0.00005525 0.62 AML other m 2021-10-21T08:08:32.35
IV.NRCA.HHN. ML:1.6 0.00007426097 0.1408 AML other m 2021-10-21T08:08:32.86
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