Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.5 on date 21-12-2020 and time 10:44:58 (Italy) in region 7 km SE Genga (AN)

A magnitude ML 1.5 (quarry blast) earthquake occured in region: 7 km SE Genga (AN), on

  • 21-12-2020 09:44:58 (UTC)
  • 21-12-2020 10:44:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3840, 12.9860 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 7 1797 1797
Cerreto d'Esi AN 7 3817 5614
Serra San Quirico AN 8 2850 8464
Poggio San Vicino MC 8 246 8710
Fabriano AN 8 31480 40190
Mergo AN 11 1037 41227
Apiro MC 12 2280 43507
Sassoferrato AN 12 7285 50792
Cupramontana AN 13 4756 55548
Rosora AN 13 1985 57533
Arcevia AN 14 4612 62145
Matelica MC 14 9981 72126
Castelplanio AN 15 3540 75666
Esanatoglia MC 15 2034 77700
Maiolati Spontini AN 15 6248 83948
Poggio San Marcello AN 16 693 84641
Monte Roberto AN 17 3061 87702
Montecarotto AN 17 1987 89689
Staffolo AN 17 2253 91942
San Paolo di Jesi AN 17 933 92875
Gagliole MC 17 620 93495
Castelbellino AN 17 4947 98442
Serra de' Conti AN 18 3746 102188
Cingoli MC 19 10352 112540

Municipalities with at least 50000 inhabitants

An earthquake occurred to
50 Km SW of Ancona (100861 inhabitants)
51 Km S of Fano (60888 inhabitants)
53 Km NE of Foligno (57155 inhabitants)
57 Km NE of Perugia (166134 inhabitants)
59 Km S of Pesaro (94582 inhabitants)
83 Km SE of Rimini (147750 inhabitants)
90 Km E of Arezzo (99543 inhabitants)
96 Km N of Terni (111501 inhabitants)
100 Km NW of Teramo (54892 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 2020-12-21
09:44:58		 43.3845 12.9862 1 2021-02-26
14:56:14		 Bollettino Sismico Italiano INGV 86124301
Reviewed
Rev100 		ML 1.5 2020-12-21
09:44:58		 43.4147 13.0043 9 2020-12-21
09:53:35		 Sala Sismica INGV-Roma 85597141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-21 09:44:58 ± 0.1
Latitude 43.3845 ± 0.0063
Longitude 12.9862 ± 0.0087
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 86124301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 770
Semi-minor axis of confidence ellipse (meter) 600
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 237
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.05756
Epicentral distance of station farthest from the epicenter (degree) 0.55848
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 85597141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-21 09:53:35

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 86124301
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-27 19:38:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2020-12-21T09:45:09.44 0.1 undecidable manual P 170 61.9935 50 -1.18 61
IV.ATVO.HHZ. 2020-12-21T09:45:07.26 0.3 undecidable manual P 270 46.7199 91 -0.39 65
IV.MURB.HHZ. 2020-12-21T09:45:06.32 0.3 undecidable manual P 250 39.627 91 0.09 70
IV.CESI.HHZ. 2020-12-21T09:45:06.49 0.3 undecidable manual P 189 42.624 91 -0.35 66
IV.FDMO.HHZ. 2020-12-21T09:45:05.83 0.1 undecidable manual P 168 39.4272 91 -0.37 88
IV.ATFO.HHN. 2020-12-21T09:45:05.04 0.6 undecidable manual P 267 33.5442 91 0.03 48
IV.ATCC.EHZ. 2020-12-21T09:45:05.60 0.1 undecidable manual P 232 35.6421 91 0.17 93
IV.NARO.HHN. 2020-12-21T09:45:05.92 0.3 undecidable manual P 308 41.1255 91 -0.62 61
IV.ATBU.EHZ. 2020-12-21T09:45:05.63 0.3 undecidable manual P 286 36.741 91 -0.02 72
IV.CSP1.EHZ. 2020-12-21T09:45:05.39 0.3 undecidable manual P 151 36.9297 91 -0.31 67
IV.MML1.HNE. 2020-12-21T09:45:04.44 0.1 undecidable manual P 182 30.0477 91 0.12 95
IV.PF6.EHN. 2020-12-21T09:45:04.61 0.6 undecidable manual P 148 32.1456 91 -0.12 47
IV.MPAG.EHZ. 2020-12-21T09:45:04.43 0.3 undecidable manual P 326 32.745 91 -0.42 66
IV.COR1.HNZ. 2020-12-21T09:45:04.13 0.3 undecidable manual P 2 27.4503 91 0.33 68
IV.ATSC.EHZ. 2020-12-21T09:45:03.24 0.1 undecidable manual P 280 24.5532 91 0.03 97
IV.FOSV.EHZ. 2020-12-21T09:45:02.83 0.1 undecidable manual P 241 20.6682 91 0.39 91
IV.SSFR.HHZ. 2020-12-21T09:45:02.07 0.1 undecidable manual P 289 17.3715 92 0.29 93
IV.SNTG.HHZ. 2020-12-21T09:45:02.08 0.1 negative manual P 194 14.874 92 0.81 79
IV.CING.HNZ. 2020-12-21T09:45:01.84 0.1 undecidable manual P 93 16.872 92 0.16 96
IV.ARVD.HHZ. 2020-12-21T09:45:00.93 0.1 positive manual P 344 13.0758 92 0.01 100
IV.EL6.EHZ. 2020-12-21T09:45:00.94 0.1 positive manual P 123 11.1777 93 0.41 92
IV.MMUR.HNZ. 2020-12-21T09:44:59.63 0.1 undecidable manual P 8 6.3936 94 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHN. ML:1.1 0.0001865 1.8 AML other m 2020-12-21T09:45:04.06
IV.EL6.EHE. ML:1.6 0.0007605 0.3 AML other m 2020-12-21T09:45:05.51
IV.EL6.EHN. ML:1.7 0.0009145 0.42 AML other m 2020-12-21T09:45:05.55
IV.ARVD.HHE. ML:1.3 0.00028900000000000003 0.22 AML other m 2020-12-21T09:45:05.61
IV.SNTG.HNE. ML:1.3 0.00022754295 0.256 AML other m 2020-12-21T09:45:05.81
IV.SNTG.HHE. ML:1.1 0.00016447625 0.2624 AML other m 2020-12-21T09:45:06.93
IV.SSFR.HNN. ML:1.6 0.00041360485 0.1728 AML other m 2020-12-21T09:45:06.84
IV.FOSV.EHN. ML:1.3 0.00016949999999999997 1.76 AML other m 2020-12-21T09:45:06.06
IV.SNTG.HHN. ML:1.2 0.00017652374999999997 0.1984 AML other m 2020-12-21T09:45:07.12
IV.FOSV.EHE. ML:1.2 0.00014350000000000002 1.8 AML other m 2020-12-21T09:45:07.03
IV.SNTG.HNN. ML:1.5 0.00036891115 0.2496 AML other m 2020-12-21T09:45:07.11
IV.SSFR.HHN. ML:1.7 0.000448 0.28 AML other m 2020-12-21T09:45:08.65
IV.SSFR.HNE. ML:1.6 0.0004128189 0.2432 AML other m 2020-12-21T09:45:08.65
IV.SSFR.HHE. ML:1.6 0.00041049999999999995 0.24 AML other m 2020-12-21T09:45:08.65
IV.MPAG.EHE. ML:1.0 0.000049106604999999995 0.256 AML other m 2020-12-21T09:45:12.15
IV.ATCC.EHN. ML:1.8 0.00026749999999999994 0.2 AML other m 2020-12-21T09:45:12.32
IV.ATCC.EHE. ML:2.0 0.0003885 0.22 AML other m 2020-12-21T09:45:12.48
IV.MPAG.EHN. ML:1.1 0.00006075 0.26 AML other m 2020-12-21T09:45:13.50
IV.FDMO.HHE. ML:1.6 0.00013309999999999998 0.22 AML other m 2020-12-21T09:45:13.47
IV.FDMO.HHN. ML:1.4 0.000095666265 0.1792 AML other m 2020-12-21T09:45:13.99
IV.MURB.HHE. ML:2.2 0.0006571496999999999 0.2432 AML other m 2020-12-21T09:45:14.21
IV.MURB.HNE. ML:2.2 0.00057764765 0.256 AML other m 2020-12-21T09:45:14.22
IV.CSP1.EHE. ML:1.6 0.00015300000000000003 0.32 AML other m 2020-12-21T09:45:14.45
IV.MURB.HNN. ML:1.9 0.00028849999999999997 0.26 AML other m 2020-12-21T09:45:14.79
IV.MURB.HHN. ML:2.0 0.000329 0.24 AML other m 2020-12-21T09:45:14.79
IV.ASSB.HHE. ML:1.5 0.00008879999999999999 0.28 AML other m 2020-12-21T09:45:15.38
IV.CESI.HHE. ML:1.3 0.000061921455 0.2176 AML other m 2020-12-21T09:45:16.16
IV.CSP1.EHN. ML:1.6 0.00015135 0.42 AML other m 2020-12-21T09:45:17.04
IV.ATVO.HHE. ML:1.3 0.00005485 0.26 AML other m 2020-12-21T09:45:17.69
IV.ATVO.HHN. ML:1.1 0.00003805 0.24 AML other m 2020-12-21T09:45:19.23
IV.ASSB.HHN. ML:1.5 0.0000847 0.26 AML other m 2020-12-21T09:45:19.75
IV.CESI.HHN. ML:1.4 0.0000734 0.3 AML other m 2020-12-21T09:45:19.64
IV.NRCA.HHN. ML:1.6 0.00009115 0.16 AML other m 2020-12-21T09:45:20.26
IV.NRCA.HHE. ML:1.5 0.00006448925999999999 0.16 AML other m 2020-12-21T09:45:20.99
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