Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 1.2 on date 26-11-2020 and time 09:22:58 (UTC) in region 6 km SE Genga (AN)

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

  • 26-11-2020 09:22:58 (UTC)
  • 26-11-2020 10:22:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3900, 12.9780 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
Serra San Quirico AN 7 2850 4647
Cerreto d'Esi AN 8 3817 8464
Fabriano AN 8 31480 39944
Poggio San Vicino MC 8 246 40190
Mergo AN 10 1037 41227
Sassoferrato AN 11 7285 48512
Apiro MC 13 2280 50792
Arcevia AN 13 4612 55404
Rosora AN 13 1985 57389
Cupramontana AN 13 4756 62145
Castelplanio AN 15 3540 65685
Matelica MC 15 9981 75666
Maiolati Spontini AN 15 6248 81914
Esanatoglia MC 16 2034 83948
Poggio San Marcello AN 16 693 84641
Monte Roberto AN 17 3061 87702
Montecarotto AN 17 1987 89689
San Paolo di Jesi AN 18 933 90622
Castelbellino AN 18 4947 95569
Staffolo AN 18 2253 97822
Serra de' Conti AN 18 3746 101568
Gagliole MC 18 620 102188
Cingoli MC 19 10352 112540

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 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)
58 Km S of Pesaro (94582 inhabitants)
82 Km SE of Rimini (147750 inhabitants)
89 Km E of Arezzo (99543 inhabitants)
96 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 2020-11-26
09:22:58		 43.3897 12.9778 1 2021-02-26
14:56:09		 Bollettino Sismico Italiano INGV 85149721
Reviewed
Rev100 		ML 1.3 2020-11-26
09:22:57		 43.4152 13.0247 9 2020-11-26
10:21:18		 Sala Sismica INGV-Roma 85029891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-26 09:22:58 ± 0.11
Latitude 43.3897 ± 0.0072
Longitude 12.9778 ± 0.0099
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 85149721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 910
Semi-minor axis of confidence ellipse (meter) 680
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 910.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.41459
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 19
Type of magnitude ML
Reference to an origin 85149721
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-30 02:40:35

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 85029891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-26 10:21:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATVO.HHZ. 2020-11-26T09:23:07.02 0.3 undecidable manual P 269 46.0206 91 -0.42 65
IV.CSP1.EHZ. 2020-11-26T09:23:05.32 0.3 undecidable manual P 151 37.8288 91 -0.47 65
IV.NARO.HHZ. 2020-11-26T09:23:05.76 0.3 undecidable manual P 308 40.3263 91 -0.53 64
IV.ATCC.EHZ. 2020-11-26T09:23:05.48 0.1 undecidable manual P 230 35.5422 91 0.16 93
IV.FDMO.HHZ. 2020-11-26T09:23:05.71 0.3 undecidable manual P 167 40.1265 91 -0.55 63
IV.COR1.HNN. 2020-11-26T09:23:04.07 0.3 undecidable manual P 4 26.9508 91 0.46 66
IV.MPAG.EHZ. 2020-11-26T09:23:04.20 0.1 undecidable manual P 327 31.8459 91 -0.4 89
IV.FRON.EHZ. 2020-11-26T09:23:03.18 0.1 undecidable manual P 305 24.753 91 0 98
IV.SSFR.HNZ. 2020-11-26T09:23:02.05 0.1 undecidable manual P 288 16.5723 92 0.51 89
IV.SNTG.HHZ. 2020-11-26T09:23:01.84 0.1 undecidable manual P 191 15.2736 92 0.57 87
IV.CING.HNZ. 2020-11-26T09:23:01.76 0.1 undecidable manual P 95 17.5713 92 0.02 99
IV.ARVD.HHZ. 2020-11-26T09:23:00.73 0.1 positive manual P 346 12.3765 92 0.04 99
IV.EL6.EHZ. 2020-11-26T09:23:00.74 0.1 undecidable manual P 124 11.9769 92 0.11 98
IV.MMUR.HNE. 2020-11-26T09:22:59.47 0.1 undecidable manual P 15 5.994 95 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHE. ML:1.0 0.00013956954999999998 0.1216 AML other m 2020-11-26T09:23:03.32
IV.ARVD.HHN. ML:0.9 0.0001212597 0.1216 AML other m 2020-11-26T09:23:04.02
IV.EL6.EHE. ML:1.6 0.0006080094 0.3776 AML other m 2020-11-26T09:23:04.82
IV.SNTG.HHN. ML:1.3 0.00020955315000000001 0.2624 AML other m 2020-11-26T09:23:05.11
IV.SNTG.HNE. ML:1.4 0.00030777785000000004 0.2112 AML other m 2020-11-26T09:23:05.27
IV.SNTG.HHE. ML:1.4 0.00029218280000000004 0.1984 AML other m 2020-11-26T09:23:05.37
IV.SNTG.HNN. ML:1.3 0.00024003385 0.2496 AML other m 2020-11-26T09:23:05.72
IV.EL6.EHN. ML:1.6 0.0005719160999999999 0.4224 AML other m 2020-11-26T09:23:05.94
IV.FRON.EHN. ML:1.0 0.00006918439500000001 0.2368 AML other m 2020-11-26T09:23:08.07
IV.FRON.EHE. ML:0.9 0.0000499186 0.4608 AML other m 2020-11-26T09:23:08.63
IV.MPAG.EHN. ML:0.8 0.00002826886 0.3392 AML other m 2020-11-26T09:23:10.42
IV.ATCC.EHN. ML:1.4 0.000097304185 0.48 AML other m 2020-11-26T09:23:12.08
IV.FDMO.HHE. ML:1.2 0.00005927386 0.2048 AML other m 2020-11-26T09:23:13.32
IV.ATCC.EHE. ML:1.4 0.000103036605 0.384 AML other m 2020-11-26T09:23:13.21
IV.CSP1.EHN. ML:1.5 0.000129747 0.3392 AML other m 2020-11-26T09:23:13.41
IV.FDMO.HHN. ML:1.2 0.000050452074999999996 0.256 AML other m 2020-11-26T09:23:13.57
IV.CSP1.EHE. ML:1.5 0.00011770571499999999 0.2176 AML other m 2020-11-26T09:23:14.66
IV.ATVO.HHE. ML:1.0 0.00003116803 0.1408 AML other m 2020-11-26T09:23:16.09
IV.ATVO.HHN. ML:0.7 0.000017372079999999998 0.9408 AML other m 2020-11-26T09:23:19.61
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