Istituto Nazionale di Geofisica e Vulcanologia

Earthquake (quarry blast) with magnitude of ML 0.8 on date 30-04-2021 and time 11:45:13 (Italy) in region 4 km E Piobbico (PU)

A magnitude ML 0.8 (quarry blast) earthquake occured in region: 4 km E Piobbico (PU), on

  • 30-04-2021 09:45:13 (UTC)
  • 30-04-2021 11:45:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5810, 12.5580 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
Piobbico PU 4 2029 2029
Cagli PU 8 8731 10760
Acqualagna PU 10 4393 15153
Urbania PU 10 7099 22252
Apecchio PU 11 1882 24134
Fermignano PU 13 8596 32730
Cantiano PU 13 2245 34975
Peglio PU 14 696 35671
Sant'Angelo in Vado PU 15 4133 39804
Frontone PU 16 1300 41104
Urbino PU 17 15019 56123
Pietralunga PG 18 2111 58234
Lunano PU 19 1527 59761
Mercatello sul Metauro PU 19 1378 61139
Piandimeleto PU 20 2167 63306
Serra Sant'Abbondio PU 20 1027 64333

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km SW of Pesaro (94582 inhabitants)
47 Km SW of Fano (60888 inhabitants)
53 Km S of Rimini (147750 inhabitants)
54 Km N of Perugia (166134 inhabitants)
56 Km E of Arezzo (99543 inhabitants)
67 Km SE of Cesena (96758 inhabitants)
71 Km N of Foligno (57155 inhabitants)
78 Km W of Ancona (100861 inhabitants)
83 Km SE of Forlì (117913 inhabitants)
95 Km SE of Faenza (58541 inhabitants)
97 Km SE of Ravenna (159116 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 0.8 2021-04-30
09:45:13		 43.5813 12.5577 1 2021-07-12
16:55:11		 Bollettino Sismico Italiano INGV 90079801
Reviewed
Rev100 		ML 0.8 2021-04-30
09:45:13		 43.5862 12.5618 5 2021-04-30
10:03:59		 Sala Sismica INGV-Roma 89626431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-30 09:45:13 ± 0.06
Latitude 43.5813 ± 0.0036
Longitude 12.5577 ± 0.0050
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 90079801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 460
Semi-minor axis of confidence ellipse (meter) 370
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 313
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.23832
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 90079801
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-30 10:27:48

ML:0.8

Field Value
Value 0.8
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 89626431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-04-30 10:03:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2021-04-30T09:45:29.48 3.0 undecidable manual Sg 0
IV.CESI.HHZ. 2021-04-30T09:45:29.61 3.0 undecidable manual Sg 0
IV.CESI.HHZ. 2021-04-30T09:45:26.66 3.0 undecidable manual P 0
IV.FDMO.HHZ. 2021-04-30T09:45:26.49 3.0 undecidable manual P 0
IV.CSNT.HHZ. 2021-04-30T09:45:24.82 3.0 undecidable manual P 0
IV.ATFO.HHZ. 2021-04-30T09:45:18.29 0.3 undecidable manual P 177 23.8539 91 -0.11 72
IV.SSFR.HNN. 2021-04-30T09:45:18.26 0.1 undecidable manual P 132 24.1536 91 -0.21 94
IV.BADI.EHZ. 2021-04-30T09:45:18.66 0.3 undecidable manual P 253 26.4513 91 -0.25 69
IV.ATPI.EHZ. 2021-04-30T09:45:17.70 0.3 undecidable manual P 221 19.1697 91 0.24 70
IV.MPAG.EHZ. 2021-04-30T09:45:17.09 0.3 undecidable manual P 72 17.0718 92 0.05 74
IV.PE3.EHN. 2021-04-30T09:45:16.51 0.3 undecidable manual P 339 13.6752 92 0.16 72
IV.ATBU.HNE. 2021-04-30T09:45:16.19 0.1 undecidable manual P 184 11.7771 92 0.22 96
IV.FRON.EHZ. 2021-04-30T09:45:16.77 0.1 undecidable manual P 117 15.2736 92 0.09 97
IV.ATPC.HNE. 2021-04-30T09:45:16.52 0.1 undecidable manual P 216 13.7751 92 0.14 97
IV.APEC.HNN. 2021-04-30T09:45:15.77 0.3 undecidable manual P 257 11.3775 93 -0.13 73
IV.PIEI.HHZ. 2021-04-30T09:45:14.55 0.1 undecidable manual P 200 5.3946 95 -0.15 98
IV.NARO.HHZ. 2021-04-30T09:45:14.32 0.1 undecidable manual P 29 3.7962 98 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.HNN. ML:0.8 0.000060884995 0.6016 AML other m 2021-04-30T09:45:20.94
IV.MPAG.EHE. ML:0.2 0.000015285 1.3 AML other m 2021-04-30T09:45:21.30
IV.ATPI.EHE. ML:0.2 0.000013496033500000001 0.3584 AML other m 2021-04-30T09:45:21.62
IV.MPAG.EHN. ML:0.3 0.0000176 1.24 AML other m 2021-04-30T09:45:22.08
IV.FRON.EHN. ML:0.6 0.0000443 1.04 AML other m 2021-04-30T09:45:22.44
IV.FRON.EHE. ML:0.5 0.00003635 1.22 AML other m 2021-04-30T09:45:23.67
IV.FDMO.HHN. ML:1.0 0.00001435 0.36 AML other m 2021-04-30T09:45:29.54
IV.CESI.HHE. ML:1.1 0.000021949999999999998 0.3 AML other m 2021-04-30T09:45:29.72
IV.CESI.HHN. ML:1.6 0.000058 0.12 AML other m 2021-04-30T09:45:29.60
IV.FDMO.HHE. ML:1.1 0.0000184 0.42 AML other m 2021-04-30T09:45:29.65
IV.CSNT.HHN. ML:1.0 0.000009739666000000001 0.0768 AML other m 2021-04-30T09:45:33.76
IV.CSNT.HHE. ML:1.2 0.000013528825500000001 0.0832 AML other m 2021-04-30T09:45:33.81
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