Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 17-10-2021 and time 10:10:43 (UTC) in region 3 km NE Pioraco (MC)

A magnitude ML 0.9 earthquake occured in region: 3 km NE Pioraco (MC), on

  • 17-10-2021 10:10:43 (UTC)
  • 17-10-2021 12:10:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1990, 13.0120 at 11 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
Pioraco MC 3 1134 1134
Castelraimondo MC 4 4587 5721
Fiuminata MC 7 1402 7123
Matelica MC 7 9981 17104
Gagliole MC 7 620 17724
Sefro MC 8 422 18146
Esanatoglia MC 8 2034 20180
Camerino MC 8 6974 27154
Muccia MC 13 915 28069
Cerreto d'Esi AN 14 3817 31886
San Severino Marche MC 14 12726 44612
Serrapetrona MC 15 966 45578
Serravalle di Chienti MC 15 1070 46648
Pievebovigliana MC 16 866 47514
Pieve Torina MC 17 1458 48972
Fabriano AN 18 31480 80452
Caldarola MC 19 1823 82275
Gualdo Tadino PG 19 15208 97483
Belforte del Chienti MC 19 1886 99369
Fiordimonte MC 19 202 99571

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NE of Foligno (57155 inhabitants)
52 Km E of Perugia (166134 inhabitants)
62 Km SW of Ancona (100861 inhabitants)
72 Km S of Fano (60888 inhabitants)
77 Km NE of Terni (111501 inhabitants)
80 Km S of Pesaro (94582 inhabitants)
82 Km NW of Teramo (54892 inhabitants)
96 Km E of Arezzo (99543 inhabitants)
99 Km NW of L'Aquila (69753 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 0.9 2021-10-17
10:10:43		 43.1993 13.0118 11 2022-03-30
13:04:13		 Bollettino Sismico Italiano INGV 96877531
Reviewed
Rev100 		ML 1.1 2021-10-17
10:10:43		 43.201 13.0092 12 2021-10-17
10:34:55		 Sala Sismica INGV-Roma 96678441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-17 10:10:43 ± 0.05
Latitude 43.1993 ± 0.0036
Longitude 13.0118 ± 0.0062
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96877531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 490
Semi-minor axis of confidence ellipse (meter) 350
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 286
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 90
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.07644
Epicentral distance of station farthest from the epicenter (degree) 0.48294
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 96877531
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-22 12:35:38

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 96678441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-17 10:34:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2021-10-17T10:11:00.65 0.1 undecidable manual S 314 53.6019 90 0.2 88
IV.MURB.HHZ. 2021-10-17T10:10:57.11 0.1 undecidable manual S 280 40.0266 90 0.28 89
IV.ASSB.HHZ. 2021-10-17T10:10:55.00 0.3 undecidable manual S 239 33.4443 90 -0.08 72
IV.MC2.EHZ. 2021-10-17T10:10:55.99 0.3 undecidable manual S 156 35.0427 90 0.5 65
IV.CESI.HHZ. 2021-10-17T10:10:52.35 0.1 undecidable manual S 202 23.2545 90 0 97
IV.CING.HNZ. 2021-10-17T10:10:52.86 0.1 undecidable manual S 37 24.5532 90 0.17 95
IV.PIEI.HHZ. 2021-10-17T10:10:52.98 0.1 undecidable manual P 314 53.6019 90 -0.38 86
IV.MURB.HHZ. 2021-10-17T10:10:51.32 0.1 undecidable manual P 280 40.0266 90 0.05 93
IV.CSP1.EHZ. 2021-10-17T10:10:51.38 0.1 undecidable manual S 127 19.6692 90 -0.01 98
IV.FDMO.HHZ. 2021-10-17T10:10:51.14 0.3 undecidable manual S 161 19.0698 90 -0.09 72
IV.EL6.EHZ. 2021-10-17T10:10:50.59 0.1 undecidable manual S 27 16.1727 90 0.14 97
IV.ASSB.HHZ. 2021-10-17T10:10:50.04 0.3 negative manual P 239 33.4443 90 -0.23 69
IV.MC2.EHZ. 2021-10-17T10:10:50.49 0.6 negative manual P 156 35.0427 90 -0.01 48
IV.MML1.EHZ. 2021-10-17T10:10:49.12 0.3 undecidable manual S 199 10.0788 119 0.24 71
IV.SNTG.HHZ. 2021-10-17T10:10:48.51 0.1 undecidable manual S 317 8.4804 128 -0.01 100
IV.CSP1.EHZ. 2021-10-17T10:10:48.10 0.1 undecidable manual P 127 19.6692 90 -0.03 98
IV.CESI.HHZ. 2021-10-17T10:10:48.53 0.1 undecidable manual P 202 23.2545 90 -0.16 95
IV.FOSV.EHZ. 2021-10-17T10:10:48.42 0.1 undecidable manual P 298 22.8549 90 -0.21 94
IV.CING.HNZ. 2021-10-17T10:10:48.28 0.1 undecidable manual P 37 24.5532 90 -0.6 84
IV.EL6.EHZ. 2021-10-17T10:10:47.59 0.1 undecidable manual P 27 16.1727 90 0 99
IV.FDMO.HHZ. 2021-10-17T10:10:47.88 0.6 undecidable manual P 161 19.0698 90 -0.17 48
IV.SNTG.HHZ. 2021-10-17T10:10:46.54 0.1 undecidable manual P 317 8.4804 128 0.06 99
IV.MML1.EHZ. 2021-10-17T10:10:46.77 0.1 undecidable manual P 199 10.0788 119 0.08 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SNTG.HHE. ML:0.9 0.00009595 0.06 AML other m 2021-10-17T10:10:48.74
IV.SNTG.HNE. ML:1.0 0.00013861738 0.7552 AML other m 2021-10-17T10:10:49.91
IV.SNTG.HNN. ML:1.1 0.00015425025 1.2288 AML other m 2021-10-17T10:10:51.76
IV.SNTG.HHN. ML:0.9 0.00010685 0.08 AML other m 2021-10-17T10:10:48.87
IV.FDMO.HHN. ML:1.1 0.00010105 0.14 AML other m 2021-10-17T10:10:51.42
IV.FDMO.HHE. ML:1.2 0.00011365 0.18 AML other m 2021-10-17T10:10:51.33
IV.MML1.HNE. ML:0.9 0.00009984296 0.7104 AML other m 2021-10-17T10:10:51.03
IV.MML1.EHN. ML:0.5 0.000038989485 0.1408 AML other m 2021-10-17T10:10:50.36
IV.MML1.EHE. ML:0.5 0.0000386467835 0.1792 AML other m 2021-10-17T10:10:49.51
IV.MML1.HNN. ML:1.0 0.000130377325 0.7808 AML other m 2021-10-17T10:10:50.91
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