Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 09-09-2021 and time 18:30:26 (UTC) in region 4 km W Cantiano (PU)

A magnitude ML 0.5 earthquake occured in region: 4 km W Cantiano (PU), on

  • 09-09-2021 18:30:26 (UTC)
  • 09-09-2021 20:30:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4580, 12.5770 at 13 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Cantiano PU 5 2245 2245
Scheggia e Pascelupo PG 10 1393 3638
Pietralunga PG 11 2111 5749
Cagli PU 12 8731 14480
Gubbio PG 12 32216 46696
Frontone PU 15 1300 47996
Costacciaro PG 16 1216 49212
Piobbico PU 16 2029 51241
Serra Sant'Abbondio PU 16 1027 52268
Apecchio PU 17 1882 54150
Acqualagna PU 19 4393 58543
Sigillo PG 19 2404 60947

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km NE of Perugia (166134 inhabitants)
56 Km SW of Fano (60888 inhabitants)
56 Km E of Arezzo (99543 inhabitants)
57 Km N of Foligno (57155 inhabitants)
57 Km SW of Pesaro (94582 inhabitants)
67 Km S of Rimini (147750 inhabitants)
78 Km W of Ancona (100861 inhabitants)
80 Km SE of Cesena (96758 inhabitants)
95 Km SE of Forlì (117913 inhabitants)
100 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
Reviewed
Rev100 		ML 0.5 2021-09-09
18:30:26		 43.4583 12.5773 13 2021-09-09
18:58:45		 Sala Sismica INGV-Roma 95244081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-09 18:30:26 ± 0.08
Latitude 43.4583 ± 0.0027
Longitude 12.5773 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95244081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 329
Semi-minor axis of confidence ellipse (meter) 52
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 332
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
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 36
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.21584
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.4
Num. used stations 11
Type of magnitude ML
Reference to an origin 95244081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-09 18:58:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SGO.HHZ. 2021-09-09T18:32:15.45 3.0 undecidable manual Sg 8.22 0
AC.VLO.HHZ. 2021-09-09T18:32:14.12 3.0 positive manual Pg 17.290001 0
GU.RNCA.HHZ. 2021-09-09T18:31:51.61 3.0 undecidable manual Sn 0.06 0
IV.MSSA.HHZ. 2021-09-09T18:31:44.30 3.0 undecidable manual Sg 3.38 0
CR.STON.BHZ. 2021-09-09T18:31:38.14 3.0 undecidable manual Pg 11.23 0
IV.PTRP.HHZ. 2021-09-09T18:31:35.27 3.0 undecidable manual Pg 6.36 0
IX.COL3.HHZ.02 2021-09-09T18:31:34.83 3.0 undecidable manual Pg 12.36 0
IV.MILN.HNZ. 2021-09-09T18:31:30.95 3.0 negative manual Pg 11.66 0
IV.VARE.HHZ. 2021-09-09T18:31:30.75 3.0 positive manual Pn 4.66 0
CR.ZAG.BHZ. 2021-09-09T18:31:29.80 3.0 undecidable manual Pg 8.14 0
IV.GIUL.HHZ. 2021-09-09T18:31:25.10 3.0 undecidable manual Sn -4.16 0
IV.VBKN.HHZ. 2021-09-09T18:31:13.41 3.0 undecidable manual Pn -2.59 0
MN.TRI.HHZ. 2021-09-09T18:31:05.67 3.0 undecidable manual Pn -2.68 0
IV.NDIM.HNZ. 2021-09-09T18:31:02.68 3.0 negative manual Pg 0.83 0
IV.ZCCA.HHZ. 2021-09-09T18:30:53.94 3.0 undecidable manual P -2.42 0
IV.TERO.HHZ. 2021-09-09T18:30:51.18 3.0 undecidable manual P 0.81 0
IV.MNTT.EHZ. 2021-09-09T18:30:45.23 3.0 positive manual P 0.33 0
IV.ATPI.EHZ. 2021-09-09T18:30:33.22 0.3 undecidable manual S 267 14.1747 117 -0.09 74
IV.FRON.EHZ. 2021-09-09T18:30:33.07 0.1 undecidable manual S 61 13.6752 118 -0.12 98
IV.ATVO.HHZ. 2021-09-09T18:30:33.57 0.3 undecidable manual S 238 16.1727 111 -0.23 72
IV.NARO.HHZ. 2021-09-09T18:30:33.81 0.3 undecidable manual S 1 16.872 109 -0.18 72
IV.TB01.DHZ.01 2021-09-09T18:30:33.23 0.3 undecidable manual S 233 14.2746 116 -0.11 74
IV.MPAG.EHZ. 2021-09-09T18:30:32.12 0.1 undecidable manual P 38 23.9538 100 0.06 97
IV.ATPC.HNZ. 2021-09-09T18:30:32.40 0.3 undecidable manual S 284 9.9789 131 0.01 75
IV.ATSC.EHZ. 2021-09-09T18:30:32.19 0.3 undecidable manual S 113 9.5793 133 -0.12 74
IV.ATFO.HHZ. 2021-09-09T18:30:32.25 0.1 undecidable manual S 183 10.1787 130 -0.18 97
IV.ATBU.EHZ. 2021-09-09T18:30:31.62 0.3 undecidable manual S 310 2.997 163 0.24 74
IV.ATFO.HHZ. 2021-09-09T18:30:30.18 0.1 undecidable manual P 183 10.1787 130 0.08 99
IV.TB01.DHZ.01 2021-09-09T18:30:30.66 0.1 undecidable manual P 233 14.2746 116 0.03 99
IV.ATPI.EHZ. 2021-09-09T18:30:30.72 0.1 undecidable manual P 267 14.1747 117 0.11 98
IV.FRON.EHZ. 2021-09-09T18:30:30.59 0.1 undecidable manual P 61 13.6752 118 0.05 99
IV.ATVO.HHZ. 2021-09-09T18:30:30.93 0.1 undecidable manual P 238 16.1727 111 0.04 99
IV.ATPC.HNZ. 2021-09-09T18:30:30.20 0.1 undecidable manual P 284 9.9789 131 0.12 98
IV.NARO.HHZ. 2021-09-09T18:30:30.88 0.1 undecidable manual P 1 16.872 109 -0.12 98
IV.ATSC.EHZ. 2021-09-09T18:30:30.08 0.1 undecidable manual P 113 9.5793 133 0.05 100
IV.ATBU.EHZ. 2021-09-09T18:30:29.69 0.1 undecidable manual P 310 2.997 163 0.19 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATFO.HHN. ML:0.6 0.000043945015 0.0896 AML other m 2021-09-09T18:30:32.47
IV.ATFO.HHE. ML:0.7 0.00004875 0.1 AML other m 2021-09-09T18:30:32.46
IV.ATPI.EHN. ML:0.4 0.0000204 0.52 AML other m 2021-09-09T18:30:33.55
IV.ATPI.EHE. ML:0.4 0.000020850000000000002 0.18 AML other m 2021-09-09T18:30:33.29
IV.ATVO.HHN. ML:0.1 0.000011949999999999999 0.34 AML other m 2021-09-09T18:30:33.64
IV.ATVO.HHE. ML:0.1 0.0000119653485 0.2176 AML other m 2021-09-09T18:30:33.75
IV.ATCC.EHE. ML:1.5 0.00014415 0.24 AML other m 2021-09-09T18:30:45.35
IV.ASSB.HHN. ML:1.0 0.000024550000000000004 0.54 AML other m 2021-09-09T18:30:49.50
IV.ASSB.HHE. ML:1.0 0.00002255 0.46 AML other m 2021-09-09T18:30:50.69
IV.NARO.HHE. ML:0.3 0.000013969485 0.0768 AML other m 2021-09-09T18:30:34.05
IV.NARO.HHN. ML:0.1 0.000010653204999999999 0.0768 AML other m 2021-09-09T18:30:34.10
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