Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 22-05-2021 and time 09:53:02 (UTC) in region 3 km NW Gubbio (PG)

A magnitude ML 0.8 earthquake occured in region: 3 km NW Gubbio (PG), on

  • 22-05-2021 09:53:02 (UTC)
  • 22-05-2021 11:53:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3660, 12.5520 at 6 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
Gubbio PG 3 32216 32216
Scheggia e Pascelupo PG 10 1393 33609
Pietralunga PG 13 2111 35720
Costacciaro PG 13 1216 36936
Cantiano PU 14 2245 39181
Sigillo PG 16 2404 41585
Montone PG 18 1680 43265
Fossato di Vico PG 19 2840 46105
Umbertide PG 19 16681 62786

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NE of Perugia (166134 inhabitants)
47 Km N of Foligno (57155 inhabitants)
55 Km E of Arezzo (99543 inhabitants)
65 Km SW of Fano (60888 inhabitants)
67 Km SW of Pesaro (94582 inhabitants)
77 Km S of Rimini (147750 inhabitants)
83 Km W of Ancona (100861 inhabitants)
89 Km S of Cesena (96758 inhabitants)
90 Km N of Terni (111501 inhabitants)
99 Km E of Siena (53903 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 0.8 2021-05-22
09:53:02		 43.3662 12.5515 6 2021-05-22
10:08:45		 Sala Sismica INGV-Roma 90369381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-22 09:53:02 ± 0.09
Latitude 43.3662 ± 0.0027
Longitude 12.5515 ± 0.0037
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90369381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 340
Semi-minor axis of confidence ellipse (meter) 21
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 54
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.24551
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 90369381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-22 10:08:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHZ. 2021-05-22T09:53:27.62 3.0 undecidable manual S -0.73 0
IV.PIEI.HHZ. 2021-05-22T09:53:10.05 0.6 undecidable manual S 356 18.87 108 0.38 45
IV.ATCC.EHZ. 2021-05-22T09:53:10.69 0.3 undecidable manual S 160 21.3675 106 0.2 70
IV.FOSV.EHZ. 2021-05-22T09:53:09.63 0.3 undecidable manual S 115 18.6702 108 0.01 73
IV.ATPI.EHZ. 2021-05-22T09:53:08.68 0.3 undecidable manual S 308 15.2736 112 0.18 71
IV.NARO.HHZ. 2021-05-22T09:53:08.09 0.3 undecidable manual P 5 27.2505 103 -0.3 68
IV.ATCC.EHZ. 2021-05-22T09:53:07.17 0.3 undecidable manual P 160 21.3675 106 -0.07 72
IV.ATVO.HHZ. 2021-05-22T09:53:07.32 0.3 undecidable manual S 279 11.7771 117 -0.09 72
IV.MURB.HHZ. 2021-05-22T09:53:07.47 0.3 undecidable manual S 191 11.6772 118 0.11 72
IV.ATPI.EHZ. 2021-05-22T09:53:06.04 0.6 undecidable manual P 308 15.2736 112 -0.05 48
IV.FOSV.EHZ. 2021-05-22T09:53:06.68 0.3 undecidable manual P 115 18.6702 108 -0.05 72
IV.PIEI.HHZ. 2021-05-22T09:53:06.88 0.3 undecidable manual P 356 18.87 108 0.12 71
IV.MURB.HHZ. 2021-05-22T09:53:05.39 0.1 positive manual P 191 11.6772 118 -0.04 98
IV.ATVO.HHZ. 2021-05-22T09:53:05.35 0.1 undecidable manual P 279 11.7771 117 -0.11 96
IV.ATFO.HHZ. 2021-05-22T09:53:04.89 0.3 undecidable manual S 88 1.5984 165 -0.1 74
IV.ATFO.HHZ. 2021-05-22T09:53:04.06 0.1 positive manual P 88 1.5984 165 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHN. ML:0.9 0.0001175 0.22 AML other m 2021-05-22T09:53:07.53
IV.ATVO.HHE. ML:0.9 0.0001199 0.34 AML other m 2021-05-22T09:53:07.50
IV.MURB.HHN. ML:1.3 0.0003025 0.26 AML other m 2021-05-22T09:53:07.95
IV.MURB.HHE. ML:1.2 0.00021300000000000003 1.74 AML other m 2021-05-22T09:53:08.10
IV.ATPI.EHN. ML:0.6 0.00004095 0.98 AML other m 2021-05-22T09:53:09.46
IV.ATPI.EHE. ML:0.6 0.0000415 1.16 AML other m 2021-05-22T09:53:09.02
IV.PIEI.HHE. ML:0.8 0.000056149999999999996 0.26 AML other m 2021-05-22T09:53:10.78
IV.PIEI.HHN. ML:0.6 0.0000315 0.66 AML other m 2021-05-22T09:53:11.90
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