Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 26-05-2021 and time 23:51:01 (Italy) in region 11 km S Gubbio (PG)

A magnitude ML 0.4 earthquake occured in region: 11 km S Gubbio (PG), on

  • 26-05-2021 21:51:01 (UTC)
  • 26-05-2021 23:51:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2590, 12.6110 at 10 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 11 32216 32216
Valfabbrica PG 11 3389 35605
Fossato di Vico PG 13 2840 38445
Sigillo PG 13 2404 40849
Costacciaro PG 14 1216 42065
Gualdo Tadino PG 14 15208 57273
Scheggia e Pascelupo PG 17 1393 58666

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NE of Perugia (166134 inhabitants)
34 Km N of Foligno (57155 inhabitants)
63 Km E of Arezzo (99543 inhabitants)
73 Km SW of Fano (60888 inhabitants)
77 Km SW of Pesaro (94582 inhabitants)
78 Km N of Terni (111501 inhabitants)
84 Km W of Ancona (100861 inhabitants)
89 Km S of Rimini (147750 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 0.4 2021-05-26
21:51:01		 43.2588 12.6113 10 2021-05-26
21:55:32		 Sala Sismica INGV-Roma 90520001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-26 21:51:01 ± 0.05
Latitude 43.2588 ± 0.0027
Longitude 12.6113 ± 0.0049
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90520001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 327
Semi-minor axis of confidence ellipse (meter) 271
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 103
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) 103
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) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.06295
Epicentral distance of station farthest from the epicenter (degree) 0.28239
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 90520001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-26 21:55:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2021-05-26T21:51:13.26 0.6 undecidable manual S 349 31.3464 50 0.22 46
IV.FRON.EHZ. 2021-05-26T21:51:12.51 0.6 undecidable manual S 18 30.1476 50 -0.22 46
IV.SSFR.HHZ. 2021-05-26T21:51:11.05 0.6 undecidable manual S 35 24.0537 112 0.06 49
IV.ASSB.HHZ. 2021-05-26T21:51:11.06 0.6 undecidable manual S 171 24.2535 112 -0.01 49
IV.ATLO.EHZ. 2021-05-26T21:51:08.97 0.6 undecidable manual S 291 17.6712 119 -0.02 50
IV.PIEI.HHZ. 2021-05-26T21:51:08.78 1.0 undecidable manual P 349 31.3464 50 0.42 22
IV.FRON.EHZ. 2021-05-26T21:51:07.97 1.0 negative manual P 18 30.1476 50 -0.21 23
IV.SSFR.HHZ. 2021-05-26T21:51:07.10 0.6 positive manual P 35 24.0537 112 -0.08 48
IV.ASSB.HHZ. 2021-05-26T21:51:07.15 0.3 undecidable manual P 171 24.2535 112 -0.08 73
IV.ATCC.EHZ. 2021-05-26T21:51:06.61 0.6 undecidable manual S 164 8.4804 139 0.1 49
IV.ATLO.EHZ. 2021-05-26T21:51:05.97 0.6 undecidable manual P 291 17.6712 119 -0.05 49
IV.FOSV.EHZ. 2021-05-26T21:51:05.21 1.0 undecidable manual P 72 12.7761 128 0.01 25
IV.MURB.HHZ. 2021-05-26T21:51:04.34 0.1 undecidable manual P 274 6.993 145 -0.06 100
IV.ATCC.EHZ. 2021-05-26T21:51:04.70 0.6 positive manual P 164 8.4804 139 0.12 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHN. ML:0.3 0.00002468144 0.1408 AML other m 2021-05-26T21:51:08.47
IV.ATCC.EHE. ML:0.6 0.00005085 0.48 AML other m 2021-05-26T21:51:09.68
IV.ASSB.HHE. ML:0.6 0.000023149999999999997 0.24 AML other m 2021-05-26T21:51:11.41
IV.ASSB.HHN. ML:0.5 0.0000194 0.18 AML other m 2021-05-26T21:51:11.53
IV.SSFR.HHN. ML:0.5 0.000020799999999999997 0.62 AML other m 2021-05-26T21:51:12.56
IV.SSFR.HHE. ML:0.4 0.00001711267 0.1536 AML other m 2021-05-26T21:51:12.12
IV.PIEI.HHE. ML:0.3 0.000012 0.8 AML other m 2021-05-26T21:51:14.44
IV.PIEI.HHN. ML:0.0 0.0000054561395 0.1152 AML other m 2021-05-26T21:51:14.37
IV.SSFR.HNE. ML:1.2 0.0001112485 0.64 AML other m 2021-05-26T21:51:20.98
IV.SSFR.HNN. ML:1.2 0.00010088567999999999 0.4224 AML other m 2021-05-26T21:51:16.73
IV.FRON.EHE. ML:0.0 0.000007046264 0.1024 AML other m 2021-05-26T21:51:13.20
IV.FRON.EHN. ML:0.3 0.000010442922 0.1024 AML other m 2021-05-26T21:51:13.11
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