Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 18-05-2021 and time 08:27:43 (UTC) in region 1 km NW Gubbio (PG)

A magnitude ML 0.7 earthquake occured in region: 1 km NW Gubbio (PG), on

  • 18-05-2021 08:27:43 (UTC)
  • 18-05-2021 10:27:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3630, 12.5700 at 4 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 1 32216 32216
Scheggia e Pascelupo PG 9 1393 33609
Costacciaro PG 12 1216 34825
Cantiano PU 13 2245 37070
Pietralunga PG 14 2111 39181
Sigillo PG 14 2404 41585
Fossato di Vico PG 17 2840 44425
Montone PG 20 1680 46105

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NE of Perugia (166134 inhabitants)
47 Km N of Foligno (57155 inhabitants)
57 Km E of Arezzo (99543 inhabitants)
65 Km SW of Fano (60888 inhabitants)
67 Km SW of Pesaro (94582 inhabitants)
78 Km S of Rimini (147750 inhabitants)
82 Km W of Ancona (100861 inhabitants)
89 Km N of Terni (111501 inhabitants)
90 Km SE of Cesena (96758 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 0.7 2021-05-18
08:27:43		 43.3632 12.5703 4 2021-05-18
08:35:37		 Sala Sismica INGV-Roma 90220841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-18 08:27:43 ± 0.1
Latitude 43.3632 ± 0.0036
Longitude 12.5703 ± 0.0049
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90220841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 426
Semi-minor axis of confidence ellipse (meter) 116
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 302
Circular confidence region, given by single value of horizontal uncertainty (meter) 430.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.24731
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 90220841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-18 08:35:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GAVE.HNZ. 2021-05-18T08:28:10.23 3.0 undecidable manual S 0 0
IV.CRTC.HHZ. 2021-05-18T08:27:54.71 3.0 undecidable manual P 1.05 0
IV.FRON.EHZ. 2021-05-18T08:27:51.08 0.1 undecidable manual S 36 21.2676 100 0.17 94
IV.PIEI.HHZ. 2021-05-18T08:27:50.49 0.3 undecidable manual S 352 19.3695 101 0.22 70
IV.ATPC.HHE. 2021-05-18T08:27:49.17 0.1 undecidable manual S 325 15.9729 103 0.06 97
IV.NARO.HHZ. 2021-05-18T08:27:48.54 1.0 negative manual P 2 27.4503 98 -0.45 22
IV.MURB.HHN. 2021-05-18T08:27:48.07 0.3 undecidable manual S 198 11.6772 108 0.38 69
IV.ATLO.EHN. 2021-05-18T08:27:48.38 0.3 undecidable manual S 248 14.1747 105 -0.14 72
IV.TB03.DH2.01 2021-05-18T08:27:48.29 0.3 undecidable manual S 288 13.5753 105 -0.03 74
IV.SSFR.HHN. 2021-05-18T08:27:47.20 0.3 undecidable manual P 64 18.87 101 -0.09 72
IV.PIEI.HHZ. 2021-05-18T08:27:47.16 0.3 undecidable manual P 352 19.3695 101 -0.22 70
IV.ATPI.HNE. 2021-05-18T08:27:47.34 0.1 undecidable manual P 306 16.6722 103 0.49 89
IV.FRON.EHZ. 2021-05-18T08:27:47.55 0.1 positive manual P 36 21.2676 100 -0.2 94
IV.ATPC.HHE. 2021-05-18T08:27:46.57 0.1 undecidable manual P 325 15.9729 103 -0.14 96
IV.TB03.DH2.01 2021-05-18T08:27:46.10 0.1 undecidable manual P 288 13.5753 105 -0.15 96
IV.ATBU.EHE. 2021-05-18T08:27:46.17 0.1 undecidable manual P 352 12.5763 107 0.1 97
IV.ATLO.EHN. 2021-05-18T08:27:46.15 0.1 undecidable manual P 248 14.1747 105 -0.22 95
IV.MURB.HHN. 2021-05-18T08:27:45.93 0.1 undecidable manual P 198 11.6772 108 0.04 98
IV.ATFO.HHZ. 2021-05-18T08:27:44.68 0.1 undecidable manual S 12 0.3996 174 -0.06 100
IV.ATFO.HHZ. 2021-05-18T08:27:44.07 1.0 undecidable manual P 12 0.3996 174 -0.11 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PIEI.HHN. ML:0.7 0.0000407 0.3 AML other m 2021-05-18T08:27:51.23
IV.PIEI.HHE. ML:0.8 0.000057549999999999996 0.82 AML other m 2021-05-18T08:27:51.10
IV.FRON.EHN. ML:0.7 0.00003335 0.52 AML other m 2021-05-18T08:27:53.66
IV.FRON.EHE. ML:0.5 0.0000238 1.46 AML other m 2021-05-18T08:27:53.95
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