Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 30-12-2021 and time 10:49:34 (Italy) in region 3 km E Gubbio (PG)

A magnitude ML 0.9 earthquake occured in region: 3 km E Gubbio (PG), on

  • 30-12-2021 09:49:34 (UTC)
  • 30-12-2021 10:49:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.3500, 12.6140 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 3 32216 32216
Scheggia e Pascelupo PG 8 1393 33609
Costacciaro PG 8 1216 34825
Sigillo PG 11 2404 37229
Fossato di Vico PG 14 2840 40069
Cantiano PU 14 2245 42314
Pietralunga PG 18 2111 44425
Gualdo Tadino PG 19 15208 59633

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NE of Perugia (166134 inhabitants)
44 Km N of Foligno (57155 inhabitants)
60 Km E of Arezzo (99543 inhabitants)
64 Km SW of Fano (60888 inhabitants)
67 Km SW of Pesaro (94582 inhabitants)
79 Km W of Ancona (100861 inhabitants)
79 Km S of Rimini (147750 inhabitants)
88 Km N of Terni (111501 inhabitants)
93 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 0.9 2021-12-30
09:49:34		 43.3497 12.6138 11 2021-12-30
14:36:24		 Sala Sismica INGV-Roma 99153441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-30 09:49:34 ± 0.16
Latitude 43.3497 ± 0.0063
Longitude 12.6138 ± 0.0074
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 99153441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 705
Semi-minor axis of confidence ellipse (meter) 278
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 350
Circular confidence region, given by single value of horizontal uncertainty (meter) 710.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.26170
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 99153441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-30 14:36:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATPI.EHZ. 2021-12-30T09:49:43.17 0.6 undecidable manual S 303 20.3685 117 0.82 39
IV.FRON.EHZ. 2021-12-30T09:49:42.41 3.0 undecidable manual S 0
IV.ATVO.HHZ. 2021-12-30T09:49:41.36 0.6 undecidable manual S 282 17.0718 122 0.02 49
IV.SSFR.HHZ. 2021-12-30T09:49:41.65 0.6 undecidable manual S 55 16.6722 122 0.44 45
IV.TB02.DHZ.01 2021-12-30T09:49:41.57 0.3 undecidable manual S 278 16.6722 122 0.36 69
IV.MURB.HHZ. 2021-12-30T09:49:40.34 0.6 undecidable manual S 217 11.9769 131 0.42 46
IV.NARO.HHZ. 2021-12-30T09:49:40.38 0.1 undecidable manual P 355 29.0487 50 0.02 97
IV.ATPI.EHZ. 2021-12-30T09:49:39.03 0.6 positive manual P 303 20.3685 117 0.05 49
IV.ATSC.EHZ. 2021-12-30T09:49:39.58 0.6 undecidable manual S 35 10.0788 136 0.14 49
IV.ATCC.EHZ. 2021-12-30T09:49:38.71 0.1 undecidable manual P 173 18.3705 120 0.09 97
IV.ATPC.HHZ. 2021-12-30T09:49:38.66 0.1 undecidable manual P 319 19.2696 119 -0.12 96
IV.ATVO.HHZ. 2021-12-30T09:49:38.40 0.6 negative manual P 282 17.0718 122 0 50
IV.SSFR.HHZ. 2021-12-30T09:49:38.41 1.0 positive manual P 55 16.6722 122 0.09 24
IV.ATSC.EHZ. 2021-12-30T09:49:37.29 0.1 undecidable manual P 35 10.0788 136 -0.01 100
IV.TB02.DHZ.01 2021-12-30T09:49:37.88 0.1 undecidable manual P 278 16.6722 122 -0.45 90
IV.MURB.HHZ. 2021-12-30T09:49:37.65 0.1 negative manual P 217 11.9769 131 0.07 99
IV.FOSV.EHZ. 2021-12-30T09:49:37.80 0.1 undecidable manual P 117 13.3755 128 0.01 99
IV.ATFO.HHZ. 2021-12-30T09:49:37.38 1.0 undecidable manual S 299 3.8961 160 -0.89 19
IV.ATFO.HHZ. 2021-12-30T09:49:35.99 0.1 positive manual P 299 3.8961 160 -0.64 86
IV.FRON.EHZ. 2021-12-30T09:49:35.86 3.0 undecidable manual Pn -0.02 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHN. ML:0.9 0.0000585 1.18 AML other m 2021-12-30T09:49:43.83
IV.FRON.EHE. ML:0.8 0.00004075 0.96 AML other m 2021-12-30T09:49:44.12
IV.MURB.HHE. ML:1.2 0.0001641073 0.3456 AML other m 2021-12-30T09:49:40.99
IV.MURB.HHN. ML:1.1 0.0001360592 0.864 AML other m 2021-12-30T09:49:40.89
IV.ATPI.EHN. ML:0.8 0.000047600000000000005 0.92 AML other m 2021-12-30T09:49:49.50
IV.ATPI.EHE. ML:0.9 0.0000605 1.24 AML other m 2021-12-30T09:49:49.68
IV.ATVO.HHE. ML:0.5 0.000026090168499999997 0.2624 AML other m 2021-12-30T09:49:42.10
IV.ATVO.HHN. ML:0.7 0.000046655075000000005 0.7808 AML other m 2021-12-30T09:49:42.12
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