Earthquake with magnitude of ML 0.9 on date 04-12-2021 and time 01:01:59 (Italy) in region 2 km SW Gubbio (PG)

A magnitude ML 0.9 earthquake occured in region: 2 km SW Gubbio (PG), on

  • 04-12-2021 00:01:59 (UTC)
  • 04-12-2021 01:01:59 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.336, 12.569 at 9 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.

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 2 32216 32216
Scheggia e Pascelupo PG 11 1393 33609
Costacciaro PG 12 1216 34825
Sigillo PG 14 2404 37229
Pietralunga PG 16 2111 39340
Cantiano PU 16 2245 41585
Fossato di Vico PG 16 2840 44425
Valfabbrica PG 20 3389 47814
Umbertide PG 20 16681 64495
Montone PG 20 1680 66175

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Perugia (166134 inhabitants)
44 Km N of Foligno (57155 inhabitants)
57 Km E of Arezzo (99543 inhabitants)
67 Km SW of Fano (60888 inhabitants)
70 Km SW of Pesaro (94582 inhabitants)
81 Km S of Rimini (147750 inhabitants)
83 Km W of Ancona (100861 inhabitants)
86 Km N of Terni (111501 inhabitants)
93 Km S of Cesena (96758 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.9 2021-12-04
00:01:59
43.3363 12.5692 9 2021-12-04
00:11:27
Sala Sismica INGV-Roma 98107341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-04 00:01:59 ± 0.1
Latitude 43.3363 ± 0.0027
Longitude 12.5692 ± 0.0037
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98107341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 43
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 131
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.27429
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 19
Type of magnitude ML
Reference to an origin 98107341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-04 00:11:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CRTC.HHZ. 2021-12-04T00:02:15.79 3.0 undecidable manual S -0.48 0
IV.ATCC.EHZ. 2021-12-04T00:02:06.40 0.6 undecidable manual S 161 0.1592 116 0.1 49
IV.TB02.DHZ.01 2021-12-04T00:02:05.09 1.0 undecidable manual S 286 0.1214 123 0.08 25
IV.NARO.HHZ. 2021-12-04T00:02:05.49 1.0 negative manual P 2 0.2743 106 -0.32 23
IV.ATSC.EHZ. 2021-12-04T00:02:05.43 0.6 undecidable manual S 44 0.1223 122 0.39 47
IV.FRON.EHZ. 2021-12-04T00:02:04.31 1.0 undecidable manual P 32 0.214 110 -0.22 24
IV.ATMI.HHZ. 2021-12-04T00:02:04.74 1.0 undecidable manual P 270 0.2185 110 0.11 24
IV.PIEI.HHZ. 2021-12-04T00:02:04.28 1.0 undecidable manual P 353 0.2005 111 0.03 25
IV.TB01.DHZ.01 2021-12-04T00:02:04.70 0.6 undecidable manual S 295 0.107 126 0.14 49
IV.ATLO.HNZ. 2021-12-04T00:02:04.79 0.6 undecidable manual S 260 0.1196 123 -0.17 49
IV.ATVA.EHZ. 2021-12-04T00:02:04.52 1.0 undecidable manual P 254 0.214 110 -0.02 25
IV.ATPC.HNZ. 2021-12-04T00:02:03.63 1.0 undecidable manual P 331 0.1655 115 0.09 25
IV.TB03.DHZ.01 2021-12-04T00:02:03.03 0.6 undecidable manual P 299 0.1322 120 0.15 49
IV.ATCC.EHZ. 2021-12-04T00:02:03.31 0.6 undecidable manual P 161 0.1592 116 -0.1 49
IV.SSFR.HHZ. 2021-12-04T00:02:03.77 0.6 negative manual P 57 0.1844 113 -0.14 48
IV.MURB.HHZ. 2021-12-04T00:02:03.99 0.6 undecidable manual S 204 0.08 134 0.22 49
IV.ATFO.HNZ. 2021-12-04T00:02:02.33 0.6 undecidable manual S 3 0.0306 159 -0.35 48
IV.ATSC.EHZ. 2021-12-04T00:02:02.74 0.6 undecidable manual P 44 0.1223 122 0.05 50
IV.TB01.DHZ.01 2021-12-04T00:02:02.65 1.0 undecidable manual P 295 0.107 126 0.24 24
IV.ATLO.HNZ. 2021-12-04T00:02:02.61 0.6 undecidable manual P 260 0.1196 123 -0.03 50
IV.TB02.DHZ.01 2021-12-04T00:02:02.62 0.6 undecidable manual P 286 0.1214 123 -0.05 50
IV.MURB.HHZ. 2021-12-04T00:02:01.86 0.1 positive manual P 204 0.08 134 -0.09 100
IV.ATFO.HNZ. 2021-12-04T00:02:01.30 0.6 undecidable manual P 3 0.0306 159 -0.02 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HHE. ML:0.9 0.000124187385 0.36 AML other m 2021-12-04T00:02:04.51
IV.MURB.HHN. ML:0.9 0.00011644493 0.28 AML other m 2021-12-04T00:02:04.24
IV.MURB.HNE. ML:0.9 0.000113599145 0.36 AML other m 2021-12-04T00:02:04.98
IV.MURB.HNN. ML:0.9 0.000112471905 0.27 AML other m 2021-12-04T00:02:04.23
IV.ATCC.EHE. ML:0.5 2.988561565E-5 43.68 AML other m 2021-12-04T00:02:02.90
IV.ATCC.EHN. ML:0.4 2.16416075E-5 0.46 AML other m 2021-12-04T00:02:06.54
IV.ATCC.HNE. ML:0.8 5.0464835E-5 1.17 AML other m 2021-12-04T00:02:06.93
IV.ATCC.HNN. ML:0.8 5.772552E-5 0.82 AML other m 2021-12-04T00:02:06.36
IV.SSFR.HHE. ML:0.7 3.48028535E-5 0.18 AML other m 2021-12-04T00:02:08.26
IV.SSFR.HHN. ML:0.6 3.24294E-5 0.8 AML other m 2021-12-04T00:02:13.03
IV.SSFR.HNE. ML:1.1 9.832362E-5 0.45 AML other m 2021-12-04T00:02:12.57
IV.SSFR.HNN. ML:1.4 0.0001648601 0.74 AML other m 2021-12-04T00:02:14.19
IV.PIEI.HHE. ML:0.3 1.471105E-5 0.1 AML other m 2021-12-04T00:02:08.91
IV.PIEI.HNE. ML:1.2 0.00011359005 0.45 AML other m 2021-12-04T00:02:09.70
IV.PIEI.HNN. ML:1.2 0.00010263759 0.56 AML other m 2021-12-04T00:02:16.63
IV.FRON.EHE. ML:0.8 3.763012E-5 0.96 AML other m 2021-12-04T00:02:06.34
IV.FRON.EHN. ML:0.9 5.559617E-5 1.26 AML other m 2021-12-04T00:02:06.52
IV.NARO.HHE. ML:1.1 6.1480135E-5 1.7 AML other m 2021-12-04T00:02:22.08
IV.NARO.HHN. ML:0.9 4.188248E-5 1.34 AML other m 2021-12-04T00:02:09.12
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