Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 12-09-2021 and time 03:37:41 (UTC) in region 3 km S Gubbio (PG)

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

  • 12-09-2021 03:37:41 (UTC)
  • 12-09-2021 05:37:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3280, 12.5820 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 11 1393 33609
Costacciaro PG 11 1216 34825
Sigillo PG 13 2404 37229
Fossato di Vico PG 15 2840 40069
Cantiano PU 17 2245 42314
Pietralunga PG 17 2111 44425
Valfabbrica PG 19 3389 47814
Gualdo Tadino PG 20 15208 63022

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Perugia (166134 inhabitants)
42 Km N of Foligno (57155 inhabitants)
59 Km E of Arezzo (99543 inhabitants)
68 Km SW of Fano (60888 inhabitants)
70 Km SW of Pesaro (94582 inhabitants)
82 Km S of Rimini (147750 inhabitants)
82 Km W of Ancona (100861 inhabitants)
85 Km N of Terni (111501 inhabitants)
94 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 0.8 2021-09-12
03:37:41		 43.3275 12.5818 10 2021-09-12
03:43:56		 Sala Sismica INGV-Roma 95328511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-12 03:37:41 ± 0.09
Latitude 43.3275 ± 0.0045
Longitude 12.5818 ± 0.0099
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95328511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 807
Semi-minor axis of confidence ellipse (meter) 326
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 255
Circular confidence region, given by single value of horizontal uncertainty (meter) 810.0
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 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.03957
Epicentral distance of station farthest from the epicenter (degree) 0.29048
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:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 95328511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-12 03:43:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2021-09-12T03:37:53.04 0.6 undecidable manual S 169 32.2455 50 -0.2 47
IV.NARO.HHZ. 2021-09-12T03:37:48.46 0.6 undecidable manual P 360 31.4463 50 0.13 48
IV.ATVO.HHZ. 2021-09-12T03:37:48.25 0.6 undecidable manual S 293 15.3735 123 0 50
IV.ASSB.HHZ. 2021-09-12T03:37:48.23 0.6 negative manual P 169 32.2455 50 -0.22 47
IV.ATCC.EHZ. 2021-09-12T03:37:48.85 0.6 undecidable manual S 163 16.4724 121 0.27 47
IV.FRON.EHZ. 2021-09-12T03:37:47.08 1.0 positive manual P 29 24.0537 112 -0.05 24
IV.MURB.HHZ. 2021-09-12T03:37:46.22 0.6 undecidable manual S 213 8.4804 139 -0.22 49
IV.ATPI.EHZ. 2021-09-12T03:37:46.73 1.0 positive manual P 313 19.869 116 0.37 23
IV.ATVO.HHZ. 2021-09-12T03:37:45.77 1.0 undecidable manual P 293 15.3735 123 0.19 24
IV.ATFO.HHZ. 2021-09-12T03:37:45.29 0.6 undecidable manual S 349 4.3956 156 -0.37 47
IV.ATCC.EHZ. 2021-09-12T03:37:45.93 0.6 positive manual P 163 16.4724 121 0.17 48
IV.ATFO.HHZ. 2021-09-12T03:37:44.15 1.0 undecidable manual P 349 4.3956 156 0.07 25
IV.MURB.HHZ. 2021-09-12T03:37:44.60 0.1 positive manual P 213 8.4804 139 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATFO.HHE. ML:1.0 0.0001825 0.82 AML other m 2021-09-12T03:37:45.28
IV.ATFO.HHN. ML:0.9 0.0001515 0.98 AML other m 2021-09-12T03:37:46.60
IV.MURB.HHE. ML:1.5 0.00044 0.26 AML other m 2021-09-12T03:37:46.66
IV.MURB.HHN. ML:1.5 0.000413 0.5 AML other m 2021-09-12T03:37:46.80
IV.ATCC.EHN. ML:0.8 0.00005275000000000001 0.24 AML other m 2021-09-12T03:37:48.99
IV.ATCC.EHE. ML:0.9 0.00006654999999999999 1.36 AML other m 2021-09-12T03:37:48.24
IV.NARO.HHN. ML:0.3 0.00000859 1.58 AML other m 2021-09-12T03:37:49.94
IV.FRON.EHN. ML:0.7 0.00002855 1.04 AML other m 2021-09-12T03:37:52.57
IV.FRON.EHE. ML:0.4 0.0000157 0.78 AML other m 2021-09-12T03:37:52.14
IV.ASSB.HHE. ML:0.8 0.0000259 0.9 AML other m 2021-09-12T03:37:53.22
IV.NARO.HHE. ML:0.3 0.00000964 1.32 AML other m 2021-09-12T03:37:53.97
IV.ASSB.HHN. ML:0.8 0.0000268 0.16 AML other m 2021-09-12T03:37:53.55
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