Earthquake with magnitude of ML 0.9 on date 08-08-2021 and time 08:42:50 (Italy) in region 3 km W Gualdo Tadino (PG)

A magnitude ML 0.9 earthquake occured in region: 3 km W Gualdo Tadino (PG), on

  • 08-08-2021 06:42:50 (UTC)
  • 08-08-2021 08:42:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2240, 12.7530 at 11 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
Gualdo Tadino PG 3 15208 15208
Fossato di Vico PG 8 2840 18048
Sigillo PG 12 2404 20452
Nocera Umbra PG 13 5839 26291
Valfabbrica PG 14 3389 29680
Fiuminata MC 15 1402 31082
Costacciaro PG 15 1216 32298
Esanatoglia MC 16 2034 34332
Fabriano AN 18 31480 65812
Sefro MC 18 422 66234
Valtopina PG 18 1398 67632
Pioraco MC 20 1134 68766

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km N of Foligno (57155 inhabitants)
32 Km E of Perugia (166134 inhabitants)
72 Km SW of Fano (60888 inhabitants)
74 Km N of Terni (111501 inhabitants)
75 Km E of Arezzo (99543 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
78 Km S of Pesaro (94582 inhabitants)
94 Km S of Rimini (147750 inhabitants)
100 Km NW of Teramo (54892 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 2021-08-08
06:42:50
43.224 12.7528 11 2021-08-08
06:49:11
Sala Sismica INGV-Roma 93825191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-08 06:42:50 ± 0.06
Latitude 43.2240 ± 0.0036
Longitude 12.7528 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93825191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 446
Semi-minor axis of confidence ellipse (meter) 300
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 244
Circular confidence region, given by single value of horizontal uncertainty (meter) 450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.30757
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 93825191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-08 06:49:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2021-08-08T06:43:03.97 3.0 undecidable manual S 0.12 0
IV.FDMO.HHZ. 2021-08-08T06:43:01.81 0.3 undecidable manual S 127 34.1436 50 0.03 71
IV.MML1.EHZ. 2021-08-08T06:42:58.56 0.1 undecidable manual S 125 21.5673 50 0.15 100
IV.ATSC.EHZ. 2021-08-08T06:42:58.79 0.1 undecidable manual S 346 22.8549 50 0.03 98
IV.PIEI.HHZ. 2021-08-08T06:42:58.00 3.0 undecidable manual P 0
IV.ASSB.HHZ. 2021-08-08T06:42:58.29 0.1 undecidable manual S 201 21.5673 50 -0.12 93
IV.ARVD.HHZ. 2021-08-08T06:42:57.05 3.0 undecidable manual P 0
IV.FDMO.HHZ. 2021-08-08T06:42:56.94 0.1 undecidable manual P 127 34.1436 50 0.06 96
IV.FRON.EHZ. 2021-08-08T06:42:56.29 0.1 undecidable manual P 356 32.6451 50 -0.36 89
IV.MML1.EHZ. 2021-08-08T06:42:55.07 0.1 undecidable manual P 125 21.5673 50 0.14 100
IV.ATSC.EHZ. 2021-08-08T06:42:55.31 0.3 undecidable manual P 346 22.8549 50 0.18 74
IV.ATCC.EHZ. 2021-08-08T06:42:55.46 0.1 undecidable manual S 245 10.0788 137 0.12 99
IV.ASSB.HHZ. 2021-08-08T06:42:54.99 0.1 undecidable manual P 201 21.5673 50 0.06 98
IV.FOSV.EHZ. 2021-08-08T06:42:54.65 0.1 undecidable manual S 5 7.881 144 -0.2 100
IV.ATCC.EHZ. 2021-08-08T06:42:53.37 0.3 undecidable manual P 245 10.0788 137 0.21 74
IV.FOSV.EHZ. 2021-08-08T06:42:53.10 0.1 undecidable manual P 5 7.881 144 0.22 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHN. ML:0.9 0.00010109999999999999 0.1 AML other m 2021-08-08T06:42:54.93
IV.FOSV.EHE. ML:0.8 0.0000811 0.66 AML other m 2021-08-08T06:42:55.82
IV.ATCC.EHN. ML:1.1 0.00016 0.34 AML other m 2021-08-08T06:42:55.77
IV.ATCC.EHE. ML:0.9 0.000092 0.66 AML other m 2021-08-08T06:42:55.40
IV.ASSB.HHN. ML:0.9 0.000050900000000000004 0.3 AML other m 2021-08-08T06:42:58.59
IV.ASSB.HHE. ML:0.9 0.000052000000000000004 1.68 AML other m 2021-08-08T06:42:58.12
IV.PIEI.HHN. ML:0.8 0.0000188 0.46 AML other m 2021-08-08T06:43:02.92
IV.PIEI.HHE. ML:0.8 0.0000177 0.52 AML other m 2021-08-08T06:43:05.32
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