Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 18-08-2021 and time 06:34:03 (Italy) in region 6 km SW Fossato di Vico (PG)

A magnitude ML 0.6 earthquake occured in region: 6 km SW Fossato di Vico (PG), on

  • 18-08-2021 04:34:03 (UTC)
  • 18-08-2021 06:34:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2700, 12.7030 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Fossato di Vico PG 6 2840 2840
Sigillo PG 8 2404 5244
Gualdo Tadino PG 8 15208 20452
Costacciaro PG 10 1216 21668
Gubbio PG 14 32216 53884
Valfabbrica PG 15 3389 57273
Scheggia e Pascelupo PG 15 1393 58666
Fabriano AN 18 31480 90146
Nocera Umbra PG 19 5839 95985
Esanatoglia MC 20 2034 98019

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NE of Perugia (166134 inhabitants)
35 Km N of Foligno (57155 inhabitants)
69 Km SW of Fano (60888 inhabitants)
70 Km E of Arezzo (99543 inhabitants)
73 Km S of Pesaro (94582 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
79 Km N of Terni (111501 inhabitants)
89 Km S of Rimini (147750 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
Bulletin
Rev1000 		ML 0.6 2021-08-18
04:34:03		 43.2703 12.7027 10 2021-12-29
11:12:25		 Bollettino Sismico Italiano INGV 94955671
Reviewed
Rev100 		ML 0.7 2021-08-18
04:34:03		 43.2698 12.7297 11 2021-08-18
04:39:43		 Sala Sismica INGV-Roma 94319251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-18 04:34:03 ± 0.03
Latitude 43.2703 ± 0.0018
Longitude 12.7027 ± 0.0025
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 94955671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 269
Semi-minor axis of confidence ellipse (meter) 154
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 220
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.04946
Epicentral distance of station farthest from the epicenter (degree) 0.42088
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 94319251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-18 04:39:43

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 94955671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-02 10:23:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CING.HNZ. 2021-08-18T04:34:17.10 0.6 undecidable manual S 73 41.4252 50 0.1 47
IV.NARO.HHZ. 2021-08-18T04:34:16.47 0.6 undecidable manual S 345 39.0276 50 0.12 47
IV.FDMO.HHZ. 2021-08-18T04:34:16.96 0.3 undecidable manual S 130 40.5261 50 0.21 69
IV.ATPI.EHE. 2021-08-18T04:34:14.49 0.6 undecidable manual S 310 31.4463 50 0.17 47
IV.PIEI.HHZ. 2021-08-18T04:34:14.69 0.3 undecidable manual S 335 32.3454 50 0.11 72
IV.EL6.EHZ. 2021-08-18T04:34:14.76 0.3 undecidable manual S 78 32.8449 50 0.05 73
IV.TB03.DHZ.01 2021-08-18T04:34:13.12 0.6 undecidable manual S 302 27.6501 50 -0.21 47
IV.ATVO.HHN. 2021-08-18T04:34:13.00 0.6 undecidable manual S 298 26.9508 50 -0.12 48
IV.MML1.HNZ. 2021-08-18T04:34:13.29 0.6 undecidable manual S 129 27.8499 50 -0.09 49
IV.ATBU.EHZ. 2021-08-18T04:34:13.03 0.3 undecidable manual S 331 25.9518 50 0.17 72
IV.FRON.EHZ. 2021-08-18T04:34:13.05 0.6 undecidable manual S 4 27.5502 50 -0.23 47
IV.ATLO.EHE. 2021-08-18T04:34:12.32 0.6 undecidable manual S 282 24.3534 112 -0.04 49
IV.TB01.DHZ. 2021-08-18T04:34:12.61 0.6 undecidable manual S 300 24.8529 112 0.1 49
IV.TB02.DHZ.01 2021-08-18T04:34:12.85 0.6 undecidable manual S 295 26.1516 50 -0.06 49
IV.ASSB.HHN. 2021-08-18T04:34:12.68 0.6 undecidable manual S 188 25.5522 111 -0.06 49
IV.CING.HNZ. 2021-08-18T04:34:11.29 0.6 undecidable manual P 73 41.4252 50 0.11 47
IV.COR1.EHZ. 2021-08-18T04:34:11.71 0.3 undecidable manual P 31 46.7199 50 -0.28 68
IV.FDMO.HHZ. 2021-08-18T04:34:11.12 0.1 undecidable manual P 130 40.5261 50 0.08 95
IV.ATSC.EHE. 2021-08-18T04:34:10.18 0.6 undecidable manual S 356 17.0718 120 0.09 49
IV.EL6.EHZ. 2021-08-18T04:34:10.02 0.1 undecidable manual P 78 32.8449 50 0.16 95
IV.NARO.HHZ. 2021-08-18T04:34:10.82 0.3 undecidable manual P 345 39.0276 50 0.01 72
IV.ATPI.EHE. 2021-08-18T04:34:09.75 0.1 undecidable manual P 310 31.4463 50 0.12 96
IV.PIEI.HHZ. 2021-08-18T04:34:09.88 0.3 undecidable manual P 335 32.3454 50 0.1 72
IV.ATFO.HHN. 2021-08-18T04:34:09.54 0.6 undecidable manual S 315 15.0738 124 0.05 50
IV.ATVO.HHN. 2021-08-18T04:34:09.09 0.3 undecidable manual P 298 26.9508 50 0.15 72
IV.ATCC.EHZ. 2021-08-18T04:34:08.60 0.3 undecidable manual S 208 10.6782 133 0.29 72
IV.MML1.HNZ. 2021-08-18T04:34:08.86 0.1 undecidable manual P 129 27.8499 50 -0.23 94
IV.TB01.DHZ. 2021-08-18T04:34:08.39 0.1 undecidable manual P 300 24.8529 112 -0.2 95
IV.TB02.DHZ.01 2021-08-18T04:34:08.91 0.3 undecidable manual P 295 26.1516 50 0.09 73
IV.ATBU.EHZ. 2021-08-18T04:34:08.83 0.1 undecidable manual P 331 25.9518 50 0.04 98
IV.FRON.EHZ. 2021-08-18T04:34:08.76 0.3 undecidable manual P 4 27.5502 50 -0.27 70
IV.ASSB.HHN. 2021-08-18T04:34:08.37 0.3 undecidable manual P 188 25.5522 111 -0.35 69
IV.TB03.DHZ.01 2021-08-18T04:34:08.69 0.3 undecidable manual P 302 27.6501 50 -0.37 69
IV.ATLO.EHE. 2021-08-18T04:34:08.40 0.1 undecidable manual P 282 24.3534 112 -0.1 97
IV.ATSC.EHE. 2021-08-18T04:34:07.16 0.1 undecidable manual P 356 17.0718 120 -0.03 100
IV.ATFO.HHN. 2021-08-18T04:34:07.04 0.1 undecidable manual P 315 15.0738 124 0.2 97
IV.ATCC.EHZ. 2021-08-18T04:34:06.60 1.0 undecidable manual P 208 10.6782 133 0.44 23
IV.FOSV.EHZ. 2021-08-18T04:34:06.96 0.3 undecidable manual S 60 5.4945 151 -0.21 74
IV.FOSV.EHZ. 2021-08-18T04:34:05.65 0.3 undecidable manual P 60 5.4945 151 0.15 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHN. ML:0.5 0.0000479 0.2 AML other m 2021-08-18T04:34:07.10
IV.FOSV.EHE. ML:0.3 0.000029900000000000002 0.4 AML other m 2021-08-18T04:34:07.37
IV.ATCC.EHE. ML:0.9 0.00009045 0.24 AML other m 2021-08-18T04:34:08.84
IV.ATCC.EHN. ML:0.9 0.00009145 1.48 AML other m 2021-08-18T04:34:08.15
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