Earthquake with magnitude of ML 1.0 on date 20-05-2021 and time 04:10:17 (Italy) in region 13 km NW Valfabbrica (PG)

A magnitude ML 1.0 earthquake occured in region: 13 km NW Valfabbrica (PG), on

  • 20-05-2021 02:10:17 (UTC)
  • 20-05-2021 04:10:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2490, 12.5060 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
Valfabbrica PG 13 3389 3389
Gubbio PG 13 32216 35605
Umbertide PG 16 16681 52286
Perugia PG 18 166134 218420
Montone PG 19 1680 220100

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NE of Perugia (166134 inhabitants)
36 Km NW of Foligno (57155 inhabitants)
56 Km E of Arezzo (99543 inhabitants)
77 Km N of Terni (111501 inhabitants)
78 Km SW of Fano (60888 inhabitants)
81 Km SW of Pesaro (94582 inhabitants)
91 Km S of Rimini (147750 inhabitants)
92 Km W of Ancona (100861 inhabitants)
95 Km E of Siena (53903 inhabitants)
98 Km NE of Viterbo (67173 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 1.0 2021-05-20
02:10:17
43.2492 12.5063 9 2021-05-20
02:20:14
Sala Sismica INGV-Roma 90280131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-20 02:10:17 ± 0.03
Latitude 43.2492 ± 0.0018
Longitude 12.5063 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90280131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 184
Semi-minor axis of confidence ellipse (meter) 154
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 27
Circular confidence region, given by single value of horizontal uncertainty (meter) 180.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
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) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.01889
Epicentral distance of station farthest from the epicenter (degree) 0.47394
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 90280131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-20 02:20:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESI.HHZ. 2021-05-20T02:10:32.11 0.6 undecidable manual S 130 42.1245 50 0.25 45
IV.NARO.HHZ. 2021-05-20T02:10:31.56 0.6 undecidable manual S 8 40.5261 50 0.11 47
IV.FRON.EHZ. 2021-05-20T02:10:29.58 0.6 undecidable manual S 31 34.6431 50 -0.29 45
IV.PIEI.HHZ. 2021-05-20T02:10:28.78 0.6 undecidable manual S 4 31.8459 50 -0.35 45
IV.ATPC.HNZ. 2021-05-20T02:10:27.29 0.6 undecidable manual S 351 25.9518 110 -0.07 48
IV.ASSB.HHZ. 2021-05-20T02:10:27.13 0.6 undecidable manual S 152 26.0517 110 -0.24 46
IV.FDMO.HHZ. 2021-05-20T02:10:27.55 1.0 positive manual P 116 52.6029 50 0.02 23
IV.ATBU.EHZ. 2021-05-20T02:10:27.41 0.6 undecidable manual S 8 25.3524 110 0.25 46
IV.MGAB.HHZ. 2021-05-20T02:10:27.31 0.6 positive manual P 221 49.1175 50 0.32 44
IV.ATPI.EHZ. 2021-05-20T02:10:26.39 0.6 undecidable manual S 339 23.8539 111 -0.29 46
IV.ARVD.HHZ. 2021-05-20T02:10:26.33 0.6 undecidable manual P 52 44.622 50 0.03 47
IV.ATSC.EHZ. 2021-05-20T02:10:26.80 0.6 undecidable manual S 37 24.2535 111 0.01 49
IV.ATMI.HHZ. 2021-05-20T02:10:26.10 0.6 undecidable manual S 296 21.4674 114 0.21 47
IV.CESI.HHZ. 2021-05-20T02:10:25.89 0.3 positive manual P 130 42.1245 50 -0.02 71
IV.NARO.HHZ. 2021-05-20T02:10:25.63 1.0 positive manual P 8 40.5261 50 -0.04 24
IV.FOSV.EHZ. 2021-05-20T02:10:25.81 0.6 undecidable manual S 76 21.1677 114 0 49
IV.TB03.DHZ. 2021-05-20T02:10:24.92 0.6 undecidable manual S 335 18.5703 117 -0.07 49
IV.PIEI.HHZ. 2021-05-20T02:10:24.39 0.6 positive manual P 4 31.8459 50 0.06 48
IV.ATVA.EHZ. 2021-05-20T02:10:24.73 0.3 undecidable manual S 280 18.1707 117 -0.13 72
IV.ATVO.HHZ. 2021-05-20T02:10:24.43 0.6 undecidable manual S 331 16.7721 119 -0.02 49
IV.FRON.EHZ. 2021-05-20T02:10:24.60 1.0 undecidable manual P 31 34.6431 50 -0.16 23
IV.TB01.DHZ. 2021-05-20T02:10:24.26 0.6 undecidable manual S 339 15.7731 121 0.12 48
IV.ATBU.EHZ. 2021-05-20T02:10:23.18 0.1 undecidable manual P 8 25.3524 110 -0.01 98
IV.ATPC.HNZ. 2021-05-20T02:10:23.24 0.1 undecidable manual P 351 25.9518 110 -0.07 96
IV.ATFO.HHZ. 2021-05-20T02:10:23.74 0.6 undecidable manual S 22 14.0748 124 0.11 49
IV.ASSB.HHZ. 2021-05-20T02:10:23.17 0.1 negative manual P 152 26.0517 110 -0.15 95
IV.ATLO.HNZ. 2021-05-20T02:10:22.62 0.6 undecidable manual S 312 10.878 131 -0.13 49
IV.FOSV.EHZ. 2021-05-20T02:10:22.55 0.6 positive manual P 76 21.1677 114 0.13 48
IV.ATMI.HHZ. 2021-05-20T02:10:22.65 0.1 undecidable manual P 296 21.4674 114 0.19 95
IV.ATPI.EHZ. 2021-05-20T02:10:22.91 0.3 negative manual P 339 23.8539 111 -0.01 73
IV.ATSC.EHZ. 2021-05-20T02:10:22.95 0.1 undecidable manual P 37 24.2535 111 -0.03 97
IV.ATFO.HHZ. 2021-05-20T02:10:21.51 0.3 negative manual P 22 14.0748 124 0.35 70
IV.TB01.DHZ. 2021-05-20T02:10:21.49 0.1 undecidable manual P 339 15.7731 121 0.04 99
IV.TB03.DHZ. 2021-05-20T02:10:21.91 0.1 undecidable manual P 335 18.5703 117 -0.03 98
IV.ATVA.EHZ. 2021-05-20T02:10:21.81 0.1 undecidable manual P 280 18.1707 117 -0.06 98
IV.ATVO.HHZ. 2021-05-20T02:10:21.63 0.1 undecidable manual P 331 16.7721 119 0 99
IV.MURB.HHZ. 2021-05-20T02:10:20.99 0.6 undecidable manual S 44 2.0979 167 -0.11 50
IV.ATLO.HNZ. 2021-05-20T02:10:20.66 0.1 undecidable manual P 312 10.878 131 0.01 100
IV.MURB.HHZ. 2021-05-20T02:10:19.75 1.0 undecidable manual P 44 2.0979 167 0.05 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATFO.HHE. ML:1.2 0.000148 0.64 AML other m 2021-05-20T02:10:24.22
IV.ATFO.HHN. ML:0.9 0.0000899 0.62 AML other m 2021-05-20T02:10:24.48
IV.ATMI.HHN. ML:1.1 0.0000786 0.1 AML other m 2021-05-20T02:10:26.64
IV.ATMI.HHE. ML:1.0 0.0000713 0.94 AML other m 2021-05-20T02:10:28.04
IV.ASSB.HHE. ML:0.8 0.00004055 0.3 AML other m 2021-05-20T02:10:28.26
IV.ASSB.HHN. ML:0.9 0.0000447 0.82 AML other m 2021-05-20T02:10:28.13
IV.FRON.EHE. ML:1.2 0.00005965 0.3 AML other m 2021-05-20T02:10:29.85
IV.PIEI.HHE. ML:1.0 0.00003885 1.18 AML other m 2021-05-20T02:10:29.91
IV.PIEI.HHN. ML:0.8 0.0000293 0.16 AML other m 2021-05-20T02:10:30.10
IV.FRON.EHN. ML:1.1 0.00005044999999999999 0.3 AML other m 2021-05-20T02:10:30.31
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