Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 17-05-2020 and time 21:50:41 (UTC) in region 6 km SE Gualdo Tadino (PG)

A magnitude ML 1.0 earthquake occured in region: 6 km SE Gualdo Tadino (PG), on

  • 17-05-2020 21:50:41 (UTC)
  • 17-05-2020 23:50:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1800, 12.8120 at 18 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
Gualdo Tadino PG 6 15208 15208
Nocera Umbra PG 8 5839 21047
Fiuminata MC 10 1402 22449
Sefro MC 12 422 22871
Fossato di Vico PG 13 2840 25711
Esanatoglia MC 14 2034 27745
Valtopina PG 14 1398 29143
Pioraco MC 14 1134 30277
Serravalle di Chienti MC 17 1070 31347
Valfabbrica PG 17 3389 34736
Sigillo PG 18 2404 37140
Matelica MC 18 9981 47121
Fabriano AN 19 31480 78601
Assisi PG 20 28299 106900

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NE of Foligno (57155 inhabitants)
35 Km E of Perugia (166134 inhabitants)
70 Km N of Terni (111501 inhabitants)
75 Km SW of Ancona (100861 inhabitants)
76 Km S of Fano (60888 inhabitants)
82 Km E of Arezzo (99543 inhabitants)
82 Km S of Pesaro (94582 inhabitants)
93 Km NW of Teramo (54892 inhabitants)
100 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 1.0 2020-05-17
21:50:41		 43.1802 12.8115 18 2020-11-19
12:36:46		 Bollettino Sismico Italiano INGV 79615581
Reviewed
Rev100 		ML 1.2 2020-05-17
21:50:41		 43.1802 12.8115 18 2020-05-17
21:56:24		 Sala Sismica INGV-Roma 79245531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-17 21:50:41 ± 0.09
Latitude 43.1802 ± 0.0027
Longitude 12.8115 ± 0.0037
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79615581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 298
Semi-minor axis of confidence ellipse (meter) 95
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 209
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.30037
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.5
Num. used stations 18
Type of magnitude ML
Reference to an origin 79245531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-17 21:56:24

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 79615581
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-27 09:13:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ROSPO.HHZ. 2020-05-17T21:51:32.39 3.0 undecidable manual Sn 0 0
IV.GIUL.HHZ. 2020-05-17T21:51:13.52 3.0 negative manual Pg 7.05 0
IV.VENL.HNZ. 2020-05-17T21:51:12.98 3.0 negative manual Pn -0.98 0
IV.TERO.HHZ. 2020-05-17T21:50:55.00 3.0 undecidable manual P -0.19 0
IV.MF5.EHZ. 2020-05-17T21:50:54.17 3.0 positive manual P 2.89 0
IV.RM33.EHZ. 2020-05-17T21:50:53.16 3.0 negative manual P -0.86 0
IV.CSP1.EHZ. 2020-05-17T21:50:53.72 1.0 undecidable manual S 107 33.3444 107 0.58 21
IV.LNSS.HHZ. 2020-05-17T21:50:52.00 3.0 positive manual P -0.14 0
IV.FDMO.HHZ. 2020-05-17T21:50:52.06 0.3 undecidable manual S 125 27.4503 112 0.41 67
IV.SSFR.HHZ. 2020-05-17T21:50:52.12 0.1 undecidable manual S 355 28.5492 111 0.19 94
IV.EL6.EHZ. 2020-05-17T21:50:52.04 0.3 undecidable manual S 55 28.6491 110 0.07 72
IV.SMA1.EHZ. 2020-05-17T21:50:51.99 3.0 undecidable manual P -1.29 0
IV.MMO1.EHZ. 2020-05-17T21:50:51.30 3.0 positive manual P 0.61 0
IV.MURB.HHZ. 2020-05-17T21:50:51.33 0.1 undecidable manual S 292 24.9528 114 0.28 93
IV.MC2.EHZ. 2020-05-17T21:50:50.85 3.0 positive manual P 1.33 0
IV.CESI.HNN. 2020-05-17T21:50:50.08 0.1 undecidable manual S 159 20.868 120 0.01 98
IV.ASSB.HHZ. 2020-05-17T21:50:49.76 0.1 undecidable manual S 219 19.6692 122 -0.04 98
IV.NRCA.HNZ. 2020-05-17T21:50:49.71 3.0 positive manual P -0.06 0
IV.ATCC.EHZ. 2020-05-17T21:50:48.60 0.1 undecidable manual S 272 13.875 134 0.02 100
IV.CSP1.EHZ. 2020-05-17T21:50:48.19 0.1 undecidable manual P 107 33.3444 107 -0.05 96
IV.SNTG.HHZ. 2020-05-17T21:50:48.33 0.1 undecidable manual S 51 13.3755 136 -0.15 97
IV.EL6.EHZ. 2020-05-17T21:50:47.57 0.1 undecidable manual P 55 28.6491 110 0.01 97
IV.FDMO.HHZ. 2020-05-17T21:50:47.35 0.1 undecidable manual P 125 27.4503 112 -0.03 98
IV.SSFR.HHZ. 2020-05-17T21:50:47.39 0.1 undecidable manual P 355 28.5492 111 -0.14 95
IV.CESI.HNN. 2020-05-17T21:50:46.36 0.1 undecidable manual P 159 20.868 120 -0.1 97
IV.MURB.HHZ. 2020-05-17T21:50:46.92 0.1 undecidable manual P 292 24.9528 114 -0.1 96
IV.ASSB.HHZ. 2020-05-17T21:50:46.16 0.1 undecidable manual P 219 19.6692 122 -0.15 96
IV.SNTG.HHZ. 2020-05-17T21:50:45.44 0.1 undecidable manual P 51 13.3755 136 -0.1 98
IV.ATCC.EHZ. 2020-05-17T21:50:45.49 0.1 undecidable manual P 272 13.875 134 -0.11 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHN. ML:0.9 0.0000582 0.38 AML other m 2020-05-17T21:50:48.75
IV.ATCC.EHE. ML:0.7 0.00004115 0.32 AML other m 2020-05-17T21:50:48.72
IV.MURB.HHE. ML:0.9 0.000041099999999999996 0.42 AML other m 2020-05-17T21:50:52.22
IV.MURB.HHN. ML:0.8 0.0000354 0.42 AML other m 2020-05-17T21:50:52.63
IV.SSFR.HHN. ML:0.8 0.0000318 0.24 AML other m 2020-05-17T21:50:52.59
IV.SSFR.HHE. ML:0.9 0.00003635 0.7 AML other m 2020-05-17T21:50:52.47
IV.SMA1.EHE. ML:1.4 0.00003875 1.46 AML other m 2020-05-17T21:50:57.14
IV.SMA1.EHN. ML:1.5 0.00004435 0.4 AML other m 2020-05-17T21:50:59.15
IV.TERO.HHN. ML:1.1 0.0000158 0.08 AML other m 2020-05-17T21:51:00.65
IV.TERO.HHE. ML:1.2 0.0000196 1.48 AML other m 2020-05-17T21:51:01.09
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