Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 30-03-2021 and time 22:02:06 (Italy) in region 7 km S Gualdo Tadino (PG)

A magnitude ML 0.5 earthquake occured in region: 7 km S Gualdo Tadino (PG), on

  • 30-03-2021 20:02:06 (UTC)
  • 30-03-2021 22:02:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1740, 12.8080 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.

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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 7 15208 15208
Nocera Umbra PG 7 5839 21047
Fiuminata MC 10 1402 22449
Sefro MC 12 422 22871
Valtopina PG 13 1398 24269
Fossato di Vico PG 14 2840 27109
Esanatoglia MC 14 2034 29143
Pioraco MC 14 1134 30277
Serravalle di Chienti MC 16 1070 31347
Valfabbrica PG 17 3389 34736
Sigillo PG 18 2404 37140
Matelica MC 19 9981 47121
Assisi PG 19 28299 75420
Fabriano AN 20 31480 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)
69 Km N of Terni (111501 inhabitants)
76 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)
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 0.5 2021-03-30
20:02:06		 43.1745 12.8082 11 2021-03-30
20:09:45		 Sala Sismica INGV-Roma 88623931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-30 20:02:06 ± 0.05
Latitude 43.1745 ± 0.0045
Longitude 12.8082 ± 0.0086
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 88623931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 790
Semi-minor axis of confidence ellipse (meter) 291
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 790.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.34804
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.4
Num. used stations 9
Type of magnitude ML
Reference to an origin 88623931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-30 20:09:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OX.ACOM.HHZ. 2021-03-30T20:03:44.77 3.0 undecidable manual Sg 13.93 0
IV.GIZZ.HHZ. 2021-03-30T20:03:26.67 3.0 positive manual Pg 19.34 0
IV.HPAC.HHZ. 2021-03-30T20:03:26.47 3.0 undecidable manual Pn -2.24 0
IV.PAOL.HHZ. 2021-03-30T20:03:10.42 3.0 undecidable manual Sn 0.14 0
IV.PTRJ.HNZ. 2021-03-30T20:03:06.61 3.0 undecidable manual Sn 2.13 0
IV.MAGA.HHZ. 2021-03-30T20:02:40.45 3.0 undecidable manual Pn 3.43 0
IV.PESA.HHZ. 2021-03-30T20:02:36.13 3.0 undecidable manual Sg 1.54 0
IV.NDIM.HHZ. 2021-03-30T20:02:25.98 3.0 undecidable manual Pn 0.27 0
IV.FRON.EHZ. 2021-03-30T20:02:19.35 0.3 undecidable manual S 350 38.628 50 0 72
IV.CSP1.EHZ. 2021-03-30T20:02:18.17 0.3 undecidable manual S 106 33.3444 50 0.22 69
IV.FDMO.HHZ. 2021-03-30T20:02:16.29 0.3 undecidable manual S 124 27.2505 50 -0.03 73
IV.EL6.EHZ. 2021-03-30T20:02:16.85 0.3 undecidable manual S 54 29.2485 50 0 73
IV.FRON.EHZ. 2021-03-30T20:02:13.98 0.1 undecidable manual P 350 38.628 50 0.04 95
IV.RIBO.EHZ.01 2021-03-30T20:02:13.09 3.0 positive manual P 1.05 0
IV.CSP1.EHZ. 2021-03-30T20:02:13.25 1.0 positive manual P 106 33.3444 50 0.12 24
IV.ATCC.EHZ. 2021-03-30T20:02:12.62 0.1 undecidable manual S 275 13.6752 129 0.01 100
IV.FDMO.HHZ. 2021-03-30T20:02:12.04 0.1 undecidable manual P 124 27.2505 50 -0.15 95
IV.EL6.EHZ. 2021-03-30T20:02:12.39 0.1 undecidable manual P 54 29.2485 50 -0.1 96
IV.ATCC.EHZ. 2021-03-30T20:02:10.08 0.1 undecidable manual P 275 13.6752 129 0.04 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHN. ML:0.6 0.00004185 0.12 AML other m 2021-03-30T20:02:12.73
IV.ATCC.EHE. ML:0.6 0.000035388795 0.0768 AML other m 2021-03-30T20:02:12.79
IV.FDMO.HHE. ML:0.3 0.0000083317605 0.1408 AML other m 2021-03-30T20:02:16.47
IV.FDMO.HHN. ML:0.3 0.0000087004065 0.1792 AML other m 2021-03-30T20:02:16.46
IV.EL6.EHE. ML:0.6 0.000019294721 0.128 AML other m 2021-03-30T20:02:17.32
IV.EL6.EHN. ML:0.5 0.0000167750745 0.128 AML other m 2021-03-30T20:02:17.57
IV.FRON.EHN. ML:0.4 0.000009775891 0.064 AML other m 2021-03-30T20:02:20.72
IV.FRON.EHE. ML:0.4 0.000008338955500000001 0.1152 AML other m 2021-03-30T20:02:19.71
IV.NDIM.HHE. ML:3.4 0.0004413191 0.0896 AML other m 2021-03-30T20:02:27.71
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