Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.2 on date 28-05-2021 and time 23:19:39 (UTC) in region 5 km SE Pietralunga (PG)

A magnitude ML 0.2 earthquake occured in region: 5 km SE Pietralunga (PG), on

  • 28-05-2021 23:19:39 (UTC)
  • 29-05-2021 01:19:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4060, 12.4780 at 10 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
Pietralunga PG 5 2111 2111
Gubbio PG 10 32216 34327
Montone PG 13 1680 36007
Cantiano PU 14 2245 38252
Scheggia e Pascelupo PG 16 1393 39645
Umbertide PG 16 16681 56326
Apecchio PU 18 1882 58208
Costacciaro PG 20 1216 59424

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km N of Perugia (166134 inhabitants)
49 Km E of Arezzo (99543 inhabitants)
53 Km NW of Foligno (57155 inhabitants)
65 Km SW of Fano (60888 inhabitants)
66 Km SW of Pesaro (94582 inhabitants)
73 Km S of Rimini (147750 inhabitants)
84 Km S of Cesena (96758 inhabitants)
87 Km W of Ancona (100861 inhabitants)
93 Km E of Siena (53903 inhabitants)
95 Km N of Terni (111501 inhabitants)
97 Km SE of Forlì (117913 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 0.2 2021-05-28
23:19:39		 43.4062 12.4777 10 2021-05-28
23:29:19		 Sala Sismica INGV-Roma 90582771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-28 23:19:39 ± 0.25
Latitude 43.4062 ± 0.0045
Longitude 12.4777 ± 0.0111
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90582771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 663
Semi-minor axis of confidence ellipse (meter) 606
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 115
Circular confidence region, given by single value of horizontal uncertainty (meter) 660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.04946
Epicentral distance of station farthest from the epicenter (degree) 0.21764
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.2

Field Value
Value 0.2
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 90582771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-28 23:29:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2021-05-28T23:19:48.00 0.3 undecidable manual S 20 24.1536 112 -0.46 67
IV.FRON.EHZ. 2021-05-28T23:19:47.80 0.6 undecidable manual S 58 23.4543 113 -0.45 45
IV.MURB.HHZ. 2021-05-28T23:19:46.21 0.3 undecidable manual S 167 16.3725 121 0.18 72
IV.PIEI.HHZ. 2021-05-28T23:19:45.79 0.6 undecidable manual S 18 15.0738 124 0.12 49
IV.FRON.EHZ. 2021-05-28T23:19:44.65 0.1 undecidable manual P 58 23.4543 113 0.14 95
IV.NARO.HHZ. 2021-05-28T23:19:44.55 0.3 undecidable manual P 20 24.1536 112 -0.08 72
IV.ATPC.HNE. 2021-05-28T23:19:44.20 0.6 undecidable manual S 349 8.3805 140 0.28 48
IV.ATBU.HNE. 2021-05-28T23:19:44.28 0.3 undecidable manual S 36 9.5793 136 0.09 74
IV.ATPI.EHE. 2021-05-28T23:19:43.94 0.6 undecidable manual S 309 7.7811 142 0.14 49
IV.PIEI.HHZ. 2021-05-28T23:19:43.25 0.1 undecidable manual P 18 15.0738 124 0.23 95
IV.MURB.HHZ. 2021-05-28T23:19:43.20 0.1 undecidable manual P 167 16.3725 121 -0.02 99
IV.ATVO.HHZ. 2021-05-28T23:19:43.30 0.3 undecidable manual S 245 6.2937 148 -0.19 73
IV.ATPC.HNE. 2021-05-28T23:19:42.25 0.3 undecidable manual P 349 8.3805 140 0.24 72
IV.ATBU.HNE. 2021-05-28T23:19:42.26 0.1 undecidable manual P 36 9.5793 136 0.09 99
IV.ATPI.EHE. 2021-05-28T23:19:42.15 0.3 undecidable manual P 309 7.7811 142 0.22 72
IV.ATVO.HHZ. 2021-05-28T23:19:41.81 0.1 undecidable manual P 245 6.2937 148 0.05 100
IV.TB03.DH1.01 2021-05-28T23:19:40.80 0.3 undecidable manual P 264 5.4945 151 -0.87 59
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHE. ML:0.2 0.000027201425000000002 0.3456 AML other m 2021-05-28T23:19:43.57
IV.ATVO.HHN. ML:0.1 0.0000217383055 0.1536 AML other m 2021-05-28T23:19:43.49
IV.MURB.HHE. ML:0.4 0.00002404176 1.7408 AML other m 2021-05-28T23:19:46.57
IV.MURB.HHN. ML:0.4 0.000027305505000000002 2.816 AML other m 2021-05-28T23:19:48.37
IV.PIEI.HHE. ML:0.2 0.0000129071625 0.8192 AML other m 2021-05-28T23:19:46.34
IV.PIEI.HHN. ML:0.0 0.0000085662535 0.32 AML other m 2021-05-28T23:19:46.68
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