Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.2 on date 20-05-2021 and time 19:19:32 (Italy) in region 4 km SE Pietralunga (PG)

A magnitude ML 0.2 earthquake occured in region: 4 km SE Pietralunga (PG), on

  • 20-05-2021 17:19:32 (UTC)
  • 20-05-2021 19:19:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4120, 12.4680 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 4 2111 2111
Gubbio PG 11 32216 34327
Montone PG 13 1680 36007
Cantiano PU 15 2245 38252
Scheggia e Pascelupo PG 16 1393 39645
Umbertide PG 16 16681 56326
Apecchio PU 17 1882 58208
Città di Castello PG 19 39913 98121
Piobbico PU 20 2029 100150

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Perugia (166134 inhabitants)
48 Km E of Arezzo (99543 inhabitants)
54 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)
83 Km S of Cesena (96758 inhabitants)
88 Km W of Ancona (100861 inhabitants)
92 Km E of Siena (53903 inhabitants)
96 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 2021-05-20
17:19:32		 43.4125 12.4683 9 2021-05-20
17:28:01		 Sala Sismica INGV-Roma 90300631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-20 17:19:32 ± 0.2
Latitude 43.4125 ± 0.0045
Longitude 12.4683 ± 0.0074
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90300631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 539
Semi-minor axis of confidence ellipse (meter) 363
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 130
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.21404
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.2

Field Value
Value 0.2
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 90300631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-20 17:28:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRJA.HHZ. 2021-05-20T17:21:04.01 3.0 undecidable manual Pg 10.83 0
IV.EUCT.HNZ. 2021-05-20T17:21:01.44 3.0 undecidable manual Sg 13.72 0
IV.CAGR.HHZ. 2021-05-20T17:20:57.65 3.0 undecidable manual Pn -0.54 0
IV.MCRV.HHZ. 2021-05-20T17:20:52.96 3.0 undecidable manual Sn -7.95 0
IV.GIZZ.HHZ. 2021-05-20T17:20:51.71 3.0 positive manual Pn 3.85 0
MN.TRI.HHZ. 2021-05-20T17:20:45.86 3.0 undecidable manual Sg 11.58 0
MN.TIP.HHZ. 2021-05-20T17:20:45.79 3.0 undecidable manual Pn -2.97 0
IV.CADC.HNZ. 2021-05-20T17:20:35.45 3.0 undecidable manual Sn -3.21 0
IV.LPEL.HHZ. 2021-05-20T17:20:27.75 3.0 undecidable manual Sg 2.39 0
IV.PTQR.HHZ. 2021-05-20T17:20:19.09 3.0 undecidable manual Sg 0.76 0
MN.TRI.HHZ. 2021-05-20T17:20:15.73 3.0 negative manual Pg 9.59 0
IV.CIGN.HHZ. 2021-05-20T17:20:14.75 3.0 undecidable manual Pg 4.69 0
IV.FIR.HHZ. 2021-05-20T17:19:48.26 3.0 undecidable manual Pg 1.95 0
IV.IMOL.HNZ. 2021-05-20T17:19:47.41 3.0 negative manual P 0.38 0
IV.MMO1.EHZ. 2021-05-20T17:19:45.52 3.0 undecidable manual P -1.09 0
IV.NARO.HHZ. 2021-05-20T17:19:41.36 0.3 undecidable manual S 22 23.754 111 -0.31 70
IV.MURB.HHZ. 2021-05-20T17:19:39.60 3.0 undecidable manual P 0
IV.ATSC.EHN. 2021-05-20T17:19:39.66 0.3 undecidable manual S 86 17.5713 118 -0.06 75
IV.ATLO.EHN. 2021-05-20T17:19:38.14 0.3 undecidable manual S 205 11.877 128 0.1 75
IV.ATPC.HNE. 2021-05-20T17:19:37.12 0.3 undecidable manual S 353 7.5813 141 0.14 75
IV.NARO.HHZ. 2021-05-20T17:19:37.72 1.0 undecidable manual P 22 23.754 111 -0.2 24
IV.ATBU.EHE. 2021-05-20T17:19:37.59 0.1 undecidable manual S 43 9.4794 135 0.16 99
IV.ATVO.HHZ. 2021-05-20T17:19:36.36 0.1 undecidable manual S 236 5.994 147 -0.3 97
IV.FRON.EHZ. 2021-05-20T17:19:36.36 3.0 negative manual P -0.18 0
IV.ATSC.EHN. 2021-05-20T17:19:36.70 0.1 undecidable manual P 86 17.5713 118 -0.09 99
IV.FRON.EHZ. 2021-05-20T17:19:36.30 3.0 undecidable manual S 0
IV.ATLO.EHN. 2021-05-20T17:19:35.95 0.1 undecidable manual P 205 11.877 128 0.12 99
IV.ATBU.EHE. 2021-05-20T17:19:35.58 0.1 undecidable manual P 43 9.4794 135 0.11 100
IV.ATPC.HNE. 2021-05-20T17:19:35.36 0.1 undecidable manual P 353 7.5813 141 0.14 100
IV.ATVO.HHZ. 2021-05-20T17:19:35.02 1.0 undecidable manual P 236 5.994 147 -0.01 26
IV.ATPI.EHZ. 2021-05-20T17:19:23.04 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHE. ML:0.2 0.000024215515 0.1024 AML other m 2021-05-20T17:19:36.54
IV.ATVO.HHN. ML:0.2 0.000023926375499999998 0.1792 AML other m 2021-05-20T17:19:36.45
IV.FRON.EHE. ML:-0.1 0.0000057454135 0.064 AML other m 2021-05-20T17:19:37.45
IV.FRON.EHN. ML:0.2 0.000008796480499999998 0.0512 AML other m 2021-05-20T17:19:37.51
IV.NARO.HHE. ML:-0.1 0.0000044815405 0.064 AML other m 2021-05-20T17:19:43.32
IV.NARO.HHN. ML:-0.1 0.000004135909 0.4224 AML other m 2021-05-20T17:19:39.97
IV.MURB.HNE. ML:1.2 0.0001300856 0.6784 AML other m 2021-05-20T17:19:54.46
IV.MURB.HNN. ML:1.1 0.000099931225 0.9472 AML other m 2021-05-20T17:19:57.06
IV.MURB.HHE. ML:0.4 0.000020099576 0.2304 AML other m 2021-05-20T17:19:41.43
IV.MURB.HHN. ML:0.4 0.000022089315 0.9216 AML other m 2021-05-20T17:19:39.35
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