Earthquake with magnitude of ML 0.3 on date 21-08-2020 and time 04:15:46 (UTC) in region 6 km SE Pietralunga (PG)

A magnitude ML 0.3 earthquake occured in region: 6 km SE Pietralunga (PG), on

  • 21-08-2020 04:15:46 (UTC)
  • 21-08-2020 06:15:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4, 12.48 at 7 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
Pietralunga PG 6 2111 2111
Gubbio PG 10 32216 34327
Montone PG 13 1680 36007
Cantiano PU 14 2245 38252
Scheggia e Pascelupo PG 15 1393 39645
Umbertide PG 16 16681 56326
Apecchio PU 18 1882 58208
Costacciaro PG 19 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)
66 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)
98 Km SE of Forlì (117913 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.3 2020-08-21
04:15:46
43.4 12.48 7 2020-08-21
04:31:34
Sala Sismica INGV-Roma 82190531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-21 04:15:46 ± 0.1
Latitude 43.40 ± 0.00
Longitude 12.48 ± 0.00
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82190531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 288
Semi-minor axis of confidence ellipse (meter) 106
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 134
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 21
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
Epicentral distance of station farthest from the epicenter (degree) 0.20145
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 82190531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-21 04:31:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RAFF.HHZ. 2020-08-21T04:17:14.59 3.0 positive manual Pn 3.06 0
IV.MEU.EHZ. 2020-08-21T04:17:12.62 3.0 positive manual Pn -1.77 0
IV.CRTO.HHZ. 2020-08-21T04:17:03.44 3.0 undecidable manual Sn 0.32 0
IV.QLNO.HHZ. 2020-08-21T04:16:56.92 3.0 undecidable manual Sn 1.2 0
XK.GIZZ.HHZ. 2020-08-21T04:16:54.21 3.0 positive manual Pn -3.13 0
IV.EUCT.HNZ. 2020-08-21T04:16:52.54 3.0 undecidable manual Sn -0.37 0
GU.ENR.HHZ. 2020-08-21T04:16:38.77 3.0 undecidable manual Pn 8.37 0
IV.MCRV.HHZ. 2020-08-21T04:16:34.09 3.0 undecidable manual Pn 3.19 0
OX.CIMO.HHZ. 2020-08-21T04:16:20.15 3.0 undecidable manual Pn -1.12 0
IV.SRES.HHZ. 2020-08-21T04:16:17.44 3.0 undecidable manual Sn -0.67 0
IV.LAV9.HHZ. 2020-08-21T04:16:07.56 3.0 undecidable manual Pn -0.8 0
IV.CSNT.HHZ. 2020-08-21T04:16:07.31 3.0 undecidable manual Sn 3.84 0
IT.FIE.HGZ. 2020-08-21T04:16:04.08 3.0 undecidable manual Sn -0.71 0
IV.BADI.EHZ. 2020-08-21T04:15:54.70 0.6 undecidable manual S 302 0.2014 107 0.04 48
IV.FIR.HHZ. 2020-08-21T04:15:54.33 3.0 undecidable manual P 0.95 0
IV.PIEI.HHZ. 2020-08-21T04:15:52.18 0.6 undecidable manual S 17 0.1367 114 -0.17 47
IV.ATSC.EHE. 2020-08-21T04:15:52.79 0.6 undecidable manual S 82 0.1511 112 -0.05 49
IV.BADI.EHZ. 2020-08-21T04:15:51.78 1.0 positive manual P 302 0.2014 107 0.54 22
IV.ATLO.HNE. 2020-08-21T04:15:51.40 0.3 undecidable manual S 211 0.1034 120 0.19 71
IV.ATBU.HNZ. 2020-08-21T04:15:50.94 0.3 undecidable manual S 35 0.0863 125 0.29 70
IV.ATSC.EHE. 2020-08-21T04:15:50.04 0.3 undecidable manual P 82 0.1511 112 -0.15 71
IV.MURB.HHZ. 2020-08-21T04:15:50.37 3.0 negative manual P 0.27 0
IV.ATPI.EHZ. 2020-08-21T04:15:50.12 0.6 undecidable manual S 309 0.0728 130 -0.12 48
IV.ATPC.HHZ. 2020-08-21T04:15:50.55 0.6 undecidable manual S 347 0.0782 128 0.16 48
IV.ATLO.HNE. 2020-08-21T04:15:49.34 0.1 undecidable manual P 211 0.1034 120 0.09 97
IV.TB02.DHZ.01 2020-08-21T04:15:49.75 0.6 undecidable manual S 237 0.0621 135 -0.16 48
IV.ATVO.HNE. 2020-08-21T04:15:49.76 0.3 undecidable manual S 248 0.0576 136 -0.05 74
IV.PIEI.HHZ. 2020-08-21T04:15:49.82 0.3 positive manual P 17 0.1367 114 -0.09 72
IV.TB01.DHN.01 2020-08-21T04:15:49.35 0.3 undecidable manual S 235 0.0396 147 -0.02 75
IV.TB01.DHN.01 2020-08-21T04:15:48.19 0.1 undecidable manual P 235 0.0396 147 0 100
IV.ATPI.EHZ. 2020-08-21T04:15:48.61 0.6 undecidable manual P 309 0.0728 130 -0.08 49
IV.ATPC.HHZ. 2020-08-21T04:15:48.74 0.1 undecidable manual P 347 0.0782 128 -0.04 99
IV.TB03.DHZ.01 2020-08-21T04:15:48.30 0.1 undecidable manual P 267 0.0513 140 -0.04 99
IV.TB02.DHZ.01 2020-08-21T04:15:48.40 0.3 undecidable manual P 237 0.0621 135 -0.1 73
IV.ATBU.HNZ. 2020-08-21T04:15:48.96 0.1 undecidable manual P 35 0.0863 125 0.03 99
IV.ATVO.HNE. 2020-08-21T04:15:48.43 0.3 undecidable manual P 248 0.0576 136 -0.01 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHN. ML:-0.1 1.6111042E-5 0.1408 AML other m 2020-08-21T04:15:50.21
IV.ATPI.HNN. ML:0.7 9.5218055E-5 0.4992 AML other m 2020-08-21T04:15:50.72
IV.ATPI.EHE. ML:0 1.9712153E-5 0.1408 AML other m 2020-08-21T04:15:50.48
IV.ATPI.HNE. ML:0.7 8.7792795E-5 0.8 AML other m 2020-08-21T04:15:54.70
IV.PIEI.HHE. ML:0.3 1.997743E-5 0.16 AML other m 2020-08-21T04:15:52.93
IV.PIEI.HHN. ML:0 8.9754397E-6 0.16 AML other m 2020-08-21T04:15:52.47
IV.MURB.HHE. ML:0.3 2.047207E-5 0.2016 AML other m 2020-08-21T04:15:54.10
IV.MURB.HHN. ML:0.2 1.6950535E-5 0.3392 AML other m 2020-08-21T04:15:56.33
IV.MURB.HNE. ML:0.9 7.7125795E-5 0.5504 AML other m 2020-08-21T04:16:18.53
IV.MURB.HNN. ML:1 9.937216E-5 0.9408 AML other m 2020-08-21T04:16:00.70
IV.BADI.EHN. ML:0.2 1.0302004E-5 0.16 AML other m 2020-08-21T04:15:54.84
IV.BADI.EHE. ML:0.5 1.99398115E-5 0.1824 AML other m 2020-08-21T04:15:54.91
IV.FIR.HNE. ML:2.3 0.00018173635 0.08 AML other m 2020-08-21T04:16:28.71
IV.FIR.HHE. ML:2.4 0.0002081151 0.08 AML other m 2020-08-21T04:16:28.70
IV.FIR.HNN. ML:2.2 0.00015931945 0.1408 AML other m 2020-08-21T04:16:27.12
IV.FIR.HHN. ML:2.2 0.000159424455 0.08 AML other m 2020-08-21T04:16:29.08
IV.LAV9.HNN. ML:2.8 0.0002186846 0.2496 AML other m 2020-08-21T04:16:57.26
IV.LAV9.HNE. ML:3.1 0.000402933795 0.08 AML other m 2020-08-21T04:16:58.24
IV.LAV9.HHE. ML:3.1 0.0004318937 0.1792 AML other m 2020-08-21T04:16:58.16
IV.LAV9.HHN. ML:2.9 0.00023485228 0.08 AML other m 2020-08-21T04:16:58.19
OX.CIMO.HHN. ML:1.7 6.7498555E-6 1.2192 AML other m 2020-08-21T04:16:56.70
OX.CIMO.HNN. ML:2.5 3.6485825E-5 0.6624 AML other m 2020-08-21T04:16:27.36
OX.CIMO.HHE. ML:2 9.75457E-6 1.3792 AML other m 2020-08-21T04:16:57.71
OX.CIMO.HNE. ML:2.6 3.9718235E-5 0.7808 AML other m 2020-08-21T04:16:47.58
IV.MCRV.HHE. ML:2.3 1.2696515E-5 0.0608 AML other m 2020-08-21T04:16:40.42
IV.MCRV.HHN. ML:2.6 2.9439735E-5 0.0608 AML other m 2020-08-21T04:16:40.45
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download