Earthquake with magnitude of ML 0.8 on date 28-09-2020 and time 19:35:05 (Italy) in region 2 km NE Pietralunga (PG)

A magnitude ML 0.8 earthquake occured in region: 2 km NE Pietralunga (PG), on

  • 28-09-2020 17:35:05 (UTC)
  • 28-09-2020 19:35:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.45, 12.46 at 8 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 2 2111 2111
Apecchio PU 12 1882 3993
Cantiano PU 14 2245 6238
Gubbio PG 15 32216 38454
Montone PG 15 1680 40134
Piobbico PU 16 2029 42163
Scheggia e Pascelupo PG 18 1393 43556
CittĂ  di Castello PG 18 39913 83469
Cagli PU 18 8731 92200
Umbertide PG 20 16681 108881

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km N of Perugia (166134 inhabitants)
47 Km E of Arezzo (99543 inhabitants)
59 Km NW of Foligno (57155 inhabitants)
63 Km SW of Pesaro (94582 inhabitants)
63 Km SW of Fano (60888 inhabitants)
68 Km S of Rimini (147750 inhabitants)
78 Km S of Cesena (96758 inhabitants)
87 Km W of Ancona (100861 inhabitants)
92 Km SE of Forlì (117913 inhabitants)
92 Km E of Siena (53903 inhabitants)
100 Km N of Terni (111501 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 0.8 2020-09-28
17:35:05
43.45 12.46 8 2020-09-28
17:42:58
Sala Sismica INGV-Roma 83340051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-28 17:35:05 ± 0.07
Latitude 43.45 ± 0.00
Longitude 12.46 ± 0.00
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83340051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 252
Semi-minor axis of confidence ellipse (meter) 151
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 93
Circular confidence region, given by single value of horizontal uncertainty (meter) 250
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 50
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
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) 0.02698
Epicentral distance of station farthest from the epicenter (degree) 0.43527
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 83340051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-28 17:42:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2020-09-28T17:35:14.73 0.3 undecidable manual P 161 0.4353 50 0.03 69
IV.MURB.HHZ. 2020-09-28T17:35:13.81 0.3 undecidable manual S 167 0.1961 111 0.28 69
IV.BADI.EHZ. 2020-09-28T17:35:12.67 0.3 undecidable manual S 290 0.1673 114 0.17 71
IV.NARO.HHZ. 2020-09-28T17:35:12.82 0.3 undecidable manual S 29 0.179 112 -0.09 72
IV.ATLO.HNZ. 2020-09-28T17:35:11.63 0.1 undecidable manual S 196 0.1439 117 -0.07 97
IV.PARC.HHZ. 2020-09-28T17:35:11.62 0.3 undecidable manual P 320 0.2527 106 0.3 68
IV.MURB.HHZ. 2020-09-28T17:35:10.22 0.3 undecidable manual P 167 0.1961 111 0.1 72
IV.ATVA.EHZ. 2020-09-28T17:35:10.27 0.3 undecidable manual P 216 0.2167 109 -0.29 68
IV.FRON.EHZ. 2020-09-28T17:35:10.02 0.3 undecidable manual P 71 0.2014 110 -0.22 70
IV.SSFR.HHZ. 2020-09-28T17:35:10.54 0.6 undecidable manual P 94 0.2329 108 -0.36 45
IV.APEC.HHZ. 2020-09-28T17:35:10.70 0.3 undecidable manual S 344 0.1088 124 0.17 72
IV.ATFO.HHZ. 2020-09-28T17:35:10.79 0.3 undecidable manual S 138 0.1178 122 -0.03 74
IV.ATSC.EHZ. 2020-09-28T17:35:09.56 0.1 undecidable manual P 100 0.1655 114 0.06 97
IV.ATMC.EHZ. 2020-09-28T17:35:09.61 0.1 undecidable manual P 268 0.1952 111 -0.49 88
IV.TB03.DHZ.01 2020-09-28T17:35:09.23 0.1 undecidable manual S 215 0.0648 139 0 100
IV.ATVO.HHZ. 2020-09-28T17:35:09.62 0.1 undecidable manual S 209 0.0818 132 -0.09 98
IV.TB01.DHZ.01 2020-09-28T17:35:09.49 0.1 undecidable manual S 195 0.0746 135 -0.01 99
IV.BADI.EHZ. 2020-09-28T17:35:09.59 0.3 undecidable manual P 290 0.1673 114 0.06 72
IV.NARO.HHZ. 2020-09-28T17:35:09.62 0.1 undecidable manual P 29 0.179 112 -0.14 95
IV.ATLO.HNZ. 2020-09-28T17:35:09.13 0.1 undecidable manual P 196 0.1439 117 0.07 97
IV.APEC.HHZ. 2020-09-28T17:35:08.51 0.3 undecidable manual P 344 0.1088 124 0.13 72
IV.ATPI.EHZ. 2020-09-28T17:35:08.55 0.1 undecidable manual S 266 0.0432 150 -0.2 96
IV.ATFO.HHZ. 2020-09-28T17:35:08.71 0.3 undecidable manual P 138 0.1178 122 0.15 72
IV.ATPC.HHZ. 2020-09-28T17:35:08.46 0.1 undecidable manual S 353 0.027 160 -0.02 100
IV.ATVO.HHZ. 2020-09-28T17:35:08.00 0.1 undecidable manual P 209 0.0818 132 0.09 98
IV.ATPI.EHZ. 2020-09-28T17:35:07.44 0.1 undecidable manual P 266 0.0432 150 0.08 99
IV.TB03.DHZ.01 2020-09-28T17:35:07.73 0.1 undecidable manual P 215 0.0648 139 0.09 98
IV.TB01.DHZ.01 2020-09-28T17:35:07.90 0.3 undecidable manual P 195 0.0746 135 0.1 73
IV.ATPC.HHZ. 2020-09-28T17:35:07.34 0.1 undecidable manual P 353 0.027 160 0.13 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHE. ML:0 0.0002252809 0.2432 AML other m 2020-09-28T17:35:08.70
IV.ATPI.EHN. ML:0 0.00022871275 0.1408 AML other m 2020-09-28T17:35:08.70
IV.ATPI.HNE. ML:0 0.00024456656 0.2304 AML other m 2020-09-28T17:35:08.70
IV.ATPI.HNN. ML:0 0.000227469105 0.1024 AML other m 2020-09-28T17:35:08.70
IV.ATVO.HHE. ML:0.8 9.1090075E-5 0.1152 AML other m 2020-09-28T17:35:09.00
IV.ATVO.HHN. ML:0.8 8.3247195E-5 0.1792 AML other m 2020-09-28T17:35:10.01
IV.APEC.HHE. ML:0.5 3.7489263E-5 0.1792 AML other m 2020-09-28T17:35:11.09
IV.APEC.HHN. ML:0.6 5.345383E-5 0.1024 AML other m 2020-09-28T17:35:10.96
IV.ATFO.HHE. ML:0.7 5.279163E-5 0.3968 AML other m 2020-09-28T17:35:12.04
IV.ATFO.HHN. ML:0.6 4.8093895E-5 0.2048 AML other m 2020-09-28T17:35:11.13
IV.BADI.EHE. ML:1.2 0.0001248825 0.1408 AML other m 2020-09-28T17:35:13.11
IV.BADI.EHN. ML:0.9 7.12651E-5 0.2176 AML other m 2020-09-28T17:35:13.19
IV.NARO.HHE. ML:0.9 5.9302955E-5 0.0512 AML other m 2020-09-28T17:35:13.11
IV.NARO.HHN. ML:0.7 3.33604775E-5 0.064 AML other m 2020-09-28T17:35:13.37
IV.MURB.HHN. ML:0.9 6.143288E-5 0.192 AML other m 2020-09-28T17:35:14.25
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