Earthquake with magnitude of ML 0.8 on date 27-09-2020 and time 19:49:50 (UTC) in region 4 km SE Pietralunga (PG)

A magnitude ML 0.8 earthquake occured in region: 4 km SE Pietralunga (PG), on

  • 27-09-2020 19:49:50 (UTC)
  • 27-09-2020 21:49:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.42, 12.47 at 6 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 4 2111 2111
Gubbio PG 11 32216 34327
Montone PG 13 1680 36007
Cantiano PU 14 2245 38252
Scheggia e Pascelupo PG 16 1393 39645
Apecchio PU 16 1882 41527
Umbertide PG 17 16681 58208
CittĂ  di Castello PG 19 39913 98121
Piobbico PU 19 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)
55 Km NW of Foligno (57155 inhabitants)
65 Km SW of Fano (60888 inhabitants)
65 Km SW of Pesaro (94582 inhabitants)
72 Km S of Rimini (147750 inhabitants)
82 Km S of Cesena (96758 inhabitants)
87 Km W of Ancona (100861 inhabitants)
93 Km E of Siena (53903 inhabitants)
96 Km SE of Forlì (117913 inhabitants)
96 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
Md 1.1
ML 0.8
2020-09-27
19:49:50
43.42 12.47 6 2020-09-27
21:21:14
Sala Sismica INGV-Roma 83315121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-27 19:49:50 ± 0.1
Latitude 43.42 ± 0.00
Longitude 12.47 ± 0.00
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83315121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 260
Semi-minor axis of confidence ellipse (meter) 128
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) 260
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 42
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
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) 0.04497
Epicentral distance of station farthest from the epicenter (degree) 0.20864
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 83315121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-27 21:21:14

Md:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 7
Type of magnitude Md
Reference to an origin 83315121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-27 21:21:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FRON.EHZ. 2020-09-27T19:49:59.46 0.6 undecidable manual S 61 0.2086 104 0.31 46
IV.ATMC.EHZ. 2020-09-27T19:49:58.89 0.6 undecidable manual S 278 0.205 104 -0.14 48
IV.BADI.EHZ. 2020-09-27T19:49:58.61 0.3 undecidable manual S 299 0.1898 106 0.17 72
IV.NARO.HHZ. 2020-09-27T19:49:58.82 0.3 undecidable manual S 22 0.2077 104 -0.31 69
IV.APEC.HHZ. 2020-09-27T19:49:57.10 0.3 undecidable manual S 345 0.1457 110 0.27 71
IV.MURB.HHZ. 2020-09-27T19:49:57.77 0.3 undecidable manual S 166 0.1592 108 0.46 68
IV.ATSC.EHZ. 2020-09-27T19:49:57.36 0.3 undecidable manual S 88 0.1547 109 0.19 72
IV.NARO.HHZ. 2020-09-27T19:49:55.27 0.3 positive manual P 22 0.2077 104 -0.36 69
IV.ATLO.EHZ. 2020-09-27T19:49:55.69 0.3 undecidable manual S 205 0.1133 115 0.02 75
IV.FRON.EHZ. 2020-09-27T19:49:55.34 0.1 undecidable manual P 61 0.2086 104 -0.31 93
IV.ATMC.EHZ. 2020-09-27T19:49:55.89 0.1 undecidable manual P 278 0.205 104 0.31 92
IV.BADI.EHZ. 2020-09-27T19:49:55.12 1.0 negative manual P 299 0.1898 106 -0.12 24
IV.APEC.HHZ. 2020-09-27T19:49:54.45 0.6 negative manual P 345 0.1457 110 0.14 48
IV.ATPC.HHZ. 2020-09-27T19:49:54.36 0.3 undecidable manual S 350 0.0639 130 0.3 71
IV.MURB.HHZ. 2020-09-27T19:49:54.61 1.0 negative manual P 166 0.1592 108 0.02 25
IV.ATFO.HHZ. 2020-09-27T19:49:54.85 0.6 undecidable manual S 125 0.0881 121 0.04 50
IV.ATSC.EHZ. 2020-09-27T19:49:54.43 0.1 undecidable manual P 88 0.1547 109 -0.07 98
IV.TB03.DHZ.01 2020-09-27T19:49:53.45 0.3 undecidable manual S 250 0.0486 138 -0.17 74
IV.ATFO.HHZ. 2020-09-27T19:49:53.10 0.6 negative manual P 125 0.0881 121 -0.04 50
IV.ATVO.HHZ. 2020-09-27T19:49:53.88 0.6 undecidable manual S 234 0.0603 131 -0.05 50
IV.ATPI.EHZ. 2020-09-27T19:49:53.92 0.6 undecidable manual S 303 0.0612 131 -0.05 50
IV.ATLO.EHZ. 2020-09-27T19:49:53.58 0.1 undecidable manual P 205 0.1133 115 -0.06 99
IV.TB01.DHZ. 2020-09-27T19:49:53.42 0.3 undecidable manual S 217 0.045 139 -0.12 75
IV.TB01.DHZ. 2020-09-27T19:49:52.32 0.1 undecidable manual P 217 0.045 139 -0.09 100
IV.TB03.DHZ.01 2020-09-27T19:49:52.32 0.1 undecidable manual P 250 0.0486 138 -0.13 99
IV.ATVO.HHZ. 2020-09-27T19:49:52.54 0.1 positive manual P 234 0.0603 131 -0.1 99
IV.ATPI.EHZ. 2020-09-27T19:49:52.61 0.3 undecidable manual P 303 0.0612 131 -0.05 75
IV.ATPC.HHZ. 2020-09-27T19:49:52.79 0.1 undecidable manual P 350 0.0639 130 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHE. ML:0 0.000103256795 0.1152 AML other m 2020-09-27T19:49:53.99
IV.ATVO.HHN. ML:0 9.6414115E-5 0.128 AML other m 2020-09-27T19:49:54.00
IV.ATPI.EHE. ML:0 4.5339763E-5 0.0768 AML other m 2020-09-27T19:49:54.02
IV.ATPI.EHN. ML:0 4.236148E-5 0.1024 AML other m 2020-09-27T19:49:53.99
IV.ATFO.HHE. ML:0.7 8.799631E-5 0.96 AML other m 2020-09-27T19:49:55.26
IV.ATFO.HHN. ML:0.7 7.672227E-5 0.4352 AML other m 2020-09-27T19:49:55.40
IV.APEC.HHE. ML:0.6 3.9545055E-5 0.1152 AML other m 2020-09-27T19:49:57.52
IV.APEC.HHN. ML:0.8 5.823539E-5 0.1152 AML other m 2020-09-27T19:49:57.40
IV.MURB.HHE. ML:1 8.292695E-5 0.4224 AML other m 2020-09-27T19:49:59.23
IV.MURB.HHN. ML:0.9 8.071839E-5 0.3712 AML other m 2020-09-27T19:49:58.23
IV.ATVO.HHZ. Md:1.1 9 END duration s
IV.ATPI.EHZ. Md:1.2 10 END duration s
IV.ATFO.HHZ. Md:1.3 11 END duration s
IV.ATPC.HHZ. Md:1.1 9 END duration s
IV.TB01.DHZ. Md:0.9 7 END duration s
IV.TB03.DHZ.01 Md:1.1 9 END duration s
IV.ATLO.EHZ. Md:1 8 END duration s
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