Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 28-11-2020 and time 03:48:13 (Italy) in region 5 km S Pietralunga (PG)

A magnitude ML 1.1 earthquake occured in region: 5 km S Pietralunga (PG), on

  • 28-11-2020 02:48:13 (UTC)
  • 28-11-2020 03:48:13 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4, 12.44 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.

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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
Montone PG 9 1680 3791
Gubbio PG 12 32216 36007
Umbertide PG 13 16681 52688
Città di Castello PG 17 39913 92601
Cantiano PU 18 2245 94846
Apecchio PU 18 1882 96728
Scheggia e Pascelupo PG 19 1393 98121

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km N of Perugia (166134 inhabitants)
45 Km E of Arezzo (99543 inhabitants)
53 Km NW of Foligno (57155 inhabitants)
69 Km SW of Fano (60888 inhabitants)
69 Km SW of Pesaro (94582 inhabitants)
75 Km S of Rimini (147750 inhabitants)
84 Km S of Cesena (96758 inhabitants)
90 Km E of Siena (53903 inhabitants)
91 Km W of Ancona (100861 inhabitants)
94 Km N of Terni (111501 inhabitants)
97 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 1.1 2020-11-28
02:48:13		 43.39 12.44 7 2020-11-28
02:57:45		 Sala Sismica INGV-Roma 85059851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-28 02:48:13 ± 0.08
Latitude 43.39 ± 0.00
Longitude 12.44 ± 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 85059851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 276
Semi-minor axis of confidence ellipse (meter) 207
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 69
Circular confidence region, given by single value of horizontal uncertainty (meter) 280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 45
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 38
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.01349
Epicentral distance of station farthest from the epicenter (degree) 0.38761
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 85059851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-28 02:57:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2020-11-28T02:48:28.30 0.3 undecidable manual S 155 0.3876 50 -0.42 64
IV.PE3.EHZ. 2020-11-28T02:48:26.14 0.3 undecidable manual S 8 0.304 102 0.2 69
IV.FOSV.EHZ. 2020-11-28T02:48:24.39 0.3 undecidable manual S 113 0.2563 104 0.24 69
IV.ATCC.EHZ. 2020-11-28T02:48:24.56 0.3 undecidable manual S 145 0.2563 104 0.4 66
IV.NARO.HHZ. 2020-11-28T02:48:23.25 0.3 undecidable manual S 26 0.2401 105 -0.28 68
IV.FRON.EHZ. 2020-11-28T02:48:23.47 0.3 undecidable manual S 60 0.2437 105 -0.19 69
IV.SSFR.HHZ. 2020-11-28T02:48:23.96 0.3 undecidable manual S 81 0.2545 105 -0.12 70
IV.BADI.EHZ. 2020-11-28T02:48:21.60 0.3 undecidable manual S 310 0.1808 110 0.25 70
IV.ASSB.HHZ. 2020-11-28T02:48:21.86 0.1 undecidable manual P 155 0.3876 50 -0.62 81
IV.PE3.EHZ. 2020-11-28T02:48:20.97 0.1 undecidable manual P 8 0.304 102 0.1 93
IV.MURB.HHZ. 2020-11-28T02:48:20.69 0.3 undecidable manual S 154 0.1466 114 0.55 65
IV.APEC.HHZ. 2020-11-28T02:48:20.98 0.3 undecidable manual S 356 0.1637 112 0.22 70
IV.FRON.EHZ. 2020-11-28T02:48:19.38 0.1 undecidable manual P 60 0.2437 105 -0.18 93
IV.SSFR.HHZ. 2020-11-28T02:48:19.66 0.1 undecidable manual P 81 0.2545 105 -0.14 93
IV.ATMI.HHZ. 2020-11-28T02:48:19.78 0.3 undecidable manual S 244 0.1367 116 -0.01 74
IV.FOSV.EHZ. 2020-11-28T02:48:19.65 0.1 undecidable manual P 113 0.2563 104 -0.19 92
IV.NARO.HHZ. 2020-11-28T02:48:19.21 0.1 undecidable manual P 26 0.2401 105 -0.27 91
IV.ATCC.EHZ. 2020-11-28T02:48:19.92 0.1 undecidable manual P 145 0.2563 104 0.08 95
IV.ATFO.HHZ. 2020-11-28T02:48:18.85 0.3 undecidable manual S 106 0.1025 123 0.21 71
IV.ATPC.HNE. 2020-11-28T02:48:18.52 0.3 undecidable manual S 10 0.0872 127 0.35 69
IV.APEC.HHZ. 2020-11-28T02:48:18.00 0.1 undecidable manual P 356 0.1637 112 0.12 96
IV.BADI.EHZ. 2020-11-28T02:48:18.40 0.1 undecidable manual P 310 0.1808 110 0.18 94
IV.ATLO.EHN. 2020-11-28T02:48:18.12 0.3 undecidable manual S 195 0.0827 129 0.1 73
IV.MURB.HHZ. 2020-11-28T02:48:17.79 0.1 undecidable manual P 154 0.1466 114 0.26 93
IV.ATMI.HHZ. 2020-11-28T02:48:17.50 0.1 undecidable manual P 244 0.1367 116 0.18 95
IV.ATPI.EHZ. 2020-11-28T02:48:17.27 0.3 undecidable manual S 336 0.0612 137 -0.15 73
IV.ATLO.EHN. 2020-11-28T02:48:16.52 0.1 undecidable manual P 195 0.0827 129 0.22 95
IV.TB01.DHE.01 2020-11-28T02:48:16.09 0.3 undecidable manual S 182 0.0135 169 -0.46 69
IV.ATPI.EHZ. 2020-11-28T02:48:16.03 0.1 undecidable manual P 336 0.0612 137 0.08 98
IV.TB03.DH1.01 2020-11-28T02:48:16.12 0.3 undecidable manual S 289 0.0198 163 -0.49 68
IV.ATFO.HHZ. 2020-11-28T02:48:16.85 0.1 undecidable manual P 106 0.1025 123 0.19 95
IV.ATPC.HNE. 2020-11-28T02:48:16.64 0.1 undecidable manual P 10 0.0872 127 0.26 94
IV.ATVO.HHZ. 2020-11-28T02:48:16.22 0.3 undecidable manual S 239 0.0252 159 -0.46 68
IV.TB02.DHE.01 2020-11-28T02:48:16.50 0.3 undecidable manual S 219 0.0315 155 -0.27 71
IV.ATVO.HHZ. 2020-11-28T02:48:15.49 0.1 undecidable manual P 239 0.0252 159 -0.03 100
IV.TB02.DHE.01 2020-11-28T02:48:15.62 0.1 undecidable manual P 219 0.0315 155 0.04 99
IV.TB01.DHE.01 2020-11-28T02:48:15.42 0.1 undecidable manual P 182 0.0135 169 -0.03 100
IV.TB03.DH1.01 2020-11-28T02:48:15.40 0.1 undecidable manual P 289 0.0198 163 -0.09 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHE. ML:1.2 0.0002695 0.2 AML other m 2020-11-28T02:48:17.39
IV.ATPI.EHN. ML:1.2 0.000295 0.34 AML other m 2020-11-28T02:48:17.54
IV.ATFO.HHN. ML:0.9 0.00011335 1.04 AML other m 2020-11-28T02:48:19.10
IV.ATFO.HHE. ML:1.1 0.0001605 0.14 AML other m 2020-11-28T02:48:19.38
IV.APEC.HHN. ML:1 8.82E-5 0.26 AML other m 2020-11-28T02:48:21.18
IV.APEC.HHE. ML:0.8 5.49E-5 0.72 AML other m 2020-11-28T02:48:21.33
IV.MURB.HHN. ML:1.3 0.000178 0.62 AML other m 2020-11-28T02:48:21.43
IV.MURB.HHE. ML:1.4 0.000237 0.2 AML other m 2020-11-28T02:48:21.68
IV.ATMI.HHE. ML:0.7 5.11E-5 0.74 AML other m 2020-11-28T02:48:21.50
IV.BADI.EHN. ML:1.2 0.0001107 1.64 AML other m 2020-11-28T02:48:22.12
IV.BADI.EHE. ML:1 7.23E-5 1.56 AML other m 2020-11-28T02:48:22.92
IV.ATMI.HHN. ML:0.8 7.05E-5 1.08 AML other m 2020-11-28T02:48:22.42
IV.FRON.EHN. ML:1 5.41E-5 0.58 AML other m 2020-11-28T02:48:23.48
IV.FRON.EHE. ML:0.7 2.83E-5 0.32 AML other m 2020-11-28T02:48:23.79
IV.SSFR.HHE. ML:1.3 0.00010935 0.18 AML other m 2020-11-28T02:48:24.85
IV.SSFR.HHN. ML:1.3 0.00010235 1.86 AML other m 2020-11-28T02:48:25.93
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