Earthquake with magnitude of ML 0.9 on date 23-11-2020 and time 19:59:02 (UTC) in region 8 km N Valfabbrica (PG)

A magnitude ML 0.9 earthquake occured in region: 8 km N Valfabbrica (PG), on

  • 23-11-2020 19:59:02 (UTC)
  • 23-11-2020 20:59:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.23, 12.57 at 10 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
Valfabbrica PG 9 3389 3389
Gubbio PG 13 32216 35605
Fossato di Vico PG 17 2840 38445
Gualdo Tadino PG 17 15208 53653
Sigillo PG 17 2404 56057
Costacciaro PG 18 1216 57273
Assisi PG 18 28299 85572
Bastia Umbra PG 19 21874 107446

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NE of Perugia (166134 inhabitants)
33 Km NW of Foligno (57155 inhabitants)
62 Km E of Arezzo (99543 inhabitants)
75 Km N of Terni (111501 inhabitants)
77 Km SW of Fano (60888 inhabitants)
80 Km SW of Pesaro (94582 inhabitants)
88 Km W of Ancona (100861 inhabitants)
92 Km S of Rimini (147750 inhabitants)
98 Km NE of Viterbo (67173 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 0.9 2020-11-23
19:59:02
43.23 12.57 10 2020-11-23
20:25:16
Sala Sismica INGV-Roma 84969381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-23 19:59:02 ± 0.05
Latitude 43.23 ± 0.00
Longitude 12.57 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84969381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 359
Semi-minor axis of confidence ellipse (meter) 232
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 225
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.04676
Epicentral distance of station farthest from the epicenter (degree) 0.42268
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 84969381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-23 20:25:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2020-11-23T19:59:17.91 0.6 undecidable manual S 118 0.4227 50 0.34 44
IV.FRON.EHZ. 2020-11-23T19:59:13.81 0.1 undecidable manual S 21 0.3049 50 -0.25 92
IV.ATPC.HNN. 2020-11-23T19:59:13.01 0.1 undecidable manual S 341 0.2608 50 0.23 93
IV.ATBU.EHN. 2020-11-23T19:59:12.62 0.1 undecidable manual S 356 0.2428 50 0.39 90
IV.SSFR.HNE. 2020-11-23T19:59:12.39 0.1 undecidable manual S 37 0.2527 50 -0.14 95
IV.ATPI.EHZ. 2020-11-23T19:59:12.24 0.1 undecidable manual S 330 0.25 50 -0.21 93
IV.ATSC.EHE. 2020-11-23T19:59:11.04 0.1 undecidable manual S 23 0.2068 114 -0.07 97
IV.FDMO.HHZ. 2020-11-23T19:59:11.08 0.1 undecidable manual P 118 0.4227 50 -0.07 93
IV.ATVO.HHZ. 2020-11-23T19:59:10.32 0.1 undecidable manual S 321 0.1925 116 -0.26 93
IV.ASSB.HHZ. 2020-11-23T19:59:10.48 0.1 undecidable manual S 162 0.2005 115 -0.4 90
IV.FOSV.EHZ. 2020-11-23T19:59:09.01 0.1 undecidable manual S 66 0.1493 122 -0.12 97
IV.SSFR.HNE. 2020-11-23T19:59:08.16 0.3 undecidable manual P 37 0.2527 50 -0.08 72
IV.ATLO.EHE. 2020-11-23T19:59:08.92 0.1 undecidable manual S 304 0.1466 122 -0.12 97
IV.ATPC.HNN. 2020-11-23T19:59:08.49 0.6 undecidable manual P 341 0.2608 50 0.11 48
IV.ATPI.EHZ. 2020-11-23T19:59:08.18 0.3 undecidable manual P 330 0.25 50 -0.02 73
IV.FRON.EHZ. 2020-11-23T19:59:08.94 0.3 undecidable manual P 21 0.3049 50 -0.19 70
IV.ATBU.EHN. 2020-11-23T19:59:08.17 0.3 undecidable manual P 356 0.2428 50 0.1 72
IV.ASSB.HHZ. 2020-11-23T19:59:07.23 0.1 undecidable manual P 162 0.2005 115 -0.06 97
IV.ATVA.EHE. 2020-11-23T19:59:07.67 0.3 undecidable manual P 282 0.2149 113 0.09 72
IV.ATSC.EHE. 2020-11-23T19:59:07.46 0.1 undecidable manual P 23 0.2068 114 0.04 97
IV.ATVO.HHZ. 2020-11-23T19:59:07.05 0.3 undecidable manual P 321 0.1925 116 -0.07 73
IV.ATLO.EHE. 2020-11-23T19:59:06.26 0.3 undecidable manual P 304 0.1466 122 0.03 74
IV.FOSV.EHZ. 2020-11-23T19:59:06.49 0.3 undecidable manual P 66 0.1493 122 0.21 71
IV.MURB.HHZ. 2020-11-23T19:59:06.41 0.1 undecidable manual S 309 0.0468 153 0.06 100
IV.ATCC.EHZ. 2020-11-23T19:59:06.91 0.1 undecidable manual S 135 0.0683 143 0.12 98
IV.ATCC.EHZ. 2020-11-23T19:59:05.20 0.1 undecidable manual P 135 0.0683 143 0.28 95
IV.MURB.HHZ. 2020-11-23T19:59:04.94 0.1 undecidable manual P 309 0.0468 153 0.26 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HHE. ML:1.2 0.0002385 0.26 AML other m 2020-11-23T19:59:06.74
IV.MURB.HHN. ML:1.2 0.0002475 0.34 AML other m 2020-11-23T19:59:06.83
IV.ATCC.EHN. ML:1.2 0.000214 0.34 AML other m 2020-11-23T19:59:07.31
IV.ATCC.EHE. ML:1.1 0.000191 0.32 AML other m 2020-11-23T19:59:07.35
IV.FOSV.EHN. ML:0.5 3.125E-5 0.32 AML other m 2020-11-23T19:59:09.25
IV.FOSV.EHE. ML:0.5 2.89E-5 0.3 AML other m 2020-11-23T19:59:09.34
IV.ASSB.HHN. ML:0.8 4.34E-5 0.1 AML other m 2020-11-23T19:59:10.93
IV.ASSB.HHE. ML:0.7 3.45E-5 0.3 AML other m 2020-11-23T19:59:11.09
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