Earthquake with magnitude of ML 1.0 on date 22-10-2021 and time 22:35:37 (Italy) in region 8 km SW Fossato di Vico (PG)

A magnitude ML 1.0 earthquake occured in region: 8 km SW Fossato di Vico (PG), on

  • 22-10-2021 20:35:37 (UTC)
  • 22-10-2021 22:35:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.249, 12.686 at 16 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
Fossato di Vico PG 8 2840 2840
Gualdo Tadino PG 8 15208 18048
Sigillo PG 10 2404 20452
Valfabbrica PG 12 3389 23841
Costacciaro PG 13 1216 25057
Gubbio PG 15 32216 57273
Scheggia e Pascelupo PG 17 1393 58666
Nocera Umbra PG 18 5839 64505

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NE of Perugia (166134 inhabitants)
33 Km N of Foligno (57155 inhabitants)
69 Km E of Arezzo (99543 inhabitants)
72 Km SW of Fano (60888 inhabitants)
76 Km S of Pesaro (94582 inhabitants)
77 Km N of Terni (111501 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
91 Km S of Rimini (147750 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 1.0 2021-10-22
20:35:37
43.2493 12.6857 16 2021-10-22
20:40:02
Sala Sismica INGV-Roma 96886721
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-22 20:35:37 ± 0.11
Latitude 43.2493 ± 0.0036
Longitude 12.6857 ± 0.0074
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96886721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 549
Semi-minor axis of confidence ellipse (meter) 347
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.07195
Epicentral distance of station farthest from the epicenter (degree) 0.41009
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 96886721
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-22 20:40:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-10-22T20:35:52.25 0.6 undecidable manual S 112 0.4101 99 0.51 43
IV.FDMO.HHZ. 2021-10-22T20:35:50.44 0.6 undecidable manual S 126 0.3615 101 0.09 47
IV.NARO.HHZ. 2021-10-22T20:35:50.80 0.6 undecidable manual S 348 0.3696 100 0.24 46
IV.MML1.EHZ. 2021-10-22T20:35:47.00 0.6 undecidable manual S 123 0.2491 108 -0.09 48
IV.FRON.EHZ. 2021-10-22T20:35:47.35 0.6 undecidable manual S 6 0.2698 106 -0.34 46
IV.CSP1.EHZ. 2021-10-22T20:35:45.68 1.0 positive manual P 112 0.4101 99 0.16 23
IV.ASSB.HHZ. 2021-10-22T20:35:45.77 0.6 undecidable manual S 185 0.2077 113 -0.18 47
IV.FDMO.HHZ. 2021-10-22T20:35:44.64 1.0 negative manual P 126 0.3615 101 -0.08 24
IV.NARO.HHZ. 2021-10-22T20:35:44.86 0.6 positive manual P 348 0.3696 100 0.02 48
IV.MURB.HHZ. 2021-10-22T20:35:43.94 0.3 undecidable manual S 277 0.1178 133 0.22 73
IV.FRON.EHZ. 2021-10-22T20:35:43.03 0.6 positive manual P 6 0.2698 106 -0.15 47
IV.EL6.EHZ. 2021-10-22T20:35:43.51 1.0 undecidable manual P 75 0.313 103 -0.39 22
IV.ATCC.EHZ. 2021-10-22T20:35:42.77 0.6 undecidable manual S 207 0.0719 149 -0.09 49
IV.MML1.EHZ. 2021-10-22T20:35:42.75 1.0 negative manual P 123 0.2491 108 -0.09 24
IV.ASSB.HHZ. 2021-10-22T20:35:41.99 1.0 undecidable manual P 185 0.2077 113 -0.19 24
IV.ATCC.EHZ. 2021-10-22T20:35:40.35 0.1 positive manual P 207 0.0719 149 -0.05 100
IV.MURB.HHZ. 2021-10-22T20:35:40.97 0.3 negative manual P 277 0.1178 133 0.08 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHE. ML:1.1 0.00012 1.62 AML other m 2021-10-22T20:35:42.96
IV.ATCC.EHN. ML:1.2 0.0001575 0.54 AML other m 2021-10-22T20:35:43.02
IV.MURB.HHN. ML:1.1 9.57E-5 1.34 AML other m 2021-10-22T20:35:44.28
IV.MURB.HHE. ML:1.1 9.325E-5 0.24 AML other m 2021-10-22T20:35:44.36
IV.ASSB.HHN. ML:0.6 2.495E-5 0.52 AML other m 2021-10-22T20:35:47.29
IV.ASSB.HHE. ML:0.6 2.265E-5 0.46 AML other m 2021-10-22T20:35:47.09
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download