Earthquake with magnitude of ML 1.1 on date 19-10-2021 and time 11:22:43 (Italy) in region 10 km E Foligno (PG)

A magnitude ML 1.1 earthquake occured in region: 10 km E Foligno (PG), on

  • 19-10-2021 09:22:43 (UTC)
  • 19-10-2021 11:22:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.963, 12.827 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
Foligno PG 10 57155 57155
Trevi PG 11 8469 65624
Sellano PG 12 1079 66703
Valtopina PG 12 1398 68101
Spello PG 13 8645 76746
Monte Cavallo MC 15 145 76891
Serravalle di Chienti MC 16 1070 77961
Montefalco PG 16 5679 83640
Campello sul Clitunno PG 16 2442 86082
Nocera Umbra PG 17 5839 91921
Cerreto di Spoleto PG 18 1075 92996
Bevagna PG 18 5081 98077
Preci PG 20 724 98801
Castel Ritaldi PG 20 3278 102079

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km E of Foligno (57155 inhabitants)
39 Km E of Perugia (166134 inhabitants)
47 Km NE of Terni (111501 inhabitants)
79 Km W of Teramo (54892 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
85 Km NE of Viterbo (67173 inhabitants)
92 Km SW of Ancona (100861 inhabitants)
95 Km SE of Arezzo (99543 inhabitants)
99 Km S of Fano (60888 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 1.1 2021-10-19
09:22:43
42.9632 12.8268 10 2021-10-19
09:29:51
Sala Sismica INGV-Roma 96756671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-19 09:22:43 ± 0.06
Latitude 42.9632 ± 0.0036
Longitude 12.8268 ± 0.0049
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 96756671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 426
Semi-minor axis of confidence ellipse (meter) 349
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 20
Circular confidence region, given by single value of horizontal uncertainty (meter) 430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
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) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.07015
Epicentral distance of station farthest from the epicenter (degree) 0.41729
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 96756671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-19 09:29:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MOMA.HHZ. 2021-10-19T09:22:54.02 0.3 undecidable manual S 230 0.2464 50 0.2 70
IV.ATCC.EHZ. 2021-10-19T09:22:54.33 0.3 undecidable manual S 328 0.2608 50 0.09 72
IV.GAVE.EHZ. 2021-10-19T09:22:54.48 0.3 undecidable manual S 170 0.2752 50 -0.19 70
IV.NRCA.HHZ. 2021-10-19T09:22:53.72 0.3 undecidable manual S 122 0.2473 50 -0.12 71
IV.EL6.EHZ. 2021-10-19T09:22:52.57 0.3 undecidable manual P 29 0.4173 50 0.03 70
IV.FDMO.HHZ. 2021-10-19T09:22:52.30 0.3 undecidable manual S 69 0.2041 114 -0.22 71
IV.CSP1.EHZ. 2021-10-19T09:22:50.73 0.3 undecidable manual P 65 0.3049 50 0.11 71
IV.GAVE.EHZ. 2021-10-19T09:22:50.02 0.3 undecidable manual P 170 0.2752 50 -0.1 71
IV.SNTG.HHZ. 2021-10-19T09:22:50.48 0.3 undecidable manual P 16 0.3031 50 -0.12 71
IV.ASSB.HHZ. 2021-10-19T09:22:50.11 0.3 undecidable manual S 303 0.1466 122 -0.45 68
IV.NRCA.HHZ. 2021-10-19T09:22:49.54 0.3 undecidable manual P 122 0.2473 50 -0.09 72
IV.MOMA.HHZ. 2021-10-19T09:22:49.85 0.3 undecidable manual P 230 0.2464 50 0.23 70
IV.ATCC.EHZ. 2021-10-19T09:22:49.83 0.3 undecidable manual P 328 0.2608 50 -0.04 73
IV.FDMO.HHZ. 2021-10-19T09:22:48.93 0.3 undecidable manual P 69 0.2041 114 0.06 73
IV.CESI.HHZ. 2021-10-19T09:22:48.42 0.1 undecidable manual S 54 0.0701 143 0.05 100
IV.ASSB.HHZ. 2021-10-19T09:22:47.74 0.3 undecidable manual P 303 0.1466 122 0 75
IV.CESI.HHZ. 2021-10-19T09:22:46.87 0.1 undecidable manual P 54 0.0701 143 0.4 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.4 0.0003275 1.4 AML other m 2021-10-19T09:22:48.72
IV.CESI.HHE. ML:1.3 0.0002785 0.16 AML other m 2021-10-19T09:22:48.76
IV.ASSB.HHE. ML:1.2 0.000152 0.2 AML other m 2021-10-19T09:22:50.57
IV.ASSB.HHN. ML:1.2 0.000136 0.36 AML other m 2021-10-19T09:22:50.59
IV.FDMO.HHE. ML:0.7 3.545E-5 0.56 AML other m 2021-10-19T09:22:52.69
IV.FDMO.HHN. ML:0.9 4.865E-5 0.56 AML other m 2021-10-19T09:22:53.13
IV.NRCA.HHN. ML:1.1 6.965E-5 0.14 AML other m 2021-10-19T09:22:53.86
IV.MOMA.HHE. ML:0.9 4.745E-5 0.14 AML other m 2021-10-19T09:22:54.68
IV.GAVE.EHE. ML:1.3 9.68E-5 0.5 AML other m 2021-10-19T09:22:54.65
IV.NRCA.HHE. ML:0.9 4.05E-5 1.22 AML other m 2021-10-19T09:22:55.00
IV.MOMA.HHN. ML:0.8 3.45E-5 0.64 AML other m 2021-10-19T09:22:55.23
IV.GAVE.EHN. ML:1.1 6.515E-5 0.18 AML other m 2021-10-19T09:22:55.42
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