Earthquake with magnitude of ML 0.4 on date 19-10-2021 and time 18:33:09 (Italy) in region 3 km E Sigillo (PG)

A magnitude ML 0.4 earthquake occured in region: 3 km E Sigillo (PG), on

  • 19-10-2021 16:33:09 (UTC)
  • 19-10-2021 18:33:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.326, 12.782 at 13 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
Sigillo PG 3 2404 2404
Fossato di Vico PG 4 2840 5244
Costacciaro PG 7 1216 6460
Fabriano AN 10 31480 37940
Gualdo Tadino PG 10 15208 53148
Scheggia e Pascelupo PG 13 1393 54541
Sassoferrato AN 14 7285 61826
Esanatoglia MC 16 2034 63860
Cerreto d'Esi AN 17 3817 67677
Gubbio PG 17 32216 99893
Genga AN 17 1797 101690
Serra Sant'Abbondio PU 19 1027 102717
Fiuminata MC 20 1402 104119

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NE of Perugia (166134 inhabitants)
42 Km N of Foligno (57155 inhabitants)
61 Km SW of Fano (60888 inhabitants)
66 Km S of Pesaro (94582 inhabitants)
68 Km W of Ancona (100861 inhabitants)
74 Km E of Arezzo (99543 inhabitants)
84 Km S of Rimini (147750 inhabitants)
86 Km N of Terni (111501 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 0.4 2021-10-19
16:33:09
43.3257 12.7815 13 2021-10-19
16:42:53
Sala Sismica INGV-Roma 96766401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-19 16:33:09 ± 0.08
Latitude 43.3257 ± 0.0045
Longitude 12.7815 ± 0.0062
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96766401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 550
Semi-minor axis of confidence ellipse (meter) 118
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 38
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) 89
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
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
Epicentral distance of station farthest from the epicenter (degree) 0.32016
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 96766401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-19 16:42:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2021-10-19T16:33:19.53 3.0 negative manual P -0.19 0
IV.MURB.HHZ. 2021-10-19T16:33:17.86 0.6 undecidable manual S 252 0.197 100 0.34 46
IV.ATCC.EHZ. 2021-10-19T16:33:16.56 0.6 undecidable manual S 216 0.1745 104 -0.29 47
IV.NARO.HHZ. 2021-10-19T16:33:15.52 0.6 undecidable manual P 333 0.3202 94 -0.56 41
IV.ATSC.EHZ. 2021-10-19T16:33:15.37 0.3 undecidable manual S 325 0.1205 118 0.02 74
IV.SSFR.HHZ. 2021-10-19T16:33:15.42 0.6 undecidable manual S 0 0.1106 122 0.31 47
IV.SNTG.HHZ. 2021-10-19T16:33:15.77 0.6 undecidable manual S 121 0.1358 113 0 49
IV.PIEI.HHZ. 2021-10-19T16:33:15.16 0.1 undecidable manual P 320 0.2761 95 -0.17 92
IV.EL6.EHE. 2021-10-19T16:33:14.57 0.1 undecidable manual P 89 0.2329 97 -0.03 97
IV.ATBU.EHZ. 2021-10-19T16:33:14.69 0.3 undecidable manual P 312 0.2266 98 0.21 71
IV.MURB.HHZ. 2021-10-19T16:33:14.10 0.3 undecidable manual P 252 0.197 100 0.11 72
IV.SNTG.HHZ. 2021-10-19T16:33:13.02 0.1 undecidable manual P 121 0.1358 113 0.04 98
IV.FOSV.EHZ. 2021-10-19T16:33:13.28 0.6 undecidable manual S 206 0.0342 159 -0.37 48
IV.ATCC.EHZ. 2021-10-19T16:33:13.62 0.3 positive manual P 216 0.1745 104 0.01 73
IV.ATSC.EHZ. 2021-10-19T16:33:12.80 0.3 undecidable manual P 325 0.1205 118 0.06 74
IV.SSFR.HHZ. 2021-10-19T16:33:12.68 0.1 undecidable manual P 0 0.1106 122 0.08 99
IV.FOSV.EHZ. 2021-10-19T16:33:11.77 0.1 undecidable manual P 206 0.0342 159 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HHE. ML:1.1 8.71E-5 0.22 AML other m 2021-10-19T16:33:18.31
IV.MURB.HHN. ML:1.1 8.22E-5 0.22 AML other m 2021-10-19T16:33:18.29
IV.FOSV.EHE. ML:0.2 2.0392735E-5 0.0768 AML other m 2021-10-19T16:33:13.46
IV.FOSV.EHN. ML:0.5 4.395092E-5 0.0896 AML other m 2021-10-19T16:33:13.44
IV.SNTG.HHE. ML:0.1 1.0465487E-5 0.0768 AML other m 2021-10-19T16:33:16.21
IV.SNTG.HHN. ML:0.1 1.07085065E-5 0.0768 AML other m 2021-10-19T16:33:15.97
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