Earthquake with magnitude of ML 0.9 on date 04-10-2021 and time 13:53:55 (UTC) in region 4 km S Fossato di Vico (PG)

A magnitude ML 0.9 earthquake occured in region: 4 km S Fossato di Vico (PG), on

  • 04-10-2021 13:53:55 (UTC)
  • 04-10-2021 15:53:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.262, 12.764 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
Fossato di Vico PG 4 2840 2840
Gualdo Tadino PG 4 15208 18048
Sigillo PG 8 2404 20452
Costacciaro PG 12 1216 21668
Fabriano AN 14 31480 53148
Esanatoglia MC 15 2034 55182
Fiuminata MC 16 1402 56584
Nocera Umbra PG 17 5839 62423
Valfabbrica PG 17 3389 65812
Scheggia e Pascelupo PG 18 1393 67205
Gubbio PG 18 32216 99421
Cerreto d'Esi AN 19 3817 103238
Sefro MC 20 422 103660

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km N of Foligno (57155 inhabitants)
35 Km E of Perugia (166134 inhabitants)
68 Km SW of Fano (60888 inhabitants)
73 Km SW of Ancona (100861 inhabitants)
73 Km S of Pesaro (94582 inhabitants)
75 Km E of Arezzo (99543 inhabitants)
78 Km N of Terni (111501 inhabitants)
90 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 0.9 2021-10-04
13:53:55
43.2618 12.764 10 2021-10-04
14:03:58
Sala Sismica INGV-Roma 96207641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-04 13:53:55 ± 0.06
Latitude 43.2618 ± 0.0036
Longitude 12.7640 ± 0.0037
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 96207641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 348
Semi-minor axis of confidence ellipse (meter) 315
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 184
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.03327
Epicentral distance of station farthest from the epicenter (degree) 0.32016
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 96207641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-04 14:03:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2021-10-04T13:54:07.73 0.3 undecidable manual S 329 0.3202 50 -0.04 73
IV.EL6.EHZ. 2021-10-04T13:54:06.21 0.3 undecidable manual S 75 0.2545 50 0.38 69
IV.ATLO.EHZ. 2021-10-04T13:54:06.07 0.3 undecidable manual S 282 0.2653 50 -0.06 73
IV.TB01.DHZ.01 2021-10-04T13:54:06.12 0.3 undecidable manual S 297 0.2671 50 -0.07 73
IV.FRON.EHZ. 2021-10-04T13:54:05.47 0.3 undecidable manual S 354 0.2572 50 -0.44 68
IV.MMUR.HNZ. 2021-10-04T13:54:05.53 0.3 undecidable manual S 43 0.2473 50 -0.08 73
IV.MML1.EHZ. 2021-10-04T13:54:04.33 0.3 undecidable manual S 134 0.2122 114 -0.23 72
IV.ASSB.HHZ. 2021-10-04T13:54:04.79 0.3 undecidable manual S 199 0.232 50 -0.37 69
IV.MURB.HHZ. 2021-10-04T13:54:03.60 0.3 undecidable manual S 270 0.1745 118 0.35 70
IV.SSFR.HNZ. 2021-10-04T13:54:03.07 0.3 undecidable manual S 4 0.1745 118 -0.2 73
IV.PIEI.HHZ. 2021-10-04T13:54:03.18 0.3 undecidable manual P 329 0.3202 50 0.53 65
IV.ATSC.EHZ. 2021-10-04T13:54:03.06 0.3 undecidable manual S 341 0.1718 118 -0.1 74
IV.ATCC.EHZ. 2021-10-04T13:54:01.61 0.3 undecidable manual S 230 0.1187 128 0.17 74
IV.FRON.EHZ. 2021-10-04T13:54:01.93 0.6 undecidable manual P 354 0.2572 50 0.36 46
IV.ASSB.HHZ. 2021-10-04T13:54:01.04 0.3 undecidable manual P 199 0.232 50 -0.1 73
IV.TB01.DHZ.01 2021-10-04T13:54:01.09 0.6 undecidable manual P 297 0.2671 50 -0.65 42
IV.SNTG.HHZ. 2021-10-04T13:54:01.69 0.3 undecidable manual S 93 0.1286 126 -0.06 75
IV.MMUR.HNZ. 2021-10-04T13:54:01.90 0.6 undecidable manual P 43 0.2473 50 0.5 45
IV.EL6.EHZ. 2021-10-04T13:54:01.63 0.3 undecidable manual P 75 0.2545 50 0.1 73
IV.ATBU.HNZ. 2021-10-04T13:54:01.72 1.0 undecidable manual P 324 0.2653 50 0.01 25
IV.ATLO.EHZ. 2021-10-04T13:54:01.58 0.6 undecidable manual P 282 0.2653 50 -0.12 48
IV.ATSC.EHZ. 2021-10-04T13:54:00.03 0.3 undecidable manual P 341 0.1718 118 0.05 75
IV.MURB.HHZ. 2021-10-04T13:54:00.21 0.3 undecidable manual P 270 0.1745 118 0.17 73
IV.MML1.EHZ. 2021-10-04T13:54:00.54 0.3 undecidable manual P 134 0.2122 114 -0.25 71
IV.SSFR.HNZ. 2021-10-04T13:54:00.09 0.1 undecidable manual P 4 0.1745 118 0.04 100
IV.ATCC.EHZ. 2021-10-04T13:53:59.20 0.3 undecidable manual P 230 0.1187 128 0.21 73
IV.SNTG.HHZ. 2021-10-04T13:53:59.44 0.1 undecidable manual P 93 0.1286 126 0.27 96
IV.FOSV.EHZ. 2021-10-04T13:53:58.96 0.3 undecidable manual S 356 0.0333 160 -0.47 70
IV.FOSV.EHZ. 2021-10-04T13:53:57.86 1.0 undecidable manual P 356 0.0333 160 0.03 26
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHE. ML:0 0.00012881475 0.224 AML other m 2021-10-04T13:53:59.06
IV.FOSV.EHN. ML:0 0.0002984709 0.1216 AML other m 2021-10-04T13:53:59.13
IV.SNTG.HHN. ML:0.9 7.5966015E-5 0.1792 AML other m 2021-10-04T13:54:02.01
IV.SNTG.HHE. ML:0.8 6.126112E-5 0.1408 AML other m 2021-10-04T13:54:01.96
IV.MURB.HHN. ML:1.1 9.635E-5 0.24 AML other m 2021-10-04T13:54:04.93
IV.MURB.HHE. ML:1 8.6609685E-5 0.1984 AML other m 2021-10-04T13:54:04.83
IV.SNTG.HNE. ML:0.8 6.374928E-5 0.1216 AML other m 2021-10-04T13:54:02.31
IV.SNTG.HNN. ML:0.9 8.051531E-5 0.0832 AML other m 2021-10-04T13:54:02.20
IV.ASSB.HHE. ML:0.8 3.378379E-5 0.16 AML other m 2021-10-04T13:54:05.08
IV.ASSB.HHN. ML:1 5.2884055E-5 0.1792 AML other m 2021-10-04T13:54:05.06
IV.EL6.EHE. ML:0.9 3.91249E-5 0.096 AML other m 2021-10-04T13:54:06.45
IV.EL6.EHN. ML:0.9 3.883453E-5 0.1408 AML other m 2021-10-04T13:54:06.71
IV.PIEI.HHE. ML:0.6 1.65562265E-5 0.0832 AML other m 2021-10-04T13:54:09.42
IV.PIEI.HHN. ML:0.4 8.374914E-6 0.1344 AML other m 2021-10-04T13:54:09.30
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