Earthquake with magnitude of ML 1.0 on date 24-10-2021 and time 03:49:50 (UTC) in region 6 km SW Serra Sant'Abbondio (PU)

A magnitude ML 1.0 earthquake occured in region: 6 km SW Serra Sant'Abbondio (PU), on

  • 24-10-2021 03:49:50 (UTC)
  • 24-10-2021 05:49:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.45, 12.725 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
Serra Sant'Abbondio PU 6 1027 1027
Scheggia e Pascelupo PG 7 1393 2420
Frontone PU 7 1300 3720
Cantiano PU 8 2245 5965
Costacciaro PG 10 1216 7181
Sassoferrato AN 11 7285 14466
Cagli PU 13 8731 23197
Sigillo PG 13 2404 25601
Pergola PU 16 6333 31934
Gubbio PG 16 32216 64150
Genga AN 17 1797 65947
Fossato di Vico PG 17 2840 68787
Arcevia AN 18 4612 73399
Acqualagna PU 19 4393 77792
Fabriano AN 19 31480 109272

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km NE of Perugia (166134 inhabitants)
50 Km SW of Fano (60888 inhabitants)
54 Km S of Pesaro (94582 inhabitants)
55 Km N of Foligno (57155 inhabitants)
67 Km W of Ancona (100861 inhabitants)
68 Km E of Arezzo (99543 inhabitants)
69 Km S of Rimini (147750 inhabitants)
86 Km SE of Cesena (96758 inhabitants)
99 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 1.0 2021-10-24
03:49:50
43.4497 12.7252 13 2021-10-24
04:12:17
Sala Sismica INGV-Roma 96928321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-24 03:49:50 ± 0.05
Latitude 43.4497 ± 0.0018
Longitude 12.7252 ± 0.0037
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 96928321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 340
Semi-minor axis of confidence ellipse (meter) 51
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 73
Circular confidence region, given by single value of horizontal uncertainty (meter) 340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.06835
Epicentral distance of station farthest from the epicenter (degree) 0.50002
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

Field Value
Value 1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 96928321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-24 04:12:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-10-24T03:50:00.85 0.3 undecidable manual P 136 0.5 93 0.05 69
IV.NARO.HHZ. 2021-10-24T03:49:59.11 0.1 undecidable manual S 327 0.1925 103 0.07 98
IV.MPAG.EHZ. 2021-10-24T03:49:58.74 0.1 undecidable manual S 8 0.1808 105 0.01 99
IV.ARVD.HHZ. 2021-10-24T03:49:58.14 0.1 undecidable manual S 73 0.1646 108 -0.1 98
IV.FOSV.EHZ. 2021-10-24T03:49:58.10 0.1 undecidable manual S 170 0.1565 109 0.06 98
IV.PIEI.HHZ. 2021-10-24T03:49:58.17 0.1 undecidable manual S 302 0.1628 108 -0.03 98
IV.EL6.EHZ. 2021-10-24T03:49:57.65 0.1 undecidable manual P 114 0.2986 96 0.28 91
IV.PE3.EHZ. 2021-10-24T03:49:57.53 0.1 undecidable manual P 326 0.2968 96 0.19 94
IV.SNTG.HHZ. 2021-10-24T03:49:56.37 0.1 undecidable manual P 141 0.25 98 -0.17 95
IV.FRON.EHZ. 2021-10-24T03:49:55.95 0.1 undecidable manual S 0 0.0683 142 0.07 100
IV.MPAG.EHZ. 2021-10-24T03:49:55.30 0.1 undecidable manual P 8 0.1808 105 -0.09 97
IV.NARO.HHZ. 2021-10-24T03:49:55.46 0.1 undecidable manual P 327 0.1925 103 -0.11 96
IV.FOSV.EHZ. 2021-10-24T03:49:54.94 0.1 undecidable manual P 170 0.1565 109 -0.05 99
IV.PIEI.HHZ. 2021-10-24T03:49:54.98 0.1 undecidable manual P 302 0.1628 108 -0.1 97
IV.ARVD.HHZ. 2021-10-24T03:49:54.97 0.1 undecidable manual P 73 0.1646 108 -0.14 97
IV.FRON.EHZ. 2021-10-24T03:49:53.83 0.1 undecidable manual P 0 0.0683 142 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHE. ML:1.2 0.000207 0.16 AML other m 2021-10-24T03:49:56.06
IV.FRON.EHN. ML:1.2 0.0001775 0.28 AML other m 2021-10-24T03:49:56.53
IV.FOSV.EHN. ML:1.2 0.00011995 0.1 AML other m 2021-10-24T03:49:58.24
IV.FOSV.EHE. ML:0.9 5.8E-5 0.08 AML other m 2021-10-24T03:49:58.21
IV.PIEI.HHN. ML:0.7 4.245E-5 0.16 AML other m 2021-10-24T03:49:58.40
IV.PIEI.HHE. ML:1 6.975E-5 0.24 AML other m 2021-10-24T03:49:58.40
IV.NARO.HHE. ML:0.8 4.455E-5 0.44 AML other m 2021-10-24T03:49:59.83
IV.NARO.HHN. ML:0.8 4.63E-5 0.42 AML other m 2021-10-24T03:50:00.96
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