Earthquake with magnitude of ML 1.2 on date 03-11-2021 and time 04:55:19 (Italy) in region 6 km NW Sansepolcro (AR)

A magnitude ML 1.2 earthquake occured in region: 6 km NW Sansepolcro (AR), on

  • 03-11-2021 03:55:19 (UTC)
  • 03-11-2021 04:55:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.609, 12.083 at 9 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
Sansepolcro AR 6 15884 15884
Pieve Santo Stefano AR 8 3183 19067
Anghiari AR 8 5638 24705
Caprese Michelangelo AR 9 1426 26131
San Giustino PG 10 11297 37428
Citerna PG 13 3531 40959
Monterchi AR 14 1757 42716
Badia Tedalda AR 14 1087 43803
Chiusi della Verna AR 16 2023 45826
Chitignano AR 17 899 46725
Subbiano AR 17 6331 53056
Borgo Pace PU 18 606 53662
Capolona AR 19 5438 59100

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Arezzo (99543 inhabitants)
60 Km S of Cesena (96758 inhabitants)
61 Km NW of Perugia (166134 inhabitants)
64 Km SW of Rimini (147750 inhabitants)
68 Km S of Forlì (117913 inhabitants)
69 Km E of Siena (53903 inhabitants)
69 Km E of Firenze (382808 inhabitants)
74 Km E of Scandicci (50609 inhabitants)
75 Km W of Pesaro (94582 inhabitants)
77 Km S of Faenza (58541 inhabitants)
80 Km W of Fano (60888 inhabitants)
85 Km E of Prato (191150 inhabitants)
88 Km SE of Imola (69797 inhabitants)
88 Km NW of Foligno (57155 inhabitants)
91 Km S of Ravenna (159116 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.2 2021-11-03
03:55:19
43.6088 12.0827 9 2021-11-03
03:59:48
Sala Sismica INGV-Roma 97183711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-03 03:55:19 ± 0.08
Latitude 43.6088 ± 0.0054
Longitude 12.0827 ± 0.0050
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97183711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 610
Semi-minor axis of confidence ellipse (meter) 387
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 11
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 79
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.04946
Epicentral distance of station farthest from the epicenter (degree) 0.49013
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:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 97183711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-03 03:59:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FRON.EHZ. 2021-11-03T03:55:37.18 0.1 undecidable manual S 101 0.4748 50 0.42 85
IV.NARO.HHZ. 2021-11-03T03:55:33.13 0.1 undecidable manual S 90 0.3606 50 -0.25 90
IV.PIEI.HHZ. 2021-11-03T03:55:32.38 0.1 undecidable manual S 102 0.3354 50 -0.27 91
IV.ATPI.EHZ. 2021-11-03T03:55:31.41 0.1 undecidable manual S 124 0.2806 50 0.4 89
IV.CPGN.EHZ. 2021-11-03T03:55:31.24 0.1 undecidable manual S 42 0.2581 108 0.94 73
IV.CAFI.HHZ. 2021-11-03T03:55:31.53 0.1 undecidable manual S 197 0.2923 50 0.17 93
IV.ASQU.HHZ. 2021-11-03T03:55:31.39 0.1 undecidable manual S 312 0.2833 50 0.3 91
IV.APEC.HHZ. 2021-11-03T03:55:30.05 0.1 undecidable manual S 102 0.2491 109 0.05 96
IV.FRON.EHZ. 2021-11-03T03:55:29.24 0.6 undecidable manual P 101 0.4748 50 -0.38 43
IV.MPAG.EHZ. 2021-11-03T03:55:29.67 1.0 positive manual P 87 0.4901 50 -0.22 22
IV.NARO.HHZ. 2021-11-03T03:55:27.13 0.6 undecidable manual P 90 0.3606 50 -0.54 42
IV.CAFI.HHZ. 2021-11-03T03:55:26.31 0.6 undecidable manual P 197 0.2923 50 -0.19 46
IV.SFI.EHZ. 2021-11-03T03:55:26.89 1.0 positive manual P 330 0.3408 50 -0.45 22
IV.PE3.EHZ. 2021-11-03T03:55:26.77 0.1 negative manual P 74 0.3112 50 -0.06 95
IV.BADI.EHZ. 2021-11-03T03:55:26.85 0.1 undecidable manual S 130 0.1538 119 0.25 94
IV.ATPI.EHZ. 2021-11-03T03:55:26.08 1.0 undecidable manual P 124 0.2806 50 -0.22 23
IV.CPGN.EHZ. 2021-11-03T03:55:26.19 1.0 undecidable manual P 42 0.2581 108 0.3 23
IV.PIEI.HHZ. 2021-11-03T03:55:26.78 0.6 negative manual P 102 0.3354 50 -0.46 43
IV.APEC.HHZ. 2021-11-03T03:55:25.58 0.3 negative manual P 102 0.2491 109 -0.13 71
IV.ASQU.HHZ. 2021-11-03T03:55:25.84 1.0 positive manual P 312 0.2833 50 -0.51 22
IV.PARC.HHZ. 2021-11-03T03:55:24.90 0.1 undecidable manual S 71 0.1196 125 -0.6 87
IV.CRE.HHZ. 2021-11-03T03:55:24.65 0.1 undecidable manual S 276 0.0953 131 -0.11 98
IV.SSP9.EHZ. 2021-11-03T03:55:23.75 0.1 undecidable manual S 135 0.0495 149 0.12 99
IV.BADI.EHZ. 2021-11-03T03:55:23.81 0.3 positive manual P 130 0.1538 119 0.05 74
IV.SSP9.EHZ. 2021-11-03T03:55:22.09 0.1 positive manual P 135 0.0495 149 0.05 100
IV.CRE.HHZ. 2021-11-03T03:55:22.68 0.1 positive manual P 276 0.0953 131 -0.01 100
IV.PARC.HHZ. 2021-11-03T03:55:22.81 0.6 undecidable manual P 71 0.1196 125 -0.31 47
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSP9.EHN. ML:1.2 0.000278 0.72 AML other m 2021-11-03T03:55:23.87
IV.SSP9.EHE. ML:1.2 0.000257 0.46 AML other m 2021-11-03T03:55:24.75
IV.PARC.HHN. ML:1.2 0.000159 0.24 AML other m 2021-11-03T03:55:25.18
IV.CRE.HHN. ML:1.1 0.000154 0.2 AML other m 2021-11-03T03:55:25.36
IV.PARC.HHE. ML:1.2 0.000166 0.64 AML other m 2021-11-03T03:55:26.11
IV.CRE.HHE. ML:0.9 0.00010465 0.64 AML other m 2021-11-03T03:55:26.28
IV.BADI.EHN. ML:0.8 6.19E-5 0.62 AML other m 2021-11-03T03:55:27.34
IV.BADI.EHE. ML:1 8.845E-5 0.62 AML other m 2021-11-03T03:55:28.62
IV.APEC.HHN. ML:1.3 0.00010035 1.1 AML other m 2021-11-03T03:55:30.36
IV.APEC.HHE. ML:1.5 0.000161 0.36 AML other m 2021-11-03T03:55:30.89
IV.PIEI.HHN. ML:1.2 5.32E-5 1.88 AML other m 2021-11-03T03:55:33.04
IV.PIEI.HHE. ML:1.3 7.595E-5 0.12 AML other m 2021-11-03T03:55:33.30
IV.CPGN.HNN. ML:1.9 0.000438 0.4 AML other m 2021-11-03T03:55:36.71
IV.CPGN.HNE. ML:1.7 0.0002615 1.6 AML other m 2021-11-03T03:55:36.09
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