Earthquake with magnitude of ML 1.0 on date 03-12-2021 and time 05:32:04 (Italy) in region 8 km NE Sansepolcro (AR)

A magnitude ML 1.0 earthquake occured in region: 8 km NE Sansepolcro (AR), on

  • 03-12-2021 04:32:04 (UTC)
  • 03-12-2021 05:32:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.618, 12.211 at 17 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 8 15884 15884
San Giustino PG 8 11297 27181
Borgo Pace PU 8 606 27787
Badia Tedalda AR 10 1087 28874
Mercatello sul Metauro PU 11 1378 30252
Sestino AR 12 1355 31607
Pieve Santo Stefano AR 15 3183 34790
Anghiari AR 15 5638 40428
Citerna PG 15 3531 43959
Monterchi AR 17 1757 45716
Sant'Angelo in Vado PU 17 4133 49849
Belforte all'Isauro PU 17 769 50618
CittĂ  di Castello PG 18 39913 90531
Apecchio PU 18 1882 92413
Caprese Michelangelo AR 18 1426 93839
Casteldelci RN 20 407 94246

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NE of Arezzo (99543 inhabitants)
57 Km SW of Rimini (147750 inhabitants)
58 Km S of Cesena (96758 inhabitants)
59 Km N of Perugia (166134 inhabitants)
65 Km SW of Pesaro (94582 inhabitants)
69 Km S of Forlì (117913 inhabitants)
70 Km W of Fano (60888 inhabitants)
78 Km E of Siena (53903 inhabitants)
79 Km E of Firenze (382808 inhabitants)
79 Km SE of Faenza (58541 inhabitants)
84 Km NW of Foligno (57155 inhabitants)
84 Km E of Scandicci (50609 inhabitants)
89 Km S of Ravenna (159116 inhabitants)
91 Km SE of Imola (69797 inhabitants)
94 Km E of Prato (191150 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 1.0 2021-12-03
04:32:04
43.6177 12.2108 17 2021-12-03
04:38:58
Sala Sismica INGV-Roma 98080351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-03 04:32:04 ± 0.08
Latitude 43.6177 ± 0.0072
Longitude 12.2108 ± 0.0037
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98080351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 626
Semi-minor axis of confidence ellipse (meter) 419
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 188
Circular confidence region, given by single value of horizontal uncertainty (meter) 630
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.07195
Epicentral distance of station farthest from the epicenter (degree) 0.268
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.4
Num. used stations 20
Type of magnitude ML
Reference to an origin 98080351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-03 04:38:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2021-12-03T04:32:14.93 0.3 undecidable manual S 109 0.2482 110 -0.07 74
IV.CRE.HHZ. 2021-12-03T04:32:13.30 0.3 undecidable manual S 270 0.188 119 -0.05 75
IV.APEC.HHZ. 2021-12-03T04:32:12.76 0.3 undecidable manual S 111 0.1628 124 0.04 75
IV.BADI.EHZ. 2021-12-03T04:32:11.41 0.3 undecidable manual S 167 0.1106 137 -0.14 75
IV.CPGN.EHZ. 2021-12-03T04:32:10.01 0.3 undecidable manual P 23 0.1996 117 0.05 75
IV.NARO.HHZ. 2021-12-03T04:32:10.87 1.0 positive manual P 91 0.268 108 -0.16 24
IV.PE3.EHZ. 2021-12-03T04:32:10.17 0.1 undecidable manual P 69 0.2203 114 -0.11 98
IV.PIEI.HHZ. 2021-12-03T04:32:10.73 0.1 undecidable manual P 109 0.2482 110 0.01 100
IV.CRE.HHZ. 2021-12-03T04:32:09.84 0.1 undecidable manual P 270 0.188 119 0.07 100
IV.APEC.HHZ. 2021-12-03T04:32:09.73 0.6 positive manual P 111 0.1628 124 0.32 47
IV.BADI.EHZ. 2021-12-03T04:32:08.87 0.1 positive manual P 167 0.1106 137 0.14 100
IV.SSP9.EHZ. 2021-12-03T04:32:08.18 0.6 positive manual P 233 0.0719 150 -0.16 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSP9.EHE. ML:1.2 0.0001591439 3.3184 AML other m 2021-12-03T04:32:08.35
IV.SSP9.EHN. ML:1.2 0.00014149015 2.3808 AML other m 2021-12-03T04:32:08.83
IV.BADI.EHE. ML:0.6 3.6375365E-5 0.1376 AML other m 2021-12-03T04:32:11.73
IV.BADI.EHN. ML:0.8 4.745523E-5 0.0992 AML other m 2021-12-03T04:32:11.72
IV.APEC.HHE. ML:0.8 4.4402635E-5 1.6192 AML other m 2021-12-03T04:32:11.17
IV.APEC.HHN. ML:0.7 2.8522295E-5 0.5984 AML other m 2021-12-03T04:32:12.60
IV.CRE.HHE. ML:0.2 1.0502363E-5 0.1792 AML other m 2021-12-03T04:32:13.67
IV.CRE.HHN. ML:0.4 1.693102E-5 0.1792 AML other m 2021-12-03T04:32:13.59
IV.CPGN.EHE. ML:1.4 0.0001557989 2.64 AML other m 2021-12-03T04:32:26.80
IV.CPGN.EHN. ML:1.9 0.00041244845 3.3408 AML other m 2021-12-03T04:32:14.05
IV.CPGN.HNE. ML:1.4 0.0001602985 0.8704 AML other m 2021-12-03T04:32:26.28
IV.CPGN.HNN. ML:1.6 0.00021690205 0.9984 AML other m 2021-12-03T04:32:17.54
IV.PE3.EHE. ML:1.3 9.7208835E-5 1.8976 AML other m 2021-12-03T04:32:23.84
IV.PE3.EHN. ML:1.3 0.0001049716 1.4016 AML other m 2021-12-03T04:32:12.45
IV.PIEI.HNE. ML:1.2 7.6357815E-5 0.4608 AML other m 2021-12-03T04:32:12.25
IV.PIEI.HNN. ML:1.3 0.00010071212 0.8 AML other m 2021-12-03T04:32:27.02
IV.PIEI.HHE. ML:0.5 1.4406067E-5 0.1376 AML other m 2021-12-03T04:32:15.21
IV.PIEI.HHN. ML:0.3 7.8943485E-6 0.1408 AML other m 2021-12-03T04:32:15.29
IV.NARO.HHE. ML:0.4 1.24613515E-5 0.0608 AML other m 2021-12-03T04:32:15.50
IV.NARO.HHN. ML:0.5 1.6466241E-5 0.0384 AML other m 2021-12-03T04:32:15.45
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