Earthquake with magnitude of ML 1.6 on date 01-12-2019 and time 00:40:05 (Italy) in region 1 km SW Radicofani (SI)

A magnitude ML 1.6 earthquake occured in region: 1 km SW Radicofani (SI), on

  • 30-11-2019 23:40:05 (UTC)
  • 01-12-2019 00:40:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.89, 11.76 at 7 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Radicofani SI 1 1097 1097
Abbadia San Salvatore SI 7 6444 7541
Piancastagnaio SI 7 4230 11771
San Casciano dei Bagni SI 10 1632 13403
Cetona SI 14 2755 16158
Castell'Azzara GR 14 1476 17634
Sarteano SI 14 4717 22351
Santa Fiora GR 16 2622 24973
Proceno VT 16 557 25530
Seggiano GR 17 961 26491
Castiglione d'Orcia SI 17 2346 28837
Arcidosso GR 18 4285 33122
Castel del Piano GR 18 4690 37812
Acquapendente VT 19 5506 43318
Chianciano Terme SI 20 7105 50423
Allerona TR 20 1794 52217

Municipalities with at least 50000 inhabitants

An earthquake occurred to
55 Km E of Grosseto (82087 inhabitants)
57 Km W of Perugia (166134 inhabitants)
59 Km SE of Siena (53903 inhabitants)
60 Km NW of Viterbo (67173 inhabitants)
65 Km S of Arezzo (99543 inhabitants)
77 Km W of Foligno (57155 inhabitants)
81 Km W of Terni (111501 inhabitants)
89 Km N of Civitavecchia (52991 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 ML 1.6 2019-11-30
23:40:05
42.89 11.76 7 2020-02-28
16:42:27
Bollettino Sismico Italiano INGV 76781571
Rev 100 ML 1.6 2019-11-30
23:40:05
42.88 11.76 10 2019-11-30
23:46:43
Sala Sismica INGV-Roma 74202791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-11-30 23:40:05 ± 0.09
Latitude 42.89 ± 0.01
Longitude 11.76 ± 0.01
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76781571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1262
Semi-minor axis of confidence ellipse (meter) 388
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 170
Circular confidence region, given by single value of horizontal uncertainty (meter) 1260
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.09173
Epicentral distance of station farthest from the epicenter (degree) 0.73295
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 76781571
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-24 18:34:17

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 74202791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-11-30 23:46:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.OSSC.HNE. 2019-11-30T23:40:20.42 0.3 undecidable manual P 330 0.7329 50 0.01 66
IV.CSNT.HHZ. 2019-11-30T23:40:19.12 0.1 undecidable manual P 330 0.6736 50 -0.27 85
IV.TRIF.CHZ. 2019-11-30T23:40:19.65 0.1 undecidable manual P 290 0.6637 50 0.42 82
IV.FROS.CHZ. 2019-11-30T23:40:17.08 0.1 undecidable manual P 306 0.5423 50 -0.07 91
IV.RIBO.EHE.01 2019-11-30T23:40:17.19 0.3 undecidable manual P 276 0.5243 50 0.34 65
IV.MGAB.HHZ. 2019-11-30T23:40:16.26 0.6 undecidable manual S 85 0.259 103 0.12 48
IV.ARCI.HHZ. 2019-11-30T23:40:13.87 0.6 undecidable manual S 259 0.2113 106 -0.5 44
TV.SF01.EHZ. 2019-11-30T23:40:12.44 0.6 undecidable manual S 241 0.1646 110 -0.21 48
IV.MCIV.CHZ. 2019-11-30T23:40:11.38 0.6 undecidable manual S 208 0.1295 115 0 50
IV.MGAB.HHZ. 2019-11-30T23:40:11.32 0.1 undecidable manual P 85 0.259 103 -0.49 88
IV.LATE.HHZ. 2019-11-30T23:40:11.86 0.1 undecidable manual P 173 0.2806 102 -0.42 89
IV.SACS.HHZ. 2019-11-30T23:40:11.76 0.6 undecidable manual S 112 0.1187 117 0.74 41
TV.SF04.EHZ. 2019-11-30T23:40:10.31 0.6 undecidable manual S 232 0.0917 123 0.18 49
IV.ARCI.HHZ. 2019-11-30T23:40:10.86 0.1 positive manual P 259 0.2113 106 0.07 97
IV.MCIV.CHZ. 2019-11-30T23:40:09.06 0.1 positive manual P 208 0.1295 115 0 100
TV.SF01.EHZ. 2019-11-30T23:40:09.93 0.1 positive manual P 241 0.1646 110 0.14 97
IV.SACS.HHZ. 2019-11-30T23:40:08.94 0.1 undecidable manual P 112 0.1187 117 0.09 98
TV.SF04.EHZ. 2019-11-30T23:40:08.48 0.1 undecidable manual P 232 0.0917 123 0.14 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
TV.SF04.EHN. ML:2.5 0.00433 0.12 AML other m 2019-11-30T23:40:10.59
TV.SF04.EHE. ML:2.4 0.003665 0.3 AML other m 2019-11-30T23:40:10.64
IV.MCIV.CHE. ML:1.8 0.000705 0.32 AML other m 2019-11-30T23:40:11.70
IV.MCIV.CHN. ML:2 0.001053 1.42 AML other m 2019-11-30T23:40:11.84
IV.SACS.HNN. ML:1.5 0.0003665 1.24 AML other m 2019-11-30T23:40:12.62
TV.SF01.EHE. ML:1.8 0.0005445 0.32 AML other m 2019-11-30T23:40:13.02
TV.SF01.EHN. ML:1.8 0.0005855 1.68 AML other m 2019-11-30T23:40:13.96
IV.ARCI.HHN. ML:1.6 0.0002335 0.3 AML other m 2019-11-30T23:40:14.20
IV.ARCI.HHE. ML:1.5 0.0002085 0.36 AML other m 2019-11-30T23:40:14.47
IV.SACS.HHN. ML:1.4 0.0003085 0.42 AML other m 2019-11-30T23:40:15.13
IV.SACS.HNE. ML:1.5 0.000388 0.38 AML other m 2019-11-30T23:40:16.18
IV.SACS.HHE. ML:1.5 0.000377 0.42 AML other m 2019-11-30T23:40:16.18
IV.MGAB.HHN. ML:1.4 0.00012335 1.16 AML other m 2019-11-30T23:40:17.19
IV.MGAB.HNN. ML:1.3 0.0001155 0.42 AML other m 2019-11-30T23:40:18.12
IV.MGAB.HNE. ML:1.3 0.00011725 0.9 AML other m 2019-11-30T23:40:18.75
IV.MGAB.HHE. ML:1.4 0.0001346 1.18 AML other m 2019-11-30T23:40:18.75
IV.LATE.HHN. ML:1.7 0.0002285 1.08 AML other m 2019-11-30T23:40:19.77
IV.LATE.HHE. ML:1.5 0.000151 0.78 AML other m 2019-11-30T23:40:19.57
IV.ATTE.HHN. ML:0 7.865E-5 0.28 AML other m 2019-11-30T23:40:26.15
IV.ATTE.HHE. ML:0 7.27E-5 0.48 AML other m 2019-11-30T23:40:27.42
IV.MURB.HHN. ML:0 0.0002385 0.3 AML other m 2019-11-30T23:40:32.40
IV.MURB.HHE. ML:0 0.0001835 1.08 AML other m 2019-11-30T23:40:33.91
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download