Earthquake with magnitude of ML 0.9 on date 05-07-2021 and time 20:41:23 (Italy) in region 4 km SW Radicofani (SI)

A magnitude ML 0.9 earthquake occured in region: 4 km SW Radicofani (SI), on

  • 05-07-2021 18:41:23 (UTC)
  • 05-07-2021 20:41:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8690, 11.7500 at 7 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
Radicofani SI 4 1097 1097
Piancastagnaio SI 5 4230 5327
Abbadia San Salvatore SI 6 6444 11771
San Casciano dei Bagni SI 10 1632 13403
Castell'Azzara GR 11 1476 14879
Santa Fiora GR 14 2622 17501
Proceno VT 14 557 18058
Cetona SI 16 2755 20813
Acquapendente VT 17 5506 26319
Sarteano SI 17 4717 31036
Seggiano GR 17 961 31997
Arcidosso GR 17 4285 36282
Castel del Piano GR 17 4690 40972
Castiglione d'Orcia SI 19 2346 43318
Allerona TR 19 1794 45112

Municipalities with at least 50000 inhabitants

An earthquake occurred to
53 Km E of Grosseto (82087 inhabitants)
58 Km NW of Viterbo (67173 inhabitants)
58 Km W of Perugia (166134 inhabitants)
60 Km SE of Siena (53903 inhabitants)
67 Km S of Arezzo (99543 inhabitants)
78 Km W of Foligno (57155 inhabitants)
81 Km W of Terni (111501 inhabitants)
86 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
Reviewed
Rev100
ML 0.9 2021-07-05
18:41:23
42.8688 11.7498 7 2021-07-05
18:49:34
Sala Sismica INGV-Roma 92268681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-05 18:41:23 ± 0.07
Latitude 42.8688 ± 0.0036
Longitude 11.7498 ± 0.0025
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 92268681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 390
Semi-minor axis of confidence ellipse (meter) 106
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 162
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.26890
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.6
Num. used stations 17
Type of magnitude ML
Reference to an origin 92268681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-05 18:49:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CLTA.HHZ. 2021-07-05T18:42:48.36 3.0 undecidable manual Pn 2.15 0
IV.BIOG.HHZ. 2021-07-05T18:42:42.74 3.0 undecidable manual Sg 4.5 0
IV.MILN.HNZ. 2021-07-05T18:42:41.74 3.0 undecidable manual Sn 0.53 0
IV.MTGR.HHZ. 2021-07-05T18:42:40.80 3.0 undecidable manual Pg 6.2 0
IV.EPZF.HHZ. 2021-07-05T18:42:38.08 3.0 positive manual Pn -1.72 0
IT.VALS.HNZ. 2021-07-05T18:42:38.90 3.0 undecidable manual Sn -0.39 0
IV.ERC.EHZ. 2021-07-05T18:42:37.31 3.0 undecidable manual Pg 4.77 0
IV.VOBA.EHZ. 2021-07-05T18:42:28.98 3.0 undecidable manual Sn -1.41 0
IV.COLB.HHZ. 2021-07-05T18:42:27.06 3.0 undecidable manual Sn -8.33 0
IV.NDIM.HNZ. 2021-07-05T18:42:13.49 3.0 undecidable manual Sg 2.31 0
GU.PCP.HHZ. 2021-07-05T18:42:09.74 3.0 undecidable manual Pg 8.81 0
IV.SARZ.HHZ. 2021-07-05T18:42:09.30 3.0 positive manual Pg 9.65 0
IV.MGR.HHZ. 2021-07-05T18:42:08.77 3.0 negative manual Pn -5.81 0
IV.LRP.EHZ. 2021-07-05T18:42:06.76 3.0 undecidable manual Sn -5.92 0
GU.RNCA.HHZ. 2021-07-05T18:42:01.95 3.0 undecidable manual Pg 5.07 0
IV.STAL.HHZ. 2021-07-05T18:42:00.04 3.0 undecidable manual Pn 0.27 0
IV.MCRV.HHZ. 2021-07-05T18:41:59.16 3.0 undecidable manual Pn -5.92 0
IV.SALO.HNZ. 2021-07-05T18:41:55.37 3.0 undecidable manual Pn -0.31 0
IV.FIR.HHZ. 2021-07-05T18:41:46.03 3.0 undecidable manual S 0 0
IV.MGAB.HHZ. 2021-07-05T18:41:34.09 0.3 undecidable manual S 81 29.8479 103 -0.13 71
IV.PESA.HHZ. 2021-07-05T18:41:33.45 3.0 undecidable manual S -5.12 0
IV.IMOL.HNZ. 2021-07-05T18:41:33.15 3.0 negative manual P -1.6 0
IV.ARCI.HHZ. 2021-07-05T18:41:31.51 0.6 undecidable manual S 265 22.3554 107 -0.22 47
IV.MGAB.HHZ. 2021-07-05T18:41:29.72 0.1 undecidable manual P 81 29.8479 103 -0.01 97
TV.SF14.HHZ. 2021-07-05T18:41:29.78 0.6 undecidable manual S 221 16.7721 112 -0.1 49
TV.SF01.EHZ. 2021-07-05T18:41:29.74 0.6 undecidable manual S 247 16.4724 113 -0.04 49
IV.ARCI.HHZ. 2021-07-05T18:41:28.37 0.6 positive manual P 265 22.3554 107 0.08 48
IV.MCIV.CHZ. 2021-07-05T18:41:28.48 0.6 undecidable manual S 211 11.6772 121 0.18 48
TV.SF14.HHZ. 2021-07-05T18:41:27.16 0.1 undecidable manual P 221 16.7721 112 -0.07 98
TV.SF01.EHZ. 2021-07-05T18:41:27.17 1.0 undecidable manual P 247 16.4724 113 0 25
TV.SF03.EHE. 2021-07-05T18:41:27.38 0.6 undecidable manual S 216 8.9799 128 -0.15 49
TV.SF04.EHZ. 2021-07-05T18:41:27.23 0.6 undecidable manual S 243 8.1807 130 -0.08 50
IV.MCIV.CHZ. 2021-07-05T18:41:26.32 0.1 undecidable manual P 211 11.6772 121 0.01 100
IV.SACS.HHZ. 2021-07-05T18:41:26.62 0.1 undecidable manual P 100 13.1757 118 0.04 99
TV.SF11.HHZ. 2021-07-05T18:41:26.66 0.6 undecidable manual S 270 5.7942 140 -0.07 50
TV.SF04.EHZ. 2021-07-05T18:41:25.86 0.1 positive manual P 243 8.1807 130 0.12 98
TV.SF11.HHZ. 2021-07-05T18:41:25.53 0.1 undecidable manual P 270 5.7942 140 0.13 99
IV.SAP2.EHZ. 2021-07-05T18:41:25.75 3.0 positive manual P -3.3 0
TV.SF03.EHE. 2021-07-05T18:41:25.93 0.1 undecidable manual P 216 8.9799 128 0.06 99
IV.ARVD.HHZ. 2021-07-05T18:41:22.42 3.0 negative manual P 0.44 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHE. ML:1.3 0.000013284523000000001 0.064 AML other m 2021-07-05T18:41:24.10
TV.SF04.EHE. ML:1.1 0.00023899999999999998 0.12 AML other m 2021-07-05T18:41:27.67
TV.SF04.EHN. ML:1.2 0.00031643565 0.2688 AML other m 2021-07-05T18:41:27.89
IV.MCIV.CHN. ML:0.8 0.00009267395000000001 0.1408 AML other m 2021-07-05T18:41:29.15
IV.MCIV.CHE. ML:0.7 0.00006797939 0.192 AML other m 2021-07-05T18:41:31.01
IV.SACS.HHN. ML:0.5 0.000039783275 0.1408 AML other m 2021-07-05T18:41:30.78
IV.SACS.HHE. ML:0.5 0.000035022765 0.2176 AML other m 2021-07-05T18:41:30.73
IV.ARCI.HHN. ML:0.6 0.00002794828 0.2432 AML other m 2021-07-05T18:41:33.80
IV.ARCI.HHE. ML:0.6 0.000030476105 0.1664 AML other m 2021-07-05T18:41:32.95
IV.STAL.HHN. ML:3.3 0.0001205 0.2 AML other m 2021-07-05T18:42:08.63
IV.STAL.HHE. ML:3.4 0.00016549999999999998 0.22 AML other m 2021-07-05T18:42:08.63
TV.SF01.EHE. ML:0.9 0.00006750514 0.256 AML other m 2021-07-05T18:41:30.32
TV.SF01.EHN. ML:0.8 0.00005628576 0.2048 AML other m 2021-07-05T18:41:29.88
IV.MGAB.HHE. ML:0.6 0.000018323672 0.1664 AML other m 2021-07-05T18:41:36.42
IV.MGAB.HHN. ML:0.6 0.00001992473 0.1536 AML other m 2021-07-05T18:41:35.42
IV.STAL.HNE. ML:3.3 0.00014177960000000001 0.1536 AML other m 2021-07-05T18:42:08.54
IV.STAL.HNN. ML:3.5 0.00019841145000000003 0.2176 AML other m 2021-07-05T18:42:08.63
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