Earthquake with magnitude of ML 1.6 on date 19-09-2021 and time 08:07:48 (Italy) in region 6 km S Montieri (GR)

A magnitude ML 1.6 earthquake occured in region: 6 km S Montieri (GR), on

  • 19-09-2021 06:07:48 (UTC)
  • 19-09-2021 08:07:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0760, 11.0280 at 10 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
Montieri GR 6 1204 1204
Chiusdino SI 10 1903 3107
Massa Marittima GR 12 8375 11482
Roccastrada GR 13 9199 20681
Monticiano SI 14 1571 22252
Monterotondo Marittimo GR 16 1371 23623
Castelnuovo di Val di Cecina PI 18 2231 25854
Gavorrano GR 19 8580 34434

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km N of Grosseto (82087 inhabitants)
37 Km SW of Siena (53903 inhabitants)
77 Km S of Scandicci (50609 inhabitants)
79 Km SE of Livorno (159219 inhabitants)
79 Km S of Firenze (382808 inhabitants)
82 Km SW of Arezzo (99543 inhabitants)
87 Km SE of Pisa (89158 inhabitants)
90 Km S of Prato (191150 inhabitants)
96 Km SE of Lucca (89046 inhabitants)
96 Km S of Pistoia (90315 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
Bulletin
Rev1000
ML 1.6 2021-09-19
06:07:48
43.0758 11.0278 10 2022-03-30
13:04:12
Bollettino Sismico Italiano INGV 96763761
Reviewed
Rev100
ML 1.6 2021-09-19
06:07:48
43.0792 11.018 10 2021-09-19
06:16:36
Sala Sismica INGV-Roma 95621661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-19 06:07:48 ± 0.12
Latitude 43.0758 ± 0.0063
Longitude 11.0278 ± 0.0086
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96763761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 649
Semi-minor axis of confidence ellipse (meter) 619
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 17
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.09893
Epicentral distance of station farthest from the epicenter (degree) 0.72935
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
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 96763761
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-19 13:49:03

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 95621661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-19 06:16:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CELB.HHZ. 2021-09-19T06:08:11.06 0.6 undecidable manual S 241 75.7686 50 0.04 44
TV.SF03.EHE. 2021-09-19T06:08:06.34 0.3 undecidable manual S 119 61.3941 50 -0.85 54
TV.SF11.HHZ. 2021-09-19T06:08:06.14 0.3 undecidable manual S 113 57.5979 50 -0.04 69
IV.MCIV.CHN. 2021-09-19T06:08:06.41 0.3 undecidable manual S 122 62.1933 50 -0.97 51
TV.SF04.EHZ. 2021-09-19T06:08:06.92 1.0 undecidable manual S 117 57.8976 50 0.68 19
TV.SF14.HHZ. 2021-09-19T06:08:05.78 0.3 undecidable manual S 127 59.496 50 -0.89 53
IV.OSSC.HHZ. 2021-09-19T06:08:04.67 0.3 undecidable manual S 19 52.7028 50 -0.19 68
IV.CSNT.HHZ. 2021-09-19T06:08:03.48 0.3 undecidable manual S 26 48.9177 50 -0.37 66
IV.CELB.HHZ. 2021-09-19T06:08:02.21 0.1 undecidable manual P 241 75.7686 50 0.85 70
IV.CAFI.HHZ. 2021-09-19T06:08:02.77 0.1 undecidable manual P 69 80.9523 50 0.61 77
IV.ARCI.HHZ. 2021-09-19T06:08:01.80 0.3 undecidable manual S 124 44.0226 50 -0.74 58
IV.MCIV.CHN. 2021-09-19T06:07:59.70 0.1 undecidable manual P 122 62.1933 50 0.44 84
TV.SF04.EHZ. 2021-09-19T06:07:59.04 0.1 undecidable manual P 117 57.8976 50 0.44 85
IV.CASP.HHZ. 2021-09-19T06:07:59.31 0.3 undecidable manual S 203 34.2435 50 -0.63 62
TV.SF14.HHZ. 2021-09-19T06:07:59.27 0.1 undecidable manual P 127 59.496 50 0.42 85
IV.MAGO.CHE. 2021-09-19T06:07:59.80 0.3 undecidable manual S 306 37.0296 50 -0.89 55
TV.SF03.EHE. 2021-09-19T06:07:59.61 0.1 undecidable manual P 119 61.3941 50 0.46 84
TV.SF11.HHZ. 2021-09-19T06:07:58.95 0.1 undecidable manual P 113 57.5979 50 0.38 86
IV.OSSC.HHZ. 2021-09-19T06:07:58.25 0.1 undecidable manual P 19 52.7028 50 0.44 85
IV.CSNT.HHZ. 2021-09-19T06:07:57.52 0.1 undecidable manual P 26 48.9177 50 0.3 89
IV.ARCI.HHZ. 2021-09-19T06:07:56.63 0.1 undecidable manual P 124 44.0226 50 0.16 92
IV.MAGO.CHE. 2021-09-19T06:07:55.45 0.1 undecidable manual P 306 37.0296 50 0.05 95
IV.CASP.HHZ. 2021-09-19T06:07:55.04 0.1 undecidable manual P 203 34.2435 50 0.07 95
IV.FROS.CHZ. 2021-09-19T06:07:54.77 0.3 undecidable manual S 35 18.1707 120 -0.64 64
IV.RIBO.EHZ.01 2021-09-19T06:07:53.99 0.3 undecidable manual S 174 14.1747 126 -0.26 71
IV.FROS.CHZ. 2021-09-19T06:07:52.38 0.1 undecidable manual P 35 18.1707 120 0.03 99
IV.TRIF.CHZ. 2021-09-19T06:07:52.82 0.3 undecidable manual S 293 10.9779 133 -0.6 66
IV.TRIF.CHZ. 2021-09-19T06:07:51.24 0.1 undecidable manual P 293 10.9779 133 0.04 100
IV.RIBO.EHZ.01 2021-09-19T06:07:51.81 0.1 undecidable manual P 174 14.1747 126 0.13 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHN. ML:2.0 0.001295 0.08 AML other m 2021-09-19T06:07:52.93
IV.TRIF.CHE. ML:2.0 0.0011978681500000002 0.08 AML other m 2021-09-19T06:07:53.12
IV.RIBO.EHE.01 ML:1.9 0.00085525295 0.1792 AML other m 2021-09-19T06:07:54.15
IV.FROS.CHN. ML:1.8 0.0005354149 0.1984 AML other m 2021-09-19T06:07:55.17
IV.FROS.CHE. ML:1.8 0.0004678135 0.1984 AML other m 2021-09-19T06:07:55.17
IV.CASP.HHN. ML:1.4 0.00011047949499999998 0.1184 AML other m 2021-09-19T06:07:59.46
IV.CASP.HHE. ML:1.5 0.00011968400000000001 0.16 AML other m 2021-09-19T06:07:59.49
IV.CASP.HNE. ML:1.5 0.00012469202499999999 0.0896 AML other m 2021-09-19T06:07:59.72
IV.ARCI.HNN. ML:1.5 0.00010415568999999999 1.8784 AML other m 2021-09-19T06:08:01.04
IV.ARCI.HHN. ML:1.6 0.00011092242 1.8976 AML other m 2021-09-19T06:08:01.03
IV.ARCI.HHE. ML:1.6 0.00011499999999999999 0.46 AML other m 2021-09-19T06:08:02.80
IV.ARCI.HNE. ML:1.4 0.000085483825 0.1312 AML other m 2021-09-19T06:08:02.58
IV.CSNT.HHN. ML:1.2 0.00004115 0.24 AML other m 2021-09-19T06:08:03.80
IV.CSNT.HHE. ML:1.0 0.000026600000000000003 0.44 AML other m 2021-09-19T06:08:04.29
IV.OSSC.HHE. ML:0.9 0.000020826655 0.2816 AML other m 2021-09-19T06:08:05.72
TV.SF04.EHN. ML:1.8 0.00014057315 0.2592 AML other m 2021-09-19T06:08:08.84
IV.CELB.HHN. ML:1.4 0.000037989425 0.1216 AML other m 2021-09-19T06:08:13.43
IV.CELB.HHE. ML:1.6 0.00006022221 0.08 AML other m 2021-09-19T06:08:13.57
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