Earthquake with magnitude of ML 1.3 on date 19-09-2021 and time 11:51:34 (Italy) in region 7 km S Montieri (GR)

A magnitude ML 1.3 earthquake occured in region: 7 km S Montieri (GR), on

  • 19-09-2021 09:51:34 (UTC)
  • 19-09-2021 11:51:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.069, 11.034 at 10 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
Montieri GR 7 1204 1204
Chiusdino SI 11 1903 3107
Massa Marittima GR 12 8375 11482
Roccastrada GR 13 9199 20681
Monticiano SI 14 1571 22252
Monterotondo Marittimo GR 17 1371 23623
Castelnuovo di Val di Cecina PI 19 2231 25854
Gavorrano GR 19 8580 34434

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Grosseto (82087 inhabitants)
37 Km SW of Siena (53903 inhabitants)
78 Km S of Scandicci (50609 inhabitants)
80 Km SE of Livorno (159219 inhabitants)
80 Km S of Firenze (382808 inhabitants)
82 Km SW of Arezzo (99543 inhabitants)
88 Km SE of Pisa (89158 inhabitants)
91 Km S of Prato (191150 inhabitants)
96 Km SE of Lucca (89046 inhabitants)
97 Km S of Pistoia (90315 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 the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.3 2021-09-19
09:51:34
43.0692 11.0343 10 2021-09-19
10:02:51
Sala Sismica INGV-Roma 95628861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-19 09:51:34 ± 0.14
Latitude 43.0692 ± 0.0081
Longitude 11.0343 ± 0.0111
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95628861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 879
Semi-minor axis of confidence ellipse (meter) 755
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 56
Circular confidence region, given by single value of horizontal uncertainty (meter) 880
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.44426
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 95628861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-19 10:02:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
HL.VLS.HHZ. 2021-09-19T09:53:33.14 3.0 undecidable manual Pg 15.21 0
GU.BHB.HHZ. 2021-09-19T09:53:21.40 3.0 undecidable manual Sn -0.54 0
IV.SLCN.HHZ. 2021-09-19T09:53:10.47 3.0 undecidable manual Sg 11.4 0
MN.PDG.HHZ. 2021-09-19T09:53:03.07 3.0 negative manual Pg 19.6 0
IV.VOBA.EHZ. 2021-09-19T09:52:58.90 3.0 undecidable manual Sn -0.97 0
IV.SELL.HHZ. 2021-09-19T09:52:50.63 3.0 positive manual Pg 12.19 0
IV.MPNC.HHZ. 2021-09-19T09:52:49.42 3.0 positive manual Pg 9.53 0
MN.CLTB.HHZ. 2021-09-19T09:52:45.75 3.0 positive manual Pg 5.81 0
CR.ZAG.BHZ. 2021-09-19T09:52:45.94 3.0 undecidable manual Pg 15.27 0
IX.SNR3.EHZ.02 2021-09-19T09:52:41.66 3.0 undecidable manual Sn -5.72 0
IX.COL3.HHZ.02 2021-09-19T09:52:41.51 3.0 undecidable manual Sn -8.59 0
OX.CIMO.HHZ. 2021-09-19T09:52:31.98 3.0 undecidable manual Pg 8.01 0
CR.STON.BHZ. 2021-09-19T09:52:28.72 3.0 undecidable manual Pn 1.12 0
IV.IMOL.HNZ. 2021-09-19T09:52:27.37 3.0 undecidable manual Sg 3.7 0
IV.VULT.HHZ. 2021-09-19T09:52:17.86 3.0 undecidable manual Pg 5.18 0
IV.MCRV.HHZ. 2021-09-19T09:52:13.78 3.0 undecidable manual Pg 3.54 0
IT.GNV.HGZ. 2021-09-19T09:52:13.88 3.0 undecidable manual Pn 0.26 0
IV.PE3.EHZ. 2021-09-19T09:52:07.48 3.0 undecidable manual S 0.21 0
IX.MNT3.EHZ.02 2021-09-19T09:52:00.64 3.0 positive manual Pn -7.82 0
IV.VIVA.HHZ. 2021-09-19T09:51:52.36 3.0 undecidable manual S -4.04 0
IV.CSNT.HHZ. 2021-09-19T09:51:50.17 0.6 undecidable manual S 25 0.4443 50 -0.24 46
IV.ARCI.HHZ. 2021-09-19T09:51:48.64 0.3 undecidable manual S 124 0.3885 50 -0.12 71
IV.OSSC.HHZ. 2021-09-19T09:51:47.41 3.0 undecidable manual P -1.18 0
IV.MAGO.CHE. 2021-09-19T09:51:46.70 0.3 undecidable manual S 307 0.3417 50 -0.67 62
IV.SF14.HHZ. 2021-09-19T09:51:46.18 3.0 undecidable manual S 0
IV.CASP.HHZ. 2021-09-19T09:51:46.12 0.3 undecidable manual S 204 0.304 50 -0.14 72
IV.MMUR.HNZ. 2021-09-19T09:51:45.69 3.0 positive manual P -1.1 0
TV.SF04.EHZ. 2021-09-19T09:51:45.91 3.0 undecidable manual S 1.48 0
IV.CSNT.HHZ. 2021-09-19T09:51:44.32 0.3 undecidable manual P 25 0.4443 50 0.63 62
IV.CPGN.EHZ. 2021-09-19T09:51:43.72 3.0 undecidable manual P -5.79 0
IV.ARCI.HHZ. 2021-09-19T09:51:42.24 0.1 undecidable manual P 124 0.3885 50 -0.49 88
IV.MAGO.CHE. 2021-09-19T09:51:42.33 0.1 undecidable manual P 307 0.3417 50 0.4 90
IV.APEC.HHZ. 2021-09-19T09:51:42.53 3.0 undecidable manual P 0
IV.CASP.HHZ. 2021-09-19T09:51:41.92 0.1 undecidable manual P 204 0.304 50 0.63 85
IV.FROS.CHZ. 2021-09-19T09:51:41.60 0.3 undecidable manual S 32 0.1664 118 -0.15 74
IV.SF14.HHZ. 2021-09-19T09:51:41.48 3.0 undecidable manual P 0
IV.FROS.CHZ. 2021-09-19T09:51:39.19 0.6 positive manual P 32 0.1664 118 0.5 46
IV.TRIF.CHN. 2021-09-19T09:51:39.60 0.3 undecidable manual S 295 0.1061 130 -0.23 74
IV.VIVA.HHZ. 2021-09-19T09:51:38.04 3.0 positive manual P -4.16 0
IV.TRIF.CHN. 2021-09-19T09:51:37.59 0.3 undecidable manual P 295 0.1061 130 0.01 77
IV.RIBO.EHZ.01 2021-09-19T09:51:37.70 0.1 undecidable manual P 176 0.1205 126 -0.12 100
IV.ARRO.EHZ. 2021-09-19T09:51:34.03 3.0 undecidable manual S -7 0
IV.SRES.HHZ. 2021-09-19T09:51:28.14 3.0 positive manual P -3.69 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CASP.HHE. ML:1.4 9.4362145E-5 0.16 AML other m 2021-09-19T09:51:46.30
IV.CASP.HHN. ML:1.4 9.6245095E-5 0.1792 AML other m 2021-09-19T09:51:46.30
IV.ARCI.HHN. ML:1.3 6.0E-5 1.08 AML other m 2021-09-19T09:51:48.23
IV.ARCI.HHE. ML:1.2 5.047493E-5 0.1216 AML other m 2021-09-19T09:51:48.83
IV.SRES.HHE. ML:1.3 7.5528595E-6 0.2624 AML other m 2021-09-19T09:51:35.24
IV.SRES.HHN. ML:1 6.4348295E-6 0.1024 AML other m 2021-09-19T09:51:34.97
IV.RIBO.EHE.01 ML:1.1 0.00013864498 0.16 AML other m 2021-09-19T09:51:43.69
IV.VIVA.HHE. ML:3.2 0.00045197825 0.0576 AML other m 2021-09-19T09:51:55.57
IV.VIVA.HHN. ML:3.2 0.00042578815 0.2816 AML other m 2021-09-19T09:51:45.64
IV.FROS.CHN. ML:1.4 0.0002226956 0.2496 AML other m 2021-09-19T09:51:43.80
IV.FROS.CHE. ML:1.4 0.000213046 0.1856 AML other m 2021-09-19T09:51:42.01
IV.CASP.HNN. ML:1.4 0.00010805595 0.832 AML other m 2021-09-19T09:52:06.09
IV.CASP.HNE. ML:1.4 9.8985645E-5 0.16 AML other m 2021-09-19T09:51:46.22
IV.ARCI.HNN. ML:1.3 6.013588E-5 0.1152 AML other m 2021-09-19T09:51:48.77
IV.ARCI.HNE. ML:1.2 4.7664725E-5 0.1216 AML other m 2021-09-19T09:51:49.60
IV.APEC.HNN. ML:3.1 0.0008291461 1.6704 AML other m 2021-09-19T09:51:53.31
IV.APEC.HHE. ML:1.3 1.718808E-5 0.1024 AML other m 2021-09-19T09:51:50.36
IV.APEC.HHN. ML:1.6 2.2677255E-5 0.0832 AML other m 2021-09-19T09:51:51.40
IV.APEC.HNE. ML:3 0.000748949 1.056 AML other m 2021-09-19T09:51:55.67
IV.CPGN.HNN. ML:2.6 0.0002357981 1.0496 AML other m 2021-09-19T09:51:54.13
IV.CPGN.EHE. ML:1.4 1.36714785E-5 0.32 AML other m 2021-09-19T09:51:51.56
IV.CPGN.EHN. ML:1.5 1.77490925E-5 0.7808 AML other m 2021-09-19T09:51:59.63
IV.CPGN.HNE. ML:2.3 0.0001188354 0.928 AML other m 2021-09-19T09:52:02.89
IV.MMUR.HNN. ML:2.5 0.000137688755 0.4928 AML other m 2021-09-19T09:51:57.72
IV.MMUR.HNE. ML:2.5 0.000130722865 0.64 AML other m 2021-09-19T09:52:14.74
IV.OSSC.HHN. ML:0.8 1.487528E-5 0.8832 AML other m 2021-09-19T09:52:33.14
IV.OSSC.HHE. ML:1.3 4.5025845E-5 1.9008 AML other m 2021-09-19T09:52:32.13
IX.MNT3.HNN.01 ML:3.7 0.00029684135 0.768 AML other m 2021-09-19T09:52:56.76
IX.MNT3.EHE.02 ML:3.3 0.000113048 0.0448 AML other m 2021-09-19T09:52:01.59
IX.MNT3.EHN.02 ML:3.4 0.00012885765 0.0768 AML other m 2021-09-19T09:53:00.47
IX.MNT3.HNE.01 ML:3.6 0.0001954365 0.704 AML other m 2021-09-19T09:52:11.91
IV.MCRV.HHN. ML:2.3 9.63541E-6 0.5568 AML other m 2021-09-19T09:52:15.90
IV.MCRV.HHE. ML:2.3 9.263275E-6 1.1392 AML other m 2021-09-19T09:52:50.48
IV.VULT.HHE. ML:3.2 5.797484E-5 0.0576 AML other m 2021-09-19T09:52:40.86
IV.VULT.HHN. ML:3.1 5.3651665E-5 0.0576 AML other m 2021-09-19T09:52:40.87
IV.VULT.HNE. ML:3.4 0.00011710475 0.5184 AML other m 2021-09-19T09:52:51.29
IV.VULT.HNN. ML:3.6 0.00019169885 0.9792 AML other m 2021-09-19T09:53:32.72
CR.STON.BHE. ML:2.6 1.172268E-5 0.8 AML other m 2021-09-19T09:53:01.44
CR.STON.BHN. ML:2.6 1.05017495E-5 1.0432 AML other m 2021-09-19T09:53:43.22
OX.CIMO.HNN. ML:2.8 3.955782E-5 0.8768 AML other m 2021-09-19T09:52:55.67
OX.CIMO.HHE. ML:2.2 1.20965645E-5 0.0384 AML other m 2021-09-19T09:52:35.26
OX.CIMO.HHN. ML:1.9 6.7679965E-6 0.064 AML other m 2021-09-19T09:52:35.31
OX.CIMO.HNE. ML:2.6 3.0486125E-5 0.7616 AML other m 2021-09-19T09:52:44.07
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