Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 07-08-2022 and time 13:55:39 (Italy) in region 5 km N Montieri (GR)

A magnitude ML 0.9 earthquake occured in region: 5 km N Montieri (GR), on

  • 07-08-2022 11:55:39 (UTC)
  • 07-08-2022 13:55:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1800, 11.0240 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.

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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 6 1903 3107
Radicondoli SI 9 914 4021
Castelnuovo di Val di Cecina PI 10 2231 6252
Monticiano SI 14 1571 7823
Monterotondo Marittimo GR 14 1371 9194
Casole d'Elsa SI 18 3897 13091
Pomarance PI 18 5897 18988
Massa Marittima GR 18 8375 27363

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SW of Siena (53903 inhabitants)
47 Km N of Grosseto (82087 inhabitants)
66 Km S of Scandicci (50609 inhabitants)
68 Km S of Firenze (382808 inhabitants)
71 Km SE of Livorno (159219 inhabitants)
77 Km W of Arezzo (99543 inhabitants)
78 Km SE of Pisa (89158 inhabitants)
78 Km S of Prato (191150 inhabitants)
84 Km S of Pistoia (90315 inhabitants)
85 Km SE of Lucca (89046 inhabitants)
99 Km SE of Viareggio (62467 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 0.9 2022-08-07
11:55:39		 43.1805 11.0242 10 2023-01-31
19:03:48		 Bollettino Sismico Italiano INGV 110132241
Reviewed
Rev100 		ML 1.5 2022-08-07
11:55:39		 43.1765 11.0072 7 2022-08-07
12:17:52		 Sala Sismica INGV-Roma 108232131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-08-07 11:55:39 ± 0.2
Latitude 43.1805 ± 0.0099
Longitude 11.0242 ± 0.0185
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 110132241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1364
Semi-minor axis of confidence ellipse (meter) 1050
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 90
Circular confidence region, given by single value of horizontal uncertainty (meter) 1360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 104
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.40649
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 110132241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-09-25 08:41:28

ML:1.5

Field Value
Value 1.5
Uncertainty 0.5
Num. used stations 16
Type of magnitude ML
Reference to an origin 108232131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-08-07 12:17:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IX.NSC3.EHZ.02 2022-08-07T11:57:10.00 3.0 undecidable manual Sn -0.39 0
IV.CORL.HHZ. 2022-08-07T11:57:08.48 3.0 undecidable manual Pg 14.55 0
GU.GBOS.HHZ. 2022-08-07T11:57:01.58 3.0 undecidable manual Sg 13.82 0
OX.CIMO.HHZ. 2022-08-07T11:57:01.09 3.0 undecidable manual Sg 5.57 0
IV.CLTA.HHZ. 2022-08-07T11:56:59.70 3.0 undecidable manual Pn -5.87 0
NI.VINO.HHZ. 2022-08-07T11:56:55.85 3.0 undecidable manual Sn -3 0
IV.MAGA.HHZ. 2022-08-07T11:56:52.76 3.0 undecidable manual Sg 10.75 0
IV.PTRJ.HHZ. 2022-08-07T11:56:52.87 3.0 undecidable manual Sn -0.96 0
IV.MMN.HHZ. 2022-08-07T11:56:51.69 3.0 undecidable manual Pg 8.21 0
IV.LPEL.HHZ. 2022-08-07T11:56:39.73 3.0 undecidable manual Sn 0.97 0
GU.RRL.HHZ. 2022-08-07T11:56:37.30 3.0 undecidable manual Pg 9.27 0
IV.MCRV.HHZ. 2022-08-07T11:56:29.92 3.0 undecidable manual Pn 1.18 0
IV.PTCC.HHZ. 2022-08-07T11:56:26.55 3.0 positive manual Pg 3.02 0
IV.TERO.HHZ. 2022-08-07T11:56:25.51 3.0 undecidable manual Sg 2.58 0
IV.LPEL.HHZ. 2022-08-07T11:56:11.37 3.0 positive manual Pg 1.35 0
IV.IMOL.HNZ. 2022-08-07T11:56:07.35 3.0 undecidable manual Sg 0.37 0
IV.FAGN.HHZ. 2022-08-07T11:56:01.29 3.0 negative manual Pn -2.03 0
IV.NRCA.HHZ. 2022-08-07T11:55:57.65 3.0 undecidable manual Pg 2.1 0
IV.ARRO.EHZ. 2022-08-07T11:55:54.68 3.0 positive manual Pg 0.45 0
IV.CASP.HHZ. 2022-08-07T11:55:54.00 0.6 undecidable manual S 197 45.1215 50 -0.36 45
IV.CSNT.HHZ. 2022-08-07T11:55:52.40 0.6 undecidable manual S 33 38.9277 50 -0.3 46
IV.MAGO.CHZ. 2022-08-07T11:55:50.07 0.6 undecidable manual S 289 31.3464 50 -0.61 43
IV.SSFR.HHZ. 2022-08-07T11:55:48.27 3.0 negative manual P -2.9 0
IV.RIBO.EHZ. 2022-08-07T11:55:48.66 0.6 undecidable manual S 176 25.752 50 -0.53 45
IV.CASP.HHZ. 2022-08-07T11:55:48.75 0.3 undecidable manual P 197 45.1215 50 0.62 62
IV.CSNT.HHZ. 2022-08-07T11:55:47.63 0.3 undecidable manual P 33 38.9277 50 0.45 67
IV.MALA2.EHN. 2022-08-07T11:55:47.93 1.0 undecidable manual P 118 41.7249 50 0.32 23
IV.MAGO.CHZ. 2022-08-07T11:55:46.17 0.3 undecidable manual P 289 31.3464 50 0.16 72
IV.RIBO.EHZ. 2022-08-07T11:55:45.28 0.3 undecidable manual P 176 25.752 50 0.13 73
IV.FROS.CHZ. 2022-08-07T11:55:44.43 0.3 undecidable manual S 73 11.1777 132 -0.43 70
IV.FROS.CHZ. 2022-08-07T11:55:42.78 0.1 negative manual P 73 11.1777 132 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FROS.CHE. ML:0.8 0.000075260935 0.1536 AML other m 2022-08-07T11:55:44.92
IV.FROS.CHN. ML:1.0 0.00010681488999999999 0.1344 AML other m 2022-08-07T11:55:44.99
IV.RIBO.EHE.01 ML:0.8 0.00003315115 0.1408 AML other m 2022-08-07T11:55:48.81
IV.RIBO.EHN.01 ML:0.9 0.0000449576 0.096 AML other m 2022-08-07T11:55:48.88
IV.MAGO.CHN. ML:0.6 0.0000224724 0.16 AML other m 2022-08-07T11:55:50.15
IV.MAGO.CHE. ML:0.6 0.00002150979 0.3584 AML other m 2022-08-07T11:55:50.48
IV.CASP.HHN. ML:0.8 0.00002032163 0.1024 AML other m 2022-08-07T11:55:54.46
IV.CASP.HNE. ML:1.6 0.000123156135 0.896 AML other m 2022-08-07T11:55:58.08
IV.CASP.HNN. ML:1.7 0.0001564977 0.8704 AML other m 2022-08-07T11:56:02.21
IV.CASP.HHE. ML:0.7 0.000014578500000000001 1.1424 AML other m 2022-08-07T11:56:20.31
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