Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 02-01-2022 and time 06:36:04 (UTC) in region 1 km N Montieri (GR)

A magnitude ML 1.7 earthquake occured in region: 1 km N Montieri (GR), on

  • 02-01-2022 06:36:04 (UTC)
  • 02-01-2022 07:36:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1400, 11.0150 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 1 1204 1204
Chiusdino SI 6 1903 3107
Castelnuovo di Val di Cecina PI 12 2231 5338
Monterotondo Marittimo GR 13 1371 6709
Monticiano SI 13 1571 8280
Radicondoli SI 14 914 9194
Massa Marittima GR 14 8375 17569
Roccastrada GR 19 9199 26768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km SW of Siena (53903 inhabitants)
43 Km N of Grosseto (82087 inhabitants)
70 Km S of Scandicci (50609 inhabitants)
73 Km S of Firenze (382808 inhabitants)
73 Km SE of Livorno (159219 inhabitants)
79 Km W of Arezzo (99543 inhabitants)
81 Km SE of Pisa (89158 inhabitants)
83 Km S of Prato (191150 inhabitants)
89 Km S of Pistoia (90315 inhabitants)
89 Km SE of Lucca (89046 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 1.7 2022-01-02
06:36:04		 43.1395 11.015 10 2022-07-08
12:33:23		 Bollettino Sismico Italiano INGV 99910381
Reviewed
Rev100 		ML 1.6 2022-01-02
06:36:04		 43.1342 11.0278 10 2022-01-02
06:41:50		 Sala Sismica INGV-Roma 99238781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-02 06:36:04 ± 0.11
Latitude 43.1395 ± 0.0063
Longitude 11.0150 ± 0.0099
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 99910381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 831
Semi-minor axis of confidence ellipse (meter) 295
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 123
Circular confidence region, given by single value of horizontal uncertainty (meter) 830.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
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) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.08544
Epicentral distance of station farthest from the epicenter (degree) 0.70777
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 15
Type of magnitude ML
Reference to an origin 99910381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-04-15 12:05:57

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 99238781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-02 06:41:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CELB.HHZ. 2022-01-02T06:36:28.86 0.6 undecidable manual S 237 78.5658 50 0.24 43
IV.ARCI.HHZ. 2022-01-02T06:36:20.17 0.6 undecidable manual S 130 49.1175 50 -0.6 41
IV.OSSC.HHZ. 2022-01-02T06:36:19.68 0.6 undecidable manual S 24 46.5201 50 -0.39 44
IV.CELB.HHZ. 2022-01-02T06:36:19.28 0.1 undecidable manual P 237 78.5658 50 0.65 77
IV.CSNT.HHZ. 2022-01-02T06:36:18.91 0.6 undecidable manual S 31 43.1235 50 -0.27 46
IV.CASP.HHZ. 2022-01-02T06:36:17.90 0.3 undecidable manual S 198 40.5261 50 -0.58 63
IV.MAGO.CHE. 2022-01-02T06:36:15.33 0.6 undecidable manual S 297 32.4453 50 -0.99 36
IV.ARCI.HHZ. 2022-01-02T06:36:14.40 0.1 undecidable manual P 130 49.1175 50 0.31 90
IV.OSSC.HHZ. 2022-01-02T06:36:13.92 0.1 undecidable manual P 24 46.5201 50 0.23 92
IV.CSNT.HHZ. 2022-01-02T06:36:13.40 0.1 undecidable manual P 31 43.1235 50 0.22 92
IV.CASP.HHZ. 2022-01-02T06:36:12.95 0.1 undecidable manual P 198 40.5261 50 0.18 94
IV.RIBO.EHZ.01 2022-01-02T06:36:12.80 0.6 undecidable manual S 173 21.2676 115 -0.34 47
IV.MAGO.CHE. 2022-01-02T06:36:11.56 0.1 undecidable manual P 297 32.4453 50 0.03 98
IV.FROS.CHZ. 2022-01-02T06:36:10.48 0.6 undecidable manual S 56 13.7751 126 -0.42 47
IV.RIBO.EHZ.01 2022-01-02T06:36:09.78 0.1 undecidable manual P 173 21.2676 115 0.09 98
IV.TRIF.CHZ. 2022-01-02T06:36:09.26 0.6 undecidable manual S 253 9.4794 137 -0.51 46
IV.FROS.CHZ. 2022-01-02T06:36:08.55 0.1 positive manual P 56 13.7751 126 0.15 98
IV.TRIF.CHZ. 2022-01-02T06:36:07.86 0.1 negative manual P 253 9.4794 137 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHN. ML:2.3 0.0028650000000000004 0.1 AML other m 2022-01-02T06:36:09.64
IV.TRIF.CHE. ML:2.2 0.0020383985 0.112 AML other m 2022-01-02T06:36:09.85
IV.FROS.CHE. ML:1.6 0.00045372575 0.144 AML other m 2022-01-02T06:36:10.90
IV.FROS.CHN. ML:2.0 0.0009535 0.16 AML other m 2022-01-02T06:36:10.84
IV.RIBO.EHE.01 ML:1.9 0.000559 0.16 AML other m 2022-01-02T06:36:12.94
IV.RIBO.EHN.01 ML:1.9 0.0005669999999999999 0.1 AML other m 2022-01-02T06:36:13.06
IV.CASP.HNN. ML:1.7 0.00017665153 0.1408 AML other m 2022-01-02T06:36:18.26
IV.CASP.HHN. ML:1.7 0.00018163829999999996 0.0992 AML other m 2022-01-02T06:36:18.43
IV.CASP.HNE. ML:1.6 0.00015028455 0.1504 AML other m 2022-01-02T06:36:18.41
IV.CASP.HHE. ML:1.6 0.0001295 0.16 AML other m 2022-01-02T06:36:18.45
IV.CSNT.HHN. ML:1.2 0.000049970645 0.1408 AML other m 2022-01-02T06:36:19.20
IV.CSNT.HHE. ML:1.1 0.000037913579999999994 0.1216 AML other m 2022-01-02T06:36:19.54
IV.ARCI.HHN. ML:1.0 0.00002763997 0.1408 AML other m 2022-01-02T06:36:21.18
IV.CELB.HHE. ML:1.8 0.0000923 1.94 AML other m 2022-01-02T06:36:48.01
IV.CELB.HHN. ML:1.7 0.00006335000000000001 0.06 AML other m 2022-01-02T06:36:48.09
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