Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 29-08-2019 and time 06:54:39 (UTC) in region 2 km E Montieri (GR)

A magnitude ML 1.7 earthquake occured in region: 2 km E Montieri (GR), on

  • 29-08-2019 06:54:39 (UTC)
  • 29-08-2019 08:54:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1280, 11.0460 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 2 1204 1204
Chiusdino SI 5 1903 3107
Monticiano SI 11 1571 4678
Castelnuovo di Val di Cecina PI 14 2231 6909
Radicondoli SI 15 914 7823
Massa Marittima GR 15 8375 16198
Monterotondo Marittimo GR 16 1371 17569
Roccastrada GR 16 9199 26768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km SW of Siena (53903 inhabitants)
41 Km N of Grosseto (82087 inhabitants)
71 Km S of Scandicci (50609 inhabitants)
73 Km S of Firenze (382808 inhabitants)
76 Km SE of Livorno (159219 inhabitants)
78 Km W of Arezzo (99543 inhabitants)
84 Km SE of Pisa (89158 inhabitants)
84 Km S of Prato (191150 inhabitants)
90 Km S of Pistoia (90315 inhabitants)
91 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 2019-08-29
06:54:39		 43.1277 11.0462 10 2019-11-13
14:31:06		 Bollettino Sismico Italiano INGV 73261211
Reviewed
Rev100 		ML 1.8 2019-08-29
06:54:39		 43.093 11.0672 3 2019-08-29
07:20:34		 Sala Sismica INGV-Roma 71901661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-29 06:54:39 ± 0.12
Latitude 43.1277 ± 0.0081
Longitude 11.0462 ± 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 73261211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 875
Semi-minor axis of confidence ellipse (meter) 694
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 341
Circular confidence region, given by single value of horizontal uncertainty (meter) 870.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 90
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.10522
Epicentral distance of station farthest from the epicenter (degree) 0.72036
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations 17
Type of magnitude ML
Reference to an origin 73261211
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-29 23:21:05

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 7
Type of magnitude ML
Reference to an origin 71901661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-29 07:20:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CELB.HHZ. 2019-08-29T06:55:03.66 0.6 undecidable manual S 238 79.9644 50 0.29 42
IV.CAFI.HHZ. 2019-08-29T06:55:02.06 0.6 undecidable manual S 73 77.6667 50 -0.7 37
IV.MCIV.CHE. 2019-08-29T06:54:58.53 0.6 undecidable manual S 127 64.1913 50 -0.63 39
TV.SF04.EHZ. 2019-08-29T06:54:57.09 0.6 undecidable manual S 123 59.496 50 -0.81 37
TV.SF14.HHN. 2019-08-29T06:54:57.53 0.6 undecidable manual S 132 61.9935 50 -1.04 33
TV.SF13.HHN. 2019-08-29T06:54:56.65 0.6 undecidable manual S 126 57.7977 50 -0.81 37
TV.SF01.EHZ. 2019-08-29T06:54:55.98 0.6 undecidable manual S 130 54.7008 50 -0.64 40
IV.ARCI.HHZ. 2019-08-29T06:54:54.01 0.3 undecidable manual S 131 46.3203 50 -0.39 66
IV.CELB.HHZ. 2019-08-29T06:54:54.27 0.6 undecidable manual P 238 79.9644 50 1.04 32
IV.CAFI.HHZ. 2019-08-29T06:54:53.60 0.6 positive manual P 73 77.6667 50 0.73 37
IV.CSNT.HHZ. 2019-08-29T06:54:53.38 0.6 undecidable manual S 27 43.1235 50 -0.15 46
IV.CASP.HHZ. 2019-08-29T06:54:52.39 0.3 undecidable manual S 202 40.1265 50 -0.35 67
IV.MCIV.CHE. 2019-08-29T06:54:51.34 0.1 undecidable manual P 127 64.1913 50 0.55 81
TV.SF04.EHZ. 2019-08-29T06:54:50.72 0.1 negative manual P 123 59.496 50 0.65 79
IV.MAGO.CHE. 2019-08-29T06:54:50.64 0.6 undecidable manual S 297 35.3424 50 -0.81 38
TV.SF14.HHN. 2019-08-29T06:54:50.78 0.1 undecidable manual P 132 61.9935 50 0.33 86
TV.SF13.HHN. 2019-08-29T06:54:50.34 0.1 undecidable manual P 126 57.7977 50 0.52 83
TV.SF01.EHZ. 2019-08-29T06:54:49.83 1.0 positive manual P 130 54.7008 50 0.5 21
IV.ARCI.HHZ. 2019-08-29T06:54:48.47 0.1 negative manual P 131 46.3203 50 0.42 87
IV.CSNT.HHZ. 2019-08-29T06:54:47.77 0.1 undecidable manual P 27 43.1235 50 0.22 91
IV.CASP.HHZ. 2019-08-29T06:54:47.29 0.1 positive manual P 202 40.1265 50 0.2 92
IV.MAGO.CHE. 2019-08-29T06:54:46.24 0.1 undecidable manual P 297 35.3424 50 -0.11 95
IV.TRIF.CHZ. 2019-08-29T06:54:44.18 0.1 undecidable manual S 263 11.6772 131 -0.57 88
IV.FROS.CHZ. 2019-08-29T06:54:44.69 0.1 undecidable manual S 44 12.7761 129 -0.34 94
IV.FROS.CHZ. 2019-08-29T06:54:42.83 0.1 negative manual P 44 12.7761 129 0.19 97
IV.TRIF.CHZ. 2019-08-29T06:54:42.53 0.1 negative manual P 263 11.6772 131 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHN. ML:2.6 0.0051225195 0.112 AML other m 2019-08-29T06:54:44.31
IV.FROS.CHN. ML:2.4 0.002471412 0.2336 AML other m 2019-08-29T06:54:44.97
IV.FROS.CHE. ML:2.2 0.0016011915 0.1344 AML other m 2019-08-29T06:54:45.07
IV.TRIF.CHE. ML:2.5 0.0033097345 0.1376 AML other m 2019-08-29T06:54:45.26
IV.CASP.HHN. ML:1.8 0.00020615784999999996 0.0992 AML other m 2019-08-29T06:54:52.69
IV.CASP.HHE. ML:1.7 0.00016946179999999998 0.1184 AML other m 2019-08-29T06:54:52.82
IV.ARCI.HHE. ML:1.6 0.00010468888500000001 0.1376 AML other m 2019-08-29T06:54:54.41
IV.ARCI.HNE. ML:1.8 0.0001593971 2.8288 AML other m 2019-08-29T06:54:54.42
IV.ARCI.HHN. ML:1.6 0.0001212674 0.2016 AML other m 2019-08-29T06:54:54.91
IV.ARCI.HNN. ML:1.7 0.0001372378 0.2304 AML other m 2019-08-29T06:54:54.91
TV.SF01.EHN. ML:1.3 0.000046181390000000004 0.16 AML other m 2019-08-29T06:54:57.37
TV.SF01.EHE. ML:1.3 0.00004896549 0.2624 AML other m 2019-08-29T06:54:59.17
IV.CELB.HHN. ML:1.7 0.00007276012 0.16 AML other m 2019-08-29T06:55:05.68
IV.CELB.HHE. ML:1.8 0.000095290415 0.2016 AML other m 2019-08-29T06:55:05.78
IV.CAFI.HHE. ML:1.0 0.000014458725 0.5408 AML other m 2019-08-29T06:55:05.84
IV.CAFI.HHN. ML:1.0 0.00001297741 0.6816 AML other m 2019-08-29T06:55:09.05
TV.SF04.EHN. ML:1.2 0.00003728777 5.6032 AML other m 2019-08-29T06:55:06.03
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