Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 23-07-2019 and time 00:29:31 (Italy) in region 1 km NE Montieri (GR)

A magnitude ML 1.5 earthquake occured in region: 1 km NE Montieri (GR), on

  • 22-07-2019 22:29:31 (UTC)
  • 23-07-2019 00:29:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1370, 11.0200 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 1 1204 1204
Chiusdino SI 6 1903 3107
Castelnuovo di Val di Cecina PI 12 2231 5338
Monticiano SI 13 1571 6909
Monterotondo Marittimo GR 13 1371 8280
Radicondoli SI 14 914 9194
Massa Marittima GR 14 8375 17569
Roccastrada GR 18 9199 26768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 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)
74 Km SE of Livorno (159219 inhabitants)
79 Km W of Arezzo (99543 inhabitants)
82 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 1.5 2019-07-22
22:29:31		 43.1372 11.0205 10 2019-11-13
14:31:00		 Bollettino Sismico Italiano INGV 71927481
Reviewed
Rev100 		ML 1.6 2019-07-22
22:29:31		 43.14 11.0233 10 2019-07-22
22:36:20		 Sala Sismica INGV-Roma 70804701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-22 22:29:31 ± 0.11
Latitude 43.1372 ± 0.0054
Longitude 11.0205 ± 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 71927481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 708
Semi-minor axis of confidence ellipse (meter) 506
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 286
Circular confidence region, given by single value of horizontal uncertainty (meter) 710.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.71316
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 19
Type of magnitude ML
Reference to an origin 71927481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-30 06:13:24

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 21
Type of magnitude ML
Reference to an origin 70804701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-22 22:36:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.QLNO.HHZ. 2019-07-22T22:30:44.22 3.0 undecidable manual Sg 5.77 0
IV.PTRJ.HNZ. 2019-07-22T22:30:27.81 3.0 undecidable manual Pg 6.64 0
IV.DGI.HHZ. 2019-07-22T22:30:20.63 3.0 undecidable manual Pn 1.3 0
IV.VIVA.HHZ. 2019-07-22T22:30:06.00 3.0 undecidable manual Pn 2.03 0
IV.MAIM.HHZ. 2019-07-22T22:29:59.17 3.0 undecidable manual P 0
TV.SF01.EHZ. 2019-07-22T22:29:49.80 0.6 undecidable manual S 129 56.8986 50 0.17 46
IV.CRE.HHZ. 2019-07-22T22:29:48.35 3.0 undecidable manual P 0
IV.MAON.HHZ. 2019-07-22T22:29:46.52 0.3 undecidable manual P 173 79.1652 50 1.06 49
IV.ARCI.HHZ. 2019-07-22T22:29:46.50 0.3 undecidable manual S 130 48.618 50 -0.91 55
IV.OSSC.HHZ. 2019-07-22T22:29:46.60 0.6 undecidable manual S 23 46.5201 50 -0.25 46
IV.CSNT.HHZ. 2019-07-22T22:29:45.60 0.3 undecidable manual S 30 43.1235 50 -0.35 68
IV.CASP.HHZ. 2019-07-22T22:29:44.70 0.1 undecidable manual S 198 40.4262 50 -0.52 88
IV.CRMI.HNN. 2019-07-22T22:29:44.80 0.6 undecidable manual P 357 73.0713 50 0.26 44
TV.SF04.EHZ. 2019-07-22T22:29:43.20 0.1 undecidable manual P 123 61.7937 50 0.42 87
IV.MAGO.CHZ. 2019-07-22T22:29:42.73 0.1 undecidable manual S 297 32.9448 50 -0.5 90
TV.SF01.EHZ. 2019-07-22T22:29:42.32 0.6 undecidable manual P 129 56.8986 50 0.28 45
IV.OSSC.HHZ. 2019-07-22T22:29:40.85 0.3 undecidable manual P 23 46.5201 50 0.41 67
IV.CSNT.HHZ. 2019-07-22T22:29:40.18 0.1 undecidable manual P 30 43.1235 50 0.26 93
IV.ARCI.HHZ. 2019-07-22T22:29:40.90 0.3 undecidable manual P 130 48.618 50 0.14 71
IV.CASP.HHZ. 2019-07-22T22:29:39.72 0.3 undecidable manual P 198 40.4262 50 0.22 70
IV.RIBO.EHZ.01 2019-07-22T22:29:39.30 0.3 undecidable manual S 174 20.9679 115 -0.41 70
IV.MAGO.CHZ. 2019-07-22T22:29:38.54 0.1 undecidable manual P 297 32.9448 50 0.19 96
IV.TRIF.CHZ. 2019-07-22T22:29:36.30 0.1 undecidable manual S 255 9.879 135 -0.2 100
IV.FROS.CHZ. 2019-07-22T22:29:36.97 0.1 undecidable manual S 54 13.5753 126 -0.52 92
IV.RIBO.EHZ.01 2019-07-22T22:29:36.45 0.1 undecidable manual P 174 20.9679 115 0.14 99
IV.FROS.CHZ. 2019-07-22T22:29:35.18 0.1 undecidable manual P 54 13.5753 126 0.14 100
IV.TRIF.CHZ. 2019-07-22T22:29:34.82 0.1 undecidable manual P 255 9.879 135 0.36 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHN. ML:2.2 0.0018898464999999999 0.1024 AML other m 2019-07-22T22:29:36.45
IV.FROS.CHN. ML:2.3 0.0019050215 0.1792 AML other m 2019-07-22T22:29:37.33
IV.TRIF.CHE. ML:2.0 0.0012261695000000002 0.1792 AML other m 2019-07-22T22:29:37.49
IV.FROS.CHE. ML:1.9 0.00083074955 0.0896 AML other m 2019-07-22T22:29:37.88
IV.MAGO.CHN. ML:1.2 0.000071655985 0.128 AML other m 2019-07-22T22:29:43.39
IV.CASP.HHN. ML:1.9 0.00029638715 0.0896 AML other m 2019-07-22T22:29:44.86
IV.CASP.HHE. ML:1.9 0.00024987189999999996 0.1664 AML other m 2019-07-22T22:29:45.16
IV.CSNT.HHN. ML:1.5 0.00009748812500000001 0.1536 AML other m 2019-07-22T22:29:45.77
IV.CSNT.HHE. ML:1.4 0.00007966374 0.1408 AML other m 2019-07-22T22:29:45.81
IV.OSSC.HHE. ML:1.2 0.000042232165 0.2048 AML other m 2019-07-22T22:29:47.39
IV.ARCI.HHN. ML:1.4 0.000064772575 0.1408 AML other m 2019-07-22T22:29:47.54
IV.ARCI.HHE. ML:1.2 0.000040878125 0.1024 AML other m 2019-07-22T22:29:48.03
IV.OSSC.HHN. ML:0.9 0.00002645177 0.2048 AML other m 2019-07-22T22:29:48.35
TV.SF01.EHN. ML:1.6 0.00008611381 0.1792 AML other m 2019-07-22T22:29:50.41
TV.SF01.EHE. ML:1.7 0.00011575009999999999 0.3584 AML other m 2019-07-22T22:29:50.41
IV.MAON.HHE. ML:1.6 0.000050990939999999996 0.2048 AML other m 2019-07-22T22:29:56.70
IV.RIBO.EHE.01 ML:1.7 0.00032717969999999995 0.1024 AML other m 2019-07-22T22:29:39.74
IV.MAGO.CHE. ML:1.1 0.00005400855 0.064 AML other m 2019-07-22T22:29:42.99
IV.CRE.HHN. ML:1.0 0.000009291673 0.3584 AML other m 2019-07-22T22:30:04.70
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