Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 19-08-2019 and time 05:34:16 (UTC) in region 2 km SW Monteverdi Marittimo (PI)

A magnitude ML 1.6 earthquake occured in region: 2 km SW Monteverdi Marittimo (PI), on

  • 19-08-2019 05:34:16 (UTC)
  • 19-08-2019 07:34:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1660, 10.7020 at 9 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
Monteverdi Marittimo PI 2 758 758
Sassetta LI 6 514 1272
Castagneto Carducci LI 7 9010 10282
Suvereto LI 10 3072 13354
Monterotondo Marittimo GR 13 1371 14725
Campiglia Marittima LI 14 13218 27943
Bibbona LI 14 3175 31118
San Vincenzo LI 15 6911 38029
Casale Marittimo PI 16 1122 39151
Castelnuovo di Val di Cecina PI 17 2231 41382
Guardistallo PI 17 1234 42616
Montescudaio PI 19 2144 44760
Massa Marittima GR 20 8375 53135

Municipalities with at least 50000 inhabitants

An earthquake occurred to
54 Km SE of Livorno (159219 inhabitants)
54 Km W of Siena (53903 inhabitants)
56 Km NW of Grosseto (82087 inhabitants)
66 Km SE of Pisa (89158 inhabitants)
77 Km SW of Scandicci (50609 inhabitants)
77 Km S of Lucca (89046 inhabitants)
81 Km SW of Firenze (382808 inhabitants)
86 Km SW of Prato (191150 inhabitants)
86 Km SE of Viareggio (62467 inhabitants)
87 Km S of Pistoia (90315 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 1.6 2019-08-19
05:34:16		 43.1655 10.7023 9 2019-11-13
14:31:01		 Bollettino Sismico Italiano INGV 72104471
Reviewed
Rev100 		ML 1.7 2019-08-19
05:34:16		 43.1607 10.6975 9 2019-08-19
05:40:14		 Sala Sismica INGV-Roma 71617381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-19 05:34:16 ± 0.19
Latitude 43.1655 ± 0.0117
Longitude 10.7023 ± 0.0185
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 72104471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1654
Semi-minor axis of confidence ellipse (meter) 777
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 48
Circular confidence region, given by single value of horizontal uncertainty (meter) 1650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.53
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.64571
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.4
Num. used stations 13
Type of magnitude ML
Reference to an origin 72104471
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-04 09:42:14

ML:1.7

Field Value
Value 1.7
Uncertainty 0.5
Num. used stations 25
Type of magnitude ML
Reference to an origin 71617381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-19 05:40:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ACATE.EHZ. 2019-08-19T05:36:11.82 3.0 undecidable manual Pg 15.34 0
IT.ORP.HGZ. 2019-08-19T05:36:01.45 3.0 undecidable manual Sn -2.48 0
IV.PLLN.EHZ. 2019-08-19T05:35:41.49 3.0 positive manual Pn -1.32 0
IV.ZONE.HHZ. 2019-08-19T05:35:39.94 3.0 undecidable manual Sg 8.4 0
IV.MCRV.HHZ. 2019-08-19T05:35:30.07 3.0 undecidable manual Pg 10.2 0
IV.CAPR.HNZ. 2019-08-19T05:35:29.22 3.0 undecidable manual Sn 0.21 0
IV.MMO1.EHZ. 2019-08-19T05:35:20.13 3.0 undecidable manual Sn 3.28 0
IV.CGL.BHZ. 2019-08-19T05:35:14.86 3.0 undecidable manual Pn -1.72 0
SI.BOSI.HHZ. 2019-08-19T05:35:06.50 3.0 positive manual Pn -2.54 0
IV.FDMO.HHZ. 2019-08-19T05:34:49.37 3.0 positive manual Pn 1.47 0
IV.SFI.EHZ. 2019-08-19T05:34:38.67 3.0 undecidable manual P -0.23 0
IV.CELB.HHZ. 2019-08-19T05:34:35.00 0.6 undecidable manual S 221 61.2942 50 -0.96 35
IV.PII.HHZ. 2019-08-19T05:34:35.65 0.3 undecidable manual S 347 63.3921 50 -0.87 55
IV.ARCI.HHZ. 2019-08-19T05:34:30.79 0.1 undecidable manual P 119 71.6727 50 1.39 55
Z3.A317A.HHE. 2019-08-19T05:34:30.14 0.3 undecidable manual P 260 70.7736 50 0.88 53
IV.CASP.HHZ. 2019-08-19T05:34:30.53 0.3 undecidable manual S 162 43.623 50 -0.72 60
IV.RIBO.EHZ.01 2019-08-19T05:34:29.00 0.3 undecidable manual S 131 36.8298 50 -0.43 68
IV.CELB.HHZ. 2019-08-19T05:34:28.02 0.1 undecidable manual P 221 61.2942 50 0.23 90
IV.PII.HHZ. 2019-08-19T05:34:28.29 0.1 undecidable manual P 347 63.3921 50 0.18 91
IV.CSNT.HHZ. 2019-08-19T05:34:27.68 0.3 undecidable manual P 54 58.3971 50 0.33 66
IV.RIBO.EHZ.01 2019-08-19T05:34:24.28 0.1 undecidable manual P 131 36.8298 50 0.26 93
IV.CASP.HHZ. 2019-08-19T05:34:24.90 0.1 undecidable manual P 162 43.623 50 -0.17 94
IV.TRIF.CHZ. 2019-08-19T05:34:22.94 0.1 undecidable manual S 109 17.1717 117 -0.36 95
IV.MAGO.CHZ. 2019-08-19T05:34:21.52 0.1 undecidable manual S 343 12.4764 125 -0.38 95
IV.TRIF.CHZ. 2019-08-19T05:34:20.66 0.1 undecidable manual P 109 17.1717 117 0.18 98
IV.MAGO.CHZ. 2019-08-19T05:34:19.81 0.1 positive manual P 343 12.4764 125 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CASP.HHN. ML:1.4 0.000073504675 0.3616 AML other m 2019-08-19T05:34:31.11
IV.MAGO.CHN. ML:2.1 0.001781183 0.1664 AML other m 2019-08-19T05:34:21.73
IV.TRIF.CHN. ML:1.4 0.00023950000000000002 0.5 AML other m 2019-08-19T05:34:23.28
IV.TRIF.CHE. ML:1.3 0.000169541 0.1056 AML other m 2019-08-19T05:34:23.28
IV.CASP.HHE. ML:1.2 0.00007003053 0.2016 AML other m 2019-08-19T05:34:34.28
IV.ARCI.HNE. ML:2.0 0.00014459695 0.9408 AML other m 2019-08-19T05:34:35.59
IV.CELB.HHE. ML:1.8 0.0001349403 0.0608 AML other m 2019-08-19T05:34:36.51
IV.CELB.HHN. ML:1.6 0.000086562815 0.1408 AML other m 2019-08-19T05:34:39.37
IV.ARCI.HHN. ML:1.2 0.000025161975000000002 0.2208 AML other m 2019-08-19T05:34:42.50
IV.ARCI.HHE. ML:1.1 0.000022433355 0.2592 AML other m 2019-08-19T05:34:42.66
IV.ARCI.HNN. ML:1.9 0.00013875499 1.0208 AML other m 2019-08-19T05:34:59.56
IV.RIBO.EHE.01 ML:1.5 0.0001253368 0.1408 AML other m 2019-08-19T05:34:29.43
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