Earthquake with magnitude of ML 1.8 on date 08-07-2020 and time 16:51:20 (UTC) in region 8 km S Suvereto (LI)

A magnitude ML 1.8 earthquake occured in region: 8 km S Suvereto (LI), on

  • 08-07-2020 16:51:20 (UTC)
  • 08-07-2020 18:51:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.012, 10.688 at 6 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Suvereto LI 8 3072 3072
Campiglia Marittima LI 8 13218 16290
Follonica GR 12 21605 37895
Sassetta LI 14 514 38409
San Vincenzo LI 16 6911 45320
Piombino LI 16 34060 79380
Massa Marittima GR 17 8375 87755
Castagneto Carducci LI 18 9010 96765
Scarlino GR 18 3847 100612
Monteverdi Marittimo PI 19 758 101370

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NW of Grosseto (82087 inhabitants)
62 Km SW of Siena (53903 inhabitants)
68 Km SE of Livorno (159219 inhabitants)
82 Km S of Pisa (89158 inhabitants)
92 Km SW of Scandicci (50609 inhabitants)
94 Km S of Lucca (89046 inhabitants)
96 Km SW of Firenze (382808 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 1.8 2020-07-08
16:51:20
43.0125 10.6883 6 2020-11-19
12:36:54
Bollettino Sismico Italiano INGV 81415461
Reviewed
Rev100
ML 1.9 2020-07-08
16:51:20
43.0178 10.6822 5 2020-07-08
17:02:52
Sala Sismica INGV-Roma 80885571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-08 16:51:20 ± 0.14
Latitude 43.0125 ± 0.0063
Longitude 10.6883 ± 0.0086
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 81415461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 631
Semi-minor axis of confidence ellipse (meter) 599
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 125
Circular confidence region, given by single value of horizontal uncertainty (meter) 630
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
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) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.18706
Epicentral distance of station farthest from the epicenter (degree) 1.38226
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:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 81415461
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-28 07:28:13

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 80885571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-08 17:02:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
FR.SMPL.HHE.00 2020-07-08T16:51:46.25 0.3 undecidable manual P 229 1.3823 50 -0.4 53
RD.PGF.BHZ. 2020-07-08T16:51:45.60 1.0 undecidable manual P 250 1.3229 50 -0.04 20
Z3.A317A.HHE. 2020-07-08T16:51:43.35 0.6 undecidable manual S 274 0.6187 50 0.47 42
IV.CRMI.HHE. 2020-07-08T16:51:37.08 0.6 undecidable manual P 15 0.8103 50 0.2 43
IV.FROS.CHZ. 2020-07-08T16:51:35.60 0.3 undecidable manual S 60 0.3939 50 -0.61 63
IV.PII.HHZ. 2020-07-08T16:51:35.01 0.3 undecidable manual P 351 0.7186 50 -0.3 64
TV.SF01.EHZ. 2020-07-08T16:51:35.11 0.3 undecidable manual P 107 0.6709 50 0.62 59
IV.CSNT.HHZ. 2020-07-08T16:51:34.11 0.6 undecidable manual P 43 0.6358 50 0.23 44
IV.MAON.HHZ. 2020-07-08T16:51:34.76 0.3 undecidable manual P 151 0.6682 50 0.32 64
Z3.A317A.HHE. 2020-07-08T16:51:33.74 0.3 undecidable manual P 274 0.6187 50 0.14 68
IV.RIBO.EHZ.01 2020-07-08T16:51:31.57 0.3 undecidable manual S 104 0.2698 101 0.07 74
IV.CASP.HHZ. 2020-07-08T16:51:30.74 0.6 undecidable manual S 150 0.2563 102 -0.28 47
IV.CELB.HHZ. 2020-07-08T16:51:30.20 0.3 undecidable manual P 233 0.4398 50 -0.33 67
IV.FROS.CHZ. 2020-07-08T16:51:29.86 0.3 undecidable manual P 60 0.3939 50 0.11 71
IV.TRIF.CHZ. 2020-07-08T16:51:28.48 0.6 undecidable manual S 57 0.1871 106 0.08 50
IV.RIBO.EHZ.01 2020-07-08T16:51:27.13 0.1 undecidable manual P 104 0.2698 101 0.1 98
IV.CASP.HHZ. 2020-07-08T16:51:26.62 0.3 undecidable manual P 150 0.2563 102 -0.13 73
IV.TRIF.CHZ. 2020-07-08T16:51:25.19 0.1 positive manual P 57 0.1871 106 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHN. ML:1.8 0.00050362285 0.2816 AML other m 2020-07-08T16:51:29.95
IV.TRIF.CHE. ML:1.8 0.0005657623 0.1792 AML other m 2020-07-08T16:51:30.35
IV.CASP.HHE. ML:1.7 0.0002598206 0.2432 AML other m 2020-07-08T16:51:31.01
IV.CASP.HHN. ML:1.5 0.00016612805 0.1792 AML other m 2020-07-08T16:51:32.00
IV.RIBO.EHE.01 ML:1.9 0.000418015 0.128 AML other m 2020-07-08T16:51:32.24
IV.CELB.HHE. ML:2.1 0.0003133406 0.064 AML other m 2020-07-08T16:51:39.17
IV.CELB.HHN. ML:1.8 0.00019618375 0.0896 AML other m 2020-07-08T16:51:39.37
IV.PII.HHE. ML:1.8 7.9956155E-5 0.3072 AML other m 2020-07-08T16:51:45.25
IV.MAON.HNN. ML:2.1 0.00019683315 0.1536 AML other m 2020-07-08T16:51:45.72
IV.MAON.HHN. ML:2.1 0.0001997452 0.1664 AML other m 2020-07-08T16:51:45.72
IV.MAON.HHE. ML:2 0.0001404746 0.2048 AML other m 2020-07-08T16:51:45.00
IV.PII.HHN. ML:1.7 6.5451675E-5 0.32 AML other m 2020-07-08T16:51:46.11
TV.SF01.EHN. ML:1.5 4.9416335E-5 0.2432 AML other m 2020-07-08T16:51:46.44
TV.SF01.EHE. ML:1.4 3.7895975E-5 0.2176 AML other m 2020-07-08T16:51:45.62
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