Earthquake with magnitude of ML 1.9 on date 08-07-2020 and time 16:51:20 (UTC) in region 7 km S Suvereto (LI)

A magnitude ML 1.9 earthquake occured in region: 7 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) 43.02, 10.68 at 5 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 7 3072 3072
Campiglia Marittima LI 7 13218 16290
Follonica GR 12 21605 37895
Sassetta LI 13 514 38409
San Vincenzo LI 15 6911 45320
Piombino LI 16 34060 79380
Castagneto Carducci LI 17 9010 88390
Massa Marittima GR 17 8375 96765
Monteverdi Marittimo PI 18 758 97523
Scarlino GR 19 3847 101370

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NW of Grosseto (82087 inhabitants)
63 Km SW of Siena (53903 inhabitants)
67 Km SE of Livorno (159219 inhabitants)
81 Km S of Pisa (89158 inhabitants)
92 Km SW of Scandicci (50609 inhabitants)
93 Km S of Lucca (89046 inhabitants)
96 Km SW of Firenze (382808 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.9 2020-07-08
16:51:20
43.02 10.68 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 ± 0.16
Latitude 43.02 ± 0.01
Longitude 10.68 ± 0.01
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 80885571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 883
Semi-minor axis of confidence ellipse (meter) 744
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 345
Circular confidence region, given by single value of horizontal uncertainty (meter) 880
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 20
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.38226
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 12
Magnitude information

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 2020-07-08T16:51:46.09 0.6 undecidable manual P 229 1.3823 50 -0.64 44
RD.PGF.BHZ. 2020-07-08T16:51:44.60 0.6 undecidable manual P 250 1.3202 50 -1.08 38
Z3.A317A.HHE. 2020-07-08T16:51:43.35 0.6 undecidable manual S 273 0.6142 50 0.43 56
IV.CELB.HHZ. 2020-07-08T16:51:38.66 0.3 undecidable manual S 232 0.4389 50 0.93 72
IV.CRMI.HHE. 2020-07-08T16:51:37.08 0.6 undecidable manual P 15 0.8067 50 0.19 58
TV.SF04.EHZ. 2020-07-08T16:51:36.31 3.0 negative manual P 0.33 0
TV.SF01.EHZ. 2020-07-08T16:51:35.20 0.3 undecidable manual P 107 0.6772 50 0.53 83
IV.CSNT.HHZ. 2020-07-08T16:51:35.31 3.0 undecidable manual P 0
IV.FROS.CHZ. 2020-07-08T16:51:35.60 0.3 undecidable manual S 61 0.3957 96 -0.58 83
IV.MAON.HHZ. 2020-07-08T16:51:34.76 0.3 undecidable manual P 151 0.6754 50 0.12 90
IV.PII.HHZ. 2020-07-08T16:51:34.86 0.3 undecidable manual P 351 0.7132 50 -0.43 83
Z3.A317A.HHE. 2020-07-08T16:51:33.74 0.6 undecidable manual P 273 0.6142 50 0.14 60
IV.RIBO.EHZ.01 2020-07-08T16:51:31.70 0.6 undecidable manual S 104 0.2752 99 0.12 65
IV.CASP.HHZ. 2020-07-08T16:51:30.74 0.6 undecidable manual S 149 0.2635 99 -0.4 61
IV.CELB.HHZ. 2020-07-08T16:51:30.17 0.3 undecidable manual P 232 0.4389 50 -0.43 89
IV.FROS.CHZ. 2020-07-08T16:51:29.86 0.3 undecidable manual P 61 0.3957 96 0.16 94
IV.TRIF.CHZ. 2020-07-08T16:51:28.97 0.6 undecidable manual S 59 0.188 103 0.69 57
IV.RIBO.EHZ.01 2020-07-08T16:51:27.11 0.3 undecidable manual P 104 0.2752 99 0.06 98
IV.CASP.HHZ. 2020-07-08T16:51:26.62 0.6 undecidable manual P 149 0.2635 99 -0.17 64
IV.TRIF.CHZ. 2020-07-08T16:51:25.19 0.3 undecidable manual P 59 0.188 103 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHE. ML:2 0.0007635 0.62 AML other m 2020-07-08T16:51:29.01
IV.CASP.HHE. ML:1.7 0.00026 0.24 AML other m 2020-07-08T16:51:31.01
IV.TRIF.CHN. ML:1.8 0.000532 1.4 AML other m 2020-07-08T16:51:31.14
IV.CASP.HHN. ML:1.6 0.000185 1.4 AML other m 2020-07-08T16:51:35.26
IV.CELB.HHN. ML:1.9 0.000213 0.7 AML other m 2020-07-08T16:51:39.01
IV.CELB.HHE. ML:2.1 0.0003325 0.36 AML other m 2020-07-08T16:51:39.69
IV.MAON.HHN. ML:2.1 0.0001995 0.16 AML other m 2020-07-08T16:51:45.72
IV.MAON.HHE. ML:2 0.00016 1.34 AML other m 2020-07-08T16:51:46.00
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download