Earthquake with magnitude of ML 1.7 on date 16-05-2020 and time 04:45:35 (Italy) in region 1 km NE Montieri (GR)

A magnitude ML 1.7 earthquake occured in region: 1 km NE Montieri (GR), on

  • 16-05-2020 02:45:35 (UTC)
  • 16-05-2020 04:45:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1380, 11.0280 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.

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 5 1903 3107
Monticiano SI 12 1571 4678
Castelnuovo di Val di Cecina PI 13 2231 6909
Radicondoli SI 14 914 7823
Monterotondo Marittimo GR 14 1371 9194
Massa Marittima GR 15 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)
78 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 1.7 2020-05-16
02:45:35
43.1382 11.0283 9 2020-11-19
12:36:56
Bollettino Sismico Italiano INGV 81736641
Reviewed
Rev100
ML 1.7 2020-05-16
02:45:35
43.1425 11.0192 9 2020-05-16
02:52:20
Sala Sismica INGV-Roma 79185121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-16 02:45:35 ± 0.15
Latitude 43.1382 ± 0.0090
Longitude 11.0283 ± 0.0136
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 81736641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1140
Semi-minor axis of confidence ellipse (meter) 795
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 305
Circular confidence region, given by single value of horizontal uncertainty (meter) 1140.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.71496
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 79185121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-16 02:52:20

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 81736641
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-07 12:53:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NDIM.HHZ. 2020-05-16T02:46:26.42 3.0 undecidable manual Sn -3.22 0
TV.SF01.EHZ. 2020-05-16T02:45:54.33 0.6 undecidable manual S 130 56.499 50 0.63 40
TV.SF04.EHZ. 2020-05-16T02:45:54.00 0.6 undecidable manual S 123 61.2942 50 -0.97 34
IV.ARCI.HHZ. 2020-05-16T02:45:50.86 0.3 undecidable manual S 131 48.2184 50 -0.62 61
IV.MAON.HHZ. 2020-05-16T02:45:50.40 0.1 undecidable manual P 174 79.1652 50 0.8 71
IV.CELB.HHZ. 2020-05-16T02:45:50.47 0.1 undecidable manual P 237 79.365 50 0.85 70
IV.CSNT.HHZ. 2020-05-16T02:45:49.41 0.3 undecidable manual S 30 42.7239 50 -0.62 62
IV.CASP.HHZ. 2020-05-16T02:45:48.66 0.1 undecidable manual S 199 40.7259 50 -0.83 76
TV.SF04.EHZ. 2020-05-16T02:45:47.26 0.1 undecidable manual P 123 61.2942 50 0.42 85
TV.SF01.EHZ. 2020-05-16T02:45:46.36 0.1 undecidable manual P 130 56.499 50 0.25 88
IV.ARCI.HHZ. 2020-05-16T02:45:45.03 0.1 undecidable manual P 131 48.2184 50 0.2 91
IV.CSNT.HHZ. 2020-05-16T02:45:43.90 0.1 undecidable manual P 30 42.7239 50 -0.09 94
IV.RIBO.EHZ.01 2020-05-16T02:45:43.39 0.3 undecidable manual S 176 21.0678 114 -0.31 70
IV.CASP.HHZ. 2020-05-16T02:45:43.63 0.1 undecidable manual P 199 40.7259 50 -0.05 95
IV.FROS.CHZ. 2020-05-16T02:45:41.10 0.3 undecidable manual S 52 13.0758 125 -0.17 73
IV.RIBO.EHZ.01 2020-05-16T02:45:40.41 0.1 undecidable manual P 176 21.0678 114 0.08 98
IV.TRIF.CHZ. 2020-05-16T02:45:40.09 0.3 undecidable manual S 256 10.4784 131 -0.48 68
IV.FROS.CHZ. 2020-05-16T02:45:39.14 0.1 undecidable manual P 52 13.0758 125 0.21 96
IV.TRIF.CHZ. 2020-05-16T02:45:38.58 0.1 undecidable manual P 256 10.4784 131 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHE. ML:2.3 0.002485 0.12 AML other m 2020-05-16T02:45:40.39
IV.TRIF.CHN. ML:2.2 0.0022249999999999995 0.1 AML other m 2020-05-16T02:45:40.42
IV.FROS.CHE. ML:1.8 0.000728 0.62 AML other m 2020-05-16T02:45:41.18
IV.FROS.CHN. ML:2.0 0.0010999999999999998 0.42 AML other m 2020-05-16T02:45:41.42
IV.CASP.HHN. ML:2.0 0.00033499999999999996 1.68 AML other m 2020-05-16T02:45:48.85
IV.CASP.HHE. ML:1.7 0.000168 0.42 AML other m 2020-05-16T02:45:49.25
IV.CSNT.HHE. ML:1.4 0.00007905000000000001 1.52 AML other m 2020-05-16T02:45:49.81
IV.CSNT.HHN. ML:1.3 0.0000671 0.16 AML other m 2020-05-16T02:45:49.76
IV.ARCI.HHN. ML:1.4 0.00007280000000000001 0.14 AML other m 2020-05-16T02:45:51.81
IV.ARCI.HHE. ML:1.2 0.0000452 0.38 AML other m 2020-05-16T02:45:52.25
TV.SF01.EHN. ML:1.7 0.0001197 0.18 AML other m 2020-05-16T02:45:54.69
TV.SF01.EHE. ML:1.9 0.00015900000000000002 0.36 AML other m 2020-05-16T02:45:54.68
TV.SF04.EHE. ML:1.8 0.0001378 0.18 AML other m 2020-05-16T02:45:56.16
TV.SF04.EHN. ML:1.6 0.00009180000000000001 0.28 AML other m 2020-05-16T02:45:56.24
IV.MAON.HHE. ML:1.7 0.00006875 0.56 AML other m 2020-05-16T02:46:02.01
IV.MAON.HHN. ML:1.7 0.0000713 1 AML other m 2020-05-16T02:46:02.54
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