Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 15-06-2020 and time 19:44:50 (Italy) in region 3 km E Montieri (GR)

A magnitude ML 1.9 earthquake occured in region: 3 km E Montieri (GR), on

  • 15-06-2020 17:44:50 (UTC)
  • 15-06-2020 19:44:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1310, 11.0550 at 8 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 3 1204 1204
Chiusdino SI 4 1903 3107
Monticiano SI 10 1571 4678
Radicondoli SI 15 914 5592
Castelnuovo di Val di Cecina PI 15 2231 7823
Roccastrada GR 16 9199 17022
Massa Marittima GR 16 8375 25397
Monterotondo Marittimo GR 16 1371 26768

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km SW of Siena (53903 inhabitants)
41 Km N of Grosseto (82087 inhabitants)
71 Km S of Scandicci (50609 inhabitants)
73 Km S of Firenze (382808 inhabitants)
76 Km SE of Livorno (159219 inhabitants)
77 Km W of Arezzo (99543 inhabitants)
84 Km S of Prato (191150 inhabitants)
84 Km SE of Pisa (89158 inhabitants)
90 Km S of Pistoia (90315 inhabitants)
91 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 1.9 2020-06-15
17:44:50		 43.1307 11.0547 8 2020-11-19
12:36:52		 Bollettino Sismico Italiano INGV 80883881
Reviewed
Rev100 		ML 1.9 2020-06-15
17:44:50		 43.1282 11.0502 8 2020-06-15
17:55:45		 Sala Sismica INGV-Roma 80211011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-06-15 17:44:50 ± 0.12
Latitude 43.1307 ± 0.0072
Longitude 11.0547 ± 0.0099
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80883881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 768
Semi-minor axis of confidence ellipse (meter) 714
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 304
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.10792
Epicentral distance of station farthest from the epicenter (degree) 0.77971
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:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 21
Type of magnitude ML
Reference to an origin 80211011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-06-15 17:55:45

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 21
Type of magnitude ML
Reference to an origin 80883881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-06 20:35:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RUFI.EHZ. 2020-06-15T17:45:16.37 0.6 undecidable manual S 25 86.5467 50 0.02 44
IV.MAON.HHZ. 2020-06-15T17:45:14.17 0.6 undecidable manual S 175 78.1662 50 0.08 44
IV.MCIV.CHZ. 2020-06-15T17:45:09.01 0.6 undecidable manual S 128 63.7917 50 -1.26 29
TV.SF01.EHZ. 2020-06-15T17:45:08.05 0.3 undecidable manual S 130 54.4011 50 0.31 66
TV.SF04.EHZ. 2020-06-15T17:45:07.87 0.6 undecidable manual S 123 59.0964 50 -1.13 32
IV.CELB.HHZ. 2020-06-15T17:45:05.01 0.3 undecidable manual P 238 80.6637 50 0.67 56
IV.RUFI.EHZ. 2020-06-15T17:45:05.65 0.3 undecidable manual P 25 86.5467 50 0.4 61
IV.MAON.HHZ. 2020-06-15T17:45:04.60 0.3 undecidable manual P 175 78.1662 50 0.65 57
IV.CRMI.HHE. 2020-06-15T17:45:03.16 0.3 undecidable manual P 355 73.9704 50 -0.16 65
IV.CASP.HHZ. 2020-06-15T17:45:03.16 0.6 undecidable manual S 202 40.7259 50 -0.94 36
IV.PII.HHZ. 2020-06-15T17:45:03.82 0.3 undecidable manual P 327 78.2661 50 -0.15 65
IV.MCIV.CHZ. 2020-06-15T17:45:01.94 0.1 positive manual P 128 63.7917 50 0.2 88
TV.SF04.EHZ. 2020-06-15T17:45:01.19 0.1 positive manual P 123 59.0964 50 0.18 89
TV.SF01.EHZ. 2020-06-15T17:45:00.24 0.3 undecidable manual P 130 54.4011 50 -0.05 69
IV.ARCI.HNE. 2020-06-15T17:44:59.09 1.0 undecidable manual P 132 46.0206 50 0.08 23
IV.CASP.HHZ. 2020-06-15T17:44:57.97 0.3 undecidable manual P 202 40.7259 50 -0.21 69
IV.FROS.CHZ. 2020-06-15T17:44:54.79 0.6 undecidable manual S 43 11.9769 124 -0.32 47
IV.RIBO.EHZ.01 2020-06-15T17:44:54.72 0.1 negative manual P 182 20.1687 112 0.28 94
IV.TRIF.CHZ. 2020-06-15T17:44:54.73 0.6 undecidable manual S 262 12.4764 123 -0.5 45
IV.FROS.CHZ. 2020-06-15T17:44:53.03 0.1 negative manual P 43 11.9769 124 0.04 100
IV.TRIF.CHZ. 2020-06-15T17:44:52.98 0.1 positive manual P 262 12.4764 123 -0.08 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHN. ML:2.4 0.003116673 0.128 AML other m 2020-06-15T17:44:54.84
IV.FROS.CHE. ML:2.1 0.001624443 0.0896 AML other m 2020-06-15T17:44:54.84
IV.FROS.CHN. ML:2.2 0.0019991795 0.1152 AML other m 2020-06-15T17:44:55.14
IV.TRIF.CHE. ML:2.2 0.0018369330000000002 0.128 AML other m 2020-06-15T17:44:55.54
IV.RIBO.EHE.01 ML:1.6 0.00034419815 0.128 AML other m 2020-06-15T17:44:57.95
IV.MCIV.CHE. ML:1.5 0.000057749999999999994 0.68 AML other m 2020-06-15T17:45:02.57
IV.CASP.HHN. ML:1.9 0.0002902069 0.2048 AML other m 2020-06-15T17:45:03.35
IV.CASP.HHE. ML:1.8 0.00020520264999999998 0.1536 AML other m 2020-06-15T17:45:03.56
TV.SF01.EHN. ML:1.9 0.0001719342 0.192 AML other m 2020-06-15T17:45:08.42
TV.SF01.EHE. ML:1.9 0.00019404195999999998 0.3328 AML other m 2020-06-15T17:45:08.51
TV.SF04.EHE. ML:2.0 0.00020108279500000002 0.2432 AML other m 2020-06-15T17:45:09.84
IV.MCIV.CHN. ML:1.4 0.0000435 0.58 AML other m 2020-06-15T17:45:11.13
TV.SF04.EHN. ML:1.7 0.00011549565000000001 0.2944 AML other m 2020-06-15T17:45:11.37
IV.MAON.HNE. ML:2.0 0.00015176234999999999 1.104 AML other m 2020-06-15T17:45:12.24
IV.PII.HHN. ML:1.3 0.00003249043 0.2816 AML other m 2020-06-15T17:45:15.26
IV.MAON.HHN. ML:1.9 0.00010595221999999999 1.7952 AML other m 2020-06-15T17:45:15.01
IV.MAON.HNN. ML:2.1 0.0001757047 0.9856 AML other m 2020-06-15T17:45:22.35
IV.CELB.HHN. ML:1.9 0.00010188549 0.064 AML other m 2020-06-15T17:45:23.17
IV.CELB.HHE. ML:1.8 0.0000970699 0.064 AML other m 2020-06-15T17:45:24.56
IV.MAON.HHE. ML:1.8 0.000102177445 1.1136 AML other m 2020-06-15T17:45:26.36
IV.PII.HHE. ML:1.4 0.000037022819999999995 1.0752 AML other m 2020-06-15T17:45:29.64
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