Earthquake with magnitude of ML 1.1 on date 27-05-2020 and time 20:33:38 (Italy) in region 6 km S Radicondoli (SI)

A magnitude ML 1.1 earthquake occured in region: 6 km S Radicondoli (SI), on

  • 27-05-2020 18:33:38 (UTC)
  • 27-05-2020 20:33:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2090, 11.0230 at 10 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
Radicondoli SI 6 914 914
Chiusdino SI 8 1903 2817
Montieri GR 9 1204 4021
Castelnuovo di Val di Cecina PI 9 2231 6252
Casole d'Elsa SI 15 3897 10149
Monticiano SI 15 1571 11720
Monterotondo Marittimo GR 15 1371 13091
Pomarance PI 16 5897 18988
Sovicille SI 19 10116 29104

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km W of Siena (53903 inhabitants)
50 Km N of Grosseto (82087 inhabitants)
63 Km S of Scandicci (50609 inhabitants)
65 Km SW of Firenze (382808 inhabitants)
69 Km SE of Livorno (159219 inhabitants)
75 Km S of Prato (191150 inhabitants)
75 Km W of Arezzo (99543 inhabitants)
76 Km SE of Pisa (89158 inhabitants)
81 Km S of Pistoia (90315 inhabitants)
82 Km SE of Lucca (89046 inhabitants)
96 Km SE of Viareggio (62467 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 1.1 2020-05-27
18:33:38
43.2087 11.023 10 2020-11-19
12:37:00
Bollettino Sismico Italiano INGV 82776871
Reviewed
Rev100
ML 1.1 2020-05-27
18:33:38
43.1958 11.0312 11 2020-05-27
18:45:13
Sala Sismica INGV-Roma 79629021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-27 18:33:38 ± 0.2
Latitude 43.2087 ± 0.0117
Longitude 11.0230 ± 0.0148
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 82776871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1408
Semi-minor axis of confidence ellipse (meter) 878
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 146
Circular confidence region, given by single value of horizontal uncertainty (meter) 1410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 112
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.75273
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 82776871
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-10 00:08:25

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 79629021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-27 18:45:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PAOL.HHZ. 2020-05-27T18:35:10.72 3.0 undecidable manual Sn 0.64 0
IV.ROSPO.HHZ. 2020-05-27T18:35:03.39 3.0 undecidable manual Sn 4.82 0
IV.BRSN.EHZ. 2020-05-27T18:34:10.96 3.0 undecidable manual S -0.19 0
IV.RMP.HHZ. 2020-05-27T18:34:10.52 3.0 positive manual Pn 2.4 0
IV.CELB.HHZ. 2020-05-27T18:33:54.57 0.3 undecidable manual P 232 83.5497 50 1.48 37
IV.CASP.HHZ. 2020-05-27T18:33:53.69 0.6 undecidable manual S 195 48.1185 50 -0.56 41
TV.SF01.EHZ. 2020-05-27T18:33:50.43 0.3 undecidable manual P 135 62.0934 50 0.64 59
IV.CSNT.HHZ. 2020-05-27T18:33:50.74 0.3 undecidable manual S 36 36.4413 50 -0.39 66
TV.SF04.EHZ. 2020-05-27T18:33:50.75 0.3 undecidable manual P 128 66.1893 50 0.32 64
IV.RIBO.EHZ.01 2020-05-27T18:33:48.12 0.3 undecidable manual S 176 28.8489 50 -1 53
IV.CASP.HHZ. 2020-05-27T18:33:48.43 0.3 undecidable manual P 195 48.1185 50 0.8 56
IV.MAGO.CHZ. 2020-05-27T18:33:48.83 0.3 undecidable manual S 284 30.3474 50 -0.69 61
IV.RONT.HHZ. 2020-05-27T18:33:48.77 3.0 negative manual P 0.98 0
IV.CSNT.HHZ. 2020-05-27T18:33:46.23 1.0 undecidable manual P 36 36.4413 50 0.39 22
IV.MAGO.CHZ. 2020-05-27T18:33:45.10 0.1 undecidable manual P 284 30.3474 50 0.2 93
IV.RIBO.EHZ.01 2020-05-27T18:33:44.60 0.1 undecidable manual P 176 28.8489 50 -0.07 96
IV.TRIF.CHZ. 2020-05-27T18:33:44.18 0.3 undecidable manual S 223 14.2746 124 -0.35 70
IV.FROS.CHZ. 2020-05-27T18:33:43.20 0.3 undecidable manual S 89 10.7781 131 -0.36 70
IV.TRIF.CHZ. 2020-05-27T18:33:42.20 0.3 undecidable manual P 223 14.2746 124 0.18 72
IV.FROS.CHZ. 2020-05-27T18:33:41.45 0.1 positive manual P 89 10.7781 131 -0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FROS.CHN. ML:1.3 0.00025771155 0.2176 AML other m 2020-05-27T18:33:43.28
IV.TRIF.CHN. ML:1.5 0.00031787845 0.0896 AML other m 2020-05-27T18:33:44.51
IV.TRIF.CHE. ML:1.5 0.00031501049999999996 0.1024 AML other m 2020-05-27T18:33:45.02
IV.FROS.CHE. ML:1.2 0.00022067845 0.3456 AML other m 2020-05-27T18:33:45.36
IV.RIBO.EHE.01 ML:1.1 0.00007091974 0.1664 AML other m 2020-05-27T18:33:48.29
IV.MAGO.CHE. ML:1.0 0.000043097045 0.0896 AML other m 2020-05-27T18:33:49.36
IV.MAGO.CHN. ML:0.9 0.000038253215 0.1024 AML other m 2020-05-27T18:33:49.92
IV.CSNT.HHN. ML:0.9 0.000030850654999999996 0.2432 AML other m 2020-05-27T18:33:50.85
IV.CSNT.HHE. ML:0.7 0.00002092784 0.1792 AML other m 2020-05-27T18:33:51.01
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