Earthquake with magnitude of ML 0.9 on date 07-04-2020 and time 05:48:45 (UTC) in region 2 km W Monteriggioni (SI)

A magnitude ML 0.9 earthquake occured in region: 2 km W Monteriggioni (SI), on

  • 07-04-2020 05:48:45 (UTC)
  • 07-04-2020 07:48:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4010, 11.1910 at 8 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
Monteriggioni SI 3 9810 9810
Colle di Val d'Elsa SI 6 21620 31430
Poggibonsi SI 8 29196 60626
Castellina in Chianti SI 11 2859 63485
Casole d'Elsa SI 14 3897 67382
Sovicille SI 14 10116 77498
San Gimignano SI 14 7820 85318
Siena SI 15 53903 139221
Barberino Val d'Elsa FI 16 4386 143607
Radda in Chianti SI 18 1613 145220
Tavarnelle Val di Pesa FI 18 7800 153020
Radicondoli SI 20 914 153934

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NW of Siena (53903 inhabitants)
40 Km S of Scandicci (50609 inhabitants)
41 Km S of Firenze (382808 inhabitants)
54 Km S of Prato (191150 inhabitants)
56 Km W of Arezzo (99543 inhabitants)
63 Km SE of Pistoia (90315 inhabitants)
71 Km N of Grosseto (82087 inhabitants)
73 Km E of Pisa (89158 inhabitants)
73 Km E of Livorno (159219 inhabitants)
74 Km SE of Lucca (89046 inhabitants)
92 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
Reviewed
Rev100
ML 0.9 2020-04-07
05:48:45
43.4012 11.1908 8 2020-04-07
06:38:39
Sala Sismica INGV-Roma 77968201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-07 05:48:45 ± 0.06
Latitude 43.4012 ± 0.0018
Longitude 11.1908 ± 0.0025
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77968201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 240
Semi-minor axis of confidence ellipse (meter) 218
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 200
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.42268
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 3
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 77968201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-07 06:38:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RAFF.HHZ. 2020-04-07T05:50:33.22 3.0 undecidable manual Pg 19.15 0
IV.CGL.BHZ. 2020-04-07T05:50:30.46 3.0 undecidable manual Sn -6.46 0
IV.ROSPO.HHZ. 2020-04-07T05:49:54.05 3.0 undecidable manual Sn 1.54 0
IV.IFIL.HHZ. 2020-04-07T05:49:53.70 3.0 negative manual Pn -4.02 0
IV.TDS.HHZ. 2020-04-07T05:49:52.27 3.0 undecidable manual Pn -2.54 0
IV.SGO.HNZ. 2020-04-07T05:49:45.30 3.0 undecidable manual Pg 7.02 0
GU.RNCA.HHZ. 2020-04-07T05:49:40.72 3.0 undecidable manual Sn 1.09 0
IV.GIUL.HHZ. 2020-04-07T05:49:38.37 3.0 undecidable manual Sn -3.64 0
IV.CIGN.HHZ. 2020-04-07T05:49:28.01 3.0 undecidable manual Pn 3.23 0
IV.OFFI.HHZ. 2020-04-07T05:49:24.08 3.0 undecidable manual Sn -0.7 0
IV.CRMI.HHN. 2020-04-07T05:48:54.21 0.1 undecidable manual P 339 46.9197 50 -0.01 94
IV.FROS.CHZ. 2020-04-07T05:48:53.09 0.1 undecidable manual S 188 21.3675 111 -0.05 98
IV.CSNT.HHZ. 2020-04-07T05:48:50.06 0.1 undecidable manual S 45 11.2776 126 0.03 100
IV.ASQU.HHZ. 2020-04-07T05:48:50.29 3.0 undecidable manual P 0
IV.FROS.CHZ. 2020-04-07T05:48:49.87 0.1 positive manual P 188 21.3675 111 0.09 97
IV.CSNT.HHZ. 2020-04-07T05:48:47.94 0.1 positive manual P 45 11.2776 126 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSNT.HHE. ML:0.7 0.00006095 0.2 AML other m 2020-04-07T05:48:50.15
IV.CSNT.HHN. ML:1.0 0.00011479999999999999 0.6 AML other m 2020-04-07T05:48:50.07
IV.FROS.CHE. ML:1.1 0.00009204999999999999 0.92 AML other m 2020-04-07T05:48:53.31
IV.FROS.CHN. ML:1.0 0.0000707 1.28 AML other m 2020-04-07T05:48:53.05
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