Earthquake with magnitude of ML 1.3 on date 25-10-2019 and time 11:27:34 (Italy) in region 2 km SW Chiusdino (SI)

A magnitude ML 1.3 earthquake occured in region: 2 km SW Chiusdino (SI), on

  • 25-10-2019 09:27:34 (UTC)
  • 25-10-2019 11:27:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.14, 11.07 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
Chiusdino SI 2 1903 1903
Montieri GR 5 1204 3107
Monticiano SI 9 1571 4678
Radicondoli SI 13 914 5592
Castelnuovo di Val di Cecina PI 15 2231 7823
Roccastrada GR 17 9199 17022
Monterotondo Marittimo GR 18 1371 18393
Massa Marittima GR 18 8375 26768
Sovicille SI 20 10116 36884

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SW of Siena (53903 inhabitants)
43 Km N of Grosseto (82087 inhabitants)
69 Km S of Scandicci (50609 inhabitants)
71 Km S of Firenze (382808 inhabitants)
75 Km W of Arezzo (99543 inhabitants)
77 Km SE of Livorno (159219 inhabitants)
82 Km S of Prato (191150 inhabitants)
83 Km SE of Pisa (89158 inhabitants)
89 Km S of Pistoia (90315 inhabitants)
90 Km SE of Lucca (89046 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
Rev 100 ML 1.3 2019-10-25
09:27:34
43.15 11.07 5 2019-10-25
09:34:25
Sala Sismica INGV-Roma 73438911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-25 09:27:34 ± 0.14
Latitude 43.15 ± 0.01
Longitude 11.07 ± 0.01
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73438911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1420
Semi-minor axis of confidence ellipse (meter) 600
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 316
Circular confidence region, given by single value of horizontal uncertainty (meter) 1420
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 160
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.38491
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 3
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 73438911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-25 09:34:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MPNC.HHZ. 2019-10-25T09:28:07.53 3.0 undecidable manual Sn 0.47 0
IV.NDIM.HNZ. 2019-10-25T09:28:00.30 3.0 undecidable manual Sg 6.62 0
IV.SPS2.HHZ. 2019-10-25T09:27:55.46 3.0 undecidable manual Sg 13.69 0
IV.CASP.HHZ. 2019-10-25T09:27:49.55 0.3 undecidable manual S 203 0.3849 97 -0.38 66
IV.MILN.HNZ. 2019-10-25T09:27:46.97 3.0 undecidable manual Pg 21.66 0
IV.SARZ.HNZ. 2019-10-25T09:27:45.77 3.0 undecidable manual Pg 21.68 0
IV.CASP.HHZ. 2019-10-25T09:27:44.00 0.1 undecidable manual P 203 0.3849 97 0.38 89
IV.MONC.HHZ. 2019-10-25T09:27:43.44 3.0 negative manual Pn 9.38 0
IV.TRIF.CHZ. 2019-10-25T09:27:40.14 0.3 undecidable manual S 256 0.1277 111 -0.09 74
IV.FROS.CHZ. 2019-10-25T09:27:38.68 0.3 undecidable manual S 43 0.089 119 -0.2 73
IV.TRIF.CHZ. 2019-10-25T09:27:38.06 0.1 undecidable manual P 256 0.1277 111 0.05 100
IV.FROS.CHZ. 2019-10-25T09:27:37.31 0.1 undecidable manual P 43 0.089 119 0.08 100
IV.EUCT.HNZ. 2019-10-25T09:27:34.19 3.0 positive manual Pn 9.98 0
CR.STON.BHZ. 2019-10-25T09:27:26.44 3.0 undecidable manual Sg 22.370001 0
IV.DGI.HHZ. 2019-10-25T09:27:23.40 3.0 undecidable manual Pn 3.73 0
IV.MSRU.HHZ. 2019-10-25T09:27:16.03 3.0 undecidable manual Pn 2.77 0
GU.POPM.HHZ. 2019-10-25T09:27:13.74 3.0 negative manual Pg 10.82 0
IV.PE3.EHZ. 2019-10-25T09:27:10.08 3.0 undecidable manual Sn -4.37 0
IV.MRLC.HHZ. 2019-10-25T09:27:07.67 3.0 undecidable manual Sn 4.03 0
IV.CPGN.EHZ. 2019-10-25T09:26:51.99 3.0 undecidable manual Pg 4.51 0
IV.APEC.HHZ. 2019-10-25T09:26:49.45 3.0 undecidable manual Pg 4.35 0
IV.PTRJ.HHZ. 2019-10-25T09:26:48.84 3.0 undecidable manual S -2.2 0
IT.VNF1.HGZ. 2019-10-25T09:26:34.94 3.0 undecidable manual Pn 1.73 0
IV.FDMO.HHZ. 2019-10-25T09:26:33.76 3.0 negative manual P -2.57 0
IV.CSP1.EHZ. 2019-10-25T09:26:33.14 3.0 negative manual Pn -2.28 0
IV.SMA1.EHZ. 2019-10-25T09:26:31.11 3.0 negative manual P -1.91 0
IV.MTRA.EHZ. 2019-10-25T09:26:31.05 3.0 undecidable manual P -1.47 0
IV.MMO1.EHZ. 2019-10-25T09:26:31.15 3.0 undecidable manual P -2.39 0
IV.RNI2.HHZ. 2019-10-25T09:26:30.19 3.0 negative manual P 0.01 0
IT.LRNO.HNZ. 2019-10-25T09:26:27.64 3.0 undecidable manual Pn 3.72 0
IV.LPEL.HHZ. 2019-10-25T09:26:24.30 3.0 undecidable manual P -1.98 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LPEL.HHN. ML:2.9 0.0001255 0.08 AML other m 2019-10-25T09:26:27.78
IV.LPEL.HHE. ML:2.7 6.415E-5 0.22 AML other m 2019-10-25T09:26:27.79
IV.FROS.CHN. ML:1.2 0.0002705 0.12 AML other m 2019-10-25T09:27:39.90
IV.TRIF.CHN. ML:1.5 0.0003975 0.7 AML other m 2019-10-25T09:27:40.91
IV.TRIF.CHE. ML:1.5 0.0003485 0.22 AML other m 2019-10-25T09:27:40.70
IV.FROS.CHE. ML:1.2 0.000255 0.34 AML other m 2019-10-25T09:27:43.28
IV.CASP.HHE. ML:1.1 3.856567E-5 1.44 AML other m 2019-10-25T09:27:49.94
IV.CASP.HHN. ML:1.2 5.475165E-5 2.0992 AML other m 2019-10-25T09:27:50.89
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
Waveforms Seismic signals in full SEED format Download