Earthquake with magnitude of ML 1.4 on date 15-10-2019 and time 13:26:01 (Italy) in region 4 km N Montieri (GR)

A magnitude ML 1.4 earthquake occured in region: 4 km N Montieri (GR), on

  • 15-10-2019 11:26:01 (UTC)
  • 15-10-2019 13:26:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.17, 11.02 at 10 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
Montieri GR 4 1204 1204
Chiusdino SI 5 1903 3107
Radicondoli SI 11 914 4021
Castelnuovo di Val di Cecina PI 11 2231 6252
Monticiano SI 13 1571 7823
Monterotondo Marittimo GR 14 1371 9194
Massa Marittima GR 17 8375 17569
Pomarance PI 19 5897 23466
Casole d'Elsa SI 19 3897 27363

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km SW of Siena (53903 inhabitants)
46 Km N of Grosseto (82087 inhabitants)
67 Km S of Scandicci (50609 inhabitants)
70 Km S of Firenze (382808 inhabitants)
72 Km SE of Livorno (159219 inhabitants)
77 Km W of Arezzo (99543 inhabitants)
79 Km SE of Pisa (89158 inhabitants)
80 Km S of Prato (191150 inhabitants)
86 Km S of Pistoia (90315 inhabitants)
86 Km SE of Lucca (89046 inhabitants)
100 Km SE of Viareggio (62467 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 1.4 2019-10-15
11:26:01
43.17 11.02 10 2019-10-15
11:42:26
Sala Sismica INGV-Roma 73267001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-15 11:26:01 ± 0.12
Latitude 43.17 ± 0.01
Longitude 11.02 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73267001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1115
Semi-minor axis of confidence ellipse (meter) 632
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 164
Circular confidence region, given by single value of horizontal uncertainty (meter) 1120
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.10432
Epicentral distance of station farthest from the epicenter (degree) 0.45686
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 73267001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-15 11:42:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARCI.HNZ. 2019-10-15T11:26:17.70 0.6 undecidable manual S 134 0.4569 50 -0.49 44
IV.CSNT.HHE. 2019-10-15T11:26:15.05 0.6 undecidable manual S 32 0.3606 50 -0.28 47
IV.MAGO.CHZ. 2019-10-15T11:26:12.66 0.3 undecidable manual S 291 0.2869 50 -0.5 69
IV.ARCI.HNZ. 2019-10-15T11:26:11.64 0.3 undecidable manual P 134 0.4569 50 0.3 69
IV.OSSC.HHZ. 2019-10-15T11:26:10.50 0.3 undecidable manual P 24 0.3894 50 0.31 70
IV.CSNT.HHE. 2019-10-15T11:26:09.86 0.3 undecidable manual P 32 0.3606 50 0.17 73
IV.MAGO.CHZ. 2019-10-15T11:26:08.77 0.3 undecidable manual P 291 0.2869 50 0.33 71
IV.TRIF.CHZ. 2019-10-15T11:26:07.08 0.3 undecidable manual S 239 0.1043 131 -0.25 75
IV.RIBO.EHZ.01 2019-10-15T11:26:06.78 3.0 undecidable manual S 0.2203 -4.39 0
IV.FROS.CHZ. 2019-10-15T11:26:06.96 0.3 undecidable manual S 67 0.1043 131 -0.37 73
IV.FROS.CHZ. 2019-10-15T11:26:05.24 0.3 undecidable manual P 67 0.1043 131 0.17 76
IV.TRIF.CHZ. 2019-10-15T11:26:05.33 0.1 undecidable manual P 239 0.1043 131 0.25 100
IV.RIBO.EHZ.01 2019-10-15T11:26:03.63 3.0 undecidable manual P 0.2203 -3.66 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHN. ML:1.6 0.0004045 0.52 AML other m 2019-10-15T11:26:06.78
IV.FROS.CHE. ML:1.3 0.0002215 0.72 AML other m 2019-10-15T11:26:07.18
IV.FROS.CHN. ML:1.6 0.0004385 0.36 AML other m 2019-10-15T11:26:07.23
IV.TRIF.CHE. ML:1.6 0.00042 0.26 AML other m 2019-10-15T11:26:07.44
IV.MAGO.CHN. ML:1.4 9.9598165E-5 0.1344 AML other m 2019-10-15T11:26:12.84
IV.MAGO.CHE. ML:1.2 6.3855665E-5 0.1408 AML other m 2019-10-15T11:26:13.15
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