Earthquake with magnitude of ML 1.2 on date 18-03-2019 and time 03:32:34 (UTC) in region 2 km NW Montieri (GR)

A magnitude ML 1.2 earthquake occured in region: 2 km NW Montieri (GR), on

  • 18-03-2019 03:32:34 (UTC)
  • 18-03-2019 04:32:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.15, 11 at 9 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 2 1204 1204
Chiusdino SI 7 1903 3107
Castelnuovo di Val di Cecina PI 10 2231 5338
Monterotondo Marittimo GR 12 1371 6709
Radicondoli SI 13 914 7623
Massa Marittima GR 14 8375 15998
Monticiano SI 14 1571 17569

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km SW of Siena (53903 inhabitants)
44 Km N of Grosseto (82087 inhabitants)
70 Km S of Scandicci (50609 inhabitants)
72 Km SE of Livorno (159219 inhabitants)
72 Km S of Firenze (382808 inhabitants)
80 Km W of Arezzo (99543 inhabitants)
80 Km SE of Pisa (89158 inhabitants)
82 Km S of Prato (191150 inhabitants)
88 Km SE of Lucca (89046 inhabitants)
88 Km S of Pistoia (90315 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 1.2 2019-03-18
03:32:34
43.15 11 9 2019-03-18
03:52:58
Sala Sismica INGV-Roma 66652591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-18 03:32:34 ± 0.12
Latitude 43.15 ± 0.01
Longitude 11.00 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66652591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 926
Semi-minor axis of confidence ellipse (meter) 142
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 305
Circular confidence region, given by single value of horizontal uncertainty (meter) 930
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.72485
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 7
Type of magnitude ML
Reference to an origin 66652591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-18 03:52:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.OZOL.EHZ. 2019-03-18T03:34:03.74 3.0 undecidable manual P 0
ST.GAGG.HHZ. 2019-03-18T03:33:56.94 3.0 undecidable manual Sn -1.68 0
IV.ORZI.HHZ. 2019-03-18T03:33:50.89 3.0 undecidable manual Sg 6.28 0
OX.SABO.HNZ. 2019-03-18T03:33:35.11 3.0 undecidable manual Pg 6.18 0
GU.CANO.HHZ. 2019-03-18T03:33:11.60 3.0 undecidable manual Pn -0.34 0
IV.MMUR.HNZ. 2019-03-18T03:33:09.59 3.0 undecidable manual S 0
IV.MMUR.HNZ. 2019-03-18T03:33:06.09 3.0 undecidable manual P 2.61 0
IV.MAON.HHE. 2019-03-18T03:32:59.11 0.1 undecidable manual S 173 0.7249 50 0.4 85
IV.CELB.HHZ. 2019-03-18T03:32:57.65 0.3 undecidable manual S 236 0.706 50 -0.49 63
IV.SEI.HHZ. 2019-03-18T03:32:53.64 3.0 undecidable manual P -0.19 0
TV.SF01.EHE. 2019-03-18T03:32:53.01 0.3 undecidable manual S 129 0.5288 50 0.12 70
IV.OSSC.HHE. 2019-03-18T03:32:49.17 0.3 undecidable manual S 25 0.4146 50 -0.35 69
IV.MAON.HHE. 2019-03-18T03:32:49.12 0.3 undecidable manual P 173 0.7249 50 0.74 57
IV.CELB.HHZ. 2019-03-18T03:32:48.82 0.1 undecidable manual P 236 0.706 50 0.76 75
IV.CSNT.HHZ. 2019-03-18T03:32:48.18 0.6 undecidable manual S 32 0.3858 50 -0.5 45
IV.CASP.HHZ. 2019-03-18T03:32:47.25 0.3 undecidable manual S 196 0.3705 50 -0.97 55
TV.SF14.HHE. 2019-03-18T03:32:45.89 0.1 undecidable manual P 131 0.5945 50 -0.26 90
IV.FIR.HHZ. 2019-03-18T03:32:45.38 3.0 undecidable manual P 0
TV.SF01.EHE. 2019-03-18T03:32:45.15 0.1 undecidable manual P 129 0.5288 50 0.12 94
IV.OSSC.HHE. 2019-03-18T03:32:43.26 0.1 undecidable manual P 25 0.4146 50 0.18 95
IV.CASP.HHZ. 2019-03-18T03:32:42.26 0.1 undecidable manual P 196 0.3705 50 -0.07 98
IV.CSNT.HHZ. 2019-03-18T03:32:42.66 0.1 undecidable manual P 32 0.3858 50 0.07 98
IV.RIBO.EHZ.01 2019-03-18T03:32:42.18 0.3 undecidable manual S 171 0.2005 112 -0.42 70
IV.FROS.CHZ. 2019-03-18T03:32:39.81 0.1 undecidable manual S 61 0.1268 122 -0.25 99
IV.RIBO.EHZ.01 2019-03-18T03:32:39.15 1.0 undecidable manual P 171 0.2005 112 0.06 25
IV.TRIF.CHZ. 2019-03-18T03:32:38.43 0.1 undecidable manual S 246 0.0809 134 -0.24 100
IV.TRIF.CHZ. 2019-03-18T03:32:37.13 0.1 undecidable manual P 246 0.0809 134 0.31 98
IV.FROS.CHZ. 2019-03-18T03:32:37.93 0.1 negative manual P 61 0.1268 122 0.31 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHE. ML:1.7 0.0007702973 0.104 AML other m 2019-03-18T03:32:38.80
IV.TRIF.CHN. ML:1.7 0.0008368021 0.088 AML other m 2019-03-18T03:32:38.88
IV.FROS.CHE. ML:1.2 0.00017333755 0.112 AML other m 2019-03-18T03:32:40.17
IV.FROS.CHN. ML:1 0.000101074865 0.168 AML other m 2019-03-18T03:32:41.09
IV.RIBO.EHE.01 ML:1.2 0.000104564465 0.1792 AML other m 2019-03-18T03:32:42.32
IV.CASP.HHN. ML:1.1 4.370966E-5 0.0592 AML other m 2019-03-18T03:32:47.56
IV.CASP.HHE. ML:1.1 3.769733E-5 0.0816 AML other m 2019-03-18T03:32:47.69
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