ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.6 on date 17-03-2019 and time 21:02:17 (UTC) in region 7 km NW Castelnuovo di Val di Cecina (PI)

A magnitude ML 1.6 earthquake occured in region: 7 km NW Castelnuovo di Val di Cecina (PI), on

  • 17-03-2019 21:02:17 (UTC)
  • 17-03-2019 22:02:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.24, 10.84 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
Castelnuovo di Val di Cecina PI 7 2231 2231
Pomarance PI 7 5897 8128
Monterotondo Marittimo GR 11 1371 9499
Monteverdi Marittimo PI 12 758 10257
Radicondoli SI 17 914 11171
Volterra PI 18 10519 21690
Montecatini Val di Cecina PI 18 1749 23439
Guardistallo PI 18 1234 24673
Casale Marittimo PI 19 1122 25795
Montescudaio PI 19 2144 27939
Montieri GR 19 1204 29143
Bibbona LI 19 3175 32318
Sassetta LI 20 514 32832

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Siena (53903 inhabitants)
55 Km SE of Livorno (159219 inhabitants)
58 Km NW of Grosseto (82087 inhabitants)
63 Km SE of Pisa (89158 inhabitants)
64 Km SW of Scandicci (50609 inhabitants)
68 Km SW of Firenze (382808 inhabitants)
72 Km SE of Lucca (89046 inhabitants)
74 Km S of Prato (191150 inhabitants)
77 Km S of Pistoia (90315 inhabitants)
84 Km SE of Viareggio (62467 inhabitants)
88 Km W of Arezzo (99543 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 1.6 2019-03-17
21:02:17
43.24 10.84 9 2019-03-17
21:13:01
Sala Sismica INGV-Roma 66645751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-17 21:02:17 ± 0.12
Latitude 43.24 ± 0.01
Longitude 10.84 ± 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 66645751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 679
Semi-minor axis of confidence ellipse (meter) 447
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 103
Circular confidence region, given by single value of horizontal uncertainty (meter) 680
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.84177
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.4
Num. used stations 14
Type of magnitude ML
Reference to an origin 66645751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-17 21:13:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CMPR.HHZ. 2019-03-17T21:04:13.68 3.0 undecidable manual Sn -4.34 0
MN.TRI.HHZ. 2019-03-17T21:03:53.46 3.0 undecidable manual Sn 5.21 0
IT.VNF1.HGZ. 2019-03-17T21:03:53.21 3.0 undecidable manual Sg 11.29 0
IV.OVO.HHZ. 2019-03-17T21:03:26.69 3.0 undecidable manual Pg 12.98 0
IT.ORP.HGZ. 2019-03-17T21:03:21.91 3.0 positive manual Pn 4.87 0
MN.TRI.HHZ. 2019-03-17T21:03:17.57 3.0 negative manual Pg 8.87 0
IV.TREG.HNZ. 2019-03-17T21:03:01.33 3.0 undecidable manual Pg 5.66 0
IV.VVLD.HHZ. 2019-03-17T21:03:01.21 3.0 undecidable manual Pn 2.77 0
IV.IMI.HHZ. 2019-03-17T21:03:01.54 3.0 undecidable manual Pg 6.53 0
IV.MAON.HHZ. 2019-03-17T21:02:45.71 0.6 undecidable manual S 165 0.8418 50 -0.1 43
GU.POPM.HHZ. 2019-03-17T21:02:44.48 0.6 undecidable manual S 356 0.804 50 -0.21 43
IV.RUFI.EHZ. 2019-03-17T21:02:43.46 0.6 undecidable manual S 39 0.7698 50 -0.21 43
IV.CELB.HHZ. 2019-03-17T21:02:40.41 0.3 undecidable manual S 223 0.6745 50 -0.44 62
IV.PII.HHZ. 2019-03-17T21:02:36.03 0.3 undecidable manual S 335 0.5297 50 -0.52 63
IV.MAON.HHZ. 2019-03-17T21:02:35.30 0.6 positive manual P 165 0.8418 50 1.29 28
GU.POPM.HHZ. 2019-03-17T21:02:34.26 0.6 positive manual P 356 0.804 50 0.9 34
IV.MTCR.EHZ. 2019-03-17T21:02:34.13 0.6 undecidable manual P 9 0.7941 50 0.95 33
IV.CASP.HHZ. 2019-03-17T21:02:33.61 0.3 undecidable manual S 177 0.4524 50 -0.65 61
IV.RUFI.EHZ. 2019-03-17T21:02:33.46 1.0 negative manual P 39 0.7698 50 0.7 19
IV.MOCL.EHZ. 2019-03-17T21:02:33.97 1.0 undecidable manual P 18 0.8013 50 0.65 19
TV.SF01.EHZ. 2019-03-17T21:02:32.21 0.1 undecidable manual P 129 0.6835 50 0.92 69
IV.CSNT.HHZ. 2019-03-17T21:02:32.16 0.3 undecidable manual S 55 0.4029 50 -0.64 62
IV.OSSC.HHZ. 2019-03-17T21:02:32.53 0.3 undecidable manual S 47 0.4092 50 -0.46 66
TV.SF04.EHZ. 2019-03-17T21:02:32.99 1.0 undecidable manual P 124 0.7267 50 0.96 17
IV.CELB.HHZ. 2019-03-17T21:02:31.73 0.1 negative manual P 223 0.6745 50 0.59 79
IV.RIBO.EHE.01 2019-03-17T21:02:29.95 0.6 undecidable manual S 152 0.331 50 -0.73 40
IV.PII.HHZ. 2019-03-17T21:02:28.56 0.6 negative manual P 335 0.5297 50 -0.09 46
IV.CASP.HHZ. 2019-03-17T21:02:27.67 1.0 undecidable manual P 177 0.4524 50 0.34 22
IV.CSNT.HHZ. 2019-03-17T21:02:26.58 0.1 positive manual P 55 0.4029 50 0.09 95
IV.OSSC.HHZ. 2019-03-17T21:02:26.82 0.1 positive manual P 47 0.4092 50 0.22 92
IV.FROS.CHZ. 2019-03-17T21:02:26.88 0.3 undecidable manual S 98 0.2356 108 -0.54 66
IV.RIBO.EHE.01 2019-03-17T21:02:25.29 0.1 undecidable manual P 152 0.331 50 0.03 97
IV.TRIF.CHZ. 2019-03-17T21:02:23.49 0.3 undecidable manual S 159 0.1367 120 -0.43 70
IV.FROS.CHZ. 2019-03-17T21:02:23.53 0.1 negative manual P 98 0.2356 108 0.15 97
IV.MAGO.CHZ. 2019-03-17T21:02:23.20 0.3 undecidable manual S 283 0.1331 120 -0.6 66
IV.MAGO.CHZ. 2019-03-17T21:02:21.38 0.1 positive manual P 283 0.1331 120 0.09 100
IV.TRIF.CHZ. 2019-03-17T21:02:21.55 0.1 positive manual P 159 0.1367 120 0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MAGO.CHN. ML:2.5 0.00297 0.1 AML other m 2019-03-17T21:02:23.33
IV.MAGO.CHE. ML:2.1 0.001355 0.18 AML other m 2019-03-17T21:02:23.48
IV.TRIF.CHE. ML:2 0.0011155 0.3 AML other m 2019-03-17T21:02:24.25
IV.TRIF.CHN. ML:2.1 0.001255 0.12 AML other m 2019-03-17T21:02:24.04
IV.FROS.CHE. ML:1.6 0.000214 0.92 AML other m 2019-03-17T21:02:27.54
IV.OSSC.HHN. ML:1.2 4.945E-5 0.74 AML other m 2019-03-17T21:02:27.42
IV.FROS.CHN. ML:1.5 0.0001745 0.08 AML other m 2019-03-17T21:02:27.67
IV.CSNT.HHE. ML:1.2 4.84E-5 0.7 AML other m 2019-03-17T21:02:32.42
IV.CSNT.HHN. ML:1.2 4.685E-5 0.54 AML other m 2019-03-17T21:02:32.51
IV.OSSC.HHE. ML:1.2 5.22E-5 0.88 AML other m 2019-03-17T21:02:33.43
IV.PII.HHE. ML:1.4 6.165E-5 1.04 AML other m 2019-03-17T21:02:37.07
IV.PII.HHN. ML:1.3 4.705E-5 0.36 AML other m 2019-03-17T21:02:39.48
IV.CELB.HHN. ML:1.8 0.00010435 1.24 AML other m 2019-03-17T21:02:44.93
IV.CELB.HHE. ML:2.1 0.000181 0.28 AML other m 2019-03-17T21:02:45.05
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