Earthquake with magnitude of ML 1.8 on date 14-09-2019 and time 02:45:23 (Italy) in region Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa)

A magnitude ML 1.8 earthquake occured in region: Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa), on

  • 14-09-2019 00:45:23 (UTC)
  • 14-09-2019 02:45:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.73, 10.25 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
Pisa PI 12 89158 89158
Vecchiano PI 13 12189 101347
Viareggio LU 16 62467 163814
San Giuliano Terme PI 16 31399 195213
Massarosa LU 17 22471 217684
Livorno LI 20 159219 376903

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km W of Pisa (89158 inhabitants)
16 Km S of Viareggio (62467 inhabitants)
20 Km N of Livorno (159219 inhabitants)
24 Km SW of Lucca (89046 inhabitants)
36 Km S of Massa (69479 inhabitants)
41 Km SE of Carrara (63133 inhabitants)
54 Km SE of La Spezia (93959 inhabitants)
58 Km W of Pistoia (90315 inhabitants)
70 Km W of Prato (191150 inhabitants)
75 Km W of Scandicci (50609 inhabitants)
81 Km W of Firenze (382808 inhabitants)
98 Km W of Siena (53903 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 1.8 2019-09-14
00:45:23
43.73 10.25 10 2019-09-14
00:57:03
Sala Sismica INGV-Roma 72379641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-14 00:45:23 ± 0.44
Latitude 43.73 ± 0.03
Longitude 10.25 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72379641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3150
Semi-minor axis of confidence ellipse (meter) 1120
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 25
Circular confidence region, given by single value of horizontal uncertainty (meter) 3150
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 227
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 10
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) 0.77522
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 13
Type of magnitude ML
Reference to an origin 72379641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-14 00:57:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SPS2.HHZ. 2019-09-14T00:47:20.31 3.0 positive manual Pg 21.27 0
IV.PTRJ.HHZ. 2019-09-14T00:47:12.99 3.0 undecidable manual Sn 0.47 0
GU.BLANC.HHZ. 2019-09-14T00:47:02.22 3.0 undecidable manual Sg 7.02 0
IV.MCRV.HHZ. 2019-09-14T00:46:42.58 3.0 undecidable manual Pg 6.74 0
GU.TRAV.HHZ. 2019-09-14T00:46:02.75 3.0 undecidable manual Pn -4.19 0
IV.MURB.HHZ. 2019-09-14T00:45:57.16 3.0 positive manual Pg 2.64 0
IV.FIR.HHZ. 2019-09-14T00:45:48.69 3.0 undecidable manual S -0.07 0
GU.GRAM.HHZ. 2019-09-14T00:45:38.93 0.1 undecidable manual P 350 0.7752 50 0.43 83
IV.PLMA.HHZ. 2019-09-14T00:45:38.58 0.3 undecidable manual S 318 0.4317 50 -0.58 64
GU.GSCL.HHZ. 2019-09-14T00:45:37.63 0.3 undecidable manual P 21 0.6682 50 0.96 52
GU.CARD.HHZ. 2019-09-14T00:45:36.25 0.6 undecidable manual S 29 0.3417 50 -0.25 47
GU.POPM.HHZ. 2019-09-14T00:45:33.69 0.3 undecidable manual P 49 0.4829 50 0.19 69
IV.PLMA.HHZ. 2019-09-14T00:45:32.70 0.6 undecidable manual P 318 0.4317 50 0.08 48
IV.BDI.HHZ. 2019-09-14T00:45:32.46 0.6 undecidable manual P 36 0.4173 50 0.09 48
IV.PII.HHZ. 2019-09-14T00:45:31.76 0.6 undecidable manual S 91 0.197 115 -0.27 48
GU.CARD.HHZ. 2019-09-14T00:45:30.69 0.1 undecidable manual P 29 0.3417 50 -0.39 91
IV.PII.HHZ. 2019-09-14T00:45:28.41 0.1 undecidable manual P 91 0.197 115 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PII.HHN. ML:1.8 0.0003955 1.62 AML other m 2019-09-14T00:45:32.17
IV.PII.HHE. ML:1.6 0.000273 0.26 AML other m 2019-09-14T00:45:32.18
GU.CARD.HHN. ML:2 0.000389 0.32 AML other m 2019-09-14T00:45:36.92
IV.BDI.HHN. ML:1.6 0.00011965 0.34 AML other m 2019-09-14T00:45:39.43
IV.BDI.HNN. ML:1.8 0.0001785 0.94 AML other m 2019-09-14T00:45:41.63
GU.CARD.HHE. ML:1.9 0.0002975 0.12 AML other m 2019-09-14T00:45:41.54
GU.POPM.HHN. ML:1.8 0.0001595 0.66 AML other m 2019-09-14T00:45:42.79
IV.BDI.HHE. ML:1.7 0.000152 0.14 AML other m 2019-09-14T00:45:43.29
GU.POPM.HHE. ML:1.8 0.000154 1.24 AML other m 2019-09-14T00:45:44.79
GU.GSCL.HHE. ML:1.9 0.00011495 0.42 AML other m 2019-09-14T00:45:49.31
GU.GSCL.HHN. ML:1.8 9.06E-5 1.42 AML other m 2019-09-14T00:45:50.86
GU.GRAM.HHN. ML:1.8 8.28E-5 1.1 AML other m 2019-09-14T00:45:53.66
GU.GRAM.HHE. ML:1.9 8.865E-5 0.32 AML other m 2019-09-14T00:45:53.30
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