Earthquake with magnitude of ML 0.8 on date 29-11-2018 and time 19:39:52 (UTC) in region 1 km SE Montopoli in Val d'Arno (PI)

A magnitude ML 0.8 earthquake occured in region: 1 km SE Montopoli in Val d'Arno (PI), on

  • 29-11-2018 19:39:52 (UTC)
  • 29-11-2018 20:39:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.66, 10.77 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
Montopoli in Val d'Arno PI 1 11148 11148
Castelfranco di Sotto PI 5 13427 24575
Palaia PI 6 4612 29187
Santa Croce sull'Arno PI 6 14601 43788
San Miniato PI 7 27934 71722
Santa Maria a Monte PI 8 13253 84975
Fucecchio FI 9 23618 108593
Pontedera PI 11 29223 137816
Capannoli PI 11 6381 144197
Ponsacco PI 12 15611 159808
Calcinaia PI 13 12439 172247
Peccioli PI 13 4807 177054
Bientina PI 13 8062 185116
Cerreto Guidi FI 15 10870 195986
Vicopisano PI 16 8559 204545
Empoli FI 16 48109 252654
Terricciola PI 16 4627 257281
Montaione FI 17 3700 260981
Buti PI 17 5791 266772
Castelfiorentino FI 17 17504 284276
Cascina PI 18 45257 329533
Crespina Lorenzana PI 19 5457 334990
Casciana Terme Lari PI 19 12529 347519
Altopascio LU 19 15481 363000
Vinci FI 19 14604 377604
Capraia e Limite FI 19 7670 385274
Gambassi Terme FI 20 4870 390144

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km SE of Lucca (89046 inhabitants)
30 Km E of Pisa (89158 inhabitants)
33 Km SW of Pistoia (90315 inhabitants)
35 Km W of Scandicci (50609 inhabitants)
36 Km SW of Prato (191150 inhabitants)
39 Km E of Livorno (159219 inhabitants)
41 Km W of Firenze (382808 inhabitants)
48 Km E of Viareggio (62467 inhabitants)
59 Km NW of Siena (53903 inhabitants)
66 Km SE of Massa (69479 inhabitants)
71 Km SE of Carrara (63133 inhabitants)
90 Km SE of La Spezia (93959 inhabitants)
92 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 0.8 2018-11-29
19:39:52
43.66 10.77 9 2018-11-29
19:51:02
Sala Sismica INGV-Roma 63478561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-11-29 19:39:52 ± 0.16
Latitude 43.66 ± 0.01
Longitude 10.77 ± 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 63478561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1008
Semi-minor axis of confidence ellipse (meter) 107
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 348
Circular confidence region, given by single value of horizontal uncertainty (meter) 1010
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.42088
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 63478561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-11-29 19:51:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LAV9.HNZ. 2018-11-29T19:41:06.61 3.0 undecidable manual Sg 0.01 0
GU.PZZ.HHZ. 2018-11-29T19:40:48.58 3.0 undecidable manual Pg 10.11 0
IV.BRSN.EHZ. 2018-11-29T19:40:12.88 3.0 positive manual P -3.11 0
IV.MSSA.HHZ. 2018-11-29T19:40:12.04 3.0 undecidable manual P -3.65 0
IV.MTCR.EHZ. 2018-11-29T19:40:07.89 0.6 undecidable manual S 24 0.4065 50 0.15 50
GU.MAIM.HHZ. 2018-11-29T19:40:04.86 0.3 undecidable manual S 322 0.3247 50 -0.46 71
IV.MAGO.HHE. 2018-11-29T19:40:01.00 0.3 undecidable manual P 192 0.3921 50 -0.21 74
IV.MTCR.EHZ. 2018-11-29T19:40:01.71 1.0 negative manual P 24 0.4065 50 0.25 24
IV.CSNT.HHZ. 2018-11-29T19:40:01.36 1.0 negative manual P 116 0.4209 50 -0.33 24
IV.MPPT.EHE. 2018-11-29T19:40:01.28 0.3 undecidable manual P 38 0.3795 50 0.3 73
IV.CRMI.HHZ. 2018-11-29T19:40:01.13 0.3 undecidable manual S 48 0.2059 112 -0.3 75
GU.MAIM.HHZ. 2018-11-29T19:40:00.29 0.1 negative manual P 322 0.3247 50 0.23 100
IV.PII.HHZ. 2018-11-29T19:40:00.58 0.3 undecidable manual S 290 0.1871 114 -0.21 77
IV.CRMI.HHZ. 2018-11-29T19:39:57.86 0.3 undecidable manual P 48 0.2059 112 0.05 79
IV.PII.HHZ. 2018-11-29T19:39:57.77 0.1 negative manual P 290 0.1871 114 0.34 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PII.HHE. ML:1.4 0.000157787825 0.1408 AML other m 2018-11-29T19:40:01.63
IV.PII.HHN. ML:1.1 9.54329E-5 0.1792 AML other m 2018-11-29T19:40:01.69
IV.CRMI.HHE. ML:0.5 1.76810605E-5 0.256 AML other m 2018-11-29T19:40:02.37
IV.CRMI.HHN. ML:0.4 1.5989106E-5 0.2176 AML other m 2018-11-29T19:40:01.79
GU.MAIM.HHE. ML:0.9 2.878554E-5 4.3904 AML other m 2018-11-29T19:40:07.17
GU.MAIM.HHN. ML:0.8 2.2793235E-5 2.3936 AML other m 2018-11-29T19:40:06.99
IV.MTCR.EHN. ML:0.8 2.0215885E-5 1.1904 AML other m 2018-11-29T19:40:09.68
IV.MTCR.EHE. ML:0.7 1.497366E-5 0.2048 AML other m 2018-11-29T19:40:08.51
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