Earthquake with magnitude of ML 0.8 on date 08-09-2018 and time 01:04:33 (Italy) in region 6 km SE Firenzuola (FI)

A magnitude ML 0.8 earthquake occured in region: 6 km SE Firenzuola (FI), on

  • 07-09-2018 23:04:33 (UTC)
  • 08-09-2018 01:04:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.07, 11.4 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
Firenzuola FI 6 4726 4726
Palazzuolo sul Senio FI 12 1154 5880
Borgo San Lorenzo FI 13 18211 24091
Scarperia e San Piero FI 14 12217 36308
Barberino di Mugello FI 15 10836 47144
Vicchio FI 16 8044 55188
Marradi FI 17 3139 58327
Castel del Rio BO 18 1246 59573
Monghidoro BO 18 3749 63322
Vernio PO 20 6060 69382

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NE of Prato (191150 inhabitants)
36 Km NE of Firenze (382808 inhabitants)
39 Km NE of Scandicci (50609 inhabitants)
40 Km SW of Imola (69797 inhabitants)
42 Km E of Pistoia (90315 inhabitants)
45 Km SW of Faenza (58541 inhabitants)
48 Km S of Bologna (386663 inhabitants)
54 Km W of Forlì (117913 inhabitants)
67 Km W of Cesena (96758 inhabitants)
74 Km SW of Ravenna (159116 inhabitants)
75 Km SE of Modena (184973 inhabitants)
77 Km E of Lucca (89046 inhabitants)
77 Km NW of Arezzo (99543 inhabitants)
84 Km N of Siena (53903 inhabitants)
87 Km S of Ferrara (133155 inhabitants)
89 Km SE of Carpi (70699 inhabitants)
90 Km E of Pisa (89158 inhabitants)
93 Km W of Rimini (147750 inhabitants)
93 Km SE of Reggio nell'Emilia (171345 inhabitants)
95 Km E 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 0.8 2018-09-07
23:04:33
44.07 11.41 10 2018-09-07
23:28:32
Sala Sismica INGV-Roma 60676871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-07 23:04:33 ± 0.11
Latitude 44.07 ± 0.01
Longitude 11.41 ± 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 60676871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 880
Semi-minor axis of confidence ellipse (meter) 291
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 8
Circular confidence region, given by single value of horizontal uncertainty (meter) 880
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41189
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.6
Num. used stations 16
Type of magnitude ML
Reference to an origin 60676871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-07 23:28:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PE3.EHZ. 2018-09-07T23:05:03.01 3.0 undecidable manual S -3.57 0
IV.COR1.EHZ. 2018-09-07T23:04:59.68 3.0 positive manual P 0.91 0
IV.MTCR.EHZ. 2018-09-07T23:04:44.74 0.1 undecidable manual S 262 0.2923 50 -0.36 90
IV.RUFI.EHZ. 2018-09-07T23:04:43.53 0.1 undecidable manual S 162 0.2446 109 -0.06 96
IV.MPPT.EHZ. 2018-09-07T23:04:43.76 0.1 undecidable manual S 244 0.2527 109 -0.14 95
IV.CRMI.HHN. 2018-09-07T23:04:43.48 0.3 undecidable manual P 228 0.4119 50 1.19 45
IV.FNVD.HHE. 2018-09-07T23:04:42.47 0.1 undecidable manual S 296 0.2248 111 -0.4 88
IV.LMD.HHZ. 2018-09-07T23:04:42.46 0.1 undecidable manual S 88 0.2167 111 -0.14 94
IV.ASQU.HHE. 2018-09-07T23:04:41.63 0.1 undecidable manual P 135 0.3894 50 -0.27 90
IV.MOCL.EHZ. 2018-09-07T23:04:41.22 0.1 undecidable manual S 248 0.1745 116 0.14 96
IV.MTCR.EHZ. 2018-09-07T23:04:40.17 0.1 undecidable manual P 262 0.2923 50 -0.08 95
IV.MTRZ.HHE. 2018-09-07T23:04:40.32 0.1 undecidable manual P 3 0.2419 109 0.99 72
IV.RUFI.EHZ. 2018-09-07T23:04:39.43 0.1 undecidable manual P 162 0.2446 109 0.06 95
IV.BRIS.HNZ. 2018-09-07T23:04:39.96 1.0 undecidable manual P 59 0.3013 50 -0.44 22
IV.MPPT.EHZ. 2018-09-07T23:04:39.58 0.1 undecidable manual P 244 0.2527 109 0.02 95
IV.MOCL.EHZ. 2018-09-07T23:04:38.15 0.1 undecidable manual P 248 0.1745 116 0.22 94
IV.FNVD.HHE. 2018-09-07T23:04:38.75 0.1 undecidable manual P 296 0.2248 111 -0.21 92
IV.LMD.HHZ. 2018-09-07T23:04:38.56 0.1 undecidable manual P 88 0.2167 111 -0.24 92
IV.SEI.HHZ. 2018-09-07T23:04:37.26 0.1 undecidable manual S 244 0.0378 156 0.06 100
IV.SEI.HHZ. 2018-09-07T23:04:35.85 0.1 undecidable manual P 244 0.0378 156 0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SEI.HHE. ML:1.4 0.0004812348 0.2432 AML other m 2018-09-07T23:04:37.86
IV.SEI.HHN. ML:1.8 0.0012786865 0.2176 AML other m 2018-09-07T23:04:37.63
IV.MOCL.EHE. ML:1 8.0219255E-5 0.1536 AML other m 2018-09-07T23:04:42.16
IV.MOCL.EHN. ML:0.8 5.395802E-5 0.256 AML other m 2018-09-07T23:04:44.98
IV.LMD.HHN. ML:0.6 2.403633E-5 0.1024 AML other m 2018-09-07T23:04:43.05
IV.LMD.HHE. ML:0.5 1.922128E-5 0.1408 AML other m 2018-09-07T23:04:43.80
IV.RUFI.EHE. ML:0.4 1.743158E-5 1.1776 AML other m 2018-09-07T23:04:40.49
IV.RUFI.EHN. ML:0.7 2.5241476E-5 1.536 AML other m 2018-09-07T23:04:41.44
IV.MPPT.EHN. ML:0.3 1.01510275E-5 0.192 AML other m 2018-09-07T23:04:44.41
IV.MPPT.EHE. ML:0.3 1.14437435E-5 0.32 AML other m 2018-09-07T23:04:45.60
IV.MTCR.EHN. ML:0.5 1.6196773E-5 0.6912 AML other m 2018-09-07T23:04:48.74
IV.MTCR.EHE. ML:0.5 1.6943619E-5 0.1152 AML other m 2018-09-07T23:04:45.57
IV.COR1.HNN. ML:3.3 0.0012141865 0.8704 AML other m 2018-09-07T23:05:19.50
IV.COR1.EHN. ML:2.8 0.00037410965 0.0896 AML other m 2018-09-07T23:05:11.32
IV.COR1.HNE. ML:3.2 0.0010184421 0.9216 AML other m 2018-09-07T23:05:33.54
IV.COR1.EHE. ML:2.5 0.00020417035 0.1792 AML other m 2018-09-07T23:05:11.48
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