INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.3 on date 14-05-2018 and time 22:32:48 (Italy) in region 6 km NE Firenzuola (FI)

A magnitude ML 1.3 earthquake occured in region: 6 km NE Firenzuola (FI), on

  • 14-05-2018 20:32:48 (UTC)
  • 14-05-2018 22:32:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.16, 11.43 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
Firenzuola FI 6 4726 4726
Castel del Rio BO 9 1246 5972
Palazzuolo sul Senio FI 10 1154 7126
Monghidoro BO 12 3749 10875
Fontanelice BO 15 1943 12818
Loiano BO 16 4294 17112
Marradi FI 17 3139 20251
Casola Valsenio RA 17 2617 22868
San Benedetto Val di Sambro BO 17 4315 27183
Borgo Tossignano BO 18 3288 30471
Monzuno BO 19 6328 36799
Monterenzio BO 19 6035 42834

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km SW of Imola (69797 inhabitants)
38 Km S of Bologna (386663 inhabitants)
39 Km W of Faenza (58541 inhabitants)
41 Km NE of Prato (191150 inhabitants)
45 Km NE of Firenze (382808 inhabitants)
48 Km NE of Pistoia (90315 inhabitants)
49 Km NE of Scandicci (50609 inhabitants)
49 Km W of Forlì (117913 inhabitants)
65 Km W of Cesena (96758 inhabitants)
68 Km W of Ravenna (159116 inhabitants)
68 Km SE of Modena (184973 inhabitants)
77 Km S of Ferrara (133155 inhabitants)
82 Km E of Lucca (89046 inhabitants)
82 Km SE of Carpi (70699 inhabitants)
85 Km NW of Arezzo (99543 inhabitants)
88 Km SE of Reggio nell'Emilia (171345 inhabitants)
91 Km W of Rimini (147750 inhabitants)
93 Km N of Siena (53903 inhabitants)
96 Km NE of Pisa (89158 inhabitants)
100 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 1.3 2018-05-14
20:32:48
44.16 11.43 9 2018-05-14
20:39:05
Sala Sismica INGV-Roma 56875041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-05-14 20:32:48 ± 0.1
Latitude 44.16 ± 0.01
Longitude 11.43 ± 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 56875041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 597
Semi-minor axis of confidence ellipse (meter) 483
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 357
Circular confidence region, given by single value of horizontal uncertainty (meter) 600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 15
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) 0.38851
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 56875041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-05-14 20:39:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2018-05-14T20:33:09.34 3.0 undecidable manual S -3.44 0
IV.ASQU.HHZ. 2018-05-14T20:33:04.81 0.3 undecidable manual S 100
IV.SFI.EHZ. 2018-05-14T20:33:02.99 0.3 undecidable manual S 130 0.3885 50 0.41 68
IV.MTCR.EHZ. 2018-05-14T20:33:00.95 0.6 undecidable manual S 248 0.3354 50 -0.06 49
IV.BRIS.HHZ. 2018-05-14T20:32:58.30 0.6 undecidable manual S 74 0.2473 108 0.21 48
IV.MOCL.EHZ. 2018-05-14T20:32:58.11 0.6 undecidable manual S 230 0.2365 108 0.41 47
IV.FNVD.HHZ. 2018-05-14T20:32:57.31 0.6 undecidable manual S 273 0.2239 109 0.1 50
IV.SFI.EHZ. 2018-05-14T20:32:56.33 1.0 undecidable manual P 130 0.3885 50 -0.13 24
IV.LMD.HHZ. 2018-05-14T20:32:56.96 0.6 undecidable manual S 112 0.2113 110 0.2 49
IV.MTRZ.HHZ. 2018-05-14T20:32:55.34 0.3 undecidable manual S 357 0.1565 117 0.51 69
IV.MTCR.EHZ. 2018-05-14T20:32:55.31 0.6 undecidable manual P 248 0.3354 50 -0.24 47
IV.MOCL.EHZ. 2018-05-14T20:32:53.70 0.1 undecidable manual P 230 0.2365 108 0.07 100
IV.BRIS.HHZ. 2018-05-14T20:32:53.57 0.6 undecidable manual P 74 0.2473 108 -0.29 48
IV.FNVD.HHZ. 2018-05-14T20:32:53.16 0.1 undecidable manual P 273 0.2239 109 -0.2 98
IV.LMD.HHZ. 2018-05-14T20:32:52.65 0.1 undecidable manual P 112 0.2113 110 -0.44 93
IV.MTRZ.HHZ. 2018-05-14T20:32:51.73 0.1 undecidable manual P 357 0.1565 117 -0.25 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRZ.HNE. ML:1.6 0.000378 0.4 AML other m 2018-05-14T20:32:55.64
IV.MTRZ.HHN. ML:1.6 0.0003505 1.42 AML other m 2018-05-14T20:32:56.82
IV.MTRZ.HNN. ML:1.6 0.0003305 1.42 AML other m 2018-05-14T20:32:56.82
IV.MTRZ.HHE. ML:1.6 0.000388 0.28 AML other m 2018-05-14T20:32:55.64
IV.LMD.HHN. ML:0.7 2.947688E-5 0.1792 AML other m 2018-05-14T20:32:58.30
IV.LMD.HHE. ML:0.7 2.76295E-5 0.192 AML other m 2018-05-14T20:32:58.59
IV.BRIS.HHN. ML:1 5.542804E-5 0.384 AML other m 2018-05-14T20:33:01.37
IV.BRIS.HHE. ML:1 5.2489785E-5 0.576 AML other m 2018-05-14T20:33:02.32
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