Earthquake with magnitude of ML 1.3 on date 20-04-2019 and time 22:32:01 (Italy) in region 5 km S Firenzuola (FI)

A magnitude ML 1.3 earthquake occured in region: 5 km S Firenzuola (FI), on

  • 20-04-2019 20:32:01 (UTC)
  • 20-04-2019 22:32:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.07, 11.37 at 8 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 5 4726 4726
Scarperia e San Piero FI 13 12217 16943
Borgo San Lorenzo FI 13 18211 35154
Barberino di Mugello FI 13 10836 45990
Palazzuolo sul Senio FI 15 1154 47144
Monghidoro BO 17 3749 50893
Vicchio FI 17 8044 58937
Vernio PO 18 6060 64997
Castel del Rio BO 19 1246 66243
Castiglione dei Pepoli BO 19 5648 71891
Marradi FI 19 3139 75030
San Benedetto Val di Sambro BO 19 4315 79345
Vaglia FI 20 5073 84418

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NE of Prato (191150 inhabitants)
35 Km N of Firenze (382808 inhabitants)
38 Km NE of Scandicci (50609 inhabitants)
40 Km E of Pistoia (90315 inhabitants)
41 Km SW of Imola (69797 inhabitants)
47 Km S of Bologna (386663 inhabitants)
47 Km SW of Faenza (58541 inhabitants)
56 Km W of Forlì (117913 inhabitants)
70 Km W of Cesena (96758 inhabitants)
73 Km SE of Modena (184973 inhabitants)
74 Km E of Lucca (89046 inhabitants)
76 Km SW of Ravenna (159116 inhabitants)
79 Km NW of Arezzo (99543 inhabitants)
84 Km N of Siena (53903 inhabitants)
87 Km S of Ferrara (133155 inhabitants)
87 Km E of Pisa (89158 inhabitants)
88 Km SE of Carpi (70699 inhabitants)
91 Km SE of Reggio nell'Emilia (171345 inhabitants)
93 Km E of Viareggio (62467 inhabitants)
95 Km W of Rimini (147750 inhabitants)
99 Km E of Massa (69479 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 2019-04-20
20:32:01
44.07 11.37 8 2019-04-20
20:40:27
Sala Sismica INGV-Roma 67796591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-20 20:32:01 ± 0.1
Latitude 44.07 ± 0.01
Longitude 11.37 ± 0.01
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 67796591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 663
Semi-minor axis of confidence ellipse (meter) 254
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 3
Circular confidence region, given by single value of horizontal uncertainty (meter) 660
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.40739
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 67796591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-20 20:40:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LAV9.HHZ. 2019-04-20T20:33:26.39 3.0 undecidable manual Sg 7.35 0
IV.TOLF.HHZ. 2019-04-20T20:33:06.88 3.0 undecidable manual Sg 0.23 0
IT.LRNO.HNZ. 2019-04-20T20:33:05.06 3.0 negative manual Pg 9.92 0
IV.ZONE.HHZ. 2019-04-20T20:33:00.19 3.0 undecidable manual Sg 3.03 0
IV.RIBO.EHZ.01 2019-04-20T20:32:41.48 3.0 undecidable manual S -3.54 0
IV.TOLF.HHZ. 2019-04-20T20:32:40.29 3.0 undecidable manual Pg 3.1 0
IV.MOMA.HHZ. 2019-04-20T20:32:31.20 3.0 positive manual P 1.73 0
IV.NDIM.HHZ. 2019-04-20T20:32:25.39 3.0 undecidable manual S -3.47 0
IV.RUFI.EHZ. 2019-04-20T20:32:11.63 0.6 undecidable manual S 157 0.2554 107 0.39 47
IV.MTCR.EHZ. 2019-04-20T20:32:11.43 0.6 undecidable manual S 260 0.2707 106 -0.4 47
IV.LMD.HHZ. 2019-04-20T20:32:10.89 0.6 undecidable manual S 89 0.2392 108 0.22 49
IV.SFI.EHZ. 2019-04-20T20:32:09.10 0.3 negative manual P 116 0.3795 50 -0.16 73
IV.ASQU.HHZ. 2019-04-20T20:32:09.61 0.3 undecidable manual P 133 0.4074 50 -0.12 73
IV.FNVD.HHE. 2019-04-20T20:32:09.65 0.6 undecidable manual S 298 0.2032 110 0.3 49
IV.MTRZ.HHE. 2019-04-20T20:32:07.04 0.1 undecidable manual P 9 0.2419 107 0.41 94
IV.RUFI.EHZ. 2019-04-20T20:32:07.06 0.3 undecidable manual P 157 0.2554 107 0.15 75
IV.MOCL.EHZ. 2019-04-20T20:32:07.87 0.6 undecidable manual S 244 0.1547 116 0.23 50
IV.MTCR.EHZ. 2019-04-20T20:32:07.14 0.1 negative manual P 260 0.2707 106 -0.11 100
IV.LMD.HHZ. 2019-04-20T20:32:06.25 0.1 undecidable manual P 89 0.2392 108 -0.33 96
IV.MPPT.EHE. 2019-04-20T20:32:06.64 0.1 undecidable manual P 240 0.2347 108 0.16 100
IV.MOCL.EHZ. 2019-04-20T20:32:05.14 0.3 positive manual P 244 0.1547 116 0.31 74
IV.FNVD.HHE. 2019-04-20T20:32:05.53 0.1 undecidable manual P 298 0.2032 110 -0.29 98
IV.SEI.HHZ. 2019-04-20T20:32:03.80 0.3 undecidable manual S 210 0.0225 163 -0.24 77
IV.SEI.HHZ. 2019-04-20T20:32:02.59 0.3 undecidable manual P 210 0.0225 163 -0.16 78
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SEI.HHE. ML:0 0.002046 0.26 AML other m 2019-04-20T20:32:03.92
IV.SEI.HHN. ML:0 0.002075 0.3 AML other m 2019-04-20T20:32:05.33
IV.MOCL.EHE. ML:1.8 0.0005825 1.72 AML other m 2019-04-20T20:32:08.97
IV.MOCL.EHN. ML:1.7 0.0004785 0.3 AML other m 2019-04-20T20:32:08.26
IV.MTCR.EHN. ML:1.3 9.445E-5 0.22 AML other m 2019-04-20T20:32:11.59
IV.MTCR.EHE. ML:1.5 0.000139 0.22 AML other m 2019-04-20T20:32:11.58
IV.LMD.HHE. ML:0.8 4.11E-5 0.34 AML other m 2019-04-20T20:32:11.79
IV.LMD.HHN. ML:1 4.825E-5 0.36 AML other m 2019-04-20T20:32:13.51
IV.SFI.EHE. ML:1.2 4.92E-5 1.58 AML other m 2019-04-20T20:32:16.14
IV.ASQU.HHN. ML:1.1 4.125E-5 0.22 AML other m 2019-04-20T20:32:16.90
IV.ASQU.HHE. ML:1.3 6.665E-5 1.74 AML other m 2019-04-20T20:32:16.03
IV.SFI.EHN. ML:1.2 4.76E-5 1.32 AML other m 2019-04-20T20:32:18.02
IV.MOMA.HHN. ML:1.8 2.56E-5 1.28 AML other m 2019-04-20T20:32:30.26
IV.MOMA.HHE. ML:1.8 2.685E-5 0.06 AML other m 2019-04-20T20:32:31.53
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