Earthquake with magnitude of ML 1.0 on date 30-07-2019 and time 15:51:13 (UTC) in region 4 km W Marradi (FI)

A magnitude ML 1.0 earthquake occured in region: 4 km W Marradi (FI), on

  • 30-07-2019 15:51:13 (UTC)
  • 30-07-2019 17:51:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.07, 11.57 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
Marradi FI 4 3139 3139
Palazzuolo sul Senio FI 6 1154 4293
Tredozio FC 14 1212 5505
San Godenzo FI 16 1167 6672
Firenzuola FI 16 4726 11398
Vicchio FI 17 8044 19442
Castel del Rio BO 17 1246 20688
Portico e San Benedetto FC 18 756 21444
Casola Valsenio RA 18 2617 24061
Borgo San Lorenzo FI 19 18211 42272
Premilcuore FC 19 799 43071
Dicomano FI 20 5515 48586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SW of Imola (69797 inhabitants)
35 Km SW of Faenza (58541 inhabitants)
41 Km NE of Firenze (382808 inhabitants)
42 Km W of Forlì (117913 inhabitants)
43 Km E of Prato (191150 inhabitants)
46 Km NE of Scandicci (50609 inhabitants)
51 Km SE of Bologna (386663 inhabitants)
54 Km E of Pistoia (90315 inhabitants)
55 Km W of Cesena (96758 inhabitants)
64 Km SW of Ravenna (159116 inhabitants)
71 Km NW of Arezzo (99543 inhabitants)
80 Km W of Rimini (147750 inhabitants)
82 Km SE of Modena (184973 inhabitants)
85 Km N of Siena (53903 inhabitants)
86 Km S of Ferrara (133155 inhabitants)
89 Km E of Lucca (89046 inhabitants)
96 Km SE of Carpi (70699 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 1.0 2019-07-30
15:51:13
44.07 11.57 9 2019-07-30
15:58:25
Sala Sismica INGV-Roma 71031091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-30 15:51:13 ± 0.14
Latitude 44.07 ± 0.00
Longitude 11.57 ± 0.00
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 71031091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 438
Semi-minor axis of confidence ellipse (meter) 119
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 170
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.25721
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 71031091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-30 15:58:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ACATE.HNZ. 2019-07-30T15:53:04.90 3.0 negative manual Pn 3.93 0
IV.SPS2.HHZ. 2019-07-30T15:53:02.10 3.0 positive manual Pg 21.59 0
AC.VLO.HHZ. 2019-07-30T15:52:58.86 3.0 undecidable manual Pn 7.39 0
IV.CET2.HHZ. 2019-07-30T15:52:56.58 3.0 undecidable manual Pg 21.02 0
IV.ECTS.EHZ. 2019-07-30T15:52:52.90 3.0 positive manual Pn 0.98 0
IT.VNF1.HGZ. 2019-07-30T15:52:48.10 3.0 undecidable manual Sn 1.36 0
IV.IST3.HHZ. 2019-07-30T15:52:44.73 3.0 positive manual Pn 3.97 0
IV.PTRP.HHZ. 2019-07-30T15:52:41.20 3.0 undecidable manual Pg 16.190001 0
IV.VIVA.HHZ. 2019-07-30T15:52:41.62 3.0 undecidable manual Sg 10.42 0
IV.NOCI.HHZ. 2019-07-30T15:52:36.67 3.0 undecidable manual Pn 7.4 0
IV.RMP.HHZ. 2019-07-30T15:52:30.34 3.0 undecidable manual Sn 0.92 0
IT.VNF1.HGZ. 2019-07-30T15:52:06.99 3.0 positive manual Pg 4.66 0
IV.MOMA.HHZ. 2019-07-30T15:51:36.54 3.0 positive manual Pn -2.77 0
IV.SFI.EHZ. 2019-07-30T15:51:24.30 0.3 undecidable manual S 129 0.2572 107 0.23 71
IV.BRIS.HHZ. 2019-07-30T15:51:22.73 0.6 undecidable manual S 42 0.214 110 0.25 47
IV.MNTV.HNZ. 2019-07-30T15:51:21.65 3.0 undecidable manual P -0.58 0
IV.SEI.HHZ. 2019-07-30T15:51:20.33 0.6 undecidable manual S 266 0.1502 117 0.09 50
IV.SFI.EHZ. 2019-07-30T15:51:19.60 0.1 undecidable manual P 129 0.2572 107 -0.09 97
IV.RUFI.EHE. 2019-07-30T15:51:19.06 0.6 undecidable manual P 190 0.2311 109 -0.08 49
IV.SBPO.HNZ. 2019-07-30T15:51:19.23 3.0 positive manual P -0.51 0
IV.BRIS.HHZ. 2019-07-30T15:51:18.71 0.1 undecidable manual P 42 0.214 110 -0.06 99
IV.LMD.HHZ. 2019-07-30T15:51:18.53 0.1 undecidable manual S 83 0.1007 128 -0.1 100
IV.SEI.HHZ. 2019-07-30T15:51:17.50 0.6 undecidable manual P 266 0.1502 117 0.01 50
IV.LMD.HHZ. 2019-07-30T15:51:16.46 0.6 undecidable manual P 83 0.1007 128 -0.09 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHN. ML:1 0.0001145 0.1 AML other m 2019-07-30T15:51:18.65
IV.LMD.HHE. ML:0.8 8.905E-5 0.3 AML other m 2019-07-30T15:51:18.64
IV.SEI.HHE. ML:1.2 0.0001315 0.36 AML other m 2019-07-30T15:51:20.92
IV.SEI.HHN. ML:1.4 0.0002075 0.28 AML other m 2019-07-30T15:51:20.63
IV.BRIS.HHN. ML:1 6.51E-5 0.4 AML other m 2019-07-30T15:51:23.56
IV.SFI.EHE. ML:0.6 2.15E-5 0.96 AML other m 2019-07-30T15:51:24.92
IV.SFI.EHN. ML:0.6 2.07E-5 0.78 AML other m 2019-07-30T15:51:25.78
IV.BRIS.HHE. ML:1.1 7.475E-5 1.48 AML other m 2019-07-30T15:51:25.08
IV.MOMA.HHN. ML:1.9 3.415E-5 1.1 AML other m 2019-07-30T15:51:47.97
IV.MOMA.HHE. ML:2 3.76E-5 0.68 AML other m 2019-07-30T15:51:47.90
IV.RMP.HHE. ML:3.2 0.0002385 0.44 AML other m 2019-07-30T15:52:40.43
IV.RMP.HHN. ML:3.5 0.0004975 0.98 AML other m 2019-07-30T15:52:40.51
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