Earthquake with magnitude of ML 1.6 on date 30-07-2019 and time 08:10:14 (UTC) in region 4 km W Marradi (FI)

A magnitude ML 1.6 earthquake occured in region: 4 km W Marradi (FI), on

  • 30-07-2019 08:10:14 (UTC)
  • 30-07-2019 10:10:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.07, 11.56 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 5 1154 4293
Tredozio FC 15 1212 5505
Firenzuola FI 16 4726 10231
Castel del Rio BO 16 1246 11477
San Godenzo FI 17 1167 12644
Vicchio FI 17 8044 20688
Casola Valsenio RA 18 2617 23305
Portico e San Benedetto FC 18 756 24061
Borgo San Lorenzo FI 19 18211 42272

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km SW of Imola (69797 inhabitants)
35 Km SW of Faenza (58541 inhabitants)
42 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)
50 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)
72 Km NW of Arezzo (99543 inhabitants)
80 Km W of Rimini (147750 inhabitants)
81 Km SE of Modena (184973 inhabitants)
85 Km S of Ferrara (133155 inhabitants)
86 Km N of Siena (53903 inhabitants)
89 Km E of Lucca (89046 inhabitants)
96 Km SE of Carpi (70699 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 ML 1.6 2019-07-30
08:10:14
44.07 11.56 10 2019-11-13
14:31:04
Bollettino Sismico Italiano INGV 72947441
Rev 100 ML 1.6 2019-07-30
08:10:14
44.07 11.56 10 2019-07-30
08:15:34
Sala Sismica INGV-Roma 71020451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-30 08:10:14 ± 0.05
Latitude 44.07 ± 0.00
Longitude 11.56 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 72947441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 531
Semi-minor axis of confidence ellipse (meter) 222
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 355
Circular confidence region, given by single value of horizontal uncertainty (meter) 530
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.10342
Epicentral distance of station farthest from the epicenter (degree) 0.63042
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 72947441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-01 09:14:38

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 71020451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-30 08:15:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2019-07-30T08:10:26.32 3.0 positive manual P 0.6304 -0.55 0
IV.SFI.EHZ. 2019-07-30T08:10:25.11 0.1 undecidable manual S 129 0.2644 50 0.01 97
IV.MOCL.EHZ. 2019-07-30T08:10:25.48 0.1 undecidable manual S 256 0.2833 50 -0.17 96
IV.CRMI.HHZ. 2019-07-30T08:10:25.23 3.0 undecidable manual P 0.5027 0.55 0
IV.RUFI.EHZ. 2019-07-30T08:10:24.52 0.1 undecidable manual S 189 0.2374 110 0.35 94
IV.BRIS.HHZ. 2019-07-30T08:10:23.39 0.1 undecidable manual S 44 0.2104 112 0.19 94
IV.MPPT.EHN. 2019-07-30T08:10:22.41 1.0 undecidable manual P 251 0.3588 50 0.19 23
IV.SEI.HHZ. 2019-07-30T08:10:21.08 0.1 undecidable manual S 263 0.1484 120 0.05 100
IV.MOCL.EHZ. 2019-07-30T08:10:20.87 0.6 positive manual P 256 0.2833 50 -0.05 49
IV.RUFI.EHZ. 2019-07-30T08:10:20.05 1.0 undecidable manual P 189 0.2374 110 -0.01 24
IV.SFI.EHZ. 2019-07-30T08:10:20.48 0.3 negative manual P 129 0.2644 50 -0.12 72
IV.BRIS.HHZ. 2019-07-30T08:10:19.44 0.3 positive manual P 44 0.2104 112 -0.06 74
IV.LMD.HHZ. 2019-07-30T08:10:19.48 0.1 undecidable manual S 87 0.1034 129 -0.13 97
IV.SEI.HHZ. 2019-07-30T08:10:18.27 0.1 positive manual P 263 0.1484 120 0.02 100
IV.LMD.HHZ. 2019-07-30T08:10:17.38 0.1 negative manual P 87 0.1034 129 -0.05 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:1.6 0.0004835 0.28 AML other m 2019-07-30T08:10:19.55
IV.LMD.HHN. ML:1.8 0.000779 0.12 AML other m 2019-07-30T08:10:19.54
IV.SEI.HHE. ML:2.1 0.001125 0.5 AML other m 2019-07-30T08:10:21.27
IV.SEI.HHN. ML:2 0.001005 0.7 AML other m 2019-07-30T08:10:21.64
IV.SFI.EHE. ML:1.4 0.00013135 0.36 AML other m 2019-07-30T08:10:25.85
IV.SFI.EHN. ML:1.4 0.0001395 0.76 AML other m 2019-07-30T08:10:26.63
IV.MOCL.EHN. ML:1.4 0.00011425 0.62 AML other m 2019-07-30T08:10:26.79
IV.MOCL.EHE. ML:1.5 0.0001445 1.84 AML other m 2019-07-30T08:10:27.02
IV.BRIS.HHN. ML:1.6 0.0002497297 0.3392 AML other m 2019-07-30T08:10:23.67
IV.BRIS.HHE. ML:1.7 0.0002992703 0.4224 AML other m 2019-07-30T08:10:23.78
IV.RUFI.EHN. ML:0.8 3.25372325E-5 0.2048 AML other m 2019-07-30T08:10:25.26
IV.RUFI.EHE. ML:1.2 7.9831705E-5 0.4032 AML other m 2019-07-30T08:10:24.78
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