Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 30-10-2019 and time 00:18:07 (Italy) in region 5 km NE Marradi (FI)

A magnitude ML 1.5 earthquake occured in region: 5 km NE Marradi (FI), on

  • 29-10-2019 23:18:07 (UTC)
  • 30-10-2019 00:18:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.1190, 11.6380 at 9 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.

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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 5 3139 3139
Palazzuolo sul Senio FI 7 1154 4293
Tredozio FC 10 1212 5505
Casola Valsenio RA 12 2617 8122
Modigliana FC 13 4560 12682
Castel del Rio BO 15 1246 13928
Portico e San Benedetto FC 15 756 14684
Brisighella RA 16 7639 22323
Fontanelice BO 17 1943 24266
Rocca San Casciano FC 18 1910 26176
Borgo Tossignano BO 18 3288 29464
Riolo Terme RA 19 5720 35184
Premilcuore FC 19 799 35983
Casalfiumanese BO 20 3438 39421

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km S of Imola (69797 inhabitants)
27 Km SW of Faenza (58541 inhabitants)
34 Km W of Forlì (117913 inhabitants)
48 Km SE of Bologna (386663 inhabitants)
48 Km W of Cesena (96758 inhabitants)
49 Km NE of Firenze (382808 inhabitants)
51 Km NE of Prato (191150 inhabitants)
54 Km NE of Scandicci (50609 inhabitants)
56 Km SW of Ravenna (159116 inhabitants)
61 Km E of Pistoia (90315 inhabitants)
74 Km W of Rimini (147750 inhabitants)
75 Km N of Arezzo (99543 inhabitants)
80 Km S of Ferrara (133155 inhabitants)
82 Km SE of Modena (184973 inhabitants)
92 Km N of Siena (53903 inhabitants)
95 Km SE of Carpi (70699 inhabitants)
96 Km E of Lucca (89046 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
Bulletin
Rev1000 		ML 1.5 2019-10-29
23:18:07		 44.1187 11.6383 9 2020-02-28
16:42:09		 Bollettino Sismico Italiano INGV 74013511
Reviewed
Rev100 		ML 1.6 2019-10-29
23:18:07		 44.1142 11.639 9 2019-10-29
23:24:39		 Sala Sismica INGV-Roma 73525731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-29 23:18:07 ± 0.06
Latitude 44.1187 ± 0.0036
Longitude 11.6383 ± 0.0063
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 74013511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 417
Semi-minor axis of confidence ellipse (meter) 409
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 59
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.06475
Epicentral distance of station farthest from the epicenter (degree) 0.57377
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 73525731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-29 23:24:39

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 74013511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-11-25 14:19:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASQU.HHZ. 2019-10-29T23:18:21.00 0.3 undecidable manual S 161 37.7289 50 0.38 67
IV.FNVD.HHZ. 2019-10-29T23:18:21.90 0.3 undecidable manual S 278 41.4252 50 0.29 67
IV.MOCL.EHZ. 2019-10-29T23:18:20.90 0.3 undecidable manual S 251 38.628 50 0.04 71
IV.CRMI.HNN. 2019-10-29T23:18:19.75 1.0 undecidable manual P 236 63.6918 50 0.6 20
IV.RUFI.EHZ. 2019-10-29T23:18:19.20 0.3 undecidable manual S 198 32.745 50 -0.1 71
IV.ZCCA.HNN. 2019-10-29T23:18:19.32 1.0 undecidable manual P 296 58.5969 50 0.96 17
IV.IMOL.EHZ. 2019-10-29T23:18:18.70 1.0 undecidable manual S 17 27.9498 108 0.82 19
IV.SFI.EHZ. 2019-10-29T23:18:18.40 0.3 undecidable manual S 145 28.9488 108 0.18 71
IV.MPPT.EHN. 2019-10-29T23:18:16.01 1.0 undecidable manual P 248 47.2194 50 -0.61 20
IV.SEI.HHZ. 2019-10-29T23:18:16.50 0.3 undecidable manual S 252 23.3544 111 0.11 72
IV.MOCL.EHZ. 2019-10-29T23:18:15.14 0.1 undecidable manual P 251 38.628 50 -0.14 93
IV.FNVD.HHZ. 2019-10-29T23:18:15.55 0.1 undecidable manual P 278 41.4252 50 -0.17 92
IV.ASQU.HHZ. 2019-10-29T23:18:14.95 0.1 undecidable manual P 161 37.7289 50 -0.19 92
IV.RUFI.EHZ. 2019-10-29T23:18:14.24 0.1 undecidable manual P 198 32.745 50 -0.15 94
IV.IMOL.EHZ. 2019-10-29T23:18:13.65 0.1 undecidable manual P 17 27.9498 108 0.08 96
IV.BRIS.HNN. 2019-10-29T23:18:13.80 0.3 undecidable manual S 41 15.5733 120 -0.14 73
IV.SFI.EHZ. 2019-10-29T23:18:13.57 0.1 undecidable manual P 145 28.9488 108 -0.19 94
IV.SEI.HHZ. 2019-10-29T23:18:12.56 0.1 positive manual P 252 23.3544 111 -0.15 96
IV.LMD.HHZ. 2019-10-29T23:18:11.90 0.3 undecidable manual S 130 7.1928 142 0.19 73
IV.BRIS.HNN. 2019-10-29T23:18:11.08 0.1 positive manual P 41 15.5733 120 -0.21 96
IV.LMD.HHZ. 2019-10-29T23:18:10.06 0.1 positive manual P 130 7.1928 142 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:0.0 0.0016107735 0.3456 AML other m 2019-10-29T23:18:11.97
IV.LMD.HHN. ML:0.0 0.001165 0.34 AML other m 2019-10-29T23:18:12.15
IV.SFI.EHN. ML:0.0 0.00010575 0.46 AML other m 2019-10-29T23:18:18.90
IV.SFI.EHE. ML:0.0 0.00007830571 0.192 AML other m 2019-10-29T23:18:18.99
IV.IMOL.HNE. ML:0.0 0.000321 0.5 AML other m 2019-10-29T23:18:20.31
IV.IMOL.HNN. ML:0.0 0.0003085 1.02 AML other m 2019-10-29T23:18:20.43
IV.MOCL.EHN. ML:0.0 0.00006395 0.3 AML other m 2019-10-29T23:18:21.69
IV.ASQU.HHE. ML:0.0 0.000077 1.06 AML other m 2019-10-29T23:18:21.07
IV.MOCL.EHE. ML:0.0 0.00005405 1.7 AML other m 2019-10-29T23:18:22.00
IV.FNVD.HHN. ML:1.6 0.000122 0.12 AML other m 2019-10-29T23:18:22.49
IV.ASQU.HHN. ML:0.0 0.0000668 1.38 AML other m 2019-10-29T23:18:22.22
IV.FNVD.HHE. ML:1.5 0.0001017 1.36 AML other m 2019-10-29T23:18:23.69
IV.BRSN.EHN. ML:2.0 0.000321 0.44 AML other m 2019-10-29T23:18:25.63
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download