Earthquake with magnitude of ML 1.4 on date 28-02-2020 and time 02:08:04 (Italy) in region 4 km NE Marradi (FI)

A magnitude ML 1.4 earthquake occured in region: 4 km NE Marradi (FI), on

  • 28-02-2020 01:08:04 (UTC)
  • 28-02-2020 02:08:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.11, 11.64 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.

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 7 1154 4293
Tredozio FC 9 1212 5505
Casola Valsenio RA 13 2617 8122
Modigliana FC 13 4560 12682
Portico e San Benedetto FC 14 756 13438
Castel del Rio BO 16 1246 14684
Brisighella RA 17 7639 22323
Rocca San Casciano FC 17 1910 24233
Premilcuore FC 18 799 25032
Fontanelice BO 18 1943 26975
Borgo Tossignano BO 20 3288 30263
Dovadola FC 20 1653 31916
San Godenzo FI 20 1167 33083

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km SW of Faenza (58541 inhabitants)
28 Km S of Imola (69797 inhabitants)
35 Km W of Forlì (117913 inhabitants)
48 Km W of Cesena (96758 inhabitants)
48 Km NE of Firenze (382808 inhabitants)
49 Km SE of Bologna (386663 inhabitants)
50 Km E of Prato (191150 inhabitants)
53 Km NE of Scandicci (50609 inhabitants)
56 Km SW of Ravenna (159116 inhabitants)
61 Km E of Pistoia (90315 inhabitants)
74 Km N of Arezzo (99543 inhabitants)
74 Km W of Rimini (147750 inhabitants)
81 Km S of Ferrara (133155 inhabitants)
83 Km SE of Modena (184973 inhabitants)
91 Km N of Siena (53903 inhabitants)
96 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
Bulletin
Rev1000
ML 1.4 2020-02-28
01:08:04
44.11 11.64 9 2020-07-18
21:08:25
Bollettino Sismico Italiano INGV 77188971
Reviewed
Rev100
ML 1.5 2020-02-28
01:08:04
44.11 11.65 10 2020-02-28
01:12:41
Sala Sismica INGV-Roma 76880601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-28 01:08:04 ± 0.08
Latitude 44.11 ± 0.00
Longitude 11.64 ± 0.01
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 77188971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 415
Semi-minor axis of confidence ellipse (meter) 304
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 95
Circular confidence region, given by single value of horizontal uncertainty (meter) 420
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.536
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 77188971
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-11 11:09:47

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 76880601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-28 01:12:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CRE.HHZ. 2020-02-28T01:08:23.68 0.3 undecidable manual S 155 0.536 50 0.47 64
IV.ASQU.HHZ. 2020-02-28T01:08:17.05 0.1 undecidable manual S 161 0.3274 50 0.03 98
IV.FAEN.HNZ. 2020-02-28T01:08:16.58 3.0 undecidable manual S 0
IV.IMOL.EHZ. 2020-02-28T01:08:15.48 0.3 undecidable manual S 16 0.2635 107 0.41 68
IT.FAZ.HNZ. 2020-02-28T01:08:15.42 0.3 undecidable manual S 43 0.2626 107 0.39 69
IV.CRE.HHZ. 2020-02-28T01:08:15.32 0.3 undecidable manual P 155 0.536 50 0.04 70
IV.RUFI.EHZ. 2020-02-28T01:08:15.49 0.1 undecidable manual S 199 0.2842 50 -0.26 94
IV.SFI.EHZ. 2020-02-28T01:08:14.54 0.1 undecidable manual S 144 0.25 108 -0.04 99
IV.SEI.HHZ. 2020-02-28T01:08:13.08 0.1 undecidable manual S 256 0.2095 112 -0.02 100
IV.RINC.HHZ. 2020-02-28T01:08:13.99 0.1 undecidable manual S 186 0.2212 110 0.46 91
IV.RONT.HHZ. 2020-02-28T01:08:12.98 0.1 undecidable manual S 233 0.1871 114 0.66 85
IV.IMOL.EHZ. 2020-02-28T01:08:11.06 0.3 undecidable manual P 16 0.2635 107 0.48 67
IV.VISG.HHZ. 2020-02-28T01:08:11.47 0.1 undecidable manual S 299 0.17 116 -0.24 96
IV.ASQU.HHZ. 2020-02-28T01:08:11.46 0.1 positive manual P 161 0.3274 50 -0.25 93
IV.RUFI.EHZ. 2020-02-28T01:08:10.77 0.1 positive manual P 199 0.2842 50 -0.2 95
IV.BRIS.HHZ. 2020-02-28T01:08:10.89 0.1 undecidable manual S 37 0.1484 119 -0.1 100
IT.FAZ.HNZ. 2020-02-28T01:08:10.91 0.3 undecidable manual P 43 0.2626 107 0.36 69
IV.SFI.EHZ. 2020-02-28T01:08:10.02 0.1 positive manual P 144 0.25 108 -0.28 94
IV.FAEN.HNZ. 2020-02-28T01:08:10.65 3.0 undecidable manual P 0
IV.RONT.HHZ. 2020-02-28T01:08:09.16 0.1 positive manual P 233 0.1871 114 0.17 97
IV.SEI.HHZ. 2020-02-28T01:08:09.27 0.1 positive manual P 256 0.2095 112 -0.17 97
IV.RINC.HHZ. 2020-02-28T01:08:09.68 0.1 positive manual P 186 0.2212 110 -0.01 100
IV.VISG.HHZ. 2020-02-28T01:08:08.31 0.1 positive manual P 299 0.17 116 -0.33 95
IV.LMD.HHZ. 2020-02-28T01:08:07.99 0.1 undecidable manual S 121 0.0558 146 -0.28 97
IV.BRIS.HHZ. 2020-02-28T01:08:07.90 0.1 positive manual P 37 0.1484 119 -0.32 95
IV.LMD.HHZ. 2020-02-28T01:08:06.40 0.1 positive manual P 121 0.0558 146 -0.25 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:1.4 0.00039375345 0.28 AML other m 2020-02-28T01:08:08.17
IV.LMD.HHN. ML:1.3 0.000353445525 0.14 AML other m 2020-02-28T01:08:08.06
IV.BRIS.HHE. ML:1.6 0.0003545549 0.3 AML other m 2020-02-28T01:08:11.25
IV.BRIS.HHN. ML:1.9 0.00065935805 0.3 AML other m 2020-02-28T01:08:11.70
IV.VISG.HHN. ML:1.2 0.0001390138 0.12 AML other m 2020-02-28T01:08:11.89
IV.VISG.HHE. ML:1 8.628888E-5 0.32 AML other m 2020-02-28T01:08:11.56
IV.RONT.HHN. ML:1.5 0.0002241401 0.12 AML other m 2020-02-28T01:08:13.50
IV.RONT.HHE. ML:1.4 0.00016877168 0.44 AML other m 2020-02-28T01:08:13.17
IV.SEI.HHN. ML:1.7 0.0003110572 0.32 AML other m 2020-02-28T01:08:13.64
IV.SEI.HHE. ML:1.6 0.0002430428 0.56 AML other m 2020-02-28T01:08:13.69
IV.SFI.EHN. ML:1.2 8.1814035E-5 0.38 AML other m 2020-02-28T01:08:14.76
IV.SFI.EHE. ML:1.1 6.28182575E-5 0.26 AML other m 2020-02-28T01:08:15.50
IV.IMOL.HNE. ML:1.6 0.00020599569 0.3 AML other m 2020-02-28T01:08:17.44
IV.ASQU.HHE. ML:1.2 5.653262E-5 0.24 AML other m 2020-02-28T01:08:17.22
IV.ASQU.HHN. ML:1.1 4.75121E-5 0.2 AML other m 2020-02-28T01:08:18.09
IV.CRE.HHN. ML:1.3 4.194472385E-5 1.6 AML other m 2020-02-28T01:08:24.77
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