Earthquake with magnitude of ML 1.2 on date 05-05-2018 and time 01:55:19 (Italy) in region 4 km SW Tredozio (FC)

A magnitude ML 1.2 earthquake occured in region: 4 km SW Tredozio (FC), on

  • 04-05-2018 23:55:19 (UTC)
  • 05-05-2018 01:55:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.05, 11.73 at 3 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
Tredozio FC 4 1212 1212
Portico e San Benedetto FC 5 756 1968
Premilcuore FC 9 799 2767
Rocca San Casciano FC 9 1910 4677
Marradi FI 10 3139 7816
Modigliana FC 13 4560 12376
Dovadola FC 15 1653 14029
Galeata FC 16 2516 16545
Palazzuolo sul Senio FI 16 1154 17699
San Godenzo FI 16 1167 18866
Civitella di Romagna FC 18 3786 22652
Santa Sofia FC 18 4136 26788
Brisighella RA 20 7639 34427

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SW of Faenza (58541 inhabitants)
32 Km SW of Forlì (117913 inhabitants)
34 Km S of Imola (69797 inhabitants)
42 Km W of Cesena (96758 inhabitants)
49 Km NE of Firenze (382808 inhabitants)
54 Km E of Prato (191150 inhabitants)
54 Km NE of Scandicci (50609 inhabitants)
56 Km SW of Ravenna (159116 inhabitants)
58 Km SE of Bologna (386663 inhabitants)
66 Km N of Arezzo (99543 inhabitants)
66 Km E of Pistoia (90315 inhabitants)
67 Km W of Rimini (147750 inhabitants)
87 Km NE of Siena (53903 inhabitants)
88 Km S of Ferrara (133155 inhabitants)
92 Km SE of Modena (184973 inhabitants)
96 Km W of Pesaro (94582 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 1.2 2018-05-04
23:55:19
44.05 11.73 3 2019-04-24
14:51:10
Bollettino Sismico Italiano INGV 66299301
Rev 100 ML 1.2 2018-05-04
23:55:19
44.05 11.73 3 2018-05-05
00:02:19
Sala Sismica INGV-Roma 56495571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-05-04 23:55:19 ± 0.18
Latitude 44.05 ± 0.01
Longitude 11.73 ± 0.01
Depth (km) 3 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 66299301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 890
Semi-minor axis of confidence ellipse (meter) 255
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 81
Circular confidence region, given by single value of horizontal uncertainty (meter) 890
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.03238
Epicentral distance of station farthest from the epicenter (degree) 0.34174
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 66299301
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-03-08 15:37:16

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 56495571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-05-05 00:02:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SEI.HHZ. 2018-05-04T23:55:30.09 0.3 undecidable manual S 271 0.2653 96 0.13 71
IV.RUFI.EHZ. 2018-05-04T23:55:30.45 0.3 undecidable manual S 217 0.2626 96 0.59 63
IV.ASQU.HHZ. 2018-05-04T23:55:29.68 0.3 undecidable manual S 170 0.2554 97 0.09 71
IV.MTRZ.HNZ. 2018-05-04T23:55:28.00 0.3 undecidable manual P 321 0.3417 95 0.68 60
IV.SFI.EHZ. 2018-05-04T23:55:26.59 0.3 undecidable manual S 149 0.1673 100 0.37 69
IV.FAEN.HNZ. 2018-05-04T23:55:26.33 0.3 undecidable manual P 24 0.2635 96 0.74 59
IV.BRIS.HHZ. 2018-05-04T23:55:26.72 0.3 undecidable manual S 9 0.1781 99 0.08 73
IV.SEI.HHZ. 2018-05-04T23:55:25.15 0.1 undecidable manual P 271 0.2653 96 -0.47 88
IV.RUFI.EHZ. 2018-05-04T23:55:25.35 0.1 positive manual P 217 0.2626 96 -0.21 93
IV.ASQU.HHZ. 2018-05-04T23:55:25.04 0.1 undecidable manual P 170 0.2554 97 -0.37 90
IV.BRIS.HHZ. 2018-05-04T23:55:23.27 0.1 undecidable manual P 9 0.1781 99 -0.43 90
IV.SFI.EHZ. 2018-05-04T23:55:23.28 0.1 undecidable manual P 149 0.1673 100 -0.18 95
IV.LMD.HHZ. 2018-05-04T23:55:21.44 0.1 undecidable manual S 333 0.0324 132 0.06 100
IV.LMD.HHZ. 2018-05-04T23:55:20.45 0.1 undecidable manual P 333 0.0324 132 -0.21 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHN. ML:0 0.0026023 0.1536 AML other m 2018-05-04T23:55:21.59
IV.LMD.HHE. ML:0 0.002089048 0.0768 AML other m 2018-05-04T23:55:21.64
IV.BRIS.HHN. ML:1.4 0.00021096175 1.8976 AML other m 2018-05-04T23:55:26.96
IV.BRIS.HHE. ML:1.3 0.0001667383 0.0896 AML other m 2018-05-04T23:55:27.21
IV.SFI.EHE. ML:1.1 0.00012739185 0.1152 AML other m 2018-05-04T23:55:27.37
IV.SFI.HNN. ML:1 0.000101786975 0.1024 AML other m 2018-05-04T23:55:27.40
IV.SFI.EHN. ML:1.1 0.00011755188 0.1152 AML other m 2018-05-04T23:55:27.40
IV.SFI.HNE. ML:1.2 0.000141771305 0.3584 AML other m 2018-05-04T23:55:27.64
IV.BRIS.HNE. ML:1.3 0.000163820725 0.2432 AML other m 2018-05-04T23:55:27.99
IV.ASQU.HHE. ML:1.5 0.0001835309 0.2816 AML other m 2018-05-04T23:55:30.28
IV.RUFI.EHN. ML:0.7 2.647244E-5 0.32 AML other m 2018-05-04T23:55:30.62
IV.ASQU.HHN. ML:1 5.973281E-5 0.256 AML other m 2018-05-04T23:55:31.28
IV.SEI.HHE. ML:1.2 8.2300135E-5 1.7824 AML other m 2018-05-04T23:55:31.04
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