Earthquake with magnitude of ML 1.1 on date 11-08-2018 and time 22:13:00 (Italy) in region 5 km SE Monghidoro (BO)

A magnitude ML 1.1 earthquake occured in region: 5 km SE Monghidoro (BO), on

  • 11-08-2018 20:13:00 (UTC)
  • 11-08-2018 22:13:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.19, 11.35 at 20 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
Monghidoro BO 5 3749 3749
Firenzuola FI 8 4726 8475
Loiano BO 10 4294 12769
San Benedetto Val di Sambro BO 10 4315 17084
Monzuno BO 12 6328 23412
Castel del Rio BO 13 1246 24658
Castiglione dei Pepoli BO 16 5648 30306
Monterenzio BO 16 6035 36341
Grizzana Morandi BO 18 3916 40257
Palazzuolo sul Senio FI 18 1154 41411
Fontanelice BO 19 1943 43354

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km S of Bologna (386663 inhabitants)
35 Km SW of Imola (69797 inhabitants)
39 Km NE of Prato (191150 inhabitants)
44 Km W of Faenza (58541 inhabitants)
44 Km NE of Pistoia (90315 inhabitants)
47 Km N of Firenze (382808 inhabitants)
49 Km N of Scandicci (50609 inhabitants)
55 Km W of Forlì (117913 inhabitants)
61 Km SE of Modena (184973 inhabitants)
72 Km W of Cesena (96758 inhabitants)
73 Km W of Ravenna (159116 inhabitants)
76 Km SW of Ferrara (133155 inhabitants)
76 Km SE of Carpi (70699 inhabitants)
78 Km E of Lucca (89046 inhabitants)
81 Km SE of Reggio nell'Emilia (171345 inhabitants)
91 Km NW of Arezzo (99543 inhabitants)
92 Km NE of Pisa (89158 inhabitants)
95 Km E of Viareggio (62467 inhabitants)
96 Km N of Siena (53903 inhabitants)
98 Km E of Massa (69479 inhabitants)
98 Km W of Rimini (147750 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 1.1 2018-08-11
20:13:00
44.19 11.35 20 2019-04-24
14:50:53
Bollettino Sismico Italiano INGV 59808971
Rev 100 ML 1.0 2018-08-11
20:13:00
44.22 11.34 14 2018-08-11
20:21:45
Sala Sismica INGV-Roma 59647191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-11 20:13:00 ± 0.21
Latitude 44.19 ± 0.01
Longitude 11.35 ± 0.01
Depth (km) 20 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 59808971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 976
Semi-minor axis of confidence ellipse (meter) 941
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 176
Circular confidence region, given by single value of horizontal uncertainty (meter) 980
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 90
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.31296
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1

Field Value
Value 1
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 59647191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-11 20:21:45

ML:1.1

Field Value
Value 1.1
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 59808971
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-08-16 15:40:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LMD.HHZ. 2018-08-11T20:13:11.52 0.3 undecidable manual S 113 0.2788 115 0.2 71
IV.MOCL.EHZ. 2018-08-11T20:13:10.00 0.3 undecidable manual S 214 0.2176 122 0.27 72
IV.SEI.HHZ. 2018-08-11T20:13:08.00 0.3 undecidable manual S 177 0.1322 139 0.22 73
IV.RUFI.EHZ. 2018-08-11T20:13:08.58 3.0 positive manual P 0.27 0
IV.ZCCA.HHZ. 2018-08-11T20:13:07.57 0.1 undecidable manual P 302 0.313 111 0.47 90
IV.MTCR.EHZ. 2018-08-11T20:13:06.87 0.3 undecidable manual P 238 0.295 113 0.07 74
IV.LMD.HHZ. 2018-08-11T20:13:06.40 0.1 undecidable manual P 113 0.2788 115 -0.16 97
IV.MPPT.EHZ. 2018-08-11T20:13:06.77 0.3 undecidable manual P 219 0.2941 113 -0.03 74
IV.MOCL.EHZ. 2018-08-11T20:13:05.51 0.1 undecidable manual P 214 0.2176 122 -0.12 98
IV.FNVD.HHZ. 2018-08-11T20:13:04.40 0.1 undecidable manual P 264 0.1628 132 -0.49 92
IV.SEI.HHZ. 2018-08-11T20:13:04.37 0.1 undecidable manual P 177 0.1322 139 -0.14 100
IV.MTRZ.HNZ. 2018-08-11T20:13:04.49 0.3 undecidable manual P 23 0.1376 137 -0.08 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:1 4.21E-5 0.78 AML other m 2018-08-11T20:13:15.81
IV.SEI.HHN. ML:2 0.0006335 0.42 AML other m 2018-08-11T20:13:09.32
IV.MOCL.EHE. ML:1.1 6.485E-5 0.44 AML other m 2018-08-11T20:13:11.21
IV.MOCL.EHN. ML:1.1 6.11E-5 0.44 AML other m 2018-08-11T20:13:11.58
IV.LMD.HHN. ML:1.1 4.345E-5 0.92 AML other m 2018-08-11T20:13:13.33
IV.MPPT.EHN. ML:0.6 1.744907E-5 0.2688 AML other m 2018-08-11T20:13:12.40
IV.MPPT.EHE. ML:0.7 2.1879475E-5 0.64 AML other m 2018-08-11T20:13:16.03
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