INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.0 on date 11-08-2018 and time 22:13:00 (Italy) in region 2 km E Monghidoro (BO)

A magnitude ML 1.0 earthquake occured in region: 2 km E 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) 44.22, 11.34 at 14 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 2 3749 3749
Loiano BO 6 4294 8043
San Benedetto Val di Sambro BO 8 4315 12358
Monzuno BO 8 6328 18686
Firenzuola FI 12 4726 23412
Monterenzio BO 13 6035 29447
Castel del Rio BO 14 1246 30693
Grizzana Morandi BO 15 3916 34609
Castiglione dei Pepoli BO 17 5648 40257
Marzabotto BO 17 6779 47036
Fontanelice BO 18 1943 48979
Pianoro BO 19 17460 66439
Vergato BO 19 7639 74078

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km S of Bologna (386663 inhabitants)
34 Km W of Imola (69797 inhabitants)
42 Km NE of Prato (191150 inhabitants)
44 Km W of Faenza (58541 inhabitants)
46 Km NE of Pistoia (90315 inhabitants)
50 Km N of Firenze (382808 inhabitants)
53 Km N of Scandicci (50609 inhabitants)
56 Km W of Forlì (117913 inhabitants)
58 Km SE of Modena (184973 inhabitants)
72 Km SE of Carpi (70699 inhabitants)
72 Km W of Ravenna (159116 inhabitants)
72 Km SW of Ferrara (133155 inhabitants)
73 Km W of Cesena (96758 inhabitants)
77 Km SE of Reggio nell'Emilia (171345 inhabitants)
79 Km NE of Lucca (89046 inhabitants)
93 Km NE of Pisa (89158 inhabitants)
94 Km NW of Arezzo (99543 inhabitants)
95 Km E of Viareggio (62467 inhabitants)
97 Km E of Massa (69479 inhabitants)
100 Km W of Rimini (147750 inhabitants)
100 Km N of Siena (53903 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
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 ± 0.15
Latitude 44.22 ± 0.01
Longitude 11.34 ± 0.01
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 59647191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 869
Semi-minor axis of confidence ellipse (meter) 186
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 5
Circular confidence region, given by single value of horizontal uncertainty (meter) 870
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 226
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 11
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
Epicentral distance of station farthest from the epicenter (degree) 0.48204
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude 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
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SFI.EHE. 2018-08-11T20:13:17.00 0.1 undecidable manual S 130 0.482 94 0.16 92
IV.LMD.HHZ. 2018-08-11T20:13:11.53 0.1 undecidable manual S 118 0.3013 99 0.03 98
IV.SFI.EHE. 2018-08-11T20:13:09.72 0.3 undecidable manual P 130 0.482 94 -0.03 70
IV.MOCL.EHZ. 2018-08-11T20:13:09.58 0.3 undecidable manual S 208 0.241 102 -0.18 72
IV.RUFI.EHZ. 2018-08-11T20:13:08.58 3.0 positive manual P 0.27 0
IV.ZCCA.HHZ. 2018-08-11T20:13:07.77 3.0 positive manual P 0.4 0
IV.MTCR.EHZ. 2018-08-11T20:13:07.02 0.3 undecidable manual P 232 0.3067 98 0.27 69
IV.SEI.HHZ. 2018-08-11T20:13:07.77 0.3 undecidable manual S 175 0.1655 113 0.17 72
IV.LMD.HHZ. 2018-08-11T20:13:06.45 0.1 undecidable manual P 118 0.3013 99 -0.21 93
IV.MPPT.EHZ. 2018-08-11T20:13:06.83 0.1 undecidable manual P 214 0.3157 98 -0.08 96
IV.MOCL.EHZ. 2018-08-11T20:13:05.54 0.1 undecidable manual P 208 0.241 102 -0.12 97
IV.SEI.HHZ. 2018-08-11T20:13:04.39 0.1 positive manual P 175 0.1655 113 -0.03 100
IV.FNVD.HHE. 2018-08-11T20:13:04.42 0.3 undecidable manual P 252 0.1619 114 0.06 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SEI.HHN. ML:1.9 0.00063347085 0.4224 AML other m 2018-08-11T20:13:09.32
IV.SEI.HHE. ML:2 0.0007282157 0.4864 AML other m 2018-08-11T20:13:08.22
IV.MOCL.EHE. ML:1 5.3888165E-5 0.192 AML other m 2018-08-11T20:13:10.75
IV.MOCL.EHN. ML:1.1 5.8873345E-5 0.2048 AML other m 2018-08-11T20:13:10.59
IV.LMD.HHN. ML:0.9 3.6901625E-5 0.2048 AML other m 2018-08-11T20:13:11.90
IV.LMD.HHE. ML:1 4.1704025E-5 0.2048 AML other m 2018-08-11T20:13:12.86
IV.MPPT.EHN. ML:0.6 1.744907E-5 0.2688 AML other m 2018-08-11T20:13:12.40
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