Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 17-08-2020 and time 19:01:13 (UTC) in region 6 km SW Ozzano dell'Emilia (BO)

A magnitude ML 1.6 earthquake occured in region: 6 km SW Ozzano dell'Emilia (BO), on

  • 17-08-2020 19:01:13 (UTC)
  • 17-08-2020 21:01:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.4030, 11.4330 at 28 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
Ozzano dell'Emilia BO 6 13596 13596
Pianoro BO 7 17460 31056
San Lazzaro di Savena BO 8 32065 63121
Monterenzio BO 9 6035 69156
Castenaso BO 12 14925 84081
Bologna BO 13 386663 470744
Castel San Pietro Terme BO 13 20811 491555
Casalecchio di Reno BO 15 36327 527882
Sasso Marconi BO 15 14735 542617
Dozza BO 16 6652 549269
Granarolo dell'Emilia BO 17 11910 561179
Loiano BO 17 4294 565473
Budrio BO 17 18412 583885
Medicina BO 19 16739 600624
Borgo Tossignano BO 19 3288 603912
Casalfiumanese BO 19 3438 607350
Monzuno BO 19 6328 613678
Fontanelice BO 19 1943 615621
Marzabotto BO 19 6779 622400
Monte San Pietro BO 20 10982 633382
Zola Predosa BO 20 18770 652152
Castel Maggiore BO 20 18231 670383
Castel Guelfo di Bologna BO 20 4455 674838

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SE of Bologna (386663 inhabitants)
23 Km W of Imola (69797 inhabitants)
38 Km W of Faenza (58541 inhabitants)
48 Km SE of Modena (184973 inhabitants)
50 Km SW of Ferrara (133155 inhabitants)
52 Km W of Forlì (117913 inhabitants)
61 Km SE of Carpi (70699 inhabitants)
61 Km W of Ravenna (159116 inhabitants)
64 Km NE of Prato (191150 inhabitants)
66 Km NE of Pistoia (90315 inhabitants)
71 Km W of Cesena (96758 inhabitants)
72 Km E of Reggio nell'Emilia (171345 inhabitants)
72 Km N of Firenze (382808 inhabitants)
74 Km N of Scandicci (50609 inhabitants)
80 Km SW of Rovigo (51867 inhabitants)
97 Km NE of Lucca (89046 inhabitants)
98 Km W of Rimini (147750 inhabitants)
98 Km E of Parma (192836 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 1.6 2020-08-17
19:01:13		 44.4033 11.4332 28 2020-11-19
12:37:05		 Bollettino Sismico Italiano INGV 84028051
Reviewed
Rev100 		ML 1.6 2020-08-17
19:01:13		 44.3118 11.4258 37 2020-08-17
19:10:15		 Sala Sismica INGV-Roma 82095011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-17 19:01:13 ± 0.49
Latitude 44.4033 ± 0.0216
Longitude 11.4332 ± 0.0290
Depth (km) 28 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84028051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2450
Semi-minor axis of confidence ellipse (meter) 251
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 147
Circular confidence region, given by single value of horizontal uncertainty (meter) 2450.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.61
Epicentral distance of station closest to the epicenter (degree) 0.09083
Epicentral distance of station farthest from the epicenter (degree) 0.95058
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 82095011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-17 19:10:15

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 84028051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-07 11:07:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RINC.HHN. 2020-08-17T19:01:33.45 0.6 undecidable manual S 166 58.9965 109 1.07 34
IV.PII.HHZ. 2020-08-17T19:01:32.71 0.1 undecidable manual P 224 104.6175 100 1.52 48
IV.PARC.HHZ. 2020-08-17T19:01:31.75 0.6 undecidable manual P 142 105.5166 100 0.43 39
IV.FNVD.HHZ. 2020-08-17T19:01:27.00 0.3 undecidable manual S 223 35.9418 122 0.2 72
IV.SEI.HHZ. 2020-08-17T19:01:27.27 0.3 undecidable manual S 189 39.1275 120 -0.28 68
IV.MPPT.EHN. 2020-08-17T19:01:24.81 0.3 undecidable manual P 209 56.499 110 0.81 57
IV.SFI.HNN. 2020-08-17T19:01:24.88 0.3 undecidable manual P 149 64.3911 108 -0.27 66
IV.RINC.HHN. 2020-08-17T19:01:24.24 0.1 undecidable manual P 166 58.9965 109 -0.12 92
IV.MTRZ.HHZ. 2020-08-17T19:01:23.00 0.3 undecidable manual S 184 10.0788 158 0.8 62
IV.VISG.HHZ. 2020-08-17T19:01:23.59 0.3 undecidable manual S 180 23.754 135 -0.66 62
IV.ZCCA.HHZ. 2020-08-17T19:01:22.15 1.0 undecidable manual P 261 36.6411 122 0.9 19
IV.MOCL.EHZ. 2020-08-17T19:01:22.96 0.3 undecidable manual P 205 48.5181 114 0.09 71
IV.IMOL.EHZ. 2020-08-17T19:01:21.03 0.3 undecidable manual P 101 24.9528 133 1.22 48
IV.FNVD.HHZ. 2020-08-17T19:01:20.70 0.1 undecidable manual P 223 35.9418 122 -0.44 89
IV.SEI.HHZ. 2020-08-17T19:01:20.98 0.1 undecidable manual P 189 39.1275 120 -0.6 84
IV.MTRZ.HHZ. 2020-08-17T19:01:18.34 0.1 undecidable manual P 184 10.0788 158 -0.15 100
IV.VISG.HHZ. 2020-08-17T19:01:18.72 0.1 undecidable manual P 180 23.754 135 -0.96 75
IV.FIU.EHE. 2020-08-17T19:01:18.96 0.3 undecidable manual P 10 26.6511 131 -1.04 56
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRZ.HNE. ML:1.7 0.00026741645 0.6528 AML other m 2020-08-17T19:01:22.78
IV.MTRZ.HHE. ML:1.6 0.00020662534999999998 0.5376 AML other m 2020-08-17T19:01:22.50
IV.MTRZ.HHN. ML:2.0 0.0005086747 0.4992 AML other m 2020-08-17T19:01:23.42
IV.MTRZ.HNN. ML:2.0 0.00056710575 0.576 AML other m 2020-08-17T19:01:23.47
IV.VISG.HHE. ML:1.4 0.00010334734000000001 0.4224 AML other m 2020-08-17T19:01:23.92
IV.VISG.HHN. ML:1.7 0.00019401859999999997 0.3712 AML other m 2020-08-17T19:01:23.97
IV.FNVD.HHN. ML:1.5 0.00010235074999999999 0.0896 AML other m 2020-08-17T19:01:27.26
IV.SEI.HHE. ML:1.3 0.000062411205 0.576 AML other m 2020-08-17T19:01:27.74
IV.SEI.HHN. ML:1.4 0.00008158364499999999 1.4464 AML other m 2020-08-17T19:01:27.73
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