Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 17-08-2020 and time 22:24:08 (UTC) in region 5 km SW Ozzano dell'Emilia (BO)

A magnitude ML 1.7 earthquake occured in region: 5 km SW Ozzano dell'Emilia (BO), on

  • 17-08-2020 22:24:08 (UTC)
  • 18-08-2020 00:24:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.4030, 11.4580 at 23 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 5 13596 13596
San Lazzaro di Savena BO 9 32065 45661
Pianoro BO 9 17460 63121
Monterenzio BO 10 6035 69156
Castel San Pietro Terme BO 11 20811 89967
Castenaso BO 12 14925 104892
Bologna BO 14 386663 491555
Dozza BO 14 6652 498207
Budrio BO 16 18412 516619
Casalecchio di Reno BO 16 36327 552946
Medicina BO 17 16739 569685
Granarolo dell'Emilia BO 17 11910 581595
Sasso Marconi BO 17 14735 596330
Casalfiumanese BO 17 3438 599768
Borgo Tossignano BO 17 3288 603056
Castel Guelfo di Bologna BO 18 4455 607511
Fontanelice BO 18 1943 609454
Loiano BO 18 4294 613748

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km SE of Bologna (386663 inhabitants)
21 Km W of Imola (69797 inhabitants)
36 Km W of Faenza (58541 inhabitants)
50 Km S of Ferrara (133155 inhabitants)
50 Km SE of Modena (184973 inhabitants)
51 Km W of Forlì (117913 inhabitants)
59 Km W of Ravenna (159116 inhabitants)
62 Km SE of Carpi (70699 inhabitants)
65 Km NE of Prato (191150 inhabitants)
68 Km NE of Pistoia (90315 inhabitants)
69 Km W of Cesena (96758 inhabitants)
72 Km N of Firenze (382808 inhabitants)
73 Km E of Reggio nell'Emilia (171345 inhabitants)
75 Km NE of Scandicci (50609 inhabitants)
79 Km SW of Rovigo (51867 inhabitants)
96 Km W of Rimini (147750 inhabitants)
98 Km NE of Lucca (89046 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 1.7 2020-08-17
22:24:08		 44.4033 11.4583 23 2020-11-19
12:37:05		 Bollettino Sismico Italiano INGV 84151861
Reviewed
Rev100 		ML 2.1 2020-08-17
22:24:07		 44.332 11.4872 34 2020-08-17
22:47:35		 Sala Sismica INGV-Roma 82099101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-17 22:24:08 ± 0.16
Latitude 44.4033 ± 0.0099
Longitude 11.4583 ± 0.0151
Depth (km) 23 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84151861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1211
Semi-minor axis of confidence ellipse (meter) 794
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 100
Circular confidence region, given by single value of horizontal uncertainty (meter) 1210.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.36067
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 84151861
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-07 11:59:35

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 82099101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-17 22:47:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.BLANC.HHZ. 2020-08-17T22:26:05.53 3.0 undecidable manual Sg 20.870001 0
IV.MCRV.HHZ. 2020-08-17T22:26:02.81 3.0 undecidable manual Sn -9.99 0
MN.BLY.HHZ. 2020-08-17T22:25:58.23 3.0 undecidable manual Sn -3.27 0
IV.SPS2.HHZ. 2020-08-17T22:25:35.64 3.0 negative manual Pn -6.4 0
IV.MCRV.HHZ. 2020-08-17T22:25:28.24 3.0 undecidable manual Pg 10.08 0
IV.PAOL.HHZ. 2020-08-17T22:25:10.91 3.0 undecidable manual Pn -0.91 0
IV.GIUL.HHZ. 2020-08-17T22:25:00.93 3.0 positive manual Pg 1.99 0
IV.ROSPO.HHZ. 2020-08-17T22:24:59.67 3.0 undecidable manual Pn -1.85 0
IV.TOLF.HHZ. 2020-08-17T22:24:51.63 3.0 positive manual Pg 3.17 0
IV.ZOVE.EHZ. 2020-08-17T22:24:42.56 0.6 undecidable manual S 1 116.4945 97 0.39 41
IV.MBAL.EHZ. 2020-08-17T22:24:33.25 0.1 undecidable manual P 342 151.0377 54 0.54 72
IV.ZOVE.EHZ. 2020-08-17T22:24:27.68 0.1 undecidable manual P 1 116.4945 97 -0.22 81
IV.SEI.HHZ. 2020-08-17T22:24:22.12 0.6 undecidable manual S 192 39.5271 113 -0.01 50
IV.FNVD.HHZ. 2020-08-17T22:24:21.86 0.3 undecidable manual S 226 37.3293 115 0.27 71
IV.BRIS.HHZ. 2020-08-17T22:24:20.32 0.6 undecidable manual S 129 31.5462 120 0.11 50
IV.MPPT.EHN. 2020-08-17T22:24:19.51 0.1 undecidable manual P 211 57.498 105 0.56 85
IV.IMOL.HNZ. 2020-08-17T22:24:19.43 0.6 undecidable manual S 102 23.0547 130 1.08 37
IV.FIU.EHZ. 2020-08-17T22:24:18.79 0.6 undecidable manual S 6 26.4513 125 -0.27 48
IV.VISG.HHZ. 2020-08-17T22:24:18.60 0.3 undecidable manual S 185 23.8539 128 0.09 76
IV.MOCL.EHZ. 2020-08-17T22:24:18.08 0.3 undecidable manual P 207 49.4172 108 0.32 69
IV.ZCCA.HNZ. 2020-08-17T22:24:16.80 0.3 undecidable manual P 262 38.628 114 0.59 66
IV.MTRZ.HHZ. 2020-08-17T22:24:16.58 0.6 undecidable manual S 195 10.3785 153 0.37 49
IV.RONT.HHZ. 2020-08-17T22:24:16.79 0.3 undecidable manual P 183 45.5211 110 -0.4 69
IV.SEI.HHZ. 2020-08-17T22:24:15.68 0.1 undecidable manual P 192 39.5271 113 -0.65 85
IV.FNVD.HHZ. 2020-08-17T22:24:15.55 0.1 negative manual P 226 37.3293 115 -0.47 91
IV.BRIS.HHZ. 2020-08-17T22:24:14.56 0.1 undecidable manual P 129 31.5462 120 -0.66 86
IV.IMOL.HNZ. 2020-08-17T22:24:14.57 0.3 undecidable manual P 102 23.0547 130 0.42 71
IV.VISG.HHZ. 2020-08-17T22:24:13.70 0.1 positive manual P 185 23.8539 128 -0.54 91
IV.MTRZ.HHZ. 2020-08-17T22:24:13.19 0.1 positive manual P 195 10.3785 153 0.27 100
IV.FIU.EHZ. 2020-08-17T22:24:13.86 0.3 undecidable manual P 6 26.4513 125 -0.7 63
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HNN. ML:1.4 0.0000992230895 0.6336 AML other m 2020-08-17T22:24:14.09
IV.VISG.HHN. ML:1.3 0.00009538300999999999 0.4224 AML other m 2020-08-17T22:24:19.31
IV.VISG.HHE. ML:1.2 0.00007379174 0.2048 AML other m 2020-08-17T22:24:19.70
IV.MTRZ.HNN. ML:1.8 0.00036700295 0.384 AML other m 2020-08-17T22:24:19.74
IV.MTRZ.HHN. ML:1.8 0.00037655685 0.32 AML other m 2020-08-17T22:24:20.38
IV.MTRZ.HHE. ML:1.8 0.00041845889999999995 0.3712 AML other m 2020-08-17T22:24:21.34
IV.MTRZ.HNE. ML:1.9 0.00046123145 0.3968 AML other m 2020-08-17T22:24:21.53
IV.FNVD.HHN. ML:1.2 0.000056630395 0.1024 AML other m 2020-08-17T22:24:22.03
IV.SEI.HHN. ML:1.6 0.0001137049 1.8208 AML other m 2020-08-17T22:24:24.06
IV.BRIS.HHN. ML:1.3 0.00007974811500000001 0.32 AML other m 2020-08-17T22:24:24.54
IV.SEI.HHE. ML:1.4 0.00006827638 0.4992 AML other m 2020-08-17T22:24:25.25
IV.RONT.HHN. ML:1.6 0.000104060075 0.32 AML other m 2020-08-17T22:24:29.61
IV.RONT.HHE. ML:1.8 0.0001611542 0.2688 AML other m 2020-08-17T22:24:29.62
IV.FNVD.HHE. ML:1.2 0.000048307015000000005 0.7424 AML other m 2020-08-17T22:24:30.47
IV.BRIS.HHE. ML:1.3 0.00007176015 0.6784 AML other m 2020-08-17T22:24:30.71
IV.BRIS.HNE. ML:1.5 0.000110470625 0.7808 AML other m 2020-08-17T22:24:31.16
IV.ZOVE.EHN. ML:2.1 0.00010530468500000001 0.32 AML other m 2020-08-17T22:24:43.26
IV.ZOVE.HNN. ML:2.2 0.00010793643 0.32 AML other m 2020-08-17T22:24:43.26
IV.ZOVE.EHE. ML:2.0 0.00008044025499999999 0.2304 AML other m 2020-08-17T22:24:43.92
IV.ZOVE.HNE. ML:2.0 0.00007956825499999999 0.2176 AML other m 2020-08-17T22:24:43.91
IV.MBAL.EHE. ML:2.1 0.00006577757500000001 1.68 AML other m 2020-08-17T22:24:55.94
IV.MBAL.EHN. ML:1.8 0.000030298934999999998 0.1664 AML other m 2020-08-17T22:24:55.12
IV.MBAL.HNE. ML:2.6 0.000181324 0.8576 AML other m 2020-08-17T22:25:12.61
IV.MBAL.HNN. ML:2.4 0.00014123568 1.0112 AML other m 2020-08-17T22:25:18.35
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
Waveforms Seismic signals in miniseed + resp format Download