Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 17-08-2020 and time 19:35:26 (UTC) in region 2 km SE Ozzano dell'Emilia (BO)

A magnitude ML 1.7 earthquake occured in region: 2 km SE Ozzano dell'Emilia (BO), on

  • 17-08-2020 19:35:26 (UTC)
  • 17-08-2020 21:35:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.4310, 11.4920 at 24 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 2 13596 13596
San Lazzaro di Savena BO 8 32065 45661
Castel San Pietro Terme BO 9 20811 66472
Castenaso BO 9 14925 81397
Budrio BO 13 18412 99809
Pianoro BO 13 17460 117269
Medicina BO 13 16739 134008
Monterenzio BO 14 6035 140043
Dozza BO 14 6652 146695
Bologna BO 14 386663 533358
Granarolo dell'Emilia BO 14 11910 545268
Castel Guelfo di Bologna BO 15 4455 549723
Casalecchio di Reno BO 18 36327 586050
Casalfiumanese BO 18 3438 589488
Borgo Tossignano BO 19 3288 592776
Castel Maggiore BO 19 18231 611007
Imola BO 20 69797 680804
Fontanelice BO 20 1943 682747
Sasso Marconi BO 20 14735 697482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km SE of Bologna (386663 inhabitants)
20 Km W of Imola (69797 inhabitants)
35 Km W of Faenza (58541 inhabitants)
46 Km S of Ferrara (133155 inhabitants)
49 Km W of Forlì (117913 inhabitants)
51 Km E of Modena (184973 inhabitants)
56 Km W of Ravenna (159116 inhabitants)
62 Km SE of Carpi (70699 inhabitants)
68 Km W of Cesena (96758 inhabitants)
69 Km NE of Prato (191150 inhabitants)
72 Km NE of Pistoia (90315 inhabitants)
74 Km E of Reggio nell'Emilia (171345 inhabitants)
75 Km SW of Rovigo (51867 inhabitants)
76 Km N of Firenze (382808 inhabitants)
79 Km NE of Scandicci (50609 inhabitants)
95 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
Bulletin
Rev1000 		ML 1.7 2020-08-17
19:35:26		 44.4307 11.4917 24 2020-11-19
12:37:05		 Bollettino Sismico Italiano INGV 84052571
Reviewed
Rev100 		ML 1.7 2020-08-17
19:35:26		 44.3952 11.4768 26 2020-08-17
19:55:02		 Sala Sismica INGV-Roma 82095691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-17 19:35:26 ± 0.29
Latitude 44.4307 ± 0.0153
Longitude 11.4917 ± 0.0277
Depth (km) 24 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 84052571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1777
Semi-minor axis of confidence ellipse (meter) 1401
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 99
Circular confidence region, given by single value of horizontal uncertainty (meter) 1780.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.66820
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 82095691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-17 19:55:02

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 84052571
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-23 09:05:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.CLTB.HHZ. 2020-08-17T19:37:28.25 3.0 negative manual Pg 17.379999 0
IV.PANTE.HHZ. 2020-08-17T19:37:21.20 3.0 positive manual Pn 1.66 0
IV.ROSPO.HHZ. 2020-08-17T19:37:15.05 3.0 undecidable manual Sg 10.94 0
XK.GIZZ.HHZ. 2020-08-17T19:37:06.19 3.0 negative manual Pn 0.78 0
IV.VIVA.HHZ. 2020-08-17T19:36:56.75 3.0 undecidable manual Sg 7.61 0
IV.TREM.HHZ. 2020-08-17T19:36:42.36 3.0 positive manual Pg 13.72 0
IV.FVI.HHZ. 2020-08-17T19:36:19.19 3.0 undecidable manual Pg 5.88 0
MN.TRI.HHZ. 2020-08-17T19:36:13.69 3.0 negative manual Pg 4.58 0
IV.RIBO.EHZ.01 2020-08-17T19:36:11.06 3.0 undecidable manual S -3.9 0
IV.MURB.HHZ. 2020-08-17T19:35:55.66 3.0 negative manual P 0.22 0
IV.PESA.HHZ. 2020-08-17T19:35:55.11 3.0 undecidable manual P 1.93 0
GU.GRAM.HHZ. 2020-08-17T19:35:50.40 3.0 undecidable manual P 0.48 0
IV.SEI.HHZ. 2020-08-17T19:35:40.42 0.6 undecidable manual S 194 43.0236 112 -0.61 44
IV.ASQU.HHZ. 2020-08-17T19:35:39.66 0.1 undecidable manual P 161 74.1702 102 0.2 91
IV.MPPT.EHZ. 2020-08-17T19:35:38.09 0.1 undecidable manual P 211 61.3941 105 0.56 85
IV.SFI.HNN. 2020-08-17T19:35:38.00 0.1 undecidable manual P 154 64.7907 104 -0.04 95
IV.BRIS.HHE. 2020-08-17T19:35:38.46 0.3 undecidable manual S 136 31.6461 120 0.19 74
IV.RUFI.EHE. 2020-08-17T19:35:38.95 0.1 undecidable manual P 179 65.7897 104 0.77 78
IV.RINC.HHN. 2020-08-17T19:35:37.17 0.1 undecidable manual P 171 61.0944 105 -0.31 91
IV.MOCL.EHZ. 2020-08-17T19:35:36.51 0.3 undecidable manual P 208 53.3022 107 0.18 71
IV.VISG.HHZ. 2020-08-17T19:35:36.65 0.1 undecidable manual S 190 27.1506 125 -0.64 90
IV.RONT.HHE. 2020-08-17T19:35:36.09 0.6 undecidable manual P 186 48.7179 109 0.44 45
IV.MTRZ.HHZ. 2020-08-17T19:35:35.41 0.3 undecidable manual S 202 14.0748 146 0.6 67
IV.ZCCA.HHZ. 2020-08-17T19:35:35.52 0.3 undecidable manual P 258 41.8248 113 0.87 58
IV.SEI.HHZ. 2020-08-17T19:35:34.01 0.1 undecidable manual P 194 43.0236 112 -0.83 79
IV.BRIS.HHE. 2020-08-17T19:35:33.42 0.1 undecidable manual P 136 31.6461 120 0.17 99
IV.FNVD.HHN. 2020-08-17T19:35:33.82 0.1 undecidable manual P 225 41.3253 113 -0.77 82
IV.FIU.EHN. 2020-08-17T19:35:32.08 0.1 undecidable manual P 0 23.2545 130 -0.12 100
IV.MTRZ.HHZ. 2020-08-17T19:35:31.62 0.1 negative manual P 202 14.0748 146 0.37 97
IV.VISG.HHZ. 2020-08-17T19:35:31.99 0.1 undecidable manual P 190 27.1506 125 -0.69 87
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRZ.HHE. ML:1.6 0.0002377682 0.6016 AML other m 2020-08-17T19:35:35.60
IV.MTRZ.HHN. ML:1.9 0.00047515865 0.576 AML other m 2020-08-17T19:35:36.57
IV.MTRZ.HNN. ML:1.9 0.00047980230000000003 0.5632 AML other m 2020-08-17T19:35:36.58
IV.VISG.HHE. ML:1.0 0.00004507392 0.5632 AML other m 2020-08-17T19:35:36.94
IV.MTRZ.HNE. ML:1.9 0.0004302338 0.3072 AML other m 2020-08-17T19:35:37.63
IV.VISG.HHN. ML:1.6 0.00014266195 0.2816 AML other m 2020-08-17T19:35:37.52
IV.SEI.HHE. ML:1.1 0.000036872215 0.1536 AML other m 2020-08-17T19:35:40.64
IV.SEI.HHN. ML:1.7 0.00014983155 0.2048 AML other m 2020-08-17T19:35:41.43
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