Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 05-10-2019 and time 23:48:26 (Italy) in region 4 km SW Imola (BO)

A magnitude ML 1.6 earthquake occured in region: 4 km SW Imola (BO), on

  • 05-10-2019 21:48:26 (UTC)
  • 05-10-2019 23:48:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.3210, 11.6980 at 22 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
Imola BO 4 69797 69797
Riolo Terme RA 5 5720 75517
Casalfiumanese BO 7 3438 78955
Dozza BO 7 6652 85607
Castel Bolognese RA 8 9554 95161
Borgo Tossignano BO 10 3288 98449
Castel San Pietro Terme BO 12 20811 119260
Casola Valsenio RA 12 2617 121877
Brisighella RA 12 7639 129516
Castel Guelfo di Bologna BO 13 4455 133971
Mordano BO 13 4760 138731
Solarolo RA 13 4488 143219
Bagnara di Romagna RA 13 2429 145648
Fontanelice BO 13 1943 147591
Faenza RA 15 58541 206132
Massa Lombarda RA 18 10653 216785
Medicina BO 18 16739 233524
Sant'Agata sul Santerno RA 19 2862 236386
Castel del Rio BO 19 1246 237632
Modigliana FC 20 4560 242192

Municipalities with at least 50000 inhabitants

An earthquake occurred to
4 Km SW of Imola (69797 inhabitants)
15 Km W of Faenza (58541 inhabitants)
29 Km W of Forlì (117913 inhabitants)
34 Km SE of Bologna (386663 inhabitants)
41 Km W of Ravenna (159116 inhabitants)
48 Km W of Cesena (96758 inhabitants)
58 Km S of Ferrara (133155 inhabitants)
68 Km NE of Prato (191150 inhabitants)
71 Km NE of Firenze (382808 inhabitants)
71 Km SE of Modena (184973 inhabitants)
75 Km NE of Scandicci (50609 inhabitants)
75 Km W of Rimini (147750 inhabitants)
76 Km NE of Pistoia (90315 inhabitants)
82 Km SE of Carpi (70699 inhabitants)
84 Km S of Rovigo (51867 inhabitants)
94 Km E of Reggio nell'Emilia (171345 inhabitants)
96 Km N of Arezzo (99543 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 2019-10-05
21:48:26		 44.3207 11.6978 22 2020-02-28
16:42:01		 Bollettino Sismico Italiano INGV 73639481
Reviewed
Rev100 		ML 1.6 2019-10-05
21:48:26		 44.3125 11.7017 22 2019-10-05
21:57:35		 Sala Sismica INGV-Roma 73070591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-05 21:48:26 ± 0.14
Latitude 44.3207 ± 0.0054
Longitude 11.6978 ± 0.0075
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73639481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 586
Semi-minor axis of confidence ellipse (meter) 335
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 199
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.05036
Epicentral distance of station farthest from the epicenter (degree) 0.56747
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 16
Type of magnitude ML
Reference to an origin 73070591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-05 21:57:35

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 73639481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-11-04 14:41:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASQU.HHZ. 2019-10-05T21:48:44.78 0.3 undecidable manual S 173 58.5969 103 0.37 65
IV.RUFI.EHZ. 2019-10-05T21:48:43.69 0.6 undecidable manual S 196 55.5999 104 0.05 46
IV.MOCL.EHZ. 2019-10-05T21:48:43.55 0.6 undecidable manual S 230 54.0015 104 0.31 43
IV.FNVD.HHZ. 2019-10-05T21:48:42.20 0.6 undecidable manual S 250 48.7179 106 0.34 44
IV.SFI.EHZ. 2019-10-05T21:48:41.94 0.6 undecidable manual S 166 47.619 106 0.35 44
IV.SEI.HHZ. 2019-10-05T21:48:39.43 0.3 undecidable manual S 223 40.0266 110 -0.22 69
IV.MPPT.EHE. 2019-10-05T21:48:37.58 0.1 undecidable manual P 230 62.9925 102 0.29 86
IV.RUFI.EHZ. 2019-10-05T21:48:36.04 0.1 undecidable manual P 196 55.5999 104 -0.15 91
IV.ASQU.HHZ. 2019-10-05T21:48:36.51 0.1 undecidable manual P 173 58.5969 103 -0.13 90
IV.ZCCA.HNE. 2019-10-05T21:48:36.28 0.1 undecidable manual P 274 57.2982 103 -0.17 91
IV.LMD.HHZ. 2019-10-05T21:48:36.67 0.3 undecidable manual S 178 26.9508 121 0.17 71
IV.MTRZ.HHE. 2019-10-05T21:48:35.46 0.3 undecidable manual S 268 21.6672 128 0.13 72
IV.MOCL.EHZ. 2019-10-05T21:48:35.79 1.0 negative manual P 230 54.0015 104 -0.16 23
IV.FNVD.HHZ. 2019-10-05T21:48:35.00 0.6 negative manual P 250 48.7179 106 -0.16 46
IV.SFI.EHZ. 2019-10-05T21:48:35.21 0.6 positive manual P 166 47.619 106 0.21 45
IV.IMOL.EHZ. 2019-10-05T21:48:33.34 0.6 undecidable manual S 39 5.5944 163 0.5 46
IV.SEI.HHZ. 2019-10-05T21:48:33.51 0.1 undecidable manual P 223 40.0266 110 -0.38 89
IV.BRIS.HHZ. 2019-10-05T21:48:33.27 0.6 undecidable manual S 153 11.9769 147 -0.29 47
IV.BRSN.EHE. 2019-10-05T21:48:32.69 0.1 undecidable manual P 97 30.6471 117 0.13 95
IV.LMD.HHZ. 2019-10-05T21:48:31.39 0.6 negative manual P 178 26.9508 121 -0.68 41
IV.MTRZ.HHE. 2019-10-05T21:48:31.55 0.1 undecidable manual P 268 21.6672 128 0.15 95
IV.BRIS.HHZ. 2019-10-05T21:48:30.06 0.1 positive manual P 153 11.9769 147 -0.31 94
IV.IMOL.EHZ. 2019-10-05T21:48:29.87 0.1 undecidable manual P 39 5.5944 163 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHE. ML:1.6 0.0002885557 0.4608 AML other m 2019-10-05T21:48:33.61
IV.BRIS.HNN. ML:1.7 0.00032078555 1.1776 AML other m 2019-10-05T21:48:33.95
IV.IMOL.HNE. ML:2.1 0.0009575 1.76 AML other m 2019-10-05T21:48:34.88
IV.IMOL.HNN. ML:1.4 0.0008425 1.2 AML other m 2019-10-05T21:48:35.87
IV.LMD.HHN. ML:1.7 0.00022399999999999997 1.04 AML other m 2019-10-05T21:48:37.69
IV.LMD.HHE. ML:1.6 0.00016949999999999997 0.14 AML other m 2019-10-05T21:48:38.26
IV.SFI.EHE. ML:1.6 0.00009584999999999999 0.76 AML other m 2019-10-05T21:48:42.62
IV.SFI.EHN. ML:1.5 0.0000733 0.74 AML other m 2019-10-05T21:48:42.42
IV.FNVD.HHN. ML:1.8 0.00015 1.54 AML other m 2019-10-05T21:48:43.93
IV.FNVD.HHE. ML:1.8 0.00013800000000000002 0.62 AML other m 2019-10-05T21:48:43.48
IV.MOCL.EHE. ML:1.5 0.00006615 0.26 AML other m 2019-10-05T21:48:45.27
IV.ASQU.HHE. ML:1.5 0.0000579 0.94 AML other m 2019-10-05T21:48:46.55
IV.MOCL.EHN. ML:1.2 0.000058250000000000006 1.06 AML other m 2019-10-05T21:48:46.23
IV.BRIS.HHN. ML:1.7 0.00030160015 0.3584 AML other m 2019-10-05T21:48:33.77
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