Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 29-07-2020 and time 15:20:59 (UTC) in region 3 km S Solarolo (RA)

A magnitude ML 1.5 earthquake occured in region: 3 km S Solarolo (RA), on

  • 29-07-2020 15:20:59 (UTC)
  • 29-07-2020 17:20:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.3320, 11.8500 at 26 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
Solarolo RA 3 4488 4488
Castel Bolognese RA 4 9554 14042
Faenza RA 6 58541 72583
Bagnara di Romagna RA 7 2429 75012
Mordano BO 8 4760 79772
Cotignola RA 10 7474 87246
Imola BO 11 69797 157043
Lugo RA 11 32390 189433
Riolo Terme RA 12 5720 195153
Sant'Agata sul Santerno RA 13 2862 198015
Massa Lombarda RA 13 10653 208668
Brisighella RA 14 7639 216307
Bagnacavallo RA 14 16739 233046
Russi RA 15 12247 245293
Fusignano RA 18 8222 253515
Castel Guelfo di Bologna BO 18 4455 257970
Dozza BO 18 6652 264622
Casalfiumanese BO 19 3438 268060
Castrocaro Terme e Terra del Sole FC 19 6426 274486
Forlì FC 19 117913 392399
Modigliana FC 20 4560 396959

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km NW of Faenza (58541 inhabitants)
11 Km E of Imola (69797 inhabitants)
19 Km NW of Forlì (117913 inhabitants)
30 Km W of Ravenna (159116 inhabitants)
38 Km NW of Cesena (96758 inhabitants)
44 Km E of Bologna (386663 inhabitants)
59 Km SE of Ferrara (133155 inhabitants)
65 Km W of Rimini (147750 inhabitants)
78 Km NE of Prato (191150 inhabitants)
78 Km NE of Firenze (382808 inhabitants)
81 Km E of Modena (184973 inhabitants)
83 Km S of Rovigo (51867 inhabitants)
83 Km NE of Scandicci (50609 inhabitants)
86 Km NE of Pistoia (90315 inhabitants)
91 Km SE of Carpi (70699 inhabitants)
96 Km N of Arezzo (99543 inhabitants)
97 Km W of Pesaro (94582 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 1.5 2020-07-29
15:20:59		 44.3315 11.8495 26 2020-11-19
12:37:04		 Bollettino Sismico Italiano INGV 83819361
Reviewed
Rev100 		ML 1.5 2020-07-29
15:20:58		 44.3548 11.914 27 2020-07-29
15:32:14		 Sala Sismica INGV-Roma 81457461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-29 15:20:59 ± 0.4
Latitude 44.3315 ± 0.0189
Longitude 11.8495 ± 0.0239
Depth (km) 26 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83819361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1838
Semi-minor axis of confidence ellipse (meter) 1789
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 8
Circular confidence region, given by single value of horizontal uncertainty (meter) 1840.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 176
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.71586
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 83819361
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-28 00:37:43

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 81457461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-29 15:32:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SPS2.HHZ. 2020-07-29T15:22:39.74 3.0 negative manual Pg 10.01 0
XK.GIZZ.HHZ. 2020-07-29T15:22:36.92 3.0 undecidable manual Pn 4.22 0
IV.PLLN.EHZ. 2020-07-29T15:22:36.90 3.0 positive manual Pn -0.26 0
XK.SELL.HHZ. 2020-07-29T15:22:34.06 3.0 positive manual Pn -0.89 0
IV.VAGA.HHZ. 2020-07-29T15:22:27.48 3.0 undecidable manual Sn -7.56 0
IV.MMN.HHZ. 2020-07-29T15:22:21.95 3.0 negative manual Pn 1.17 0
IV.MTMR.EHZ. 2020-07-29T15:22:14.31 3.0 negative manual Pg 10.99 0
IV.SARZ.HHZ. 2020-07-29T15:22:13.00 3.0 undecidable manual Sg 4.03 0
IV.EUCT.HNZ. 2020-07-29T15:22:12.06 3.0 undecidable manual Sg 4.25 0
IV.MBAL.EHZ. 2020-07-29T15:21:51.39 3.0 undecidable manual Sg -1.2 0
IV.ROM9.HNZ. 2020-07-29T15:21:49.18 3.0 positive manual Pg 7.02 0
ST.PANI.EHZ. 2020-07-29T15:21:29.86 3.0 undecidable manual Pg -2.39 0
IV.SEI.HHZ. 2020-07-29T15:21:17.22 0.6 undecidable manual S 232 49.7169 111 1.47 29
IV.SFI.EHZ. 2020-07-29T15:21:15.43 0.6 undecidable manual S 180 47.3193 113 0.26 49
IV.CRE.HHZ. 2020-07-29T15:21:13.98 0.3 undecidable manual P 174 79.4649 103 0.8 57
IV.NDIM.HNZ. 2020-07-29T15:21:12.51 3.0 positive manual P -7.63 0
IV.VISG.HHZ. 2020-07-29T15:21:12.99 0.6 undecidable manual S 245 36.5412 119 0.41 48
IV.LMD.HHZ. 2020-07-29T15:21:10.89 0.6 undecidable manual S 202 30.3474 125 -0.28 49
IV.SEI.HHZ. 2020-07-29T15:21:09.07 0.6 undecidable manual P 232 49.7169 111 0.29 48
IV.BRSN.HNE. 2020-07-29T15:21:09.54 0.3 undecidable manual S 106 19.0698 140 0.61 69
IV.SFI.EHZ. 2020-07-29T15:21:08.10 0.1 undecidable manual P 180 47.3193 113 -0.34 94
IV.BRIS.HHZ. 2020-07-29T15:21:07.80 0.6 undecidable manual S 209 13.5753 149 -0.28 50
IV.IMOL.EHZ. 2020-07-29T15:21:07.77 0.3 undecidable manual S 290 9.0798 159 0.22 77
IV.VISG.HHZ. 2020-07-29T15:21:06.79 0.1 undecidable manual P 245 36.5412 119 -0.16 100
IV.LMD.HHZ. 2020-07-29T15:21:05.68 0.1 undecidable manual P 202 30.3474 125 -0.46 94
IV.BRSN.HNE. 2020-07-29T15:21:04.69 0.3 undecidable manual P 106 19.0698 140 -0.15 78
IV.BRIS.HHZ. 2020-07-29T15:21:03.96 0.1 undecidable manual P 209 13.5753 149 -0.39 99
IV.IMOL.EHZ. 2020-07-29T15:21:03.77 0.3 undecidable manual P 290 9.0798 159 -0.28 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHN. ML:1.7 0.0002495 0.24 AML other m 2020-07-29T15:21:08.63
IV.BRIS.HHE. ML:1.8 0.00033350000000000003 0.74 AML other m 2020-07-29T15:21:08.58
IV.LMD.HHE. ML:1.7 0.000192 0.3 AML other m 2020-07-29T15:21:11.58
IV.LMD.HHN. ML:1.4 0.0001015 1.3 AML other m 2020-07-29T15:21:12.06
IV.VISG.HHE. ML:1.1 0.0000407 0.7 AML other m 2020-07-29T15:21:15.53
IV.VISG.HHN. ML:1.1 0.000039349999999999994 0.62 AML other m 2020-07-29T15:21:15.73
IV.SFI.EHE. ML:1.4 0.00006345000000000001 1.58 AML other m 2020-07-29T15:21:15.11
IV.SFI.EHN. ML:1.4 0.00005385 0.22 AML other m 2020-07-29T15:21:16.40
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