Earthquake with magnitude of ML 1.8 on date 19-07-2020 and time 06:42:14 (Italy) in region 6 km N Marradi (FI)

A magnitude ML 1.8 earthquake occured in region: 6 km N Marradi (FI), on

  • 19-07-2020 04:42:14 (UTC)
  • 19-07-2020 06:42:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.13, 11.62 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Marradi FI 7 3139 3139
Palazzuolo sul Senio FI 7 1154 4293
Casola Valsenio RA 10 2617 6910
Tredozio FC 11 1212 8122
Castel del Rio BO 13 1246 9368
Modigliana FC 14 4560 13928
Fontanelice BO 15 1943 15871
Brisighella RA 15 7639 23510
Borgo Tossignano BO 16 3288 26798
Portico e San Benedetto FC 17 756 27554
Riolo Terme RA 18 5720 33274
Casalfiumanese BO 18 3438 36712
Rocca San Casciano FC 19 1910 38622
Firenzuola FI 20 4726 43348

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km S of Imola (69797 inhabitants)
27 Km SW of Faenza (58541 inhabitants)
35 Km W of Forlì (117913 inhabitants)
46 Km SE of Bologna (386663 inhabitants)
49 Km W of Cesena (96758 inhabitants)
50 Km NE of Firenze (382808 inhabitants)
51 Km NE of Prato (191150 inhabitants)
55 Km NE of Scandicci (50609 inhabitants)
56 Km SW of Ravenna (159116 inhabitants)
61 Km E of Pistoia (90315 inhabitants)
76 Km W of Rimini (147750 inhabitants)
77 Km N of Arezzo (99543 inhabitants)
78 Km S of Ferrara (133155 inhabitants)
80 Km SE of Modena (184973 inhabitants)
93 Km SE of Carpi (70699 inhabitants)
94 Km N of Siena (53903 inhabitants)
95 Km E of Lucca (89046 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.8 2020-07-19
04:42:14
44.13 11.63 9 2020-07-19
04:50:11
Sala Sismica INGV-Roma 81150731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-19 04:42:14 ± 0.05
Latitude 44.13 ± 0.00
Longitude 11.63 ± 0.00
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81150731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 319
Semi-minor axis of confidence ellipse (meter) 302
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 68
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.70327
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 81150731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-19 04:50:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SMA1.EHZ. 2020-07-19T04:43:18.75 3.0 undecidable manual Sg 5.86 0
MN.TRI.HHZ. 2020-07-19T04:43:17.64 3.0 undecidable manual Sn -0.9 0
MN.TUE.HHZ. 2020-07-19T04:42:57.82 3.0 negative manual Pn -1.35 0
IV.LAV9.HHZ. 2020-07-19T04:42:56.11 3.0 undecidable manual Pn 0.36 0
IV.MBAL.EHZ. 2020-07-19T04:42:46.41 3.0 negative manual Pg 3.45 0
IV.PII.HHZ. 2020-07-19T04:42:32.09 3.0 negative manual P 0.21 0
IV.FNVD.HHZ. 2020-07-19T04:42:28.14 0.6 undecidable manual S 276 0.3615 50 0.23 47
IV.CSNT.HHZ. 2020-07-19T04:42:28.34 0.1 undecidable manual P 200 0.7033 50 0.33 86
IV.SSP9.EHZ. 2020-07-19T04:42:27.55 0.1 undecidable manual P 147 0.6682 50 0.14 90
IV.ASQU.HHZ. 2020-07-19T04:42:27.95 0.6 undecidable manual S 161 0.357 50 0.17 48
GU.POPM.HHZ. 2020-07-19T04:42:26.69 3.0 undecidable manual P -0.29 0
IV.RUFI.EHZ. 2020-07-19T04:42:26.39 0.3 undecidable manual S 196 0.3076 50 0.09 74
IV.CRE.HHZ. 2020-07-19T04:42:25.54 0.3 undecidable manual P 155 0.5657 50 -0.12 70
IV.SFI.EHZ. 2020-07-19T04:42:25.60 0.3 undecidable manual S 145 0.2788 50 0.13 74
IV.MTRZ.HHZ. 2020-07-19T04:42:24.24 0.3 undecidable manual S 321 0.2293 110 0.55 67
IV.RINC.HHZ. 2020-07-19T04:42:24.52 0.6 undecidable manual S 183 0.2482 108 0.15 49
IV.ZCCA.HHZ. 2020-07-19T04:42:24.74 0.1 undecidable manual P 295 0.5126 50 0 96
IV.SEI.HHZ. 2020-07-19T04:42:23.04 0.3 undecidable manual S 247 0.2077 112 0.13 75
IV.BRSN.EHZ. 2020-07-19T04:42:22.51 0.6 undecidable manual P 65 0.3588 50 0.4 46
IV.RONT.HHZ. 2020-07-19T04:42:22.80 0.3 undecidable manual S 225 0.197 113 0.26 73
IV.MPPT.EHZ. 2020-07-19T04:42:22.97 0.1 undecidable manual P 246 0.4227 50 -0.24 93
IV.RUFI.EHZ. 2020-07-19T04:42:21.03 0.3 undecidable manual P 196 0.3076 50 -0.21 72
IV.FNVD.HHZ. 2020-07-19T04:42:21.70 0.3 undecidable manual P 276 0.3615 50 -0.47 67
IV.ASQU.HHZ. 2020-07-19T04:42:21.89 0.3 undecidable manual P 161 0.357 50 -0.2 71
IV.SFI.EHZ. 2020-07-19T04:42:20.42 0.3 undecidable manual P 145 0.2788 50 -0.33 71
IV.RINC.HHZ. 2020-07-19T04:42:20.04 0.3 undecidable manual P 183 0.2482 108 -0.08 75
IV.FAEN.HNZ. 2020-07-19T04:42:20.07 0.6 undecidable manual P 49 0.2383 109 0.16 49
IV.IMOL.EHZ. 2020-07-19T04:42:20.13 0.3 undecidable manual P 20 0.2401 109 0.17 74
IV.BRIS.HHZ. 2020-07-19T04:42:20.34 0.3 undecidable manual S 48 0.1358 121 -0.09 76
IV.VISG.HHZ. 2020-07-19T04:42:20.66 0.1 undecidable manual S 292 0.1475 119 -0.16 100
IT.FAZ.HNZ. 2020-07-19T04:42:20.36 0.3 undecidable manual P 49 0.2509 108 0.17 73
IV.SEI.HHZ. 2020-07-19T04:42:19.09 0.1 undecidable manual P 247 0.2077 112 -0.19 98
IV.RONT.HHZ. 2020-07-19T04:42:19.18 0.3 undecidable manual P 225 0.197 113 0.12 75
IV.MTRZ.HHZ. 2020-07-19T04:42:19.92 0.3 undecidable manual P 321 0.2293 110 0.19 73
IV.VISG.HHZ. 2020-07-19T04:42:17.73 0.1 undecidable manual P 292 0.1475 119 -0.34 96
IV.BRIS.HHZ. 2020-07-19T04:42:17.55 0.1 undecidable manual P 48 0.1358 121 -0.29 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:2.3 0.001735 0.1 AML other m 2020-07-19T04:42:20.94
IV.BRIS.HHN. ML:2.6 0.003595 0.34 AML other m 2020-07-19T04:42:21.13
IV.VISG.HHN. ML:2.3 0.002015 1.62 AML other m 2020-07-19T04:42:21.99
IV.BRIS.HHE. ML:2.5 0.00303 0.72 AML other m 2020-07-19T04:42:24.13
IV.SEI.HHN. ML:2.6 0.00251 0.54 AML other m 2020-07-19T04:42:24.62
IV.SEI.HHE. ML:2.3 0.0013385 0.28 AML other m 2020-07-19T04:42:24.63
IV.RONT.HHN. ML:2.3 0.00135 1.68 AML other m 2020-07-19T04:42:25.91
IV.IMOL.HNN. ML:2.4 0.00152 0.88 AML other m 2020-07-19T04:42:26.44
IV.IMOL.HNE. ML:2.5 0.00184 0.14 AML other m 2020-07-19T04:42:26.06
IV.SFI.EHE. ML:1.7 0.000257 1.22 AML other m 2020-07-19T04:42:26.28
IV.SFI.EHN. ML:1.7 0.000261 0.94 AML other m 2020-07-19T04:42:26.85
IV.RINC.HHN. ML:1.8 0.000326 0.64 AML other m 2020-07-19T04:42:26.39
IV.RUFI.EHE. ML:1.7 0.0002255 0.72 AML other m 2020-07-19T04:42:26.89
IV.MTRZ.HHN. ML:2.3 0.001115 0.5 AML other m 2020-07-19T04:42:26.97
IV.RINC.HHE. ML:1.9 0.0004635 1.16 AML other m 2020-07-19T04:42:27.66
IV.RUFI.EHN. ML:1.5 0.0001253 0.8 AML other m 2020-07-19T04:42:27.82
IV.MTRZ.HHE. ML:2.2 0.000905 1.5 AML other m 2020-07-19T04:42:27.75
IV.RONT.HHE. ML:2.2 0.001245 1.58 AML other m 2020-07-19T04:42:28.09
IV.FNVD.HHE. ML:2 0.0003805 0.74 AML other m 2020-07-19T04:42:28.53
IV.FNVD.HHN. ML:2.1 0.0004355 1.12 AML other m 2020-07-19T04:42:30.79
IV.ASQU.HHE. ML:1.8 0.0001975 0.32 AML other m 2020-07-19T04:42:30.25
IV.MPPT.EHE. ML:1.4 8.025E-5 0.66 AML other m 2020-07-19T04:42:31.39
IV.BRSN.HNE. ML:2.4 0.0008095 1.24 AML other m 2020-07-19T04:42:31.88
IV.BRSN.EHE. ML:2.3 0.0007715 1.22 AML other m 2020-07-19T04:42:31.88
IV.ASQU.HHN. ML:1.8 0.0002 1.7 AML other m 2020-07-19T04:42:31.13
IV.MPPT.EHN. ML:1.5 9.205E-5 0.64 AML other m 2020-07-19T04:42:36.54
IV.CRE.HHE. ML:1.6 6.785E-5 0.62 AML other m 2020-07-19T04:42:36.45
IV.BRSN.HNN. ML:2.3 0.0006905 0.82 AML other m 2020-07-19T04:42:37.57
IV.BRSN.EHN. ML:2.2 0.000621 0.82 AML other m 2020-07-19T04:42:37.58
IV.CRE.HHN. ML:1.8 0.0001255 1.04 AML other m 2020-07-19T04:42:39.00
GU.POPM.HHE. ML:1.7 8.245E-5 0.28 AML other m 2020-07-19T04:42:39.85
IV.CSNT.HHE. ML:1.6 5.985E-5 0.4 AML other m 2020-07-19T04:42:42.47
GU.POPM.HHN. ML:1.6 6.645E-5 0.74 AML other m 2020-07-19T04:42:42.76
IV.CSNT.HHN. ML:1.6 5.795E-5 0.7 AML other m 2020-07-19T04:42:42.52
IV.SSP9.EHE. ML:1.6 5.384E-5 0.42 AML other m 2020-07-19T04:42:45.47
IV.PII.HHE. ML:1.6 4.22E-5 1.48 AML other m 2020-07-19T04:42:48.81
IV.PII.HHN. ML:1.7 5.55E-5 1.62 AML other m 2020-07-19T04:42:54.95
IV.SSP9.EHN. ML:1.5 4.775E-5 1.58 AML other m 2020-07-19T04:42:56.93
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download