Earthquake with magnitude of ML 1.2 on date 07-07-2020 and time 22:41:34 (Italy) in region 2 km SE Casola Valsenio (RA)

A magnitude ML 1.2 earthquake occured in region: 2 km SE Casola Valsenio (RA), on

  • 07-07-2020 20:41:34 (UTC)
  • 07-07-2020 22:41:34 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.21, 11.64 at 27 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Casola Valsenio RA 2 2617 2617
Fontanelice BO 8 1943 4560
Borgo Tossignano BO 8 3288 7848
Casalfiumanese BO 10 3438 11286
Riolo Terme RA 10 5720 17006
Brisighella RA 10 7639 24645
Castel del Rio BO 11 1246 25891
Palazzuolo sul Senio FI 13 1154 27045
Modigliana FC 14 4560 31605
Marradi FI 15 3139 34744
Dozza BO 17 6652 41396
Tredozio FC 17 1212 42608
Imola BO 17 69797 112405
Castel Bolognese RA 18 9554 121959

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SW of Imola (69797 inhabitants)
21 Km W of Faenza (58541 inhabitants)
32 Km W of Forlì (117913 inhabitants)
39 Km SE of Bologna (386663 inhabitants)
49 Km W of Cesena (96758 inhabitants)
50 Km W of Ravenna (159116 inhabitants)
57 Km NE of Prato (191150 inhabitants)
58 Km NE of Firenze (382808 inhabitants)
62 Km NE of Scandicci (50609 inhabitants)
65 Km E of Pistoia (90315 inhabitants)
70 Km S of Ferrara (133155 inhabitants)
75 Km SE of Modena (184973 inhabitants)
76 Km W of Rimini (147750 inhabitants)
85 Km N of Arezzo (99543 inhabitants)
87 Km SE of Carpi (70699 inhabitants)
96 Km S of Rovigo (51867 inhabitants)
97 Km SE of Reggio nell'Emilia (171345 inhabitants)
100 Km E 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 1.2 2020-07-07
20:41:34
44.21 11.64 27 2020-11-19
12:36:57
Bollettino Sismico Italiano INGV 81752051
Reviewed
Rev100
ML 1.4 2020-07-07
20:41:34
44.22 11.62 28 2020-07-07
20:57:03
Sala Sismica INGV-Roma 80865351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-07 20:41:34 ± 0.37
Latitude 44.21 ± 0.01
Longitude 11.64 ± 0.02
Depth (km) 27 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 81752051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1539
Semi-minor axis of confidence ellipse (meter) 1008
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 122
Circular confidence region, given by single value of horizontal uncertainty (meter) 1540
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 181
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.09083
Epicentral distance of station farthest from the epicenter (degree) 0.32555
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.4
Num. used stations 14
Type of magnitude ML
Reference to an origin 80865351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-07 20:57:03

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 81752051
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-08 01:42:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RINC.HHE. 2020-07-07T20:41:47.89 0.6 undecidable manual S 184 0.3256 121 0.16 49
IV.RONT.HHZ. 2020-07-07T20:41:46.65 0.6 undecidable manual S 214 0.2644 127 0.44 46
IV.SEI.HHZ. 2020-07-07T20:41:46.49 0.6 undecidable manual S 232 0.2563 128 0.47 46
IV.BRIS.HHZ. 2020-07-07T20:41:43.98 0.6 undecidable manual S 82 0.0908 157 1 38
IV.LMD.HHZ. 2020-07-07T20:41:43.39 0.3 undecidable manual S 160 0.1421 146 -0.31 73
IV.VISG.HHZ. 2020-07-07T20:41:43.55 0.3 undecidable manual S 261 0.1493 145 -0.27 74
IV.RINC.HHE. 2020-07-07T20:41:42.14 0.1 undecidable manual P 184 0.3256 121 0.04 100
IV.RONT.HHZ. 2020-07-07T20:41:41.28 0.3 undecidable manual P 214 0.2644 127 0.06 75
IV.SEI.HHZ. 2020-07-07T20:41:40.96 0.3 undecidable manual P 232 0.2563 128 -0.15 74
IV.LMD.HHZ. 2020-07-07T20:41:39.37 0.1 undecidable manual P 160 0.1421 146 -0.41 95
IV.VISG.HHZ. 2020-07-07T20:41:39.51 0.1 undecidable manual P 261 0.1493 145 -0.33 97
IV.BRIS.HHZ. 2020-07-07T20:41:39.62 0.1 negative manual P 82 0.0908 157 0.26 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHN. ML:1 4.308621E-5 0.2688 AML other m 2020-07-07T20:41:43.60
IV.LMD.HHE. ML:0.8 3.504868E-5 0.2816 AML other m 2020-07-07T20:41:43.76
IV.VISG.HHN. ML:0.9 3.636851E-5 0.1024 AML other m 2020-07-07T20:41:43.81
IV.VISG.HHE. ML:0.7 2.426414E-5 0.3968 AML other m 2020-07-07T20:41:43.69
IV.BRIS.HHE. ML:1.4 0.00013962435 0.1152 AML other m 2020-07-07T20:41:44.28
IV.BRIS.HHN. ML:1.4 0.000140751 0.256 AML other m 2020-07-07T20:41:44.36
IV.FIR.HHE. ML:2 0.0001938254 0.0512 AML other m 2020-07-07T20:41:46.69
IV.RONT.HHE. ML:1.2 6.5868145E-5 0.3968 AML other m 2020-07-07T20:41:46.99
IV.FIR.HHN. ML:1.8 0.00011458725 0.1408 AML other m 2020-07-07T20:41:48.48
IV.BRIS.HNE. ML:1.4 0.0001501163 0.7456 AML other m 2020-07-07T20:41:48.17
IV.RONT.HHN. ML:1.2 5.455388E-5 0.3072 AML other m 2020-07-07T20:41:49.20
IV.BRIS.HNN. ML:1.6 0.0002067396 0.896 AML other m 2020-07-07T20:41:59.56
IV.FIR.HNN. ML:2 0.0002063703 0.6272 AML other m 2020-07-07T20:42:04.06
IV.FIR.HNE. ML:2 0.0001790124 0.4128 AML other m 2020-07-07T20:42:17.68
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