Earthquake with magnitude of ML 1.8 on date 23-07-2020 and time 22:26:52 (Italy) in region 3 km N Predappio (FC)

A magnitude ML 1.8 earthquake occured in region: 3 km N Predappio (FC), on

  • 23-07-2020 20:26:52 (UTC)
  • 23-07-2020 22:26:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.13, 11.97 at 10 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
Predappio FC 3 6346 6346
Castrocaro Terme e Terra del Sole FC 5 6426 12772
Dovadola FC 7 1653 14425
Meldola FC 7 9970 24395
Forlì FC 12 117913 142308
Rocca San Casciano FC 13 1910 144218
Bertinoro FC 13 11059 155277
Civitella di Romagna FC 14 3786 159063
Forlimpopoli FC 14 13290 172353
Modigliana FC 14 4560 176913
Galeata FC 16 2516 179429
Faenza RA 19 58541 237970
Tredozio FC 19 1212 239182
Brisighella RA 19 7639 246821
Portico e San Benedetto FC 19 756 247577

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km SW of Forlì (117913 inhabitants)
19 Km SE of Faenza (58541 inhabitants)
22 Km W of Cesena (96758 inhabitants)
32 Km SE of Imola (69797 inhabitants)
37 Km SW of Ravenna (159116 inhabitants)
48 Km W of Rimini (147750 inhabitants)
64 Km SE of Bologna (386663 inhabitants)
70 Km NE of Firenze (382808 inhabitants)
74 Km N of Arezzo (99543 inhabitants)
75 Km E of Prato (191150 inhabitants)
76 Km NE of Scandicci (50609 inhabitants)
79 Km W of Pesaro (94582 inhabitants)
83 Km SE of Ferrara (133155 inhabitants)
87 Km E of Pistoia (90315 inhabitants)
90 Km W of Fano (60888 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 2020-07-23
20:26:52
44.13 11.97 10 2020-07-23
20:35:58
Sala Sismica INGV-Roma 81286011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-23 20:26:52 ± 0.08
Latitude 44.13 ± 0.00
Longitude 11.97 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81286011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 437
Semi-minor axis of confidence ellipse (meter) 430
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 7
Circular confidence region, given by single value of horizontal uncertainty (meter) 440
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.81209
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 21
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 81286011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-23 20:35:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
ST.CARE.EHZ. 2020-07-23T20:28:08.50 3.0 undecidable manual Sg 1.93 0
SI.BOSI.HHZ. 2020-07-23T20:28:03.17 3.0 undecidable manual Sn -2.16 0
IV.FREG.EHZ. 2020-07-23T20:27:28.11 3.0 negative manual Pg 1.68 0
IV.FDMO.HHZ. 2020-07-23T20:27:17.16 3.0 undecidable manual P -1.45 0
GU.POPM.HHZ. 2020-07-23T20:27:10.72 3.0 positive manual P 0.24 0
IV.SEI.HHZ. 2020-07-23T20:27:08.12 0.6 undecidable manual S 260 0.4461 50 -0.05 48
IV.RUFI.EHZ. 2020-07-23T20:27:08.64 0.3 undecidable manual S 229 0.4425 50 0.57 63
IV.RONT.HHZ. 2020-07-23T20:27:07.53 0.3 undecidable manual S 251 0.4101 50 0.44 66
IV.ATVO.HHZ. 2020-07-23T20:27:07.57 0.6 undecidable manual P 157 0.8121 50 -0.12 43
IV.VISG.HHZ. 2020-07-23T20:27:06.34 0.3 undecidable manual S 279 0.3885 50 -0.12 71
IV.RINC.HHZ. 2020-07-23T20:27:05.75 0.3 undecidable manual S 227 0.3579 50 0.19 71
IV.PIEI.HHZ. 2020-07-23T20:27:05.67 0.3 undecidable manual P 145 0.7213 50 -0.46 62
IV.ASQU.HHZ. 2020-07-23T20:27:05.74 0.3 undecidable manual S 201 0.3597 50 0.15 71
IV.NARO.HHZ. 2020-07-23T20:27:05.16 0.6 undecidable manual P 140 0.6808 50 -0.29 43
IV.IMOL.EHZ. 2020-07-23T20:27:03.69 0.3 undecidable manual S 324 0.2806 50 0.44 68
IV.PE3.EHZ. 2020-07-23T20:27:03.73 0.3 undecidable manual P 139 0.5765 50 0.06 69
IV.SFI.EHZ. 2020-07-23T20:27:02.64 0.3 undecidable manual S 201 0.2437 50 0.48 68
IV.PARC.HHZ. 2020-07-23T20:27:02.66 0.3 undecidable manual P 158 0.5198 50 -0.03 70
IV.CRE.HHZ. 2020-07-23T20:27:02.41 0.3 undecidable manual P 182 0.5126 50 -0.16 69
IV.CPGN.EHZ. 2020-07-23T20:27:01.21 0.1 undecidable manual P 143 0.4155 50 0.31 91
IV.MTRZ.HHZ. 2020-07-23T20:27:01.04 0.3 undecidable manual P 295 0.4308 50 -0.12 70
IV.SEI.HHZ. 2020-07-23T20:27:01.03 0.3 undecidable manual P 260 0.4461 50 -0.39 66
IV.RUFI.EHZ. 2020-07-23T20:27:00.99 0.3 undecidable manual P 229 0.4425 50 -0.38 67
IV.BRSN.EHZ. 2020-07-23T20:27:00.12 0.3 undecidable manual S 27 0.1718 117 0.46 69
IV.RSM2.HHE. 2020-07-23T20:27:00.85 0.3 undecidable manual P 119 0.3921 50 0.35 68
IV.RONT.HHZ. 2020-07-23T20:27:00.53 0.3 undecidable manual P 251 0.4101 50 -0.28 69
IV.LMD.HHZ. 2020-07-23T20:27:00.80 0.3 undecidable manual S 254 0.197 114 0.26 72
IV.ASQU.HHZ. 2020-07-23T20:26:59.84 0.3 undecidable manual P 201 0.3597 50 -0.1 72
IV.BLLA.EHE. 2020-07-23T20:26:59.75 0.6 undecidable manual P 88 0.3588 50 -0.18 47
IV.BRIS.HHZ. 2020-07-23T20:26:59.92 0.3 undecidable manual S 302 0.1736 117 0.2 73
IV.RINC.HHZ. 2020-07-23T20:26:59.69 0.3 undecidable manual P 227 0.3579 50 -0.23 70
IV.VISG.HHZ. 2020-07-23T20:26:59.68 0.3 undecidable manual P 279 0.3885 50 -0.76 59
IV.IMOL.EHZ. 2020-07-23T20:26:58.40 0.3 undecidable manual P 324 0.2806 50 -0.19 72
IV.SFI.EHZ. 2020-07-23T20:26:57.92 0.1 undecidable manual P 201 0.2437 50 -0.04 99
IV.LMD.HHZ. 2020-07-23T20:26:56.85 0.3 undecidable manual P 254 0.197 114 -0.17 73
IV.BRIS.HHZ. 2020-07-23T20:26:56.36 0.1 undecidable manual P 302 0.1736 117 -0.19 97
IV.BRSN.EHZ. 2020-07-23T20:26:56.58 0.1 undecidable manual P 27 0.1718 117 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRIS.HHE. ML:1.7 0.0004025 0.62 AML other m 2020-07-23T20:27:00.41
IV.BRIS.HHN. ML:1.6 0.000303 0.66 AML other m 2020-07-23T20:27:00.54
IV.BRSN.EHN. ML:2 0.000828 0.54 AML other m 2020-07-23T20:27:01.49
IV.BRSN.EHE. ML:2 0.0008535 0.4 AML other m 2020-07-23T20:27:01.45
IV.LMD.HHN. ML:2.2 0.001095 0.26 AML other m 2020-07-23T20:27:01.47
IV.LMD.HHE. ML:2.2 0.001135 0.18 AML other m 2020-07-23T20:27:01.41
IV.SFI.EHE. ML:1.8 0.000354 0.16 AML other m 2020-07-23T20:27:03.56
IV.SFI.EHN. ML:1.7 0.000279 0.5 AML other m 2020-07-23T20:27:03.40
IV.IMOL.HNN. ML:2.1 0.0006345 0.32 AML other m 2020-07-23T20:27:05.75
IV.IMOL.HNE. ML:2.4 0.00121 0.22 AML other m 2020-07-23T20:27:05.76
IV.RINC.HHE. ML:1.9 0.000274 0.36 AML other m 2020-07-23T20:27:06.63
IV.ASQU.HHN. ML:1.6 0.000148 0.86 AML other m 2020-07-23T20:27:07.64
IV.ASQU.HHE. ML:1.7 0.000164 0.22 AML other m 2020-07-23T20:27:07.64
IV.VISG.HHN. ML:1.8 0.0001825 0.94 AML other m 2020-07-23T20:27:08.08
IV.RONT.HHE. ML:2.1 0.0003845 0.54 AML other m 2020-07-23T20:27:08.38
IV.VISG.HHE. ML:1.5 0.0001077 0.14 AML other m 2020-07-23T20:27:08.22
IV.RINC.HHN. ML:1.5 0.0001185 0.94 AML other m 2020-07-23T20:27:08.19
IV.RONT.HHN. ML:2.1 0.0003535 0.64 AML other m 2020-07-23T20:27:08.66
IV.SEI.HHE. ML:2.1 0.0003125 0.22 AML other m 2020-07-23T20:27:09.18
IV.SEI.HHN. ML:2.2 0.000371 1.26 AML other m 2020-07-23T20:27:09.08
IV.CPGN.EHN. ML:1.7 0.000142 0.58 AML other m 2020-07-23T20:27:11.06
IV.CPGN.EHE. ML:1.6 0.00012115 0.6 AML other m 2020-07-23T20:27:12.40
IV.MTRZ.HHE. ML:1.6 0.000121 0.36 AML other m 2020-07-23T20:27:12.27
IV.PARC.HHN. ML:1.8 0.000137 0.34 AML other m 2020-07-23T20:27:12.80
IV.MTRZ.HHN. ML:1.6 0.0001154 0.26 AML other m 2020-07-23T20:27:12.80
IV.CRE.HHE. ML:1.7 0.00010235 0.56 AML other m 2020-07-23T20:27:12.55
IV.CRE.HHN. ML:1.9 0.000171 1.72 AML other m 2020-07-23T20:27:13.04
IV.PARC.HHE. ML:1.5 6.59E-5 0.34 AML other m 2020-07-23T20:27:13.46
IV.PE3.EHN. ML:2.3 0.0004115 0.34 AML other m 2020-07-23T20:27:15.72
IV.PE3.EHE. ML:2.3 0.0003545 1.54 AML other m 2020-07-23T20:27:16.05
IV.PIEI.HHN. ML:1.3 2.315E-5 0.18 AML other m 2020-07-23T20:27:19.78
IV.FDMO.HHE. ML:1.3 1.0505E-5 1.06 AML other m 2020-07-23T20:27:22.21
IV.ATVO.HHE. ML:1.6 5.08E-5 1 AML other m 2020-07-23T20:27:22.91
IV.PIEI.HHE. ML:1.3 3.165E-5 0.72 AML other m 2020-07-23T20:27:23.43
IV.ATVO.HHN. ML:1.3 2.425E-5 1.16 AML other m 2020-07-23T20:27:26.67
GU.POPM.HHN. ML:1.4 2.7E-5 1.24 AML other m 2020-07-23T20:27:27.77
GU.POPM.HHE. ML:1.3 2.105E-5 0.22 AML other m 2020-07-23T20:27:28.43
IV.FREG.EHE. ML:2.9 0.000213 0.42 AML other m 2020-07-23T20:27:31.08
IV.FDMO.HHN. ML:1.5 1.395E-5 1 AML other m 2020-07-23T20:27:43.92
ST.CARE.EHN. ML:3 0.0001625 1.56 AML other m 2020-07-23T20:28:09.07
ST.CARE.EHE. ML:3 0.0001555 1.58 AML other m 2020-07-23T20:28:09.07
IV.FREG.EHN. ML:1.3 2.7965E-6 0.46 AML other m 2020-07-23T20:28:10.23
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