Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 22-02-2023 and time 02:37:43 (UTC) in region 7 km SE Cotignola (RA)

A magnitude ML 1.6 earthquake occured in region: 7 km SE Cotignola (RA), on

  • 22-02-2023 02:37:43 (UTC)
  • 22-02-2023 03:37:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.3270, 11.9680 at 25 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
Cotignola RA 7 7474 7474
Russi RA 7 12247 19721
Faenza RA 8 58541 78262
Bagnacavallo RA 10 16739 95001
Solarolo RA 11 4488 99489
Lugo RA 11 32390 131879
Forlì FC 13 117913 249792
Bagnara di Romagna RA 13 2429 252221
Castel Bolognese RA 13 9554 261775
Mordano BO 15 4760 266535
Sant'Agata sul Santerno RA 15 2862 269397
Fusignano RA 16 8222 277619
Castrocaro Terme e Terra del Sole FC 17 6426 284045
Massa Lombarda RA 17 10653 294698
Brisighella RA 20 7639 302337
Forlimpopoli FC 20 13290 315627

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km NE of Faenza (58541 inhabitants)
13 Km NW of Forlì (117913 inhabitants)
20 Km E of Imola (69797 inhabitants)
21 Km W of Ravenna (159116 inhabitants)
30 Km NW of Cesena (96758 inhabitants)
53 Km E of Bologna (386663 inhabitants)
56 Km NW of Rimini (147750 inhabitants)
63 Km SE of Ferrara (133155 inhabitants)
84 Km NE of Firenze (382808 inhabitants)
84 Km S of Rovigo (51867 inhabitants)
85 Km NE of Prato (191150 inhabitants)
89 Km NW of Pesaro (94582 inhabitants)
89 Km NE of Scandicci (50609 inhabitants)
90 Km E of Modena (184973 inhabitants)
94 Km E of Pistoia (90315 inhabitants)
96 Km N of Arezzo (99543 inhabitants)
100 Km NW of Fano (60888 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 2023-02-22
02:37:43		 44.3267 11.9678 25 2024-03-01
17:18:07		 Bollettino Sismico Italiano INGV 117189971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-22 02:37:43 ± 0.34
Latitude 44.3267 ± 0.0180
Longitude 11.9678 ± 0.0176
Depth (km) 25 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 117189971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1852
Semi-minor axis of confidence ellipse (meter) 1014
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 16
Circular confidence region, given by single value of horizontal uncertainty (meter) 1850.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 184
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) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.06205
Epicentral distance of station farthest from the epicenter (degree) 0.95598
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 117189971
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-11-07 03:12:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.OSSC.HHZ. 2023-02-22T02:38:03.21 0.3 undecidable manual P 213 106.116 99 1.41 38
IV.VMGN.HHN. 2023-02-22T02:38:02.20 0.6 undecidable manual S 220 53.9016 108 0.88 36
IV.SFI.EHZ. 2023-02-22T02:38:00.00 0.3 undecidable manual S 192 47.8188 111 0.22 69
IV.CRE.HHZ. 2023-02-22T02:37:57.93 0.3 undecidable manual P 181 78.5658 102 0.32 63
IV.LMD.HHZ. 2023-02-22T02:37:56.24 0.6 undecidable manual S 217 34.5432 120 -0.34 46
IV.CPGN.EHZ. 2023-02-22T02:37:55.76 0.3 undecidable manual P 154 64.6908 105 0.22 66
IV.BOSL.HHE. 2023-02-22T02:37:55.44 0.3 undecidable manual P 227 64.491 105 -0.06 69
IV.RUFI.EHE. 2023-02-22T02:37:55.48 0.3 undecidable manual P 214 65.3901 105 -0.15 68
IV.SEI.HHZ. 2023-02-22T02:37:54.43 0.3 undecidable manual P 238 57.0984 107 0.02 71
IV.IMOL.EHZ. 2023-02-22T02:37:54.00 0.6 undecidable manual S 282 18.2706 140 0.81 41
IV.VMGN.HHN. 2023-02-22T02:37:53.48 0.3 undecidable manual P 220 53.9016 108 -0.46 65
IV.MTRZ.HHZ. 2023-02-22T02:37:53.34 0.3 undecidable manual P 268 43.1235 114 0.95 54
IV.BRIS.HHZ. 2023-02-22T02:37:53.19 0.6 undecidable manual S 235 19.5693 137 -0.24 48
IV.SFI.EHZ. 2023-02-22T02:37:52.64 0.3 undecidable manual P 192 47.8188 111 -0.41 66
IV.BRSN.EHZ. 2023-02-22T02:37:52.80 0.3 undecidable manual S 118 10.0788 156 0.79 62
IT.FAZ.HNZ. 2023-02-22T02:37:51.78 0.6 undecidable manual S 243 6.8931 163 0.07 51
Y1.T1718.HNE. 2023-02-22T02:37:50.49 0.3 undecidable manual P 106 27.3504 127 0.22 71
IV.LMD.HHZ. 2023-02-22T02:37:50.51 0.3 undecidable manual P 217 34.5432 120 -0.69 62
Y1.T1756.HNZ. 2023-02-22T02:37:50.51 0.3 undecidable manual P 160 31.4463 122 -0.29 70
IV.IMOL.EHZ. 2023-02-22T02:37:49.20 0.1 positive manual P 282 18.2706 140 -0.05 100
IV.BRIS.HHZ. 2023-02-22T02:37:48.90 0.1 negative manual P 235 19.5693 137 -0.48 91
IV.BRSN.EHZ. 2023-02-22T02:37:48.12 0.3 undecidable manual P 118 10.0788 156 -0.45 70
IT.FAZ.HNZ. 2023-02-22T02:37:47.83 0.1 positive manual P 243 6.8931 163 -0.56 90
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BRSN.EHE. ML:1.8 0.00033999999999999997 0.24 AML other m 2023-02-22T02:37:53.88
IV.BRSN.HNE. ML:1.9 0.000431 0.24 AML other m 2023-02-22T02:37:53.77
IV.BRSN.HNN. ML:2.0 0.0005525 0.22 AML other m 2023-02-22T02:37:53.84
IV.BRSN.EHN. ML:2.0 0.0005925 0.62 AML other m 2023-02-22T02:37:53.84
IV.IMOL.HNE. ML:1.9 0.000366 0.2 AML other m 2023-02-22T02:37:54.48
IV.IMOL.HNN. ML:2.2 0.000731 0.24 AML other m 2023-02-22T02:37:54.62
IV.BRIS.HHN. ML:1.2 0.00007395000000000001 0.58 AML other m 2023-02-22T02:37:55.98
IV.BRIS.HHE. ML:1.2 0.00008460000000000001 1.7 AML other m 2023-02-22T02:37:56.07
IV.LMD.HHN. ML:1.5 0.00010395 0.12 AML other m 2023-02-22T02:37:57.14
IV.LMD.HHE. ML:1.4 0.0000851 0.6 AML other m 2023-02-22T02:38:02.65
IV.SEI.HHE. ML:1.4 0.000056550000000000006 0.48 AML other m 2023-02-22T02:38:07.42
IV.SEI.HHN. ML:1.6 0.00007960000000000001 0.48 AML other m 2023-02-22T02:38:07.49
IV.CRE.HHE. ML:1.2 0.00001955 0.58 AML other m 2023-02-22T02:38:16.57
IV.CRE.HHN. ML:1.4 0.000032 0.3 AML other m 2023-02-22T02:38:16.38
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