Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 26-06-2022 and time 07:22:28 (UTC) in region 1 km NW Casola Valsenio (RA)

A magnitude ML 1.6 earthquake occured in region: 1 km NW Casola Valsenio (RA), on

  • 26-06-2022 07:22:28 (UTC)
  • 26-06-2022 09:22:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2330, 11.6120 at 23 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
Casola Valsenio RA 1 2617 2617
Fontanelice BO 5 1943 4560
Borgo Tossignano BO 5 3288 7848
Casalfiumanese BO 7 3438 11286
Castel del Rio BO 9 1246 12532
Riolo Terme RA 10 5720 18252
Brisighella RA 13 7639 25891
Palazzuolo sul Senio FI 14 1154 27045
Dozza BO 14 6652 33697
Imola BO 16 69797 103494
Modigliana FC 17 4560 108054
Marradi FI 17 3139 111193
Castel Bolognese RA 18 9554 120747
Castel San Pietro Terme BO 19 20811 141558
Monterenzio BO 19 6035 147593
Tredozio FC 20 1212 148805

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km SW of Imola (69797 inhabitants)
23 Km W of Faenza (58541 inhabitants)
34 Km W of Forlì (117913 inhabitants)
36 Km SE of Bologna (386663 inhabitants)
51 Km W of Ravenna (159116 inhabitants)
52 Km W of Cesena (96758 inhabitants)
57 Km NE of Prato (191150 inhabitants)
59 Km NE of Firenze (382808 inhabitants)
63 Km NE of Scandicci (50609 inhabitants)
65 Km NE of Pistoia (90315 inhabitants)
67 Km S of Ferrara (133155 inhabitants)
71 Km SE of Modena (184973 inhabitants)
79 Km W of Rimini (147750 inhabitants)
84 Km SE of Carpi (70699 inhabitants)
88 Km N of Arezzo (99543 inhabitants)
94 Km SE of Reggio nell'Emilia (171345 inhabitants)
94 Km S of Rovigo (51867 inhabitants)
99 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 1.6 2022-06-26
07:22:28		 44.2327 11.6117 23 2023-01-31
19:03:41		 Bollettino Sismico Italiano INGV 109566311
Reviewed
Rev100 		ML 1.6 2022-06-26
07:22:29		 44.1897 11.5983 20 2022-06-26
08:24:20		 Sala Sismica INGV-Roma 106507621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-06-26 07:22:28 ± 0.37
Latitude 44.2327 ± 0.0099
Longitude 11.6117 ± 0.0126
Depth (km) 23 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 109566311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 999
Semi-minor axis of confidence ellipse (meter) 629
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 101
Circular confidence region, given by single value of horizontal uncertainty (meter) 1000.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.13400
Epicentral distance of station farthest from the epicenter (degree) 0.63042
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 109566311
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-09-11 04:54:12

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 106507621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-06-26 08:24:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRMI.HHZ. 2022-06-26T07:22:50.60 0.3 undecidable manual S 226 69.9744 102 0.46 67
IV.MOCL.EHZ. 2022-06-26T07:22:43.20 0.3 undecidable manual S 234 42.624 111 0.08 76
IV.RUFI.EHE. 2022-06-26T07:22:43.80 0.6 undecidable manual S 191 44.5221 110 0.2 49
IV.SFI.EHZ. 2022-06-26T07:22:43.10 0.3 undecidable manual S 153 40.9257 112 0.4 71
IV.BOSL.HHE. 2022-06-26T07:22:42.60 0.3 undecidable manual S 210 38.4282 114 0.51 69
IV.CRMI.HHZ. 2022-06-26T07:22:41.33 0.3 undecidable manual P 226 69.9744 102 0.27 70
IV.SEI.HHZ. 2022-06-26T07:22:39.60 0.3 undecidable manual S 226 28.2495 123 -0.09 79
IV.IMOL.EHZ. 2022-06-26T07:22:38.40 0.3 undecidable manual S 36 17.4714 138 0.91 63
IV.MTRZ.HHZ. 2022-06-26T07:22:38.00 0.3 undecidable manual S 301 17.2716 138 0.55 72
IV.LMD.HHZ. 2022-06-26T07:22:37.40 0.3 undecidable manual S 156 18.87 136 -0.33 76
IV.RUFI.EHE. 2022-06-26T07:22:37.36 0.3 undecidable manual P 191 44.5221 110 0.07 76
IV.BOSL.HHE. 2022-06-26T07:22:36.65 0.3 undecidable manual P 210 38.4282 114 0.23 75
IV.MOCL.EHZ. 2022-06-26T07:22:36.64 0.3 undecidable manual P 234 42.624 111 -0.37 72
IV.SFI.EHZ. 2022-06-26T07:22:36.44 0.3 undecidable manual P 153 40.9257 112 -0.33 73
IV.VISG.HHZ. 2022-06-26T07:22:36.34 0.3 undecidable manual S 251 14.874 143 -0.71 68
IV.SEI.HHZ. 2022-06-26T07:22:34.38 0.3 undecidable manual P 226 28.2495 123 -0.65 68
IV.IMOL.EHZ. 2022-06-26T07:22:34.05 0.3 undecidable manual P 36 17.4714 138 0.29 77
IV.LMD.HHZ. 2022-06-26T07:22:33.53 0.1 undecidable manual P 156 18.87 136 -0.37 100
IV.MTRZ.HHZ. 2022-06-26T07:22:33.83 0.3 undecidable manual P 301 17.2716 138 0.09 80
IV.VISG.HHZ. 2022-06-26T07:22:32.76 0.1 undecidable manual P 251 14.874 143 -0.75 89
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:1.7 0.00028471955000000003 0.1216 AML other m 2022-06-26T07:22:37.13
IV.VISG.HHN. ML:1.6 0.0002563552 0.1024 AML other m 2022-06-26T07:22:37.08
IV.LMD.HHN. ML:1.9 0.00040047054999999996 0.2816 AML other m 2022-06-26T07:22:38.18
IV.LMD.HHE. ML:2.0 0.00050271705 0.1184 AML other m 2022-06-26T07:22:38.34
IV.MTRZ.HNE. ML:2.0 0.0005494691000000001 0.4896 AML other m 2022-06-26T07:22:39.56
IV.MTRZ.HHE. ML:1.5 0.00018209085 0.48 AML other m 2022-06-26T07:22:39.56
IV.IMOL.EHE. ML:1.3 0.00009829372 0.2016 AML other m 2022-06-26T07:22:40.14
IV.IMOL.HNN. ML:1.7 0.0002568404 0.2176 AML other m 2022-06-26T07:22:40.40
IV.MTRZ.HNN. ML:2.0 0.00048291735000000004 0.2816 AML other m 2022-06-26T07:22:40.32
IV.MTRZ.HHN. ML:2.0 0.0004892113 0.2816 AML other m 2022-06-26T07:22:40.32
IV.IMOL.HNE. ML:1.6 0.0002338363708 0.16 AML other m 2022-06-26T07:22:40.51
IV.SEI.HHE. ML:1.6 0.00017380909999999998 0.2624 AML other m 2022-06-26T07:22:40.51
IV.IMOL.EHN. ML:1.2 0.00007749020500000001 1.6384 AML other m 2022-06-26T07:22:40.91
IV.SFI.HNN. ML:1.6 0.0001162312 1.2096 AML other m 2022-06-26T07:22:41.89
IV.SEI.HHN. ML:1.8 0.00028087509999999996 0.2208 AML other m 2022-06-26T07:22:41.75
IV.MOCL.EHE. ML:1.5 0.00008687719 1.6 AML other m 2022-06-26T07:22:43.01
IV.SFI.EHN. ML:1.4 0.000064288405 0.3392 AML other m 2022-06-26T07:22:44.56
IV.MOCL.EHN. ML:1.3 0.000057583019999999995 0.2624 AML other m 2022-06-26T07:22:44.81
IV.SFI.EHE. ML:1.5 0.00008725471 0.4 AML other m 2022-06-26T07:22:45.05
IV.SFI.HNE. ML:1.6 0.00010558385 0.56 AML other m 2022-06-26T07:22:49.32
IV.CRMI.HHN. ML:1.2 0.0000245296 0.3808 AML other m 2022-06-26T07:22:51.44
IV.CRMI.HNE. ML:2.0 0.00014192905 0.8384 AML other m 2022-06-26T07:22:51.76
IV.CRMI.HHE. ML:1.2 0.000026522570000000004 0.32 AML other m 2022-06-26T07:22:52.00
IV.CRMI.HNN. ML:2.3 0.00032099275 1.5488 AML other m 2022-06-26T07:22:56.15
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