Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 20-05-2022 and time 10:26:48 (Italy) in region 4 km NE Palazzuolo sul Senio (FI)

A magnitude ML 2.1 earthquake occured in region: 4 km NE Palazzuolo sul Senio (FI), on

  • 20-05-2022 08:26:48 (UTC)
  • 20-05-2022 10:26:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1420, 11.5850 at 9 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
Palazzuolo sul Senio FI 4 1154 1154
Marradi FI 8 3139 4293
Casola Valsenio RA 10 2617 6910
Castel del Rio BO 10 1246 8156
Fontanelice BO 13 1943 10099
Tredozio FC 15 1212 11311
Borgo Tossignano BO 15 3288 14599
Firenzuola FI 17 4726 19325
Modigliana FC 17 4560 23885
Brisighella RA 17 7639 31524
Casalfiumanese BO 18 3438 34962
Riolo Terme RA 19 5720 40682

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km SW of Imola (69797 inhabitants)
29 Km SW of Faenza (58541 inhabitants)
38 Km W of Forlì (117913 inhabitants)
44 Km SE of Bologna (386663 inhabitants)
49 Km NE of Prato (191150 inhabitants)
49 Km NE of Firenze (382808 inhabitants)
53 Km W of Cesena (96758 inhabitants)
53 Km NE of Scandicci (50609 inhabitants)
58 Km SW of Ravenna (159116 inhabitants)
58 Km E of Pistoia (90315 inhabitants)
77 Km SE of Modena (184973 inhabitants)
77 Km S of Ferrara (133155 inhabitants)
79 Km NW of Arezzo (99543 inhabitants)
79 Km W of Rimini (147750 inhabitants)
90 Km SE of Carpi (70699 inhabitants)
93 Km E of Lucca (89046 inhabitants)
94 Km N of Siena (53903 inhabitants)
98 Km SE of Reggio nell'Emilia (171345 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 2.1 2022-05-20
08:26:48		 44.1423 11.5848 9 2023-01-31
19:03:13		 Bollettino Sismico Italiano INGV 105057231
Reviewed
Rev100 		ML 2.1 2022-05-20
08:26:49		 44.1398 11.5827 9 2022-05-20
08:34:22		 Sala Sismica INGV-Roma 104899101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-05-20 08:26:48 ± 0.08
Latitude 44.1423 ± 0.0054
Longitude 11.5848 ± 0.0063
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 105057231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 554
Semi-minor axis of confidence ellipse (meter) 500
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 8
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 38
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.03242
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 105057231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-10-13 15:00:22

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 104899101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-05-20 08:34:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SCHR.EHZ. 2022-05-20T08:28:24.15 3.0 undecidable manual Pg 16.219999 0
IV.ORI.HHZ. 2022-05-20T08:28:16.96 3.0 undecidable manual Pn 4.94 0
CH.MUGIO.HHZ. 2022-05-20T08:28:13.22 3.0 undecidable manual Sg 8.94 0
IV.QLNO.HHZ. 2022-05-20T08:28:07.98 3.0 undecidable manual Sg 8.81 0
IX.RSF3.HHZ.02 2022-05-20T08:28:00.76 3.0 positive manual Pg 6.92 0
GU.ENR.HHZ. 2022-05-20T08:27:46.89 3.0 undecidable manual Pg 9.26 0
IV.MCI.EHZ. 2022-05-20T08:27:35.72 3.0 negative manual Pn -4.03 0
IV.LAV9.HNZ. 2022-05-20T08:27:33.50 3.0 undecidable manual Pn 0.99 0
IV.MTRA.EHZ. 2022-05-20T08:27:24.79 3.0 undecidable manual Pg 1.49 0
IV.CRMI.HHZ. 2022-05-20T08:27:09.45 0.6 undecidable manual S 232 61.7937 50 1.05 33
IV.FRON.EHZ. 2022-05-20T08:27:09.52 0.6 undecidable manual P 127 114.5964 50 1.2 28
IV.CRE.HHZ. 2022-05-20T08:27:09.77 0.3 undecidable manual S 153 65.0904 50 0.5 63
IV.ATPI.EHZ. 2022-05-20T08:27:07.10 0.6 undecidable manual P 139 100.8213 50 0.9 33
IV.PII.HHZ. 2022-05-20T08:27:06.12 0.3 undecidable manual P 242 96.6255 50 0.56 58
IV.CAFI.HHZ. 2022-05-20T08:27:05.79 0.3 undecidable manual P 161 95.238 50 0.45 60
IV.MPPT.EHZ. 2022-05-20T08:27:03.99 1.0 undecidable manual S 243 44.4222 50 0.22 23
IV.ASQU.HHZ. 2022-05-20T08:27:02.99 0.6 undecidable manual S 157 41.7249 50 -0.04 48
IV.OSSC.HHZ. 2022-05-20T08:27:02.27 0.3 undecidable manual P 202 73.7706 50 0.23 66
IV.PARC.HHZ. 2022-05-20T08:27:02.81 0.3 undecidable manual P 136 75.6687 50 0.48 62
IV.BDI.HHZ. 2022-05-20T08:27:02.71 0.3 undecidable manual P 264 79.2651 50 -0.17 66
IV.FNVD.HHZ. 2022-05-20T08:27:01.80 0.6 undecidable manual S 275 36.8298 50 0.05 49
IV.RUFI.EHN. 2022-05-20T08:27:01.07 0.3 undecidable manual S 190 34.3434 50 0.01 74
IV.MOCL.EHZ. 2022-05-20T08:27:01.39 0.6 undecidable manual S 245 35.6421 50 -0.03 49
GU.POPM.HHZ. 2022-05-20T08:27:00.79 0.3 undecidable manual P 261 66.8775 50 -0.17 67
IV.IMOL.HNZ. 2022-05-20T08:27:00.18 0.6 undecidable manual S 27 27.1506 108 1.31 31
IV.SFI.EHZ. 2022-05-20T08:27:00.79 0.6 undecidable manual S 141 33.6441 50 -0.1 48
IV.CRMI.HHZ. 2022-05-20T08:27:00.37 0.1 undecidable manual P 232 61.7937 50 0.19 90
IV.CRE.HHZ. 2022-05-20T08:27:00.48 0.1 undecidable manual P 153 65.0904 50 -0.21 89
IV.BOSL.HHZ. 2022-05-20T08:26:59.77 0.3 undecidable manual S 216 28.8489 107 0.34 70
IV.MTRZ.HHZ. 2022-05-20T08:26:58.61 0.6 undecidable manual S 326 22.755 111 1.17 34
IV.MPPT.EHZ. 2022-05-20T08:26:57.12 0.1 undecidable manual P 243 44.4222 50 -0.39 89
IV.SEI.HHZ. 2022-05-20T08:26:57.22 0.6 undecidable manual S 242 20.4684 113 0.51 45
IV.ASQU.HHZ. 2022-05-20T08:26:56.64 0.1 undecidable manual P 157 41.7249 50 -0.44 89
IV.FNVD.HHZ. 2022-05-20T08:26:55.86 0.1 undecidable manual P 275 36.8298 50 -0.48 89
IV.RUFI.EHN. 2022-05-20T08:26:55.58 0.1 undecidable manual P 190 34.3434 50 -0.37 91
IV.BRIS.HHZ. 2022-05-20T08:26:55.52 0.6 undecidable manual S 58 17.0718 117 -0.12 50
IV.MOCL.EHZ. 2022-05-20T08:26:55.77 0.1 undecidable manual P 245 35.6421 50 -0.38 91
IV.SFI.EHZ. 2022-05-20T08:26:55.27 0.1 undecidable manual P 141 33.6441 50 -0.58 86
IV.LMD.HHZ. 2022-05-20T08:26:54.28 0.6 undecidable manual S 126 12.0768 126 0.11 50
IV.IMOL.HNZ. 2022-05-20T08:26:54.66 0.1 undecidable manual P 27 27.1506 108 -0.02 100
IV.VISG.HHZ. 2022-05-20T08:26:54.12 0.6 undecidable manual S 293 13.0758 124 -0.31 48
IV.BOSL.HHZ. 2022-05-20T08:26:54.94 0.1 positive manual P 216 28.8489 107 -0.07 98
IV.SEI.HHZ. 2022-05-20T08:26:53.38 0.1 positive manual P 242 20.4684 113 -0.06 100
IV.MTRZ.HHZ. 2022-05-20T08:26:53.96 0.1 undecidable manual P 326 22.755 111 0.1 99
IV.BRIS.HHZ. 2022-05-20T08:26:52.48 0.1 positive manual P 58 17.0718 117 -0.34 95
IV.LMD.HHZ. 2022-05-20T08:26:51.78 0.1 undecidable manual P 126 12.0768 126 -0.19 99
IV.VISG.HHZ. 2022-05-20T08:26:51.79 0.1 undecidable manual P 293 13.0758 124 -0.33 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHN. ML:2.1 0.001495 0.68 AML other m 2022-05-20T08:26:54.58
IV.LMD.HHE. ML:2.3 0.002395 0.44 AML other m 2022-05-20T08:26:54.55
IV.VISG.HHE. ML:2.1 0.0015049999999999998 0.86 AML other m 2022-05-20T08:26:54.82
IV.BRIS.HHN. ML:2.6 0.0033450000000000003 0.34 AML other m 2022-05-20T08:26:55.80
IV.BRIS.HHE. ML:2.5 0.0028399999999999996 0.14 AML other m 2022-05-20T08:26:55.80
IV.BRIS.HNE. ML:2.9 0.00724 0.14 AML other m 2022-05-20T08:26:55.81
IV.BRIS.HNN. ML:2.9 0.0071200000000000005 0.7 AML other m 2022-05-20T08:26:55.83
IV.SEI.HHE. ML:2.6 0.002875 0.2 AML other m 2022-05-20T08:26:57.38
IV.LMD.HHN. ML:2.3 0.0022400000000000002 0.56 AML other m 2022-05-20T08:26:57.64
IV.SEI.HHN. ML:2.7 0.00344 1.4 AML other m 2022-05-20T08:26:58.83
IV.MTRZ.HHE. ML:2.5 0.002075 0.26 AML other m 2022-05-20T08:26:59.74
IV.MTRZ.HNE. ML:2.5 0.002 0.26 AML other m 2022-05-20T08:26:59.74
IV.IMOL.EHE. ML:2.4 0.00156 0.16 AML other m 2022-05-20T08:27:00.34
IV.IMOL.EHN. ML:2.3 0.0012050000000000001 0.18 AML other m 2022-05-20T08:27:00.43
IV.IMOL.HNE. ML:2.9 0.00438 0.18 AML other m 2022-05-20T08:27:00.78
IV.IMOL.HNN. ML:2.7 0.002895 1.84 AML other m 2022-05-20T08:27:00.04
IV.MOCL.EHN. ML:2.0 0.00039549999999999996 0.24 AML other m 2022-05-20T08:27:01.71
IV.SFI.HNE. ML:1.9 0.0003755 0.52 AML other m 2022-05-20T08:27:01.66
IV.MOCL.EHE. ML:2.1 0.0005535 0.3 AML other m 2022-05-20T08:27:01.71
IV.FNVD.HHE. ML:2.5 0.0011 0.66 AML other m 2022-05-20T08:27:02.27
IV.FNVD.HHN. ML:2.3 0.0008414999999999999 0.3 AML other m 2022-05-20T08:27:02.71
IV.BOSL.HHN. ML:1.5 0.000154 1.1 AML other m 2022-05-20T08:27:03.10
IV.BOSL.HHE. ML:1.4 0.000132 0.72 AML other m 2022-05-20T08:27:03.77
IV.ASQU.HHE. ML:2.2 0.0005249999999999999 0.32 AML other m 2022-05-20T08:27:04.03
IV.SFI.HNN. ML:2.0 0.0004825 1.1 AML other m 2022-05-20T08:27:05.78
IV.MTRZ.HHN. ML:2.5 0.0022 0.34 AML other m 2022-05-20T08:27:05.39
IV.MTRZ.HNN. ML:2.5 0.0021349999999999997 0.34 AML other m 2022-05-20T08:27:05.39
IV.SFI.EHN. ML:2.0 0.00038149999999999995 0.48 AML other m 2022-05-20T08:27:05.78
IV.ASQU.HHN. ML:2.1 0.00041349999999999997 0.38 AML other m 2022-05-20T08:27:06.78
IV.SFI.EHE. ML:2.0 0.000382 0.88 AML other m 2022-05-20T08:27:07.09
IV.MPPT.EHN. ML:1.8 0.0001805 1.02 AML other m 2022-05-20T08:27:08.45
IV.MPPT.EHE. ML:1.7 0.00015900000000000002 0.36 AML other m 2022-05-20T08:27:08.76
IV.CRE.HHN. ML:2.2 0.00027449999999999995 1.74 AML other m 2022-05-20T08:27:10.97
IV.CRMI.HHE. ML:1.6 0.0000745 0.54 AML other m 2022-05-20T08:27:12.28
IV.CRMI.HHN. ML:1.8 0.00011330000000000002 0.66 AML other m 2022-05-20T08:27:12.61
GU.POPM.HHE. ML:1.7 0.00009025 0.84 AML other m 2022-05-20T08:27:13.18
IV.CRE.HHE. ML:2.0 0.0001735 0.28 AML other m 2022-05-20T08:27:13.62
GU.POPM.HHN. ML:1.9 0.000143 0.32 AML other m 2022-05-20T08:27:14.28
IV.OSSC.HHN. ML:1.8 0.00010645 0.96 AML other m 2022-05-20T08:27:17.56
IV.OSSC.HHE. ML:2.0 0.00016900000000000002 0.56 AML other m 2022-05-20T08:27:17.18
IV.BDI.HHN. ML:1.9 0.0001215 1.58 AML other m 2022-05-20T08:27:17.91
IV.BDI.HHE. ML:1.8 0.00008235000000000001 0.9 AML other m 2022-05-20T08:27:18.60
IV.PII.HHE. ML:1.9 0.0000847 0.26 AML other m 2022-05-20T08:27:19.65
IV.PARC.HHN. ML:1.8 0.00009405 1.54 AML other m 2022-05-20T08:27:19.02
IV.PARC.HHE. ML:1.7 0.00007075 0.86 AML other m 2022-05-20T08:27:21.42
IV.CAFI.HHN. ML:1.7 0.0000555 1.28 AML other m 2022-05-20T08:27:22.16
IV.ATPI.EHE. ML:1.7 0.000043249999999999994 0.38 AML other m 2022-05-20T08:27:24.06
IV.PII.HHN. ML:2.0 0.00010439999999999999 0.74 AML other m 2022-05-20T08:27:24.70
IV.CAFI.HHE. ML:2.0 0.0001175 0.7 AML other m 2022-05-20T08:27:25.01
IV.ATPI.EHN. ML:1.8 0.00006035 0.7 AML other m 2022-05-20T08:27:27.68
IV.FRON.EHE. ML:1.7 0.00004195 1.52 AML other m 2022-05-20T08:27:33.02
IV.FRON.EHN. ML:1.9 0.00006955 1.02 AML other m 2022-05-20T08:27:33.32
IV.ROVR.HHN. ML:2.4 0.00010250000000000001 0.36 AML other m 2022-05-20T08:27:44.39
IV.ROVR.HHE. ML:2.0 0.00004195 1.18 AML other m 2022-05-20T08:27:49.02
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
Waveforms Seismic signals in miniseed + resp format Download