Earthquake with magnitude of ML 1.6 on date 30-05-2021 and time 05:34:26 (UTC) in region 3 km NE Palazzuolo sul Senio (FI)

A magnitude ML 1.6 earthquake occured in region: 3 km NE Palazzuolo sul Senio (FI), on

  • 30-05-2021 05:34:26 (UTC)
  • 30-05-2021 07:34:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1430, 11.5620 at 11 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
Palazzuolo sul Senio FI 4 1154 1154
Marradi FI 8 3139 4293
Castel del Rio BO 9 1246 5539
Casola Valsenio RA 10 2617 8156
Fontanelice BO 13 1943 10099
Firenzuola FI 15 4726 14825
Borgo Tossignano BO 15 3288 18113
Tredozio FC 16 1212 19325
Casalfiumanese BO 18 3438 22763
Modigliana FC 19 4560 27323
Brisighella RA 19 7639 34962
Riolo Terme RA 20 5720 40682

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km SW of Imola (69797 inhabitants)
30 Km SW of Faenza (58541 inhabitants)
39 Km W of Forlì (117913 inhabitants)
43 Km SE of Bologna (386663 inhabitants)
47 Km NE of Prato (191150 inhabitants)
48 Km NE of Firenze (382808 inhabitants)
52 Km NE of Scandicci (50609 inhabitants)
54 Km W of Cesena (96758 inhabitants)
57 Km E of Pistoia (90315 inhabitants)
59 Km SW of Ravenna (159116 inhabitants)
75 Km SE of Modena (184973 inhabitants)
77 Km S of Ferrara (133155 inhabitants)
79 Km NW of Arezzo (99543 inhabitants)
81 Km W of Rimini (147750 inhabitants)
89 Km SE of Carpi (70699 inhabitants)
91 Km E of Lucca (89046 inhabitants)
93 Km N of Siena (53903 inhabitants)
96 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 1.6 2021-05-30
05:34:26
44.1428 11.5625 11 2021-12-29
11:12:08
Bollettino Sismico Italiano INGV 92063921
Reviewed
Rev100
ML 1.6 2021-05-30
05:34:26
44.1472 11.5652 11 2021-05-30
05:43:52
Sala Sismica INGV-Roma 90620991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-30 05:34:26 ± 0.09
Latitude 44.1428 ± 0.0072
Longitude 11.5625 ± 0.0075
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 92063921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 725
Semi-minor axis of confidence ellipse (meter) 538
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 19
Circular confidence region, given by single value of horizontal uncertainty (meter) 720.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.12231
Epicentral distance of station farthest from the epicenter (degree) 0.69787
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 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 92063921
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-12 13:59:09

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 90620991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-30 05:43:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2021-05-30T05:34:50.31 0.6 undecidable manual S 196 77.4669 50 0.4 42
IV.CSNT.HHZ. 2021-05-30T05:34:40.98 0.1 undecidable manual P 196 77.4669 50 0.86 70
IV.ASQU.HHE. 2021-05-30T05:34:40.87 0.3 undecidable manual S 155 42.4242 50 0.29 69
IV.FNVD.HHZ. 2021-05-30T05:34:38.69 0.6 undecidable manual S 275 35.1426 50 0.07 48
IV.RUFI.EHZ. 2021-05-30T05:34:38.21 0.6 undecidable manual S 187 34.0437 50 -0.13 47
IV.MOCL.EHZ. 2021-05-30T05:34:38.27 0.3 undecidable manual S 243 34.0437 50 -0.07 71
IV.SFI.EHZ. 2021-05-30T05:34:38.73 0.6 undecidable manual S 139 34.8429 50 0.19 48
IV.MTRZ.HNZ. 2021-05-30T05:34:36.07 0.6 undecidable manual S 330 21.7671 50 1 34
IV.ASQU.HHE. 2021-05-30T05:34:34.57 0.3 undecidable manual P 155 42.4242 50 -0.16 69
IV.BRIS.HHZ. 2021-05-30T05:34:34.48 0.1 undecidable manual S 61 18.5703 50 0.27 91
IV.SEI.HHZ. 2021-05-30T05:34:34.54 0.6 undecidable manual S 239 18.9699 50 0.22 44
IV.MOCL.EHZ. 2021-05-30T05:34:33.33 0.3 undecidable manual P 243 34.0437 50 -0.11 72
IV.SFI.EHZ. 2021-05-30T05:34:33.23 0.3 undecidable manual P 139 34.8429 50 -0.33 68
IV.FNVD.HHZ. 2021-05-30T05:34:33.29 0.1 positive manual P 275 35.1426 50 -0.31 91
IV.RUFI.EHZ. 2021-05-30T05:34:33.16 0.1 undecidable manual P 187 34.0437 50 -0.28 92
IV.LMD.HHZ. 2021-05-30T05:34:32.92 0.6 undecidable manual S 122 13.5753 129 0.12 46
IV.MTRZ.HNZ. 2021-05-30T05:34:31.53 0.3 undecidable manual P 330 21.7671 50 -0.02 73
IV.SEI.HHZ. 2021-05-30T05:34:30.99 0.1 undecidable manual P 239 18.9699 50 -0.13 98
IV.LMD.HHZ. 2021-05-30T05:34:30.02 0.1 positive manual P 122 13.5753 129 -0.22 100
IV.BRIS.HHZ. 2021-05-30T05:34:30.80 0.1 positive manual P 61 18.5703 50 -0.26 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHE. ML:1.5 0.0002895 0.14 AML other m 2021-05-30T05:34:33.08
IV.LMD.HHN. ML:1.5 0.0002985 0.12 AML other m 2021-05-30T05:34:33.09
IV.BRIS.HHE. ML:2.0 0.0007075 0.12 AML other m 2021-05-30T05:34:34.68
IV.BRIS.HHN. ML:2.1 0.0009045 0.24 AML other m 2021-05-30T05:34:34.68
IV.SEI.HHN. ML:1.6 0.0003328324 0.2208 AML other m 2021-05-30T05:34:34.72
IV.SEI.HHE. ML:1.7 0.00037743905 0.16 AML other m 2021-05-30T05:34:34.98
IV.SFI.EHN. ML:0.9 0.000032291985 0.4416 AML other m 2021-05-30T05:34:39.10
IV.SFI.EHE. ML:0.9 0.000030845155 0.2208 AML other m 2021-05-30T05:34:39.04
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download