Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 16-08-2022 and time 23:24:24 (UTC) in region 5 km NW Palazzuolo sul Senio (FI)

A magnitude ML 0.9 earthquake occured in region: 5 km NW Palazzuolo sul Senio (FI), on

  • 16-08-2022 23:24:24 (UTC)
  • 17-08-2022 01:24:24 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1530, 11.5300 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 5 1154 1154
Castel del Rio BO 7 1246 2400
Marradi FI 11 3139 5539
Casola Valsenio RA 11 2617 8156
Fontanelice BO 12 1943 10099
Firenzuola FI 13 4726 14825
Borgo Tossignano BO 15 3288 18113
Casalfiumanese BO 18 3438 21551
Monghidoro BO 19 3749 25300
Tredozio FC 19 1212 26512

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SW of Imola (69797 inhabitants)
32 Km W of Faenza (58541 inhabitants)
41 Km SE of Bologna (386663 inhabitants)
42 Km W of Forlì (117913 inhabitants)
46 Km NE of Prato (191150 inhabitants)
48 Km NE of Firenze (382808 inhabitants)
52 Km NE of Scandicci (50609 inhabitants)
55 Km E of Pistoia (90315 inhabitants)
57 Km W of Cesena (96758 inhabitants)
61 Km W of Ravenna (159116 inhabitants)
73 Km SE of Modena (184973 inhabitants)
76 Km S of Ferrara (133155 inhabitants)
81 Km NW of Arezzo (99543 inhabitants)
83 Km W of Rimini (147750 inhabitants)
87 Km SE of Carpi (70699 inhabitants)
89 Km E of Lucca (89046 inhabitants)
94 Km SE of Reggio nell'Emilia (171345 inhabitants)
94 Km N of Siena (53903 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 0.9 2022-08-16
23:24:24		 44.1533 11.5295 9 2023-01-31
19:03:50		 Bollettino Sismico Italiano INGV 110525271
Reviewed
Rev100 		ML 0.9 2022-08-16
23:24:24		 44.1582 11.5308 7 2022-08-16
23:29:51		 Sala Sismica INGV-Roma 108629341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-08-16 23:24:24 ± 0.06
Latitude 44.1533 ± 0.0036
Longitude 11.5295 ± 0.0038
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 110525271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 331
Semi-minor axis of confidence ellipse (meter) 320
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 4
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
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) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.07734
Epicentral distance of station farthest from the epicenter (degree) 0.33725
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:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 108629341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-08-16 23:29:51

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 110525271
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-10-05 14:15:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.HNN. 2022-08-16T23:24:37.56 0.3 undecidable manual S 137 37.4292 50 0.09 72
IV.RUFI.EHE. 2022-08-16T23:24:37.24 0.3 undecidable manual S 183 35.0427 50 0.42 67
IV.FNVD.HHZ. 2022-08-16T23:24:36.42 0.6 undecidable manual S 273 32.4453 50 0.3 46
IV.MOCL.EHZ. 2022-08-16T23:24:35.95 0.3 undecidable manual S 239 32.3454 50 -0.15 72
IV.BOSL.HHZ. 2022-08-16T23:24:34.73 0.3 undecidable manual S 207 27.5502 108 0.07 73
IV.MTRZ.HNZ. 2022-08-16T23:24:32.39 0.3 undecidable manual S 335 19.5693 115 0.33 70
IV.BRIS.HHZ. 2022-08-16T23:24:32.49 0.3 undecidable manual S 67 20.4684 114 0.15 73
IV.RUFI.EHE. 2022-08-16T23:24:31.33 0.3 undecidable manual P 183 35.0427 50 -0.32 69
IV.LMD.HHZ. 2022-08-16T23:24:31.17 0.6 undecidable manual S 121 16.4724 119 0.07 50
IV.SFI.HNN. 2022-08-16T23:24:31.76 0.3 undecidable manual P 137 37.4292 50 -0.26 69
IV.MOCL.EHZ. 2022-08-16T23:24:31.20 0.3 undecidable manual P 239 32.3454 50 -0.03 73
IV.SEI.HHZ. 2022-08-16T23:24:31.71 0.3 undecidable manual S 231 17.4714 117 0.29 71
IV.FNVD.HHZ. 2022-08-16T23:24:31.04 0.3 undecidable manual P 273 32.4453 50 -0.21 71
IV.BOSL.HHZ. 2022-08-16T23:24:30.47 0.3 undecidable manual P 207 27.5502 108 0.07 73
IV.BRIS.HHZ. 2022-08-16T23:24:29.06 0.3 undecidable manual P 67 20.4684 114 0 75
IV.MTRZ.HNZ. 2022-08-16T23:24:29.00 0.3 undecidable manual P 335 19.5693 115 0.1 74
IV.SEI.HHZ. 2022-08-16T23:24:28.33 0.6 undecidable manual P 231 17.4714 117 -0.2 48
IV.VISG.HHZ. 2022-08-16T23:24:28.60 0.3 undecidable manual S 298 8.5803 137 -0.3 72
IV.LMD.HHZ. 2022-08-16T23:24:28.17 0.3 undecidable manual P 121 16.4724 119 -0.17 73
IV.VISG.HHZ. 2022-08-16T23:24:26.96 0.1 negative manual P 298 8.5803 137 -0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:0.8 0.00009470000000000001 0.06 AML other m 2022-08-16T23:24:28.67
IV.VISG.HHN. ML:0.7 0.00007685 0.54 AML other m 2022-08-16T23:24:29.77
IV.LMD.HHE. ML:0.8 0.000056099999999999995 0.12 AML other m 2022-08-16T23:24:31.44
IV.LMD.HHN. ML:1.0 0.00009490000000000002 0.18 AML other m 2022-08-16T23:24:31.45
IV.SEI.HHE. ML:1.1 0.000112 0.22 AML other m 2022-08-16T23:24:32.32
IV.SEI.HHN. ML:1.2 0.000131 0.24 AML other m 2022-08-16T23:24:32.38
IV.BRIS.HHE. ML:0.9 0.00005545 0.32 AML other m 2022-08-16T23:24:32.92
IV.BRIS.HHN. ML:0.9 0.000053500000000000006 0.32 AML other m 2022-08-16T23:24:32.94
IV.MOCL.EHN. ML:1.0 0.0000409 0.2 AML other m 2022-08-16T23:24:36.51
IV.MOCL.EHE. ML:1.0 0.000047350000000000006 0.7 AML other m 2022-08-16T23:24:36.50
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