Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 24-05-2020 and time 04:53:52 (Italy) in region 3 km NW Palazzuolo sul Senio (FI)

A magnitude ML 1.5 earthquake occured in region: 3 km NW Palazzuolo sul Senio (FI), on

  • 24-05-2020 02:53:52 (UTC)
  • 24-05-2020 04:53:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1360, 11.5280 at 10 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 3 1154 1154
Castel del Rio BO 9 1246 2400
Marradi FI 10 3139 5539
Firenzuola FI 12 4726 10265
Casola Valsenio RA 13 2617 12882
Fontanelice BO 14 1943 14825
Borgo Tossignano BO 17 3288 18113
Tredozio FC 18 1212 19325
Monghidoro BO 19 3749 23074
Casalfiumanese BO 20 3438 26512

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SW of Imola (69797 inhabitants)
33 Km SW of Faenza (58541 inhabitants)
42 Km W of Forlì (117913 inhabitants)
43 Km SE of Bologna (386663 inhabitants)
45 Km NE of Prato (191150 inhabitants)
46 Km NE of Firenze (382808 inhabitants)
50 Km NE of Scandicci (50609 inhabitants)
54 Km E of Pistoia (90315 inhabitants)
57 Km W of Cesena (96758 inhabitants)
62 Km SW of Ravenna (159116 inhabitants)
74 Km SE of Modena (184973 inhabitants)
78 Km S of Ferrara (133155 inhabitants)
80 Km NW of Arezzo (99543 inhabitants)
83 Km W of Rimini (147750 inhabitants)
88 Km E of Lucca (89046 inhabitants)
88 Km SE of Carpi (70699 inhabitants)
92 Km N of Siena (53903 inhabitants)
95 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 1.5 2020-05-24
02:53:52		 44.1355 11.5277 10 2020-11-19
12:37:04		 Bollettino Sismico Italiano INGV 83778151
Reviewed
Rev100 		ML 1.5 2020-05-24
02:53:52		 44.1322 11.5182 10 2020-05-24
02:58:02		 Sala Sismica INGV-Roma 79496771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-24 02:53:52 ± 0.06
Latitude 44.1355 ± 0.0036
Longitude 11.5277 ± 0.0050
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83778151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 386
Semi-minor axis of confidence ellipse (meter) 364
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 51
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.38761
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 83778151
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-15 15:49:39

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 79496771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-24 02:58:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHZ. 2020-05-24T02:54:04.90 0.6 undecidable manual S 135 36.1416 50 0.31 46
IV.FNVD.HHZ. 2020-05-24T02:54:03.90 0.1 undecidable manual S 276 32.4453 50 0.29 92
IV.RUFI.EHZ. 2020-05-24T02:54:03.50 0.1 undecidable manual S 183 33.0447 50 -0.27 92
IV.RINC.HHN. 2020-05-24T02:54:02.60 0.1 undecidable manual S 167 28.3494 50 0.08 97
IV.MTRZ.HHZ. 2020-05-24T02:54:00.50 0.3 undecidable manual S 337 21.2676 115 0.07 74
IV.ASQU.HHZ. 2020-05-24T02:54:00.35 0.3 undecidable manual P 151 43.0236 50 -0.09 71
IV.BRIS.HHZ. 2020-05-24T02:54:00.50 0.6 undecidable manual S 62 21.4674 115 0.04 49
IV.RONT.HHZ. 2020-05-24T02:53:59.50 0.1 undecidable manual S 206 17.4714 120 0.26 95
IV.MPPT.EHZ. 2020-05-24T02:53:59.86 3.0 undecidable manual P 0
IV.SEI.HHZ. 2020-05-24T02:53:59.00 0.1 undecidable manual S 236 16.1727 122 0.13 98
IV.SFI.EHZ. 2020-05-24T02:53:59.48 0.6 undecidable manual P 135 36.1416 50 0.1 48
IV.RUFI.EHZ. 2020-05-24T02:53:58.63 0.1 undecidable manual P 183 33.0447 50 -0.28 92
IV.RINC.HHN. 2020-05-24T02:53:58.04 0.1 undecidable manual P 167 28.3494 50 -0.14 96
IV.IMOL.EHZ. 2020-05-24T02:53:58.85 1.0 undecidable manual P 34 30.1476 50 0.39 23
IV.FNVD.HHZ. 2020-05-24T02:53:58.61 0.1 undecidable manual P 276 32.4453 50 -0.2 94
IV.BRIS.HHZ. 2020-05-24T02:53:57.00 0.1 positive manual P 62 21.4674 115 0 100
IV.MTRZ.HHZ. 2020-05-24T02:53:57.35 0.1 undecidable manual P 337 21.2676 115 0.37 92
IV.SEI.HHZ. 2020-05-24T02:53:56.05 0.1 positive manual P 236 16.1727 122 -0.03 100
IV.RONT.HHZ. 2020-05-24T02:53:56.40 0.1 positive manual P 206 17.4714 120 0.11 98
IV.VISG.HHZ. 2020-05-24T02:53:56.62 0.1 undecidable manual S 309 9.4794 136 -0.43 93
IV.VISG.HHZ. 2020-05-24T02:53:54.84 0.1 undecidable manual P 309 9.4794 136 -0.19 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHN. ML:1.4 0.00033299999999999996 0.72 AML other m 2020-05-24T02:53:57.10
IV.VISG.HHE. ML:1.4 0.00029499999999999996 1.36 AML other m 2020-05-24T02:53:57.82
IV.SEI.HHN. ML:1.7 0.000444 0.44 AML other m 2020-05-24T02:53:59.37
IV.SEI.HHE. ML:1.4 0.00023150000000000002 0.92 AML other m 2020-05-24T02:53:59.36
IV.RONT.HHN. ML:1.7 0.00042249999999999997 0.14 AML other m 2020-05-24T02:54:00.08
IV.RONT.HHE. ML:1.7 0.00046449999999999996 0.3 AML other m 2020-05-24T02:54:00.14
IV.BRIS.HHE. ML:1.2 0.00010960000000000001 0.38 AML other m 2020-05-24T02:54:01.20
IV.BRIS.HHN. ML:1.2 0.00009769999999999999 0.38 AML other m 2020-05-24T02:54:01.28
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