Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 27-03-2022 and time 03:16:55 (Italy) in region 4 km N Palazzuolo sul Senio (FI)

A magnitude ML 0.4 earthquake occured in region: 4 km N Palazzuolo sul Senio (FI), on

  • 27-03-2022 01:16:55 (UTC)
  • 27-03-2022 03:16:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.1500, 11.5400 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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
Castel del Rio BO 8 1246 2400
Marradi FI 10 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
Tredozio FC 18 1212 22763
Monghidoro BO 19 3749 26512

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km SW of Imola (69797 inhabitants)
31 Km W of Faenza (58541 inhabitants)
41 Km W of Forlì (117913 inhabitants)
41 Km SE of Bologna (386663 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)
56 Km W of Cesena (96758 inhabitants)
60 Km W of Ravenna (159116 inhabitants)
74 Km SE of Modena (184973 inhabitants)
77 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)
90 Km E of Lucca (89046 inhabitants)
94 Km N of Siena (53903 inhabitants)
94 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 0.4 2022-03-27
01:16:55		 44.1502 11.5395 9 2022-07-08
12:33:42		 Bollettino Sismico Italiano INGV 103075981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-03-27 01:16:55 ± 0.16
Latitude 44.1502 ± 0.0090
Longitude 11.5395 ± 0.0100
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 103075981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 825
Semi-minor axis of confidence ellipse (meter) 778
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) 830.0
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 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.08454
Epicentral distance of station farthest from the epicenter (degree) 0.29947
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 103075981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-05-23 13:01:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FNVD.HHZ. 2022-03-27T01:17:07.13 0.6 undecidable manual S 274 33.2445 50 -0.17 49
IV.BOSL.HHZ. 2022-03-27T01:17:06.24 0.3 undecidable manual S 208 27.6501 108 0.71 66
IV.MTRZ.HNZ. 2022-03-27T01:17:04.38 0.3 undecidable manual S 333 20.1687 113 1.27 48
IV.BRIS.HHZ. 2022-03-27T01:17:03.13 0.3 undecidable manual S 65 19.869 114 0.13 74
IV.SEI.HHZ. 2022-03-27T01:17:02.75 0.3 undecidable manual S 234 17.871 116 0.37 74
IV.FNVD.HHZ. 2022-03-27T01:17:01.85 0.3 undecidable manual P 274 33.2445 50 -0.45 71
IV.LMD.HHZ. 2022-03-27T01:17:01.79 0.3 undecidable manual S 121 15.5733 119 0.11 77
IV.BOSL.HHZ. 2022-03-27T01:17:01.48 0.3 undecidable manual P 208 27.6501 108 0.2 73
IV.SEI.HHZ. 2022-03-27T01:16:59.41 0.1 undecidable manual P 234 17.871 116 -0.05 100
IV.VISG.HHZ. 2022-03-27T01:16:59.42 0.3 undecidable manual S 297 9.3795 133 -0.5 66
IV.BRIS.HHZ. 2022-03-27T01:16:59.59 0.1 undecidable manual P 65 19.869 114 -0.22 99
IV.MTRZ.HNZ. 2022-03-27T01:16:59.96 0.3 undecidable manual P 333 20.1687 113 0.08 75
IV.LMD.HHZ. 2022-03-27T01:16:58.91 0.3 undecidable manual P 121 15.5733 119 -0.14 75
IV.VISG.HHZ. 2022-03-27T01:16:57.65 0.1 undecidable manual P 297 9.3795 133 -0.39 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHN. ML:0.5 0.0000465 0.2 AML other m 2022-03-27T01:16:59.54
IV.VISG.HHE. ML:0.3 0.0000287 1.08 AML other m 2022-03-27T01:17:00.89
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