Earthquake with magnitude of Md 3.8 on date 30-04-2002 and time 23:24:50 (Italy) in region 2 km NW Palazzuolo sul Senio (FI)

A magnitude Md 3.8 earthquake occured in region: 2 km NW Palazzuolo sul Senio (FI), on

  • 30-04-2002 21:24:50 (UTC)
  • 30-04-2002 23:24:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.13, 11.54 at 5 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 2 1154 1154
Marradi FI 9 3139 4293
Castel del Rio BO 9 1246 5539
Casola Valsenio RA 13 2617 8156
Firenzuola FI 13 4726 12882
Fontanelice BO 14 1943 14825
Borgo Tossignano BO 17 3288 18113
Tredozio FC 18 1212 19325
Casalfiumanese BO 20 3438 22763

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)
56 Km W of Cesena (96758 inhabitants)
62 Km SW of Ravenna (159116 inhabitants)
75 Km SE of Modena (184973 inhabitants)
79 Km S of Ferrara (133155 inhabitants)
79 Km NW of Arezzo (99543 inhabitants)
83 Km W of Rimini (147750 inhabitants)
89 Km E of Lucca (89046 inhabitants)
89 Km SE of Carpi (70699 inhabitants)
92 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
Rev 1000 Md 3.8
ML-MEDNET 3.4
2002-04-30
21:24:50
44.13 11.54 5 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 440199
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2002-04-30 21:24:50 ± 0.224
Latitude 44.13 ± 0.01
Longitude 11.54 ± 0.02
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 440199

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 1849.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 38
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.0013
Epicentral distance of station farthest from the epicenter (degree) 0.02785
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 31
Magnitudes information

Md:3.8

Field Value
Value 3.8
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 440199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 23:56:05

ML:3.4

Field Value
Value 3.4
Uncertainty
Num. used stations
Type of magnitude ML
Reference to an origin 440199
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 10:38:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.RVI2.Z. 2002-04-30T21:25:41.24 10.0 undecidable manual PN 143 0.0278 1.46 0.1
--.SDI.Z. 2002-04-30T21:25:38.35 10.0 undecidable manual PN 144 0.0264 0.8 0.5
--.FVI.Z. 2002-04-30T21:25:33.20 10.0 undecidable manual PN 18 0.0235 -0.04 0.9
--.PTQR.Z. 2002-04-30T21:25:33.52 10.0 undecidable manual PN 146 0.0226 1.84 0
--.BRMO.Z. 2002-04-30T21:25:33.24 10.0 undecidable manual PN 341 0.0223 1.97 0
--.PTCC.Z. 2002-04-30T21:25:32.28 10.0 undecidable manual PN 28 0.0234 -0.72 0.5
--.GMNA.Z. 2002-04-30T21:25:30.80 10.0 undecidable manual PN 27 0.0218 -0.43 0.8
--.FIN.Z. 2002-04-30T21:25:29.33 10.0 undecidable manual PN 272 0.0215 -0.64 0.6
--.TRI.Z. 2002-04-30T21:25:26.75 10.0 undecidable manual PN 44 0.02 -1.07 0.3
--.MNS.Z. 2002-04-30T21:25:23.95 10.0 undecidable manual PN 153 0.0174 0.17 1.1
--.VVI.Z. 2002-04-30T21:25:23.77 10.0 undecidable manual PN 18 0.0176 -0.26 1
--.CTI.Z. 2002-04-30T21:25:23.44 10.0 undecidable manual PN 2 0.0172 -0.09 1.1
--.NRCA.Z. 2002-04-30T21:25:21.14 10.0 undecidable manual PN 137 0.0155 0.17 1.1
--.SAL.Z. 2002-04-30T21:25:20.80 10.0 undecidable manual PN 334 0.0147 1.09 0.4
--.SNTG.Z. 2002-04-30T21:25:15.33 10.0 undecidable manual PN 130 0.0121 -0.3 1.2
--.ASS.Z. 2002-04-30T21:25:14.96 10.0 undecidable manual PN 142 0.0121 -0.66 0.9
--.CRE.Z. 2002-04-30T21:25:12.34 10.0 undecidable manual SG 149 0.0053 0.06 0.5
--.GRFL.Z. 2002-04-30T21:25:11.36 10.0 undecidable manual PG 202 0.0096 -0.41 1.1
--.FSSB.Z. 2002-04-30T21:25:09.51 10.0 undecidable manual PG 115 0.0089 -0.99 0.5
--.ERBM.Z. 2002-04-30T21:25:07.44 10.0 undecidable manual PG 289 0.0076 -0.41 1.1
--.PII.Z. 2002-04-30T21:25:07.22 10.0 undecidable manual PG 240 0.0074 -0.32 1.2
--.CSNT.Z. 2002-04-30T21:25:05.24 10.0 undecidable manual PG 194 0.0061 0.55 1
--.GSCL.Z. 2002-04-30T21:25:04.56 10.0 undecidable manual PG 288 0.0064 -0.7 0.8
--.RSM.Z. 2002-04-30T21:25:04.81 10.0 undecidable manual PG 106 0.0062 0.01 1.3
--.BDI.Z. 2002-04-30T21:25:03.28 10.0 undecidable manual PG 264 0.0061 -1.31 0.3
--.CRE.Z. 2002-04-30T21:25:01.99 10.0 undecidable manual PG 149 0.0053 -1.04 0.5
--.ZCCA.Z. 2002-04-30T21:25:00.83 10.0 positive manual PG 298 0.004 0.34 2.4
--.PGD.Z. 2002-04-30T21:25:00.71 10.0 undecidable manual SG 152 0.0026 -0.96 0.2
--.BRSN.Z. 2002-04-30T21:25:00.18 10.0 positive manual PG 68 0.0037 0.52 2.1
--.SFI.Z. 2002-04-30T21:24:57.29 10.0 negative manual PG 135 0.0028 -0.28 2.4
--.PGD.Z. 2002-04-30T21:24:56.88 10.0 negative manual PG 152 0.0026 -0.02 2.6
--.VMG.Z. 2002-04-30T21:24:54.67 10.0 positive manual PG 177 0.0015 0.36 2.3
--.SEI.Z. 2002-04-30T21:24:54.23 10.0 positive manual PG 238 0.0013 0.37 2.3
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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