Earthquake with magnitude of Md 2.4 on date 21-04-1985 and time 17:26:53 (Italy) in region 2 km NW Spilamberto (MO)

A magnitude Md 2.4 earthquake occured in region: 2 km NW Spilamberto (MO), on

  • 21-04-1985 15:26:53 (UTC)
  • 21-04-1985 17:26:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.55, 11.02 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Spilamberto MO 2 12621 12621
San Cesario sul Panaro MO 2 6407 19028
Castelnuovo Rangone MO 6 14896 33924
Castelfranco Emilia MO 6 32677 66601
Valsamoggia BO 7 30561 97162
Castelvetro di Modena MO 8 11185 108347
Vignola MO 8 25353 133700
Savignano sul Panaro MO 8 9177 142877
Marano sul Panaro MO 11 5060 147937
Maranello MO 12 17359 165296
Modena MO 13 184973 350269
Formigine MO 14 34323 384592
Anzola dell'Emilia BO 14 12267 396859
Guiglia MO 14 3931 400790
Nonantola MO 15 15839 416629
Sant'Agata Bolognese BO 16 7291 423920
Fiorano Modenese MO 16 17160 441080
San Giovanni in Persiceto BO 17 27982 469062
Zola Predosa BO 17 18770 487832
Monte San Pietro BO 18 10982 498814
Sassuolo MO 18 40853 539667
Bastiglia MO 20 4193 543860
Bomporto MO 20 10157 554017

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km SE of Modena (184973 inhabitants)
27 Km W of Bologna (386663 inhabitants)
28 Km SE of Carpi (70699 inhabitants)
35 Km E of Reggio nell'Emilia (171345 inhabitants)
58 Km SW of Ferrara (133155 inhabitants)
60 Km W of Imola (69797 inhabitants)
61 Km E of Parma (192836 inhabitants)
69 Km N of Pistoia (90315 inhabitants)
75 Km N of Prato (191150 inhabitants)
75 Km W of Faenza (58541 inhabitants)
84 Km SW of Rovigo (51867 inhabitants)
88 Km NE of Lucca (89046 inhabitants)
89 Km N of Firenze (382808 inhabitants)
89 Km N of Scandicci (50609 inhabitants)
89 Km W of Forlì (117913 inhabitants)
90 Km NE of Massa (69479 inhabitants)
90 Km NE of Carrara (63133 inhabitants)
95 Km W of Ravenna (159116 inhabitants)
97 Km NE of Viareggio (62467 inhabitants)
99 Km S of Verona (258765 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 2.4 1985-04-21
15:26:53
44.55 11.02 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 5149
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-21 15:26:53 ± 0.25
Latitude 44.55 ± 0.02
Longitude 11.02 ± 0.04
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 5149

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) 3661.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
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) 0.0051
Epicentral distance of station farthest from the epicenter (degree) 0.014
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 5149
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:09:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CH1.Z. 1985-04-21T15:27:32.00 10.0 undecidable manual SN 143 0.0102 0.96 0.3
--.SAL.Z. 1985-04-21T15:27:31.50 10.0 undecidable manual SN 341 0.01 1.13 0.2
--.PS9.Z. 1985-04-21T15:27:23.50 10.0 undecidable manual SG 202 0.0081 -0.77 0.4
--.CTI.Z. 1985-04-21T15:27:20.50 10.0 undecidable manual PN 16 0.014 -0.45 1.3
--.CH1.Z. 1985-04-21T15:27:15.00 10.0 undecidable manual PN 143 0.0102 -0.15 2
--.SAL.Z. 1985-04-21T15:27:14.50 10.0 undecidable manual PN 341 0.01 -0.27 1.9
--.BD1.Z. 1985-04-21T15:27:14.00 10.0 undecidable manual SG 211 0.0051 0.27 0.8
--.PS9.Z. 1985-04-21T15:27:10.50 10.0 undecidable manual PG 202 0.0081 -0.75 1.1
--.BD1.Z. 1985-04-21T15:27:06.00 10.0 undecidable manual PG 211 0.0051 0.84 0.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download