Earthquake with magnitude of Md 2.2 on date 21-04-1985 and time 17:27:23 (Italy) in region E Vignola (MO)

A magnitude Md 2.2 earthquake occured in region: E Vignola (MO), on

  • 21-04-1985 15:27:23 (UTC)
  • 21-04-1985 17:27:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.48, 11.02 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Vignola MO 0 25353 25353
Savignano sul Panaro MO 2 9177 34530
Marano sul Panaro MO 5 5060 39590
Spilamberto MO 6 12621 52211
Valsamoggia BO 6 30561 82772
Castelvetro di Modena MO 6 11185 93957
Guiglia MO 8 3931 97888
San Cesario sul Panaro MO 9 6407 104295
Castelnuovo Rangone MO 10 14896 119191
Maranello MO 13 17359 136550
Castelfranco Emilia MO 13 32677 169227
Monte San Pietro BO 15 10982 180209
Zocca MO 15 4719 184928
Anzola dell'Emilia BO 16 12267 197195
Zola Predosa BO 16 18770 215965
Fiorano Modenese MO 17 17160 233125
Formigine MO 17 34323 267448
Serramazzoni MO 19 8282 275730
Modena MO 20 184973 460703
Sassuolo MO 20 40853 501556

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km SE of Modena (184973 inhabitants)
26 Km W of Bologna (386663 inhabitants)
35 Km SE of Carpi (70699 inhabitants)
39 Km SE of Reggio nell'Emilia (171345 inhabitants)
57 Km W of Imola (69797 inhabitants)
61 Km N of Pistoia (90315 inhabitants)
62 Km SW of Ferrara (133155 inhabitants)
65 Km SE of Parma (192836 inhabitants)
67 Km N of Prato (191150 inhabitants)
72 Km W of Faenza (58541 inhabitants)
82 Km N of Firenze (382808 inhabitants)
82 Km N of Scandicci (50609 inhabitants)
82 Km NE of Lucca (89046 inhabitants)
85 Km NE of Massa (69479 inhabitants)
86 Km NE of Carrara (63133 inhabitants)
87 Km W of Forlì (117913 inhabitants)
90 Km SW of Rovigo (51867 inhabitants)
92 Km NE of Viareggio (62467 inhabitants)
94 Km W of Ravenna (159116 inhabitants)
98 Km NE of Pisa (89158 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 2.2 1985-04-21
15:27:23
44.48 11.02 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 5159
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1985-04-21 15:27:23 ± 1.057
Latitude 44.48 ± 0.02
Longitude 11.02 ± 0.05
Depth (km) 9 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 5159

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) 4587.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 159
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
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) 0.00461
Epicentral distance of station farthest from the epicenter (degree) 0.01457
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 5159
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:09:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CTI.Z. 1985-04-21T15:28:13.00 10.0 undecidable manual SN 15 0.0146 -0.32 0.6
--.CH1.Z. 1985-04-21T15:28:01.00 10.0 undecidable manual SN 141 0.0097 0.57 0.6
--.CTI.Z. 1985-04-21T15:27:52.50 10.0 undecidable manual PN 15 0.0146 0.03 1.7
--.PS9.Z. 1985-04-21T15:27:51.50 10.0 undecidable manual SG 204 0.0075 -1.42 0.1
--.CH1.Z. 1985-04-21T15:27:45.00 10.0 undecidable manual PN 141 0.0097 -0.03 2.2
--.BD1.Z. 1985-04-21T15:27:43.50 10.0 undecidable manual SG 215 0.0046 0.94 0.3
--.PS9.Z. 1985-04-21T15:27:40.00 10.0 undecidable manual PG 204 0.0075 -0.69 1.3
--.BD1.Z. 1985-04-21T15:27:35.50 10.0 undecidable manual PG 215 0.0046 0.79 1.1
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