Earthquake with magnitude of Md 2.3 on date 04-06-1986 and time 22:59:42 (Italy) in region 4 km NE Vernio (PO)

A magnitude Md 2.3 earthquake occured in region: 4 km NE Vernio (PO), on

  • 04-06-1986 20:59:42 (UTC)
  • 04-06-1986 22:59:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.08, 11.19 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
Vernio PO 4 6060 6060
Castiglione dei Pepoli BO 8 5648 11708
Cantagallo PO 9 3105 14813
Barberino di Mugello FI 9 10836 25649
Vaiano PO 13 9895 35544
Camugnano BO 14 1885 37429
Firenzuola FI 16 4726 42155
Sambuca Pistoiese PT 16 1626 43781
Castel di Casio BO 16 3448 47229
San Benedetto Val di Sambro BO 16 4315 51544
Scarperia e San Piero FI 16 12217 63761
Monghidoro BO 19 3749 67510
Alto Reno Terme BO 20 6960 74470
Vaglia FI 20 5073 79543

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Prato (191150 inhabitants)
27 Km NE of Pistoia (90315 inhabitants)
34 Km N of Firenze (382808 inhabitants)
35 Km N of Scandicci (50609 inhabitants)
48 Km S of Bologna (386663 inhabitants)
52 Km SW of Imola (69797 inhabitants)
60 Km W of Faenza (58541 inhabitants)
61 Km E of Lucca (89046 inhabitants)
67 Km SE of Modena (184973 inhabitants)
70 Km W of Forlì (117913 inhabitants)
75 Km NE of Pisa (89158 inhabitants)
79 Km E of Viareggio (62467 inhabitants)
83 Km SE of Reggio nell'Emilia (171345 inhabitants)
83 Km SE of Carpi (70699 inhabitants)
84 Km W of Cesena (96758 inhabitants)
84 Km E of Massa (69479 inhabitants)
85 Km N of Siena (53903 inhabitants)
87 Km NW of Arezzo (99543 inhabitants)
88 Km E of Carrara (63133 inhabitants)
89 Km W of Ravenna (159116 inhabitants)
91 Km SW of Ferrara (133155 inhabitants)
92 Km NE of Livorno (159219 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 2.3 1986-06-04
20:59:42
44.08 11.19 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 28689
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-06-04 20:59:42 ± 0.9
Latitude 44.08 ± 0.07
Longitude 11.19 ± 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 28689

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) 8112.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 220
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00267
Epicentral distance of station farthest from the epicenter (degree) 0.00631
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:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 28689
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:30:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.CRE.Z. 1986-06-04T21:00:09.00 10.0 undecidable manual SG 129 0.0063 1.76 0.2
--.PS9.Z. 1986-06-04T21:00:04.00 10.0 undecidable manual SG 234 0.0053 0.34 0.7
--.BDI.Z. 1986-06-04T20:59:59.90 10.0 undecidable manual SG 268 0.0038 1.67 0.2
--.CRE.Z. 1986-06-04T20:59:56.50 10.0 undecidable manual PG 129 0.0063 -0.3 1.6
--.PS9.Z. 1986-06-04T20:59:55.00 10.0 undecidable manual PG 234 0.0053 0.27 1.8
--.BDI.Z. 1986-06-04T20:59:51.00 10.0 undecidable manual PG 268 0.0038 -0.59 1.6
--.FIR.Z. 1986-06-04T20:59:48.00 10.0 undecidable manual PG 171 0.0027 -1.27 0.8
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
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