Earthquake with magnitude of Md 3.0 on date 30-10-1986 and time 00:22:38 (Italy) in region 3 km W Piedimonte Etneo (CT)

A magnitude Md 3.0 earthquake occured in region: 3 km W Piedimonte Etneo (CT), on

  • 29-10-1986 23:22:38 (UTC)
  • 30-10-1986 00:22:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.81, 15.14 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
Piedimonte Etneo CT 3 3963 3963
Linguaglossa CT 3 5403 9366
Fiumefreddo di Sicilia CT 6 9623 18989
Sant'Alfio CT 7 1582 20571
Mascali CT 7 14282 34853
Calatabiano CT 8 5308 40161
Castiglione di Sicilia CT 8 3215 43376
Gaggi ME 9 3184 46560
Giarre CT 10 27659 74219
Motta Camastra ME 10 845 75064
Milo CT 10 1087 76151
Riposto CT 10 14838 90989
Francavilla di Sicilia ME 10 3945 94934
Graniti ME 12 1492 96426
Giardini-Naxos ME 12 9415 105841
Castelmola ME 13 1088 106929
Moio Alcantara ME 13 717 107646
Taormina ME 13 10960 118606
Zafferana Etnea CT 13 9517 128123
Santa Venerina CT 14 8592 136715
Malvagna ME 14 733 137448
Mongiuffi Melia ME 16 600 138048
Letojanni ME 16 2861 140909
Gallodoro ME 17 367 141276
Roccafiorita ME 17 197 141473
Roccella Valdemone ME 18 666 142139
Limina ME 18 836 142975
Randazzo CT 19 10900 153875
Fondachelli-Fantina ME 20 1019 154894
Santa Domenica Vittoria ME 20 980 155874

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km N of Acireale (52622 inhabitants)
35 Km N of Catania (314555 inhabitants)
55 Km SW of Reggio di Calabria (183035 inhabitants)
56 Km SW of Messina (238439 inhabitants)
84 Km N of Siracusa (122291 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 3.0 1986-10-29
23:22:38
37.81 15.15 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 36479
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-10-29 23:22:38 ± 0.298
Latitude 37.81 ± 0.03
Longitude 15.15 ± 0.02
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 36479

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) 3480.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.0038
Epicentral distance of station farthest from the epicenter (degree) 0.00809
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:3

Field Value
Value 3
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 36479
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:36:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.GIB.Z. 1986-10-29T23:23:11.00 10.0 undecidable manual SG 281 0.0081 0.64 0.4
--.SO9.Z. 1986-10-29T23:23:07.00 10.0 undecidable manual SG 69 0.0068 1.02 0.1
--.GIB.Z. 1986-10-29T23:22:56.50 10.0 undecidable manual PG 281 0.0081 -0.45 1
--.SO9.Z. 1986-10-29T23:22:54.00 10.0 positive manual PG 69 0.0068 -0.41 2.4
--.ML9.Z. 1986-10-29T23:22:54.00 10.0 undecidable manual PG? 193 0.0065 0.4 0.5
--.AT9.Z. 1986-10-29T23:22:48.00 10.0 undecidable manual PG 35 0.0038 -0.18 1.6
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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