Earthquake with magnitude of Md 2.0 on date 21-05-1986 and time 06:55:01 (Italy) in region 5 km N Aisone (CN)

A magnitude Md 2.0 earthquake occured in region: 5 km N Aisone (CN), on

  • 21-05-1986 04:55:01 (UTC)
  • 21-05-1986 06:55:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.36, 7.22 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
Aisone CN 5 248 248
Castelmagno CN 6 66 314
Vinadio CN 6 644 958
Demonte CN 8 2003 2961
Pradleves CN 9 250 3211
Monterosso Grana CN 11 505 3716
Sambuco CN 11 92 3808
Valloriate CN 13 109 3917
Moiola CN 14 234 4151
Valgrana CN 15 786 4937
Celle di Macra CN 15 100 5037
Pietraporzio CN 15 77 5114
Rittana CN 15 109 5223
Cartignano CN 15 190 5413
Marmora CN 15 68 5481
San Damiano Macra CN 15 430 5911
Gaiola CN 15 582 6493
Canosio CN 16 80 6573
Montemale di Cuneo CN 16 241 6814
Macra CN 17 59 6873
Valdieri CN 17 935 7808
Roccabruna CN 17 1585 9393
Dronero CN 17 7035 16428
Bernezzo CN 18 4104 20532
Roccasparvera CN 18 741 21273
Caraglio CN 18 6836 28109
Stroppo CN 18 103 28212
Entracque CN 19 774 28986
Prazzo CN 19 170 29156
Villar San Costanzo CN 19 1547 30703
Argentera CN 20 83 30786

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km W of Cuneo (56081 inhabitants)
75 Km NW of Sanremo (54807 inhabitants)
81 Km SW of Moncalieri (57294 inhabitants)
88 Km SW of Torino (890529 inhabitants)
99 Km SW of Asti (76202 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 2.0 1986-05-21
04:55:01
44.36 7.22 9 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 27769
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-05-21 04:55:01 ± 0.107
Latitude 44.36 ± 0.01
Longitude 7.22 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 27769

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) 1170.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00113
Epicentral distance of station farthest from the epicenter (degree) 0.0102
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

Md:2

Field Value
Value 2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 27769
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:29:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FIN.Z. 1986-05-21T04:55:25.80 10.0 undecidable manual SG 101 0.0065 -0.71 0.1
--.LMR.Z. 1986-05-21T04:55:23.10 10.0 undecidable manual PN 206 0.0102 0.11 1.1
--.IMP.Z. 1986-05-21T04:55:23.40 10.0 undecidable manual SG 131 0.0058 -0.82 0
--.LRG.Z. 1986-05-21T04:55:22.40 10.0 undecidable manual PN 214 0.0098 0.1 1.1
--.ROB.Z. 1986-05-21T04:55:18.50 10.0 undecidable manual SG 96 0.0042 0.1 0.7
--.FIN.Z. 1986-05-21T04:55:15.90 10.0 undecidable manual PG 101 0.0065 0.15 1.4
--.IMP.Z. 1986-05-21T04:55:14.30 10.0 undecidable manual PG 131 0.0058 -0.13 1.5
--.ROB.Z. 1986-05-21T04:55:11.60 10.0 undecidable manual PG 96 0.0042 0.53 0.5
--.SBF.Z. 1986-05-21T04:55:11.70 10.0 undecidable manual PG 162 0.0046 -0.18 1.6
--.ENR.Z. 1986-05-21T04:55:08.80 10.0 undecidable manual SG 131 0.0017 -0.3 0.8
--.DA9.Z. 1986-05-21T04:55:07.50 10.0 undecidable manual SG 7 0.0013 -0.03 0.8
--.SOO.Z. 1986-05-21T04:55:07.70 10.0 undecidable manual SG 331 0.0015 -0.57 0.2
--.STV.Z. 1986-05-21T04:55:06.70 10.0 undecidable manual SG 142 0.0011 -0.22 0.9
--.ENR.Z. 1986-05-21T04:55:05.90 10.0 undecidable manual PG 131 0.0017 0.2 1.6
--.DA9.Z. 1986-05-21T04:55:05.00 10.0 undecidable manual PG 7 0.0013 0.21 1.6
--.SOO.Z. 1986-05-21T04:55:05.10 10.0 undecidable manual PG 331 0.0015 -0.12 1.9
--.STV.Z. 1986-05-21T04:55:04.80 10.0 undecidable manual PG 142 0.0011 0.36 1.1
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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