Earthquake with magnitude of Md 1.9 on date 06-05-1986 and time 08:18:50 (UTC) in region 2 km N Rittana (CN)

A magnitude Md 1.9 earthquake occured in region: 2 km N Rittana (CN), on

  • 06-05-1986 08:18:50 (UTC)
  • 06-05-1986 10:18:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.37, 7.4 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
Rittana CN 2 109 109
Bernezzo CN 4 4104 4213
Valloriate CN 4 109 4322
Gaiola CN 4 582 4904
Valgrana CN 4 786 5690
Roccasparvera CN 5 741 6431
Moiola CN 6 234 6665
Caraglio CN 6 6836 13501
Cervasca CN 6 5013 18514
Vignolo CN 6 2600 21114
Monterosso Grana CN 7 505 21619
Montemale di Cuneo CN 8 241 21860
Borgo San Dalmazzo CN 9 12468 34328
Roccavione CN 9 2761 37089
Demonte CN 10 2003 39092
Valdieri CN 10 935 40027
Pradleves CN 10 250 40277
Dronero CN 11 7035 47312
Roaschia CN 12 107 47419
Roccabruna CN 13 1585 49004
Villar San Costanzo CN 13 1547 50551
Robilante CN 13 2306 52857
Cuneo CN 13 56081 108938
Boves CN 13 9835 118773
Cartignano CN 15 190 118963
Entracque CN 15 774 119737
Castelmagno CN 15 66 119803
Aisone CN 15 248 120051
Busca CN 17 10181 130232
San Damiano Macra CN 17 430 130662
Vernante CN 18 1178 131840
Tarantasca CN 18 2122 133962
Peveragno CN 18 5543 139505
Vinadio CN 19 644 140149
Rossana CN 19 908 141057
Valmala CN 20 52 141109
Beinette CN 20 3423 144532

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km W of Cuneo (56081 inhabitants)
69 Km NW of Sanremo (54807 inhabitants)
74 Km SW of Moncalieri (57294 inhabitants)
81 Km S of Torino (890529 inhabitants)
87 Km W of Savona (61345 inhabitants)
87 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 1.9 1986-05-06
08:18:50
44.37 7.4 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 26639
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-05-06 08:18:50 ± 0.147
Latitude 44.37 ± 0.01
Longitude 7.40 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 26639

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) 1524.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 144
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00113
Epicentral distance of station farthest from the epicenter (degree) 0.00542
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:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 26639
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:28:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FIN.Z. 1986-05-06T08:19:11.70 10.0 undecidable manual SG 105 0.0054 -0.42 0.3
--.FIN.Z. 1986-05-06T08:19:03.50 10.0 undecidable manual PG 105 0.0054 0.39 0.9
--.DA9.Z. 1986-05-06T08:18:58.00 10.0 undecidable manual SG 320 0.0015 -0.18 0.8
--.STV.Z. 1986-05-06T08:18:56.70 10.0 undecidable manual SG 201 0.0011 -0.17 0.8
--.DA9.Z. 1986-05-06T08:18:55.00 10.0 undecidable manual PG 320 0.0015 -0.06 2.3
--.STV.Z. 1986-05-06T08:18:54.80 10.0 undecidable manual PG 201 0.0011 0.5 1
--.ENR.Z. 1986-05-06T08:18:54.10 10.0 undecidable manual PG 173 0.0013 -0.52 0.9
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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