Earthquake with magnitude of Md 2.0 on date 17-08-1987 and time 03:01:19 (Italy) in region 4 km NW Pradleves (CN)

A magnitude Md 2.0 earthquake occured in region: 4 km NW Pradleves (CN), on

  • 17-08-1987 01:01:19 (UTC)
  • 17-08-1987 03:01:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.45, 7.26 at 13 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
Pradleves CN 4 250 250
Cartignano CN 4 190 440
San Damiano Macra CN 5 430 870
Castelmagno CN 6 66 936
Monterosso Grana CN 7 505 1441
Roccabruna CN 7 1585 3026
Celle di Macra CN 8 100 3126
Dronero CN 9 7035 10161
Macra CN 9 59 10220
Montemale di Cuneo CN 9 241 10461
Villar San Costanzo CN 10 1547 12008
Valgrana CN 10 786 12794
Stroppo CN 13 103 12897
Valmala CN 13 52 12949
Marmora CN 13 68 13017
Caraglio CN 14 6836 19853
Melle CN 14 292 20145
Frassino CN 14 265 20410
Canosio CN 14 80 20490
Demonte CN 15 2003 22493
Valloriate CN 15 109 22602
Aisone CN 15 248 22850
Bernezzo CN 15 4104 26954
Rittana CN 15 109 27063
Sampeyre CN 16 1022 28085
Brossasco CN 16 1084 29169
Prazzo CN 17 170 29339
Venasca CN 17 1437 30776
Vinadio CN 17 644 31420
Gaiola CN 17 582 32002
Elva CN 17 97 32099
Rossana CN 17 908 33007
Moiola CN 17 234 33241
Cervasca CN 18 5013 38254
Isasca CN 18 76 38330
Roccasparvera CN 19 741 39071
Busca CN 19 10181 49252
Sambuco CN 19 92 49344
Vignolo CN 19 2600 51944

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km W of Cuneo (56081 inhabitants)
70 Km SW of Moncalieri (57294 inhabitants)
77 Km SW of Torino (890529 inhabitants)
81 Km NW of Sanremo (54807 inhabitants)
90 Km SW of Asti (76202 inhabitants)
98 Km W of Savona (61345 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
M 1.9
1987-08-17
01:01:19
44.45 7.26 13 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 54079
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1987-08-17 01:01:19 ± 0.155
Latitude 44.45 ± 0.01
Longitude 7.26 ± 0.01
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 54079

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) 967.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 183
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) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00049
Epicentral distance of station farthest from the epicenter (degree) 0.00639
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2

Field Value
Value 2
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 54079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:52:09

M:1.9

Field Value
Value 1.9
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 54079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 09:48:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.FIN.Z. 1987-08-17T01:01:44.20 10.0 undecidable manual SG 109 0.0064 -0.04 0.6
--.ROB.Z. 1987-08-17T01:01:36.20 10.0 undecidable manual SG 108 0.0041 0.2 0.1
--.FIN.Z. 1987-08-17T01:01:33.60 10.0 undecidable manual PG 109 0.0064 -0.08 1.1
--.ROB.Z. 1987-08-17T01:01:28.90 10.0 undecidable manual PG 108 0.0041 -0.03 1.9
--.STV.Z. 1987-08-17T01:01:27.60 10.0 undecidable manual SG 165 0.0018 -0.17 0.2
--.STV.Z. 1987-08-17T01:01:24.30 10.0 undecidable manual PG 165 0.0018 0.12 1.1
--.DOI.Z. 1987-08-17T01:01:24.00 10.0 undecidable manual SG 348 0.0005 -0.01 0.9
--.DOI.Z. 1987-08-17T01:01:22.00 10.0 undecidable manual PG 348 0.0005 0 2.2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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