Earthquake with magnitude of M 2.0 on date 22-09-1986 and time 00:48:53 (Italy) in region 2 km SW Monterosso Grana (CN)

A magnitude M 2.0 earthquake occured in region: 2 km SW Monterosso Grana (CN), on

  • 21-09-1986 22:48:53 (UTC)
  • 22-09-1986 00:48:53 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.3940, 7.3040 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
Monterosso Grana CN 2 505 505
Pradleves CN 3 250 755
Valgrana CN 6 786 1541
Montemale di Cuneo CN 7 241 1782
Castelmagno CN 7 66 1848
Valloriate CN 8 109 1957
Demonte CN 9 2003 3960
Rittana CN 9 109 4069
Cartignano CN 9 190 4259
Dronero CN 10 7035 11294
Roccabruna CN 10 1585 12879
Caraglio CN 10 6836 19715
Bernezzo CN 11 4104 23819
Gaiola CN 11 582 24401
Moiola CN 11 234 24635
Aisone CN 11 248 24883
San Damiano Macra CN 11 430 25313
Villar San Costanzo CN 12 1547 26860
Roccasparvera CN 12 741 27601
Cervasca CN 13 5013 32614
Vignolo CN 14 2600 35214
Vinadio CN 14 644 35858
Celle di Macra CN 14 100 35958
Valdieri CN 15 935 36893
Macra CN 15 59 36952
Borgo San Dalmazzo CN 16 12468 49420
Roccavione CN 17 2761 52181
Valmala CN 17 52 52233
Marmora CN 18 68 52301
Roaschia CN 18 107 52408
Entracque CN 19 774 53182
Stroppo CN 19 103 53285
Melle CN 19 292 53577
Sambuco CN 19 92 53669
Canosio CN 19 80 53749
Busca CN 19 10181 63930
Rossana CN 20 908 64838
Cuneo CN 20 56081 120919
Frassino CN 20 265 121184
Robilante CN 20 2306 123490

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km W of Cuneo (56081 inhabitants)
74 Km SW of Moncalieri (57294 inhabitants)
74 Km NW of Sanremo (54807 inhabitants)
81 Km SW of Torino (890529 inhabitants)
91 Km SW of Asti (76202 inhabitants)
94 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
Bulletin
Rev1000
M 2.0 1986-09-21
22:48:53
44.394 7.304 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 34459
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-09-21 22:48:53 ± 0.173
Latitude 44.3940 ± 0.0128
Longitude 7.3040 ± 0.0171
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 34459

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) 1969.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 155
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.00130
Epicentral distance of station farthest from the epicenter (degree) 0.00567
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

M:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 34459
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(km) Takeoff_angle Residual Weight
--.IMP.Z. 1986-09-21T22:49:15.10 10.0 undecidable manual SG 138 0.6327 -0.95 0
--.ROB.Z. 1986-09-21T22:49:08.90 10.0 undecidable manual SG 102 0.4107 -0.08 0.7
--.IMP.Z. 1986-09-21T22:49:06.70 10.0 undecidable manual PG 138 0.6327 0.11 1.4
--.ROB.Z. 1986-09-21T22:49:02.60 10.0 undecidable manual PG 102 0.4107 0.09 1.8
--.STV.Z. 1986-09-21T22:49:00.00 10.0 undecidable manual SG 172 0.1443 -0.22 0.8
--.SOO.Z. 1986-09-21T22:49:00.80 10.0 undecidable manual SG 307 0.1776 -0.65 0.2
--.ENR.Z. 1986-09-21T22:49:00.90 10.0 undecidable manual SG 153 0.1776 -0.7 0.2
--.SOO.Z. 1986-09-21T22:48:58.20 10.0 undecidable manual PG 307 0.1776 0.04 2.2
--.ENR.Z. 1986-09-21T22:48:58.70 10.0 undecidable manual PG 153 0.1776 0.45 1.1
--.STV.Z. 1986-09-21T22:48:57.80 10.0 undecidable manual PG 172 0.1443 0.34 1.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download