Earthquake with magnitude of Md 2.7 on date 06-02-1986 and time 08:59:01 (Italy) in region 2 km S Vernante (CN)

A magnitude Md 2.7 earthquake occured in region: 2 km S Vernante (CN), on

  • 06-02-1986 07:59:01 (UTC)
  • 06-02-1986 08:59:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2250, 7.5300 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
Vernante CN 2 1178 1178
Limone Piemonte CN 5 1485 2663
Roaschia CN 8 107 2770
Robilante CN 8 2306 5076
Entracque CN 11 774 5850
Roccavione CN 11 2761 8611
Boves CN 12 9835 18446
Borgo San Dalmazzo CN 12 12468 30914
Valdieri CN 12 935 31849
Peveragno CN 14 5543 37392
Roccasparvera CN 15 741 38133
Moiola CN 15 234 38367
Gaiola CN 16 582 38949
Vignolo CN 16 2600 41549
Chiusa di Pesio CN 16 3676 45225
Rittana CN 17 109 45334
Valloriate CN 18 109 45443
Cervasca CN 18 5013 50456
Beinette CN 18 3423 53879
Cuneo CN 19 56081 109960
Bernezzo CN 20 4104 114064

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km S of Cuneo (56081 inhabitants)
49 Km NW of Sanremo (54807 inhabitants)
76 Km W of Savona (61345 inhabitants)
87 Km S of Moncalieri (57294 inhabitants)
92 Km SW of Asti (76202 inhabitants)
95 Km S of Torino (890529 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 2.7 1986-02-06
07:59:01
44.225 7.53 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 22159
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-02-06 07:59:01 ± 0.219
Latitude 44.2250 ± 0.0173
Longitude 7.5300 ± 0.0199
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 22159

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) 2490.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00065
Epicentral distance of station farthest from the epicenter (degree) 0.03586
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

Md:2.7

Field Value
Value 2.7
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 22159
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:24:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.SSF.Z. 1986-02-06T08:00:04.50 10.0 undecidable manual PN 316 3.9849 0.9 0.6
--.AVF.Z. 1986-02-06T08:00:04.20 10.0 undecidable manual PN 312 3.885 2.01 0.1
--.LBF.Z. 1986-02-06T08:00:01.80 10.0 undecidable manual PN 319 3.7074 2.06 0.1
--.SMF.Z. 1986-02-06T07:59:59.70 10.0 undecidable manual PN 314 3.5298 2.29 0.1
--.ORX.-. 1986-02-06T07:59:48.70 10.0 undecidable manual SN 12 1.443 0.6 0.5
--.LSD.-. 1986-02-06T07:59:42.80 10.0 undecidable manual SN 347 1.2543 -0.96 0.3
--.BN9.Z. 1986-02-06T07:59:37.50 10.0 undecidable manual SG 323 1.0101 -0.23 0.9
--.CVF.Z. 1986-02-06T07:59:34.60 10.0 undecidable manual PN 149 1.9092 -0.56 0.8
--.RRL.-. 1986-02-06T07:59:31.50 10.0 undecidable manual SG 322 0.8769 -1.4 0.2
--.LPG.Z. 1986-02-06T07:59:28.40 10.0 undecidable manual PN 336 1.3875 0.58 1.4
--.ORX.-. 1986-02-06T07:59:27.70 10.0 undecidable manual PN 12 1.443 -0.89 0.8
--.LSD.-. 1986-02-06T07:59:25.60 10.0 undecidable manual PN 347 1.2543 -0.49 1.3
--.LMR.Z. 1986-02-06T07:59:24.50 10.0 undecidable manual PN 219 1.1544 -0.15 1.4
--.CKI.Z. 1986-02-06T07:59:23.50 10.0 undecidable manual SG 69 0.5661 0.39 0.6
--.BN9.Z. 1986-02-06T07:59:22.50 10.0 negative manual PG 323 1.0101 -0.11 3.1
--.FIN.-. 1986-02-06T07:59:20.00 10.0 undecidable manual SG 91 0.4884 -0.44 0.6
--.RRL.-. 1986-02-06T07:59:19.40 10.0 undecidable manual PG 322 0.8769 -0.42 1.3
--.IMP.-. 1986-02-06T07:59:17.10 10.0 undecidable manual SG 139 0.3996 -0.48 0.4
--.SOO.-. 1986-02-06T07:59:16.70 10.0 undecidable manual SG 312 0.4107 -1.33 0.2
--.CKI.Z. 1986-02-06T07:59:14.80 10.0 undecidable manual PG 69 0.5661 0.63 1.3
--.DA9.Z. 1986-02-06T07:59:14.00 10.0 undecidable manual SG 323 0.3441 -1.35 0.3
--.FIN.-. 1986-02-06T07:59:12.70 10.0 negative manual PG 91 0.4884 0.07 1.6
--.SOO.-. 1986-02-06T07:59:11.00 10.0 undecidable manual PG 312 0.4107 -0.23 1.4
--.DA9.Z. 1986-02-06T07:59:10.00 10.0 positive manual PG 323 0.3441 0.31 3.2
--.IMP.-. 1986-02-06T07:59:10.80 10.0 negative manual PG 139 0.3996 -0.18 1.4
--.STV.-. 1986-02-06T07:59:05.50 10.0 undecidable manual PG 280 0.1443 0.15 1.6
--.ENR.-. 1986-02-06T07:59:04.40 10.0 undecidable manual PG 271 0.0666 0.44 1.6
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download