Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.0 on date 06-03-1991 and time 22:30:38 (UTC) in region 5 km NW Pradleves (CN)

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

  • 06-03-1991 22:30:38 (UTC)
  • 06-03-1991 23:30:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.4480, 7.2410 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.

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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 5 250 250
Castelmagno CN 5 66 316
San Damiano Macra CN 5 430 746
Cartignano CN 5 190 936
Celle di Macra CN 6 100 1036
Macra CN 8 59 1095
Monterosso Grana CN 8 505 1600
Roccabruna CN 9 1585 3185
Dronero CN 10 7035 10220
Montemale di Cuneo CN 11 241 10461
Stroppo CN 11 103 10564
Marmora CN 12 68 10632
Villar San Costanzo CN 12 1547 12179
Valgrana CN 12 786 12965
Canosio CN 13 80 13045
Valmala CN 14 52 13097
Frassino CN 14 265 13362
Melle CN 14 292 13654
Aisone CN 15 248 13902
Prazzo CN 15 170 14072
Demonte CN 15 2003 16075
Sampeyre CN 15 1022 17097
Caraglio CN 15 6836 23933
Elva CN 16 97 24030
Valloriate CN 16 109 24139
Vinadio CN 16 644 24783
Brossasco CN 17 1084 25867
Rittana CN 17 109 25976
Bernezzo CN 17 4104 30080
Sambuco CN 18 92 30172
Venasca CN 18 1437 31609
Gaiola CN 18 582 32191
Moiola CN 19 234 32425
Rossana CN 19 908 33333
Isasca CN 19 76 33409
Cervasca CN 19 5013 38422
Roccasparvera CN 20 741 39163

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km W of Cuneo (56081 inhabitants)
71 Km SW of Moncalieri (57294 inhabitants)
78 Km SW of Torino (890529 inhabitants)
82 Km NW of Sanremo (54807 inhabitants)
91 Km SW of Asti (76202 inhabitants)
100 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 		Md 2.0
M 2.3 		1991-03-06
22:30:38		 44.448 7.241 10 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 137209
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-03-06 22:30:38 ± 0.134
Latitude 44.4480 ± 0.0096
Longitude 7.2410 ± 0.0144
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 137209

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) 1570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00049
Epicentral distance of station farthest from the epicenter (degree) 0.01174
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 137209
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:07:56

M:2.3

Field Value
Value 2.3
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 137209
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
--.LMR.Z. 1991-03-06T22:31:17.00 10.0 undecidable manual SN 205 1.221 -0.77 0.3
--.LRG.Z. 1991-03-06T22:31:16.40 10.0 undecidable manual SN 212 1.1655 -0.08 0.6
--.LPL.Z. 1991-03-06T22:31:15.20 10.0 undecidable manual SN 341 1.1211 -0.06 0.6
--.FRF.Z. 1991-03-06T22:31:09.20 10.0 undecidable manual SG! 205 0.9768 -2.31 0
--.FIN.Z. 1991-03-06T22:31:02.92 10.0 undecidable manual SG 108 0.7326 -0.51 0.5
--.CDR.Z. 1991-03-06T22:31:02.80 10.0 undecidable manual PN 234 1.2987 0.76 0.6
--.IMI.Z. 1991-03-06T22:31:01.88 10.0 undecidable manual SG 138 0.7104 -0.88 0.3
--.LMR.Z. 1991-03-06T22:31:01.10 10.0 undecidable manual PN 205 1.221 0.14 1.4
--.LRG.Z. 1991-03-06T22:31:00.80 10.0 undecidable manual PN 212 1.1655 0.58 0.9
--.LPL.Z. 1991-03-06T22:31:00.60 10.0 undecidable manual PN 341 1.1211 1.08 0.3
--.SBF.Z. 1991-03-06T22:30:58.00 10.0 undecidable manual SG 166 0.5883 -1.19 0.1
--.RRL.Z. 1991-03-06T22:30:57.30 10.0 undecidable manual SG 325 0.5661 -1.28 0.1
--.FRF.Z. 1991-03-06T22:30:57.10 10.0 undecidable manual PG 205 0.9768 -0.25 1.5
--.PCP.Z. 1991-03-06T22:30:56.23 10.0 undecidable manual PG 83 0.9213 -0.2 1.6
--.ROB.Z. 1991-03-06T22:30:55.65 10.0 undecidable manual SG 107 0.4662 0.5 0.6
--.FIN.Z. 1991-03-06T22:30:52.54 10.0 undecidable manual PG 108 0.7326 -0.15 1.9
--.IMI.Z. 1991-03-06T22:30:51.96 10.0 undecidable manual PG 138 0.7104 -0.34 1.7
--.SBF.Z. 1991-03-06T22:30:50.40 10.0 undecidable manual PG 166 0.5883 0.16 2
--.ROB.Z. 1991-03-06T22:30:48.15 10.0 undecidable manual PG 107 0.4662 0.24 1.9
--.RRL.Z. 1991-03-06T22:30:48.27 10.0 undecidable manual PG 325 0.5661 -1.45 0.1
--.ENR.Z. 1991-03-06T22:30:47.81 10.0 undecidable manual SG 149 0.2553 -0.32 0.7
--.STV.Z. 1991-03-06T22:30:46.19 10.0 undecidable manual SG 162 0.1998 -0.36 0.7
--.BHB.Z. 1991-03-06T22:30:45.88 10.0 undecidable manual PG 2 0.3774 -0.38 1.7
--.ENR.Z. 1991-03-06T22:30:44.20 10.0 undecidable manual PG 149 0.2553 0.17 2
--.STV.Z. 1991-03-06T22:30:43.19 10.0 undecidable manual PG 162 0.1998 0.25 1.9
--.DOI.Z. 1991-03-06T22:30:42.80 10.0 undecidable manual SG 3 0.0555 0.7 0.4
--.PZZ.Z. 1991-03-06T22:30:42.96 10.0 undecidable manual SG 299 0.111 -0.66 0.5
--.DOI.Z. 1991-03-06T22:30:41.00 10.0 undecidable manual PG 3 0.0555 0.63 1.2
--.PZZ.Z. 1991-03-06T22:30:41.23 10.0 undecidable manual PG 299 0.111 -0.02 2.1
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