Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.5 on date 09-10-1991 and time 00:14:37 (UTC) in region 2 km NW Boves (CN)

A magnitude Md 2.5 earthquake occured in region: 2 km NW Boves (CN), on

  • 09-10-1991 00:14:37 (UTC)
  • 09-10-1991 01:14:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.3490, 7.5400 at 8 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
Boves CN 2 9835 9835
Borgo San Dalmazzo CN 5 12468 22303
Cuneo CN 5 56081 78384
Vignolo CN 6 2600 80984
Roccavione CN 6 2761 83745
Robilante CN 6 2306 86051
Peveragno CN 7 5543 91594
Cervasca CN 7 5013 96607
Roccasparvera CN 8 741 97348
Beinette CN 9 3423 100771
Bernezzo CN 9 4104 104875
Gaiola CN 11 582 105457
Roaschia CN 11 107 105564
Rittana CN 11 109 105673
Chiusa di Pesio CN 11 3676 109349
Vernante CN 11 1178 110527
Caraglio CN 12 6836 117363
Moiola CN 12 234 117597
Valloriate CN 13 109 117706
Margarita CN 13 1441 119147
Castelletto Stura CN 13 1351 120498
Pianfei CN 14 2202 122700
Valdieri CN 14 935 123635
Valgrana CN 14 786 124421
Morozzo CN 16 2086 126507
Tarantasca CN 16 2122 128629
Montanera CN 16 760 129389
Entracque CN 16 774 130163
Montemale di Cuneo CN 17 241 130404
Limone Piemonte CN 17 1485 131889
Roccaforte Mondovì CN 17 2085 133974
Villanova Mondovì CN 18 5792 139766
Centallo CN 18 6954 146720
Monterosso Grana CN 18 505 147225
Rocca de' Baldi CN 19 1662 148887
Busca CN 19 10181 159068
Dronero CN 19 7035 166103
Demonte CN 20 2003 168106
Villar San Costanzo CN 20 1547 169653

Municipalities with at least 50000 inhabitants

An earthquake occurred to
5 Km S of Cuneo (56081 inhabitants)
62 Km NW of Sanremo (54807 inhabitants)
74 Km S of Moncalieri (57294 inhabitants)
75 Km W of Savona (61345 inhabitants)
81 Km SW of Asti (76202 inhabitants)
81 Km S of Torino (890529 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 2.5
M 2.5 		1991-10-09
00:14:37		 44.349 7.54 8 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 150729
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1991-10-09 00:14:37 ± 0.168
Latitude 44.3490 ± 0.0134
Longitude 7.5400 ± 0.0126
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 150729

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) 1791.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
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) 0.00130
Epicentral distance of station farthest from the epicenter (degree) 0.01295
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 150729
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:20:40

M:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations
Type of magnitude M
Reference to an origin 150729
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
--.CDR.Z. 1991-10-09T00:15:23.50 10.0 undecidable manual SN 242 1.443 1.11 0.1
--.BNI.Z. 1991-10-09T00:15:07.93 10.0 undecidable manual SG 319 0.9213 -1.33 0.1
--.CDR.Z. 1991-10-09T00:15:05.20 10.0 undecidable manual PN 242 1.443 1.99 0
--.RSP.Z. 1991-10-09T00:15:04.21 10.0 undecidable manual SG 345 0.8214 -1.69 0
--.PCP.Z. 1991-10-09T00:15:03.39 10.0 undecidable manual SG 74 0.7326 0.2 0.6
--.RRL.Z. 1991-10-09T00:15:03.49 10.0 undecidable manual SG 316 0.777 -1.04 0.2
--.ORX.Z. 1991-10-09T00:15:02.47 10.0 undecidable manual PN 13 1.3098 0.93 0.5
--.LSD.Z. 1991-10-09T00:14:58.67 10.0 undecidable manual PN 346 1.1322 -0.41 1.1
--.BNI.Z. 1991-10-09T00:14:55.54 10.0 undecidable manual PG 319 0.9213 -0.09 1.5
--.CKI.Z. 1991-10-09T00:14:55.59 10.0 undecidable manual SG 82 0.5328 -0.86 0.3
--.FIN.Z. 1991-10-09T00:14:54.78 10.0 undecidable manual SG 106 0.4995 -0.6 0.5
--.IMI.Z. 1991-10-09T00:14:54.57 10.0 undecidable manual SG 149 0.4995 -1.04 0.2
--.RSP.Z. 1991-10-09T00:14:53.14 10.0 undecidable manual PG 345 0.8214 -0.54 1.2
--.PCP.Z. 1991-10-09T00:14:52.73 10.0 undecidable manual PG 74 0.7326 0.61 1.2
--.RRL.Z. 1991-10-09T00:14:52.93 10.0 undecidable manual PG 316 0.777 0.04 1.6
--.PZZ.Z. 1991-10-09T00:14:50.37 10.0 undecidable manual SG 296 0.3441 -0.21 0.7
--.CKI.Z. 1991-10-09T00:14:48.37 10.0 undecidable manual PG 82 0.5328 0.14 1.8
--.BHB.Z. 1991-10-09T00:14:48.25 10.0 undecidable manual PG 337 0.5217 0.19 1.8
--.IMI.Z. 1991-10-09T00:14:47.29 10.0 undecidable manual PG 149 0.4995 -0.46 1.4
--.DOI.Z. 1991-10-09T00:14:47.75 10.0 undecidable manual SG 306 0.2553 0.36 0.6
--.FIN.Z. 1991-10-09T00:14:47.50 10.0 undecidable manual PG 106 0.4995 -0.11 1.8
--.ROB.Z. 1991-10-09T00:14:46.88 10.0 undecidable manual SG 100 0.2331 0.15 0.7
--.PZZ.Z. 1991-10-09T00:14:44.73 10.0 undecidable manual PG 296 0.3441 -0.11 1.8
--.DOI.Z. 1991-10-09T00:14:43.38 10.0 negative manual PG 306 0.2553 0.38 3.2
--.STV.Z. 1991-10-09T00:14:43.91 10.0 undecidable manual SG 236 0.1665 -0.5 0.6
--.ROB.Z. 1991-10-09T00:14:42.99 10.0 undecidable manual PG 100 0.2331 0.37 1.6
--.ENR.Z. 1991-10-09T00:14:42.41 10.0 undecidable manual SG 214 0.1443 -0.93 0.3
--.STV.Z. 1991-10-09T00:14:41.14 10.0 undecidable manual PG 236 0.1665 -0.14 1.8
--.ENR.Z. 1991-10-09T00:14:40.25 10.0 undecidable manual PG 214 0.1443 -0.41 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