Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.9 on date 20-01-1994 and time 12:38:35 (Italy) in region 1 km W Melle (CN)

A magnitude Md 2.9 earthquake occured in region: 1 km W Melle (CN), on

  • 20-01-1994 11:38:35 (UTC)
  • 20-01-1994 12:38:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.5580, 7.3060 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
Melle CN 1 292 292
Frassino CN 3 265 557
Valmala CN 4 52 609
Brossasco CN 5 1084 1693
Isasca CN 7 76 1769
Venasca CN 7 1437 3206
San Damiano Macra CN 9 430 3636
Gambasca CN 9 371 4007
Cartignano CN 9 190 4197
Martiniana Po CN 9 734 4931
Brondello CN 9 290 5221
Roccabruna CN 9 1585 6806
Sampeyre CN 10 1022 7828
Sanfront CN 10 2395 10223
Rossana CN 10 908 11131
Villar San Costanzo CN 10 1547 12678
Dronero CN 11 7035 19713
Rifreddo CN 11 1078 20791
Pagno CN 12 585 21376
Macra CN 12 59 21435
Piasco CN 12 2774 24209
Castellar CN 13 295 24504
Revello CN 13 4262 28766
Celle di Macra CN 13 100 28866
Busca CN 14 10181 39047
Costigliole Saluzzo CN 14 3375 42422
Montemale di Cuneo CN 14 241 42663
Paesana CN 15 2784 45447
Envie CN 15 2074 47521
Verzuolo CN 15 6459 53980
Stroppo CN 15 103 54083
Pradleves CN 16 250 54333
Manta CN 16 3787 58120
Oncino CN 16 76 58196
Monterosso Grana CN 17 505 58701
Elva CN 17 97 58798
Valgrana CN 18 786 59584
Ostana CN 18 83 59667
Saluzzo CN 18 16960 76627
Castelmagno CN 18 66 76693
Caraglio CN 18 6836 83529
Villafalletto CN 19 2925 86454
Barge CN 19 7774 94228
Casteldelfino CN 19 157 94385
Crissolo CN 20 168 94553

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Cuneo (56081 inhabitants)
58 Km SW of Moncalieri (57294 inhabitants)
65 Km SW of Torino (890529 inhabitants)
81 Km W of Asti (76202 inhabitants)
90 Km NW of Sanremo (54807 inhabitants)
97 Km W of Savona (61345 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 2.9
ML-VAX 2.6 		1994-01-20
11:38:35		 44.558 7.306 10 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 204089
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-01-20 11:38:35 ± 0.133
Latitude 44.5580 ± 0.0085
Longitude 7.3060 ± 0.0156
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 204089

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) 1553.3
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
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) 0.00057
Epicentral distance of station farthest from the epicenter (degree) 0.02113
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

Md:2.9

Field Value
Value 2.9
Uncertainty
Num. used stations 1
Type of magnitude Md
Reference to an origin 204089
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:12:02

ML:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 204089
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.PGF.Z. 1994-01-20T11:39:14.27 10.0 undecidable manual PN 147 2.3421 0.39 0.5
--.ORO.Z. 1994-01-20T11:39:12.72 10.0 undecidable manual SN 23 1.1655 -1.14 0
--.BOB.Z. 1994-01-20T11:39:03.00 10.0 undecidable manual PN 81 1.5318 0.34 0.7
--.CKI.Z. 1994-01-20T11:39:01.10 10.0 undecidable manual SG 100 0.6993 0.97 0
--.SBF.Z. 1994-01-20T11:38:59.58 10.0 undecidable manual SG 172 0.6882 -0.34 0.5
--.BNI.Z. 1994-01-20T11:38:58.45 10.0 undecidable manual SG 318 0.6549 -0.34 0.5
--.ORX.Z. 1994-01-20T11:38:57.00 10.0 undecidable manual PN 23 1.1655 -0.7 0.3
--.ORO.Z. 1994-01-20T11:38:56.76 10.0 undecidable manual PN 23 1.1655 -0.88 0.1
--.PCP.Z. 1994-01-20T11:38:53.70 10.0 undecidable manual PG 90 0.8769 0.11 1.4
--.LSD.Z. 1994-01-20T11:38:53.31 10.0 undecidable manual PG 353 0.8991 -0.09 1.4
--.IMI.Z. 1994-01-20T11:38:50.73 10.0 undecidable manual PG 146 0.7659 -0.18 1.4
--.BNI.Z. 1994-01-20T11:38:49.37 10.0 undecidable manual PG 318 0.6549 0.43 0.9
--.CKI.Z. 1994-01-20T11:38:49.70 10.0 undecidable manual PG 100 0.6993 -0.01 1.6
--.SBF.Z. 1994-01-20T11:38:49.81 10.0 undecidable manual PG 172 0.6882 0.22 1.4
--.FIN.Z. 1994-01-20T11:38:49.98 10.0 undecidable manual PG 118 0.7326 -0.22 1.4
--.RSP.Z. 1994-01-20T11:38:47.79 10.0 undecidable manual PG 356 0.5883 0.16 1.5
--.RRL.Z. 1994-01-20T11:38:46.54 10.0 undecidable manual PG 314 0.5106 0.32 1.2
--.ROB.Z. 1994-01-20T11:38:45.70 10.0 undecidable manual PG 122 0.4773 0.22 1.4
--.BHB.Z. 1994-01-20T11:38:42.57 10.0 undecidable manual PG 353 0.2664 0.81 0.3
--.STV.Z. 1994-01-20T11:38:42.29 10.0 undecidable manual PG 176 0.3108 -0.01 1.6
--.ENR.Z. 1994-01-20T11:38:42.65 10.0 undecidable manual PG 166 0.333 -0.28 1.3
--.DOI.Z. 1994-01-20T11:38:39.70 10.0 undecidable manual SG 218 0.0666 -0.71 0.2
--.PZZ.Z. 1994-01-20T11:38:39.53 10.0 undecidable manual PG 250 0.1554 0.09 1.5
--.DOI.Z. 1994-01-20T11:38:37.95 10.0 negative manual PG 218 0.0666 -0.01 3.1
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