Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 3.0 on date 28-05-1989 and time 22:19:45 (Italy) in region 2 km NW Sanfront (CN)

A magnitude Md 3.0 earthquake occured in region: 2 km NW Sanfront (CN), on

  • 28-05-1989 20:19:45 (UTC)
  • 28-05-1989 22:19:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.6600, 7.3110 at 15 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
Sanfront CN 2 2395 2395
Rifreddo CN 3 1078 3473
Paesana CN 4 2784 6257
Gambasca CN 4 371 6628
Envie CN 6 2074 8702
Martiniana Po CN 6 734 9436
Revello CN 6 4262 13698
Barge CN 7 7774 21472
Oncino CN 10 76 21548
Isasca CN 10 76 21624
Brondello CN 10 290 21914
Frassino CN 10 265 22179
Ostana CN 10 83 22262
Brossasco CN 11 1084 23346
Pagno CN 11 585 23931
Castellar CN 11 295 24226
Melle CN 11 292 24518
Bagnolo Piemonte CN 11 6024 30542
Venasca CN 13 1437 31979
Crissolo CN 13 168 32147
Sampeyre CN 13 1022 33169
Valmala CN 13 52 33221
Saluzzo CN 14 16960 50181
Cavour TO 15 5545 55726
Manta CN 15 3787 59513
Verzuolo CN 15 6459 65972
Piasco CN 15 2774 68746
Bibiana TO 16 3442 72188
Campiglione Fenile TO 16 1390 73578
Rossana CN 16 908 74486
Cardè CN 16 1122 75608
Lusernetta TO 17 506 76114
Rorà TO 17 257 76371
Costigliole Saluzzo CN 17 3375 79746
Luserna San Giovanni TO 18 7395 87141
Bricherasio TO 19 4616 91757
Torre Pellice TO 19 4551 96308
San Damiano Macra CN 19 430 96738
Torre San Giorgio CN 19 730 97468
Lagnasco CN 20 1453 98921

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of Cuneo (56081 inhabitants)
48 Km SW of Moncalieri (57294 inhabitants)
55 Km SW of Torino (890529 inhabitants)
76 Km W of Asti (76202 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 3.0
ML-VAX 2.2 		1989-05-28
20:19:45		 44.66 7.311 15 2013-07-15
08:40:51		 Bollettino Sismico Italiano INGV 92269
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1989-05-28 20:19:45 ± 0.195
Latitude 44.6600 ± 0.0163
Longitude 7.3110 ± 0.0250
Depth (km) 15 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 92269

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) 2679.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.6
Epicentral distance of station closest to the epicenter (degree) 0.00146
Epicentral distance of station farthest from the epicenter (degree) 0.01295
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

Md:3.0

Field Value
Value 3.0
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 92269
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 18:26:32

ML:2.2

Field Value
Value 2.2
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 92269
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
--.FRF.Z. 1989-05-28T20:20:21.90 10.0 undecidable manual SN 203 1.1988 -1.79 0.1
--.ORO.Z. 1989-05-28T20:20:19.50 10.0 undecidable manual SN 25 1.0656 -1.77 0.1
--.LPG.Z. 1989-05-28T20:20:16.20 10.0 undecidable manual SN 334 0.9213 -1.03 0.4
--.LPL.Z. 1989-05-28T20:20:16.80 10.0 undecidable manual SN 334 0.9435 -0.98 0.4
--.LSD.Z. 1989-05-28T20:20:13.16 10.0 undecidable manual SG 352 0.7992 -0.38 0.7
--.LMR.Z. 1989-05-28T20:20:12.50 10.0 undecidable manual PN 203 1.443 1.46 0.3
--.FIN.Z. 1989-05-28T20:20:12.24 10.0 undecidable manual SG 124 0.777 -0.59 0.6
--.IMI.Z. 1989-05-28T20:20:12.85 10.0 undecidable manual SG 150 0.8547 -2.31 0
--.CKI.Z. 1989-05-28T20:20:11.68 10.0 undecidable manual SG 108 0.7326 0.55 0.6
--.SBF.Z. 1989-05-28T20:20:11.60 10.0 undecidable manual SG 173 0.7992 -1.79 0.1
--.LRG.Z. 1989-05-28T20:20:11.70 10.0 undecidable manual PN 209 1.3764 1.5 0.3
--.FRF.Z. 1989-05-28T20:20:08.50 10.0 undecidable manual PN 203 1.1988 0.86 0.9
--.ORO.Z. 1989-05-28T20:20:05.26 10.0 undecidable manual PN 25 1.0656 -0.73 1.1
--.BNI.Z. 1989-05-28T20:20:05.98 10.0 undecidable manual SG 311 0.5883 -0.82 0.8
--.LPL.Z. 1989-05-28T20:20:04.70 10.0 undecidable manual PN 334 0.9435 0.48 1.5
--.ROB.Z. 1989-05-28T20:20:04.75 10.0 undecidable manual SG 131 0.5328 -0.2 0.7
--.LPG.Z. 1989-05-28T20:20:04.10 10.0 undecidable manual PN 334 0.9213 0.19 1.7
--.IMI.Z. 1989-05-28T20:20:02.29 10.0 undecidable manual PG 150 0.8547 -0.43 1.6
--.LSD.Z. 1989-05-28T20:20:02.70 10.0 undecidable manual PG 352 0.7992 0.92 1.1
--.FIN.Z. 1989-05-28T20:20:01.78 10.0 undecidable manual PG 124 0.777 0.41 1.7
--.RRL.Z. 1989-05-28T20:20:01.27 10.0 undecidable manual SG 304 0.444 -1.07 0.4
--.CKI.Z. 1989-05-28T20:20:01.25 10.0 undecidable manual PG 108 0.7326 0.86 1.2
--.SBF.Z. 1989-05-28T20:20:01.30 10.0 undecidable manual PG 173 0.7992 -0.4 1.7
--.ENR.Z. 1989-05-28T20:19:59.93 10.0 undecidable manual SG 169 0.4329 -1.91 0.1
--.ROB.Z. 1989-05-28T20:19:57.57 10.0 undecidable manual PG 131 0.5328 0.75 1.3
--.BNI.Z. 1989-05-28T20:19:57.95 10.0 undecidable manual PG 311 0.5883 0.06 1.9
--.RRL.Z. 1989-05-28T20:19:55.42 10.0 undecidable manual PG 304 0.444 0.1 1.9
--.DOI.Z. 1989-05-28T20:19:54.34 10.0 undecidable manual SG 196 0.1665 0.97 0.6
--.ENR.Z. 1989-05-28T20:19:54.60 10.0 undecidable manual PG 169 0.4329 -0.43 1.7
--.DOI.Z. 1989-05-28T20:19:50.24 10.0 negative manual PG 196 0.1665 0.1 3.8
--.PZZ.Z. 1989-05-28T20:19:50.40 10.0 undecidable manual PG 224 0.2109 -0.59 1.5
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