Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 3.5 on date 05-02-1994 and time 01:52:11 (Italy) in region 1 km NW Sant'Ambrogio di Torino (TO)

A magnitude Md 3.5 earthquake occured in region: 1 km NW Sant'Ambrogio di Torino (TO), on

  • 05-02-1994 00:52:11 (UTC)
  • 05-02-1994 01:52:11 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.1090, 7.3560 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Sant'Ambrogio di Torino TO 1 4755 4755
Caprie TO 2 2086 6841
Chiusa di San Michele TO 2 1647 8488
Villar Dora TO 3 2932 11420
Almese TO 3 6401 17821
Condove TO 4 4638 22459
Valgioie TO 4 951 23410
Rubiana TO 4 2400 25810
Avigliana TO 5 12516 38326
Vaie TO 5 1458 39784
Sant'Antonino di Susa TO 6 4306 44090
Giaveno TO 7 16455 60545
Coazze TO 8 3287 63832
Buttigliera Alta TO 8 6419 70251
Reano TO 9 1818 72069
Borgone Susa TO 9 2229 74298
Val della Torre TO 9 3869 78167
Trana TO 9 3877 82044
Rosta TO 10 4903 86947
Villar Focchiardo TO 10 2042 88989
Caselette TO 10 3060 92049
Villarbasse TO 11 3509 95558
San Didero TO 11 551 96109
Sangano TO 12 3707 99816
Givoletto TO 13 3914 103730
Bruzolo TO 13 1524 105254
Bruino TO 13 8639 113893
Alpignano TO 13 17008 130901
Cumiana TO 14 7826 138727
San Giorio di Susa TO 14 1024 139751
Lemie TO 14 179 139930
San Gillio TO 15 3174 143104
Viù TO 15 1051 144155
Rivoli TO 15 48791 192946
Pianezza TO 15 15152 208098
Chianocco TO 15 1675 209773
La Cassa TO 15 1788 211561
Rivalta di Torino TO 16 19887 231448
Varisella TO 16 810 232258
Piossasco TO 16 18589 250847
Bussoleno TO 17 6094 256941
Vallo Torinese TO 17 774 257715
Collegno TO 17 49905 307620
Druento TO 18 8622 316242
Usseglio TO 18 209 316451
Fiano TO 18 2695 319146
Orbassano TO 18 23188 342334
Grugliasco TO 18 37966 380300
Cantalupa TO 19 2553 382853
Traves TO 19 518 383371
Mattie TO 19 687 384058
Germagnano TO 19 1201 385259
Frossasco TO 19 2864 388123
Robassomero TO 20 3057 391180
Cafasse TO 20 3451 394631

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km W of Torino (890529 inhabitants)
29 Km W of Moncalieri (57294 inhabitants)
71 Km W of Asti (76202 inhabitants)
81 Km N of Cuneo (56081 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 3.5
ML-VAX 3.0 		1994-02-05
00:52:11		 45.109 7.356 5 2013-07-15
08:41:04		 Bollettino Sismico Italiano INGV 204839
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-02-05 00:52:11 ± 0.094
Latitude 45.1090 ± 0.0079
Longitude 7.3560 ± 0.0107
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 204839

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) 1215.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 41
Number of associated phases, regardless of their use for origin computation 102
Number of defining phases 102
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.7
Epicentral distance of station closest to the epicenter (degree) 0.00073
Epicentral distance of station farthest from the epicenter (degree) 0.05852
Number of stations at which the event was observed 75
Number of stations from which data was used for origin computation 75
Magnitudes information

Md:3.5

Field Value
Value 3.5
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 204839
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:12:49

ML:3.0

Field Value
Value 3.0
Uncertainty
Num. used stations 15
Type of magnitude ML
Reference to an origin 204839
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
--.GRR.Z. 1994-02-05T00:54:57.90 10.0 undecidable manual SN 303 6.4935 -0.36 0.3
--.FLN.Z. 1994-02-05T00:54:54.30 10.0 undecidable manual SN! 307 6.4602 -3.16 0
--.MFF.Z. 1994-02-05T00:54:30.00 10.0 undecidable manual SN! 288 5.4168 -2.61 0
--.VOY.Z. 1994-02-05T00:54:14.70 10.0 undecidable manual SN 76 4.6509 0.25 0.5
--.KBA.Z. 1994-02-05T00:54:13.70 10.0 undecidable manual SN 62 4.5843 0.96 0.4
--.TRI.Z. 1994-02-05T00:54:11.59 10.0 undecidable manual SN 80 4.5288 0.23 0.5
--.RJF.Z. 1994-02-05T00:54:02.50 10.0 undecidable manual SN 274 4.107 1.11 0.2
--.FVI.Z. 1994-02-05T00:54:00.70 10.0 undecidable manual SN 66 4.0515 0.07 0.5
--.CAF.Z. 1994-02-05T00:53:52.50 10.0 undecidable manual SN 268 3.7407 -0.01 0.5
--.TCF.Z. 1994-02-05T00:53:51.60 10.0 undecidable manual SN 289 3.774 -1.8 0.1
--.GRR.Z. 1994-02-05T00:53:48.40 10.0 undecidable manual PN 303 6.4935 0.54 0.8
--.FLN.Z. 1994-02-05T00:53:47.60 10.0 undecidable manual PN 307 6.4602 0.2 0.9
--.BGF.Z. 1994-02-05T00:53:45.60 10.0 undecidable manual SN 296 3.4521 -0.14 0.6
--.CTI.Z. 1994-02-05T00:53:38.28 10.0 undecidable manual SN 71 3.1413 -0.08 0.6
--.KHC.Z. 1994-02-05T00:53:38.00 10.0 undecidable manual PN 44 5.8275 -0.64 0.8
--.MFF.Z. 1994-02-05T00:53:34.10 10.0 undecidable manual PN 288 5.4168 1.04 0.5
--.HAU.Z. 1994-02-05T00:53:34.70 10.0 undecidable manual SN 346 2.9748 0.38 0.6
--.EPF.Z. 1994-02-05T00:53:32.40 10.0 undecidable manual PN 249 5.439 -0.91 0.6
--.LFF.Z. 1994-02-05T00:53:23.60 10.0 undecidable manual PN 270 4.6731 0.85 0.7
--.KBA.Z. 1994-02-05T00:53:22.90 10.0 positive manual PN 62 4.5843 1.32 0.8
--.VOY.Z. 1994-02-05T00:53:21.70 10.0 positive manual PN 76 4.6509 -0.87 1.4
--.LPO.Z. 1994-02-05T00:53:19.70 10.0 undecidable manual PN 266 4.3734 0.95 0.7
--.TRI.Z. 1994-02-05T00:53:19.56 10.0 undecidable manual PN 80 4.5288 -1.23 0.4
--.ASS.Z. 1994-02-05T00:53:18.41 10.0 positive manual PN 116 4.3068 0.62 1.9
--.ARV.Z. 1994-02-05T00:53:18.10 10.0 undecidable manual PN 109 4.2957 0.34 1.2
--.LSF.Z. 1994-02-05T00:53:17.40 10.0 undecidable manual PN 287 4.218 0.88 0.8
--.GE9.Z. 1994-02-05T00:53:16.20 10.0 undecidable manual PN 71 4.1958 -0.2 1.2
--.RJF.Z. 1994-02-05T00:53:16.30 10.0 undecidable manual PN 274 4.107 1.27 0.4
--.FVI.Z. 1994-02-05T00:53:15.49 10.0 positive manual PN 66 4.0515 1.27 0.9
--.FUR.Z. 1994-02-05T00:53:14.00 10.0 positive manual PN 39 4.0626 -0.41 2.3
--.RSM.Z. 1994-02-05T00:53:11.69 10.0 positive manual PN 106 3.8073 0.76 1.8
--.CAF.Z. 1994-02-05T00:53:10.80 10.0 undecidable manual PN 268 3.7407 0.9 0.8
--.TCF.Z. 1994-02-05T00:53:10.90 10.0 undecidable manual PN 289 3.774 0.48 1.1
--.CRE.Z. 1994-02-05T00:53:08.78 10.0 undecidable manual PN 112 3.5964 0.77 0.9
--.LMR.Z. 1994-02-05T00:53:08.00 10.0 undecidable manual SN 199 1.8648 -0.1 0.7
--.LRG.Z. 1994-02-05T00:53:08.10 10.0 undecidable manual SN 203 1.7982 1.77 0.1
--.MAF.Z. 1994-02-05T00:53:07.10 10.0 undecidable manual PN 290 3.5187 0.18 1.4
--.SFI.Z. 1994-02-05T00:53:06.95 10.0 undecidable manual PN 108 3.4188 1.47 0.4
--.MDI.Z. 1994-02-05T00:53:06.40 10.0 undecidable manual SN 67 1.776 0.5 0.6
--.BGF.Z. 1994-02-05T00:53:06.40 10.0 undecidable manual PN 296 3.4521 0.4 1.3
--.WLS.Z. 1994-02-05T00:53:04.40 10.0 undecidable manual PN 359 3.2967 0.18 1.4
--.SSF.Z. 1994-02-05T00:53:04.60 10.0 undecidable manual PN 307 3.2967 0.69 1.1
--.CDF.Z. 1994-02-05T00:53:04.00 10.0 undecidable manual PN 359 3.2967 0.14 1.4
--.LOR.Z. 1994-02-05T00:53:03.60 10.0 undecidable manual PN 312 3.2301 0.56 1.2
--.AVF.Z. 1994-02-05T00:53:03.60 10.0 undecidable manual PN 302 3.2412 0.46 1.3
--.FRF.Z. 1994-02-05T00:53:02.70 10.0 undecidable manual SN 198 1.6317 0.45 0.5
--.CTI.Z. 1994-02-05T00:53:01.73 10.0 undecidable manual PN 71 3.1413 0 1.5
--.ECH.Z. 1994-02-05T00:53:01.19 10.0 undecidable manual PN 357 3.0969 -0.01 1.5
--.LBF.Z. 1994-02-05T00:53:00.30 10.0 undecidable manual PN 309 2.997 0.57 1.2
--.HAU.Z. 1994-02-05T00:52:59.50 10.0 undecidable manual PN 346 2.9748 0.1 1.5
--.SMF.Z. 1994-02-05T00:52:58.80 10.0 undecidable manual PN 303 2.886 0.63 1.2
--.FEL.Z. 1994-02-05T00:52:57.20 10.0 undecidable manual PN 9 2.7972 0.2 1.6
--.SLE.Z. 1994-02-05T00:52:56.90 10.0 negative manual PN 15 2.7639 0.35 3
--.MOF.Z. 1994-02-05T00:52:56.55 10.0 undecidable manual PN 356 2.7417 0.33 1.5
--.BSF.Z. 1994-02-05T00:52:56.30 10.0 undecidable manual PN 352 2.7417 0.03 1.6
--.PGF.Z. 1994-02-05T00:52:55.19 10.0 undecidable manual PN! 154 2.8083 -2.05 0
--.ZC9.Z. 1994-02-05T00:52:55.84 10.0 undecidable manual PN 105 2.6751 0.51 1.4
--.PII.Z. 1994-02-05T00:52:55.16 10.0 undecidable manual PN 120 2.6418 0.21 1.6
--.VAI.Z. 1994-02-05T00:52:54.34 10.0 undecidable manual SN 52 1.2432 1.13 0.3
--.GU9.Z. 1994-02-05T00:52:53.44 10.0 negative manual PN 107 2.4087 1.74 0.5
--.OSS.Z. 1994-02-05T00:52:53.30 10.0 undecidable manual PN 49 2.4864 0.46 1.4
--.BDI.Z. 1994-02-05T00:52:52.82 10.0 undecidable manual PN 113 2.5197 -0.48 1.4
--.BBS.Z. 1994-02-05T00:52:51.68 10.0 undecidable manual PN 2 2.3532 0.79 1.1
--.SAL.Z. 1994-02-05T00:52:49.45 10.0 undecidable manual PN 76 2.2755 -0.4 1.5
--.CKI.Z. 1994-02-05T00:52:46.13 10.0 undecidable manual SG 136 0.9435 1.06 0.3
--.VDL.Z. 1994-02-05T00:52:45.90 10.0 negative manual PN 46 2.0091 -0.31 3
--.LMR.Z. 1994-02-05T00:52:44.30 10.0 undecidable manual PN 199 1.8648 0.04 1.6
--.LLS.Z. 1994-02-05T00:52:44.20 10.0 undecidable manual PN! 32 2.0757 -2.94 0
--.LRG.Z. 1994-02-05T00:52:43.80 10.0 undecidable manual PN 203 1.7982 0.56 1.3
--.PCP.Z. 1994-02-05T00:52:43.59 10.0 undecidable manual SG! 123 1.0101 -3.59 0
--.MDI.Z. 1994-02-05T00:52:41.72 10.0 undecidable manual PN 67 1.776 -1.27 0.6
--.BOB.Z. 1994-02-05T00:52:40.47 10.0 undecidable manual PN 102 1.5096 1.09 0.8
--.FRF.Z. 1994-02-05T00:52:40.90 10.0 undecidable manual PN 198 1.6317 0.02 1.6
--.TMA.Z. 1994-02-05T00:52:37.40 10.0 positive manual PN 46 1.443 -1.11 1.4
--.ORO.Z. 1994-02-05T00:52:36.54 10.0 undecidable manual SG 39 0.6771 0.16 0.6
--.VAI.Z. 1994-02-05T00:52:34.35 10.0 undecidable manual PN 52 1.2432 -1.31 0.5
--.IMI.Z. 1994-02-05T00:52:34.70 10.0 undecidable manual PN 161 1.2543 -1.72 0.3
--.ORX.Z. 1994-02-05T00:52:33.90 10.0 undecidable manual SG! 39 0.6882 -2.61 0
--.SBF.Z. 1994-02-05T00:52:33.11 10.0 undecidable manual PN! 177 1.2432 -2.53 0
--.DOI.Z. 1994-02-05T00:52:32.88 10.0 undecidable manual SG 187 0.5994 -1.26 0.3
--.EMS.Z. 1994-02-05T00:52:31.40 10.0 negative manual PG 342 0.999 -0.59 2.5
--.PZZ.Z. 1994-02-05T00:52:31.80 10.0 undecidable manual SG! 196 0.6327 -2.98 0
--.MMK.Z. 1994-02-05T00:52:31.10 10.0 positive manual PG 24 1.0323 -1.42 0.8
--.PCP.Z. 1994-02-05T00:52:31.53 10.0 undecidable manual PG 123 1.0101 -0.65 1.3
--.CKI.Z. 1994-02-05T00:52:30.30 10.0 positive manual PG 136 0.9435 -0.66 2.5
--.DIX.Z. 1994-02-05T00:52:30.60 10.0 negative manual PG 2 0.9657 -0.77 2.1
--.LPG.Z. 1994-02-05T00:52:29.70 10.0 undecidable manual SG! 312 0.5772 -3.35 0
--.RSL.Z. 1994-02-05T00:52:27.20 10.0 undecidable manual PG 318 0.777 -0.67 1.2
--.RRL.Z. 1994-02-05T00:52:26.50 10.0 undecidable manual SG! 245 0.444 -2.37 0
--.ENR.Z. 1994-02-05T00:52:26.69 10.0 positive manual PG! 176 0.8769 -3.02 0
--.ORO.Z. 1994-02-05T00:52:25.20 10.0 undecidable manual PG 39 0.6771 -0.75 1.1
--.LSD.Z. 1994-02-05T00:52:25.60 10.0 undecidable manual SG 338 0.3663 -0.69 0.5
--.ORX.Z. 1994-02-05T00:52:24.89 10.0 undecidable manual PG 39 0.6882 -1.13 0.7
--.LPL.Z. 1994-02-05T00:52:23.90 10.0 undecidable manual PG 313 0.5883 -0.54 1.3
--.PZZ.Z. 1994-02-05T00:52:23.12 10.0 undecidable manual PG 196 0.6327 -1.9 0.2
--.LPG.Z. 1994-02-05T00:52:23.40 10.0 undecidable manual PG 312 0.5772 -0.62 1.3
--.DOI.Z. 1994-02-05T00:52:22.76 10.0 positive manual PG 187 0.5994 -1.89 0.4
--.BNI.Z. 1994-02-05T00:52:21.31 10.0 positive manual PG 263 0.4773 -0.96 1.9
--.LSD.Z. 1994-02-05T00:52:20.37 10.0 undecidable manual PG 338 0.3663 0.25 1.6
--.RRL.Z. 1994-02-05T00:52:20.60 10.0 undecidable manual PG 245 0.444 -1.01 0.9
--.BHB.Z. 1994-02-05T00:52:17.96 10.0 undecidable manual PG 193 0.2775 -0.08 1.6
--.RSP.Z. 1994-02-05T00:52:15.84 10.0 undecidable manual PG! 301 0.0777 2.07 0
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