Earthquake with magnitude of ML 1.4 on date 04-12-2021 and time 01:51:40 (UTC) in region Villanova Solaro (CN)

A magnitude ML 1.4 earthquake occured in region: Villanova Solaro (CN), on

  • 04-12-2021 01:51:40 (UTC)
  • 04-12-2021 02:51:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.7300, 7.5790 at 26 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Villanova Solaro CN 0 772 772
Ruffia CN 3 367 1139
Murello CN 3 966 2105
Torre San Giorgio CN 4 730 2835
Moretta CN 5 4136 6971
Scarnafigi CN 5 2162 9133
Monasterolo di Savigliano CN 6 1371 10504
Cavallerleone CN 7 644 11148
Cardè CN 8 1122 12270
Villafranca Piemonte TO 8 4729 16999
Polonghera CN 8 1160 18159
Faule CN 9 486 18645
Racconigi CN 9 10038 28683
Cavallermaggiore CN 9 5533 34216
Casalgrasso CN 11 1480 35696
Savigliano CN 11 21441 57137
Pancalieri TO 11 2038 59175
Saluzzo CN 11 16960 76135
Lagnasco CN 12 1453 77588
Lombriasco TO 13 1050 78638
Caramagna Piemonte CN 14 3034 81672
Vigone TO 14 5182 86854
Marene CN 14 3175 90029
Manta CN 15 3787 93816
Virle Piemonte TO 15 1206 95022
Osasio TO 16 936 95958
Cercenasco TO 16 1803 97761
Verzuolo CN 16 6459 104220
Castellar CN 16 295 104515
Sommariva del Bosco CN 17 6361 110876
Revello CN 17 4262 115138
Genola CN 17 2625 117763
Carmagnola TO 17 29079 146842
Cavour TO 17 5545 152387
Envie CN 17 2074 154461
Pagno CN 17 585 155046
Sanfrè CN 18 3040 158086
Vottignasco CN 18 537 158623
Castagnole Piemonte TO 19 2245 160868
Scalenghe TO 19 3339 164207
Macello TO 19 1229 165436
Costigliole Saluzzo CN 20 3375 168811
Brondello CN 20 290 169101
Garzigliana TO 20 572 169673

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km S of Moncalieri (57294 inhabitants)
37 Km N of Cuneo (56081 inhabitants)
39 Km S of Torino (890529 inhabitants)
53 Km W of Asti (76202 inhabitants)
84 Km W of Alessandria (93943 inhabitants)
86 Km NW 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
ML 1.4 2021-12-04
01:51:40
44.7303 7.5787 27 2022-03-30
13:04:34
Bollettino Sismico Italiano INGV 100568401
Reviewed
Rev100
ML 1.4 2021-12-04
01:51:40
44.7307 7.5627 29 2021-12-04
02:00:53
Sala Sismica INGV-Roma 98108731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-04 01:51:40 ± 0.14
Latitude 44.7303 ± 0.0054
Longitude 7.5787 ± 0.0101
Depth (km) 27 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100568401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 756
Semi-minor axis of confidence ellipse (meter) 189
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 81
Circular confidence region, given by single value of horizontal uncertainty (meter) 760.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.79320
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 98108731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-04 02:00:53

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 100568401
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-03 15:06:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.APEC.HHZ. 2021-12-04T01:53:37.63 3.0 undecidable manual Sg 20.200001 0
ST.PANI.EHZ. 2021-12-04T01:53:13.28 3.0 undecidable manual Sg 13.97 0
SI.MOSI.HHZ. 2021-12-04T01:53:00.99 3.0 undecidable manual Sn 5.56 0
IV.PP3.EHZ. 2021-12-04T01:52:48.45 3.0 positive manual Pn 1.82 0
IV.AGLI.HHZ. 2021-12-04T01:52:37.83 3.0 negative manual Pn 1.91 0
IV.ZEN8.EHZ. 2021-12-04T01:52:27.28 3.0 undecidable manual Pg 10.4 0
GU.MGRO.HHN. 2021-12-04T01:52:04.27 0.6 undecidable manual S 167 0.7069 103 0.06 48
MN.BNI.HHN. 2021-12-04T01:52:04.05 0.6 undecidable manual S 297 0.7141 103 -0.37 46
FR.SAOF.HHE.00 2021-12-04T01:52:04.47 0.6 undecidable manual S 181 0.7437 102 -0.82 38
IV.QLNO.HHE. 2021-12-04T01:52:02.74 0.6 undecidable manual S 126 0.6808 104 -0.72 38
GU.ENR.HHZ. 2021-12-04T01:51:58.45 0.6 undecidable manual S 193 0.5135 109 -0.25 48
GU.RSP.HHZ. 2021-12-04T01:51:56.61 1.0 undecidable manual S 332 0.4730 111 -0.96 20
IV.MONC.HHZ. 2021-12-04T01:51:56.53 0.6 undecidable manual S 36 0.4227 113 0.34 48
GU.PZZ.HHZ. 2021-12-04T01:51:55.41 1.0 undecidable manual S 236 0.3984 115 -0.11 26
FR.SAOF.HHE.00 2021-12-04T01:51:54.54 0.3 undecidable manual P 181 0.7437 102 -0.2 69
GU.MGRO.HHN. 2021-12-04T01:51:54.17 0.3 undecidable manual P 167 0.7069 103 0.05 72
GU.RORO.HHE. 2021-12-04T01:51:54.49 1.0 undecidable manual P 150 0.7087 103 0.33 23
GU.LSD.HHN. 2021-12-04T01:51:54.54 0.6 undecidable manual P 337 0.7932 102 -1.03 35
GU.CANO.HHE. 2021-12-04T01:51:54.64 0.6 undecidable manual P 138 0.7024 103 0.59 43
MN.BNI.HHN. 2021-12-04T01:51:54.53 0.1 undecidable manual P 297 0.7141 103 0.29 89
GU.PCP.HHZ. 2021-12-04T01:51:53.93 0.3 undecidable manual P 105 0.7132 103 -0.29 67
IV.QLNO.HHE. 2021-12-04T01:51:53.83 0.3 undecidable manual P 126 0.6808 104 0.14 72
GU.TRAV.HHZ. 2021-12-04T01:51:53.87 1.0 undecidable manual P 9 0.7905 102 -1.65 12
GU.BHB.HHZ. 2021-12-04T01:51:52.11 0.6 undecidable manual S 295 0.2473 129 0.41 47
GU.RRL.HHZ. 2021-12-04T01:51:52.60 0.3 undecidable manual P 289 0.5909 106 0.4 67
GU.ROTM.HHZ. 2021-12-04T01:51:51.80 0.3 undecidable manual P 77 0.5612 107 0.08 74
GU.ENR.HHZ. 2021-12-04T01:51:51.00 0.1 negative manual P 193 0.5135 109 0.06 99
GU.GBOS.HHZ. 2021-12-04T01:51:51.46 0.3 undecidable manual P 159 0.5225 108 0.37 70
GU.STV.HHZ. 2021-12-04T01:51:50.85 0.1 negative manual P 200 0.5171 109 -0.15 98
IV.MONC.HHZ. 2021-12-04T01:51:49.67 0.1 undecidable manual P 36 0.4227 113 0.18 99
GU.RSP.HHZ. 2021-12-04T01:51:49.80 0.3 undecidable manual P 332 0.4730 111 -0.49 70
GU.PZZ.HHZ. 2021-12-04T01:51:49.19 0.1 undecidable manual P 236 0.3984 115 0.09 100
GU.BHB.HHZ. 2021-12-04T01:51:47.30 0.1 negative manual P 295 0.2473 129 0.4 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.RSP.HNE. ML:1.1 0.000027371625000000002 1.48 AML other m 2021-12-04T01:51:51.95
GU.ENR.HHN. ML:1.6 0.000073378345 0.0608 AML other m 2021-12-04T01:51:51.26
GU.BHB.HHN. ML:1.6 0.00015923604999999998 0.12 AML other m 2021-12-04T01:51:52.37
GU.BHB.HNN. ML:1.7 0.0001822305 0.1312 AML other m 2021-12-04T01:51:52.37
GU.BHB.HHE. ML:1.7 0.00019491345 0.2208 AML other m 2021-12-04T01:51:52.44
GU.BHB.HNE. ML:1.7 0.00017703905 0.2096 AML other m 2021-12-04T01:51:52.34
IV.MONC.HHE. ML:1.6 0.00008648213499999999 0.16 AML other m 2021-12-04T01:51:57.46
GU.RSP.HNN. ML:1.1 0.000026261919999999998 0.2496 AML other m 2021-12-04T01:51:57.85
IV.MONC.HHN. ML:1.5 0.00007628081000000001 0.2 AML other m 2021-12-04T01:51:57.85
GU.PZZ.HHN. ML:1.2 0.000043865574999999994 0.32 AML other m 2021-12-04T01:51:58.27
GU.STV.HHN. ML:1.1 0.00002300872 0.1408 AML other m 2021-12-04T01:51:58.21
GU.RSP.HHN. ML:1.1 0.000028010525 0.2208 AML other m 2021-12-04T01:51:58.24
GU.RSP.HHE. ML:1.1 0.000031065315 0.12 AML other m 2021-12-04T01:51:58.38
GU.STV.HHE. ML:1.2 0.000029628229999999997 0.1616 AML other m 2021-12-04T01:51:58.45
GU.ENR.HHE. ML:1.7 0.00010133855 0.1984 AML other m 2021-12-04T01:51:58.65
GU.GBOS.HHE. ML:1.4 0.00004324367 0.1408 AML other m 2021-12-04T01:51:59.14
GU.GBOS.HHN. ML:1.1 0.000023168965 0.16 AML other m 2021-12-04T01:52:00.16
GU.PZZ.HHE. ML:1.2 0.00003841172 0.28 AML other m 2021-12-04T01:52:00.69
GU.ROTM.HHN. ML:2.0 0.00017584225 0.2608 AML other m 2021-12-04T01:52:00.71
GU.ROTM.HHE. ML:2.1 0.0002071295 1.8 AML other m 2021-12-04T01:52:00.04
GU.PCP.HHE. ML:1.2 0.000018379155000000002 0.24 AML other m 2021-12-04T01:52:03.74
GU.PCP.HHN. ML:1.2 0.000020952184999999998 0.2192 AML other m 2021-12-04T01:52:03.92
GU.TRAV.HHN. ML:1.1 0.000015974435 0.1008 AML other m 2021-12-04T01:52:04.32
GU.TRAV.HHE. ML:1.2 0.00001952802 0.2192 AML other m 2021-12-04T01:52:06.20
GU.RRL.HHN. ML:1.0 0.0000162530595 0.84 AML other m 2021-12-04T01:52:18.58
GU.RRL.HHE. ML:1.5 0.00004850133 1.4 AML other m 2021-12-04T01:52:20.83
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, http://terremoti.ingv.it/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