Earthquake with magnitude of ML 1.7 on date 18-08-2021 and time 21:32:36 (UTC) in region 2 km E Vigone (TO)

A magnitude ML 1.7 earthquake occured in region: 2 km E Vigone (TO), on

  • 18-08-2021 21:32:36 (UTC)
  • 18-08-2021 23:32:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.849, 7.516 at 30 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Vigone TO 2 5182 5182
Cercenasco TO 2 1803 6985
Scalenghe TO 5 3339 10324
Virle Piemonte TO 5 1206 11530
Pancalieri TO 6 2038 13568
Castagnole Piemonte TO 7 2245 15813
Faule CN 7 486 16299
Villafranca Piemonte TO 8 4729 21028
Osasio TO 8 936 21964
Airasca TO 8 3794 25758
Polonghera CN 8 1160 26918
Buriasco TO 9 1410 28328
Macello TO 9 1229 29557
Casalgrasso CN 9 1480 31037
Moretta CN 10 4136 35173
Lombriasco TO 10 1050 36223
None TO 10 8005 44228
Piscina TO 11 3388 47616
Garzigliana TO 11 572 48188
Volvera TO 12 8840 57028
Cardè CN 12 1122 58150
Piobesi Torinese TO 12 3763 61913
Torre San Giorgio CN 13 730 62643
Murello CN 13 966 63609
Cavour TO 13 5545 69154
Osasco TO 14 1141 70295
Villanova Solaro CN 14 772 71067
Candiolo TO 14 5669 76736
Carignano TO 14 9261 85997
Vinovo TO 15 14887 100884
Pinerolo TO 15 35808 136692
Racconigi CN 16 10038 146730
Campiglione Fenile TO 16 1390 148120
Carmagnola TO 16 29079 177199
Frossasco TO 16 2864 180063
Piossasco TO 16 18589 198652
Cavallerleone CN 17 644 199296
Roletto TO 17 2009 201305
Bricherasio TO 17 4616 205921
La Loggia TO 17 8874 214795
Ruffia CN 17 367 215162
San Pietro Val Lemina TO 17 1448 216610
San Secondo di Pinerolo TO 17 3575 220185
Cantalupa TO 18 2553 222738
Orbassano TO 18 23188 245926
Bagnolo Piemonte CN 19 6024 251950
Cumiana TO 19 7826 259776
Bibiana TO 19 3442 263218
Scarnafigi CN 19 2162 265380
Caramagna Piemonte CN 19 3034 268414
Nichelino TO 19 48123 316537
Prarostino TO 19 1273 317810
Bruino TO 20 8639 326449
Monasterolo di Savigliano CN 20 1371 327820
Porte TO 20 1083 328903
Villastellone TO 20 4779 333682
Beinasco TO 20 18159 351841

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km SW of Moncalieri (57294 inhabitants)
28 Km SW of Torino (890529 inhabitants)
51 Km N of Cuneo (56081 inhabitants)
55 Km W of Asti (76202 inhabitants)
87 Km W of Alessandria (93943 inhabitants)
97 Km NW of Savona (61345 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.7 2021-08-18
21:32:36
44.849 7.5158 30 2021-08-18
21:47:47
Sala Sismica INGV-Roma 94346021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-18 21:32:36 ± 0.1
Latitude 44.8490 ± 0.0081
Longitude 7.5158 ± 0.0152
Depth (km) 30 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94346021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1023
Semi-minor axis of confidence ellipse (meter) 740
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 258
Circular confidence region, given by single value of horizontal uncertainty (meter) 1020
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.51536
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 25
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 94346021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-18 21:47:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.STAL.HNZ. 2021-08-18T21:34:22.17 3.0 undecidable manual Sn 1.5 0
IV.FIAM.HHZ. 2021-08-18T21:34:03.77 3.0 undecidable manual Pg 16.6 0
IV.INTR.HHZ. 2021-08-18T21:33:56.90 3.0 negative manual Pn 1.07 0
IV.COR1.EHZ. 2021-08-18T21:33:56.53 3.0 undecidable manual Pg 18.84 0
IV.MBAL.EHZ. 2021-08-18T21:33:28.48 3.0 positive manual Pg 12.83 0
IV.ZEN8.EHZ. 2021-08-18T21:33:21.10 3.0 undecidable manual Pg 6.88 0
IV.MILN.HHZ. 2021-08-18T21:33:04.36 3.0 undecidable manual Pg 4.33 0
CH.MUGIO.HHZ. 2021-08-18T21:33:02.28 0.3 undecidable manual P 44 1.5154 54 0.28 62
IV.VARE.HHE. 2021-08-18T21:32:58.98 0.3 undecidable manual P 40 1.3463 54 -0.69 60
CH.DIX.HHZ. 2021-08-18T21:32:57.91 0.3 undecidable manual P 357 1.233 54 -0.19 71
CH.MMK.HHE. 2021-08-18T21:32:57.58 0.3 undecidable manual P 15 1.2411 54 -0.63 63
GU.STV.HHZ. 2021-08-18T21:32:56.32 0.6 undecidable manual S 193 0.6187 109 -1.48 32
GU.RRL.HHZ. 2021-08-18T21:32:55.57 0.6 undecidable manual S 278 0.5189 112 0.53 51
GU.BURY.HHZ. 2021-08-18T21:32:55.88 0.1 undecidable manual P 178 1.0666 54 0.09 100
GU.IMI.HHZ. 2021-08-18T21:32:54.73 0.1 undecidable manual P 164 0.9758 54 0.18 100
IV.MRGE.HHZ. 2021-08-18T21:32:54.66 0.6 undecidable manual P 341 0.974 54 0.13 50
GU.PZZ.HHZ. 2021-08-18T21:32:52.03 0.6 undecidable manual S 220 0.4452 116 -1.01 43
FR.SAOF.HHZ.00 2021-08-18T21:32:52.37 0.3 undecidable manual P 178 0.8624 103 -0.33 75
GU.MGRO.HHZ. 2021-08-18T21:32:52.23 0.3 undecidable manual P 165 0.8328 103 0.04 80
GU.RORO.HHZ. 2021-08-18T21:32:52.60 0.1 undecidable manual P 152 0.8346 103 0.38 100
GU.CANO.HHZ. 2021-08-18T21:32:52.30 0.3 undecidable manual P 141 0.822 104 0.29 77
IV.QLNO.HHZ. 2021-08-18T21:32:51.68 0.3 undecidable manual P 131 0.7896 104 0.2 79
GU.PCP.HHE. 2021-08-18T21:32:51.76 0.3 undecidable manual P 112 0.7932 104 0.22 78
IV.MONC.HHZ. 2021-08-18T21:32:51.71 0.6 undecidable manual S 52 0.3678 121 0.68 51
GU.RNCA.HHE. 2021-08-18T21:32:50.84 0.3 undecidable manual P 1.0882 -5.25 0
GU.LSD.HHZ. 2021-08-18T21:32:49.39 0.3 undecidable manual P 336 0.6673 107 -0.06 82
GU.GBOS.HHZ. 2021-08-18T21:32:49.42 0.3 undecidable manual P 159 0.6493 108 0.25 80
GU.RSP.HHZ. 2021-08-18T21:32:49.79 0.6 undecidable manual S 329 0.348 123 -0.74 48
MN.BNI.HHZ. 2021-08-18T21:32:49.77 0.3 undecidable manual P 289 0.6268 108 0.98 62
GU.ENR.HHZ. 2021-08-18T21:32:48.48 0.3 undecidable manual P 186 0.6232 108 -0.26 80
GU.TRAV.HHZ. 2021-08-18T21:32:48.42 0.3 undecidable manual P 14 0.6826 107 -1.28 52
GU.STV.HHZ. 2021-08-18T21:32:48.26 0.3 undecidable manual P 193 0.6187 109 -0.41 78
GU.RRL.HHZ. 2021-08-18T21:32:47.85 0.3 undecidable manual P 278 0.5189 112 0.78 69
GU.BHB.HHZ. 2021-08-18T21:32:46.59 0.6 undecidable manual S 266 0.1799 143 -0.27 58
IV.MONC.HHZ. 2021-08-18T21:32:45.06 0.3 undecidable manual P 52 0.3678 121 0.31 84
GU.PZZ.HHZ. 2021-08-18T21:32:45.81 0.3 undecidable manual P 220 0.4452 116 -0.1 86
GU.RSP.HHZ. 2021-08-18T21:32:44.45 0.3 undecidable manual P 329 0.348 123 -0.01 89
GU.BHB.HHZ. 2021-08-18T21:32:42.59 0.3 undecidable manual P 266 0.1799 143 0.25 88
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.BHB.HNN. ML:1.8 0.00027511615 0.128 AML other m 2021-08-18T21:32:46.85
GU.BHB.HHN. ML:1.8 0.00026551855 0.128 AML other m 2021-08-18T21:32:46.85
GU.BHB.HNE. ML:1.8 0.00024589005 0.192 AML other m 2021-08-18T21:32:46.81
GU.BHB.HHE. ML:1.8 0.0002763226 0.2048 AML other m 2021-08-18T21:32:46.91
GU.RSP.HNN. ML:1.6 0.0001176625 0.1408 AML other m 2021-08-18T21:32:50.70
GU.RSP.HHN. ML:1.7 0.0001436947 0.1408 AML other m 2021-08-18T21:32:50.70
GU.RSP.HHE. ML:1.6 0.000112606835 0.1152 AML other m 2021-08-18T21:32:50.36
GU.RSP.HNE. ML:1.5 9.060742E-5 0.1152 AML other m 2021-08-18T21:32:50.36
GU.PZZ.HHN. ML:0 0.0001531349 0.1664 AML other m 2021-08-18T21:32:53.66
GU.PZZ.HHE. ML:0 0.000245871 0.2304 AML other m 2021-08-18T21:32:53.74
IV.MONC.HHE. ML:2.1 0.000332 0.22 AML other m 2021-08-18T21:32:53.98
GU.RRL.HHN. ML:1.4 4.2775295E-5 0.2432 AML other m 2021-08-18T21:32:58.22
GU.STV.HHE. ML:1.6 5.35505E-5 0.1408 AML other m 2021-08-18T21:32:56.42
IV.MONC.HHN. ML:2.1 0.00030387565 0.2816 AML other m 2021-08-18T21:32:56.65
GU.ENR.HHE. ML:2.2 0.000256 0.14 AML other m 2021-08-18T21:32:57.28
GU.RRL.HHE. ML:1.3 4.0301395E-5 0.1792 AML other m 2021-08-18T21:32:56.36
GU.STV.HHN. ML:1.2 2.678584E-5 0.32 AML other m 2021-08-18T21:32:56.21
GU.LSD.HHE. ML:1.9 0.00011215997 0.32 AML other m 2021-08-18T21:32:58.95
GU.GBOS.HHE. ML:2 0.00013815915 0.2816 AML other m 2021-08-18T21:32:58.67
GU.LSD.HHN. ML:1.8 9.2523005E-5 0.1664 AML other m 2021-08-18T21:32:58.38
MN.BNI.HHN. ML:1.2 2.6115655E-5 0.2048 AML other m 2021-08-18T21:32:59.00
GU.GBOS.HHN. ML:1.8 9.930935E-5 0.32 AML other m 2021-08-18T21:32:58.33
MN.BNI.HHE. ML:1.1 2.1611465E-5 0.1664 AML other m 2021-08-18T21:32:58.92
GU.CANO.HHE. ML:2.1 0.0001394006 0.32 AML other m 2021-08-18T21:33:03.70
FR.SAOF.HHE.00 ML:1.5 2.8249245E-5 0.2432 AML other m 2021-08-18T21:33:03.62
IV.QLNO.HHE. ML:1.6 4.55313E-5 0.1536 AML other m 2021-08-18T21:33:03.43
IV.QLNO.HHN. ML:1.5 3.694521E-5 0.1792 AML other m 2021-08-18T21:33:04.64
GU.CANO.HHN. ML:2.3 0.0001995 0.28 AML other m 2021-08-18T21:33:05.33
FR.SAOF.HHN.00 ML:1.5 2.9644648E-5 0.2432 AML other m 2021-08-18T21:33:07.24
GU.MGRO.HHN. ML:1.8 6.535E-5 0.16 AML other m 2021-08-18T21:33:05.50
GU.IMI.HHE. ML:1.8 4.7876795E-5 0.2816 AML other m 2021-08-18T21:33:08.41
IV.MRGE.HHE. ML:1.5 2.735915E-5 0.3712 AML other m 2021-08-18T21:33:08.75
IV.MRGE.HHN. ML:1.7 3.975E-5 1.46 AML other m 2021-08-18T21:33:09.91
GU.MGRO.HHE. ML:1.8 6.495E-5 0.48 AML other m 2021-08-18T21:33:09.43
GU.IMI.HHN. ML:1.6 3.72E-5 0.22 AML other m 2021-08-18T21:33:12.58
CH.DIX.HHE. ML:2.3 0.0001119 1.8 AML other m 2021-08-18T21:33:14.03
CH.DIX.HHN. ML:2.2 8.395E-5 0.24 AML other m 2021-08-18T21:33:15.56
MN.BNI.HNE. ML:1.2 2.6995605E-5 0.704 AML other m 2021-08-18T21:32:56.10
MN.BNI.HNN. ML:1.2 2.6789135E-5 0.2048 AML other m 2021-08-18T21:32:58.84
GU.MGRO.HNN. ML:2 0.00010621416 0.6016 AML other m 2021-08-18T21:33:07.35
GU.RORO.HHN. ML:1.7 5.331465E-5 0.1792 AML other m 2021-08-18T21:33:04.52
GU.BURY.HHN. ML:1.6 3.119735E-5 0.1024 AML other m 2021-08-18T21:33:12.36
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