Earthquake with magnitude of ML 1.1 on date 05-08-2020 and time 20:44:20 (Italy) in region 2 km NE Osasio (TO)

A magnitude ML 1.1 earthquake occured in region: 2 km NE Osasio (TO), on

  • 05-08-2020 18:44:20 (UTC)
  • 05-08-2020 20:44:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.88, 7.62 at 29 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
Osasio TO 2 936 936
Virle Piemonte TO 4 1206 2142
Castagnole Piemonte TO 4 2245 4387
Lombriasco TO 5 1050 5437
Carignano TO 5 9261 14698
Piobesi Torinese TO 5 3763 18461
Pancalieri TO 6 2038 20499
Vinovo TO 7 14887 35386
Casalgrasso CN 7 1480 36866
None TO 8 8005 44871
Candiolo TO 9 5669 50540
La Loggia TO 9 8874 59414
Polonghera CN 9 1160 60574
Carmagnola TO 9 29079 89653
Faule CN 9 486 90139
Scalenghe TO 9 3339 93478
Cercenasco TO 9 1803 95281
Vigone TO 11 5182 100463
Airasca TO 11 3794 104257
Villastellone TO 11 4779 109036
Volvera TO 11 8840 117876
Nichelino TO 13 48123 165999
Racconigi CN 14 10038 176037
Moncalieri TO 14 57294 233331
Santena TO 14 10830 244161
Villafranca Piemonte TO 14 4729 248890
Murello CN 15 966 249856
Moretta CN 15 4136 253992
Trofarello TO 15 11010 265002
Orbassano TO 15 23188 288190
Caramagna Piemonte CN 15 3034 291224
Piscina TO 15 3388 294612
Beinasco TO 16 18159 312771
Buriasco TO 16 1410 314181
Cambiano TO 16 6107 320288
Cavallerleone CN 17 644 320932
Piossasco TO 17 18589 339521
Macello TO 17 1229 340750
Villanova Solaro CN 18 772 341522
Torre San Giorgio CN 18 730 342252
Rivalta di Torino TO 18 19887 362139
Sommariva del Bosco CN 18 6361 368500
Pecetto Torinese TO 18 3995 372495
Poirino TO 19 10553 383048
Ceresole Alba CN 19 2090 385138
Cardè CN 19 1122 386260
Bruino TO 19 8639 394899
Garzigliana TO 20 572 395471
Ruffia CN 20 367 395838
Grugliasco TO 20 37966 433804

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km SW of Moncalieri (57294 inhabitants)
22 Km S of Torino (890529 inhabitants)
47 Km W of Asti (76202 inhabitants)
55 Km N of Cuneo (56081 inhabitants)
79 Km W of Alessandria (93943 inhabitants)
94 Km NW of Savona (61345 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.1 2020-08-05
18:44:20
44.89 7.62 29 2020-08-05
19:51:29
Sala Sismica INGV-Roma 81684121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-05 18:44:20 ± 0.23
Latitude 44.89 ± 0.01
Longitude 7.62 ± 0.02
Depth (km) 29 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81684121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1378
Semi-minor axis of confidence ellipse (meter) 1086
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 1380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 11
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
Epicentral distance of station farthest from the epicenter (degree) 0.71676
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 81684121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-05 19:51:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FREG.EHZ. 2020-08-05T18:46:17.53 3.0 undecidable manual Sg 13.53 0
IV.ARVD.HHZ. 2020-08-05T18:46:08.92 3.0 undecidable manual Sn -9.55 0
IV.PESA.HHZ. 2020-08-05T18:46:05.00 3.0 undecidable manual Sn -8.56 0
IV.CSFT.HHZ. 2020-08-05T18:45:57.34 3.0 negative manual Pn 1.88 0
IV.RIBO.EHZ.01 2020-08-05T18:45:47.61 3.0 undecidable manual Sn -6.45 0
IV.RMP.HHZ. 2020-08-05T18:45:43.52 3.0 positive manual Pg 8.13 0
IV.SBPO.HNZ. 2020-08-05T18:45:38.70 3.0 undecidable manual Sg 1.9 0
IV.MMUR.HNZ. 2020-08-05T18:45:21.72 3.0 negative manual Pn -5.31 0
IT.FIE.HGZ. 2020-08-05T18:45:17.81 3.0 positive manual Pg 8.47 0
IV.RIBO.EHZ.01 2020-08-05T18:45:11.78 3.0 negative manual Pn -0.75 0
GU.GSCL.HHZ. 2020-08-05T18:45:05.90 3.0 negative manual Pg 5.4 0
GU.LSD.HHZ. 2020-08-05T18:44:42.56 0.3 undecidable manual S 330 0.6664 106 -0.36 66
GU.RRL.HHE. 2020-08-05T18:44:40.44 0.3 undecidable manual S 274 0.5855 108 -0.18 70
GU.PZZ.HHZ. 2020-08-05T18:44:39.20 0.6 undecidable manual S 223 0.5189 111 0.44 45
GU.LSD.HHZ. 2020-08-05T18:44:33.58 0.3 undecidable manual P 330 0.6664 106 0.32 67
GU.GBOS.HHE. 2020-08-05T18:44:33.10 0.3 undecidable manual P 166 0.6628 106 -0.1 70
GU.TRAV.HHZ. 2020-08-05T18:44:33.02 0.6 undecidable manual P 8 0.634 107 0.3 45
GU.CIRO.HHE. 2020-08-05T18:44:33.93 0.6 undecidable manual P 357 0.7168 105 -0.16 45
GU.ENR.HHZ. 2020-08-05T18:44:32.50 3.0 undecidable manual P -1.32 0
GU.RRL.HHE. 2020-08-05T18:44:32.23 0.1 undecidable manual P 274 0.5855 108 0.3 91
GU.BHB.HHZ. 2020-08-05T18:44:31.91 0.6 undecidable manual S 259 0.2545 131 -0.05 51
GU.PZZ.HHZ. 2020-08-05T18:44:30.17 0.3 undecidable manual P 223 0.5189 111 -0.69 61
GU.BHB.HHZ. 2020-08-05T18:44:27.08 0.1 negative manual P 259 0.2545 131 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.BHB.HHE. ML:1 3.435E-5 0.58 AML other m 2020-08-05T18:44:31.92
GU.BHB.HHN. ML:1 3.47E-5 0.8 AML other m 2020-08-05T18:44:32.79
IV.MONC.HHE. ML:1.4 8.675E-5 0.16 AML other m 2020-08-05T18:44:35.93
IV.MONC.HHN. ML:1.4 8.73E-5 1.1 AML other m 2020-08-05T18:44:36.56
GU.PZZ.HHN. ML:1 2.15E-5 0.3 AML other m 2020-08-05T18:44:39.80
GU.PZZ.HHE. ML:1 2.09E-5 0.22 AML other m 2020-08-05T18:44:42.99
GU.TRAV.HHE. ML:1 1.5965E-5 1.58 AML other m 2020-08-05T18:44:43.81
GU.TRAV.HHN. ML:1 1.3555E-5 1.58 AML other m 2020-08-05T18:44:44.08
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download