Earthquake with magnitude of ML 0.5 on date 15-08-2022 and time 08:29:21 (Italy) in region 2 km NE Massello (TO)

A magnitude ML 0.5 earthquake occured in region: 2 km NE Massello (TO), on

  • 15-08-2022 06:29:21 (UTC)
  • 15-08-2022 08:29:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.9720, 7.0750 at 11 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
Massello TO 2 51 51
Salza di Pinerolo TO 4 75 126
Perrero TO 5 659 785
Roure TO 6 848 1633
Fenestrelle TO 7 544 2177
Pomaretto TO 9 1009 3186
Prali TO 9 246 3432
Usseaux TO 9 186 3618
Perosa Argentina TO 10 3285 6903
Pragelato TO 12 776 7679
Inverso Pinasca TO 12 730 8409
Pinasca TO 13 3051 11460
Pramollo TO 13 258 11718
Villar Perosa TO 15 4092 15810
San Germano Chisone TO 15 1854 17664
Sestriere TO 16 929 18593
Meana di Susa TO 17 826 19419
Mattie TO 17 687 20106
Sauze di Cesana TO 17 244 20350
Gravere TO 18 692 21042
Chiomonte TO 18 916 21958
Porte TO 18 1083 23041
Exilles TO 18 273 23314
Sauze d'Oulx TO 18 1109 24423
Susa TO 18 6466 30889
Angrogna TO 19 889 31778
Bobbio Pellice TO 19 563 32341
Salbertrand TO 19 596 32937
Mompantero TO 19 659 33596
Villar Pellice TO 19 1076 34672
San Giorio di Susa TO 19 1024 35696
Giaglione TO 19 631 36327
Prarostino TO 19 1273 37600
Bussoleno TO 19 6094 43694
Villar Focchiardo TO 20 2042 45736
Coazze TO 20 3287 49023

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km W of Moncalieri (57294 inhabitants)
49 Km W of Torino (890529 inhabitants)
75 Km NW of Cuneo (56081 inhabitants)
89 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
Reviewed
Rev100
ML 0.5 2022-08-15
06:29:21
44.9723 7.0747 11 2022-08-15
06:35:24
Sala Sismica INGV-Roma 108556911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-08-15 06:29:21 ± 0.2
Latitude 44.9723 ± 0.0171
Longitude 7.0747 ± 0.0064
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 108556911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1940
Semi-minor axis of confidence ellipse (meter) 500
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 1
Circular confidence region, given by single value of horizontal uncertainty (meter) 1940.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.53
Epicentral distance of station closest to the epicenter (degree) 0.19066
Epicentral distance of station farthest from the epicenter (degree) 0.48833
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 108556911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-08-15 06:35:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.LSD.HHZ. 2022-08-15T06:29:37.91 0.3 undecidable manual S 5 0.4883 90 -0.87 60
GU.PZZ.HHZ. 2022-08-15T06:29:37.42 0.6 undecidable manual S 176 0.4667 90 -0.7 43
GU.LSD.HHZ. 2022-08-15T06:29:32.11 0.3 undecidable manual P 5 0.4883 90 0.49 67
MN.BNI.HHZ. 2022-08-15T06:29:32.18 0.3 undecidable manual S 286 0.2914 90 -0.75 62
GU.PZZ.HHZ. 2022-08-15T06:29:31.74 0.6 undecidable manual P 176 0.4667 90 0.5 45
GU.RRL.HHZ. 2022-08-15T06:29:30.21 0.1 undecidable manual S 256 0.2077 90 -0.24 100
GU.RSP.HHZ. 2022-08-15T06:29:30.27 0.3 undecidable manual S 37 0.2212 90 -0.58 72
GU.BHB.HHZ. 2022-08-15T06:29:29.49 0.1 undecidable manual S 136 0.1907 90 -0.47 99
MN.BNI.HHZ. 2022-08-15T06:29:28.55 0.6 undecidable manual P 286 0.2914 90 0.31 49
GU.BHB.HHZ. 2022-08-15T06:29:27.00 0.1 undecidable manual P 136 0.1907 90 0.47 94
GU.RRL.HHZ. 2022-08-15T06:29:27.31 0.1 undecidable manual P 256 0.2077 90 0.5 96
GU.RSP.HHZ. 2022-08-15T06:29:27.47 0.1 undecidable manual P 37 0.2212 90 0.43 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.BHB.HHN. ML:0.6 0.00002805 0.48 AML other m 2022-08-15T06:29:29.73
GU.RSP.HHE. ML:0.5 0.000022100000000000002 0.28 AML other m 2022-08-15T06:29:30.89
GU.BHB.HHE. ML:0.3 0.000016 0.1 AML other m 2022-08-15T06:29:30.87
GU.RSP.HHN. ML:0.5 0.000020450000000000002 1.3 AML other m 2022-08-15T06:29:31.11
GU.PZZ.HHE. ML:1.0 0.0000241 1.08 AML other m 2022-08-15T06:29:38.23
GU.PZZ.HHN. ML:0.9 0.0000181 0.18 AML other m 2022-08-15T06:29:39.03
GU.RRL.HHE. ML:0.5 0.000021344 0.2176 AML other m 2022-08-15T06:29:30.34
MN.BNI.HHE. ML:0.1 0.0000032439790000000003 0.1184 AML other m 2022-08-15T06:29:34.68
GU.LSD.HHE. ML:0.3 0.0000065346145 0.16 AML other m 2022-08-15T06:29:38.47
GU.LSD.HHN. ML:0.3 0.000003952808000000001 0.1216 AML other m 2022-08-15T06:29:40.01
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