Earthquake with magnitude of ML 0.9 on date 25-04-2020 and time 04:24:13 (UTC) in region 5 km E Noasca (TO)

A magnitude ML 0.9 earthquake occured in region: 5 km E Noasca (TO), on

  • 25-04-2020 04:24:13 (UTC)
  • 25-04-2020 06:24:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 45.44, 7.37 at 10 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
Noasca TO 5 137 137
Locana TO 8 1498 1635
Chialamberto TO 9 345 1980
Groscavallo TO 10 204 2184
Ribordone TO 10 53 2237
Cantoira TO 11 564 2801
Ceresole Reale TO 11 156 2957
Sparone TO 14 1038 3995
Ceres TO 14 1065 5060
Ala di Stura TO 15 469 5529
Ronco Canavese TO 15 314 5843
Ingria TO 16 52 5895
Monastero di Lanzo TO 16 350 6245
Mezzenile TO 17 786 7031
Alpette TO 17 261 7292
Valprato Soana TO 17 108 7400
Pessinetto TO 17 606 8006
Coassolo Torinese TO 17 1547 9553
Pont-Canavese TO 18 3483 13036
Frassinetto TO 18 274 13310
Cogne AO 19 1417 14727
Canischio TO 19 277 15004
Corio TO 19 3277 18281
Balme TO 19 115 18396
Traves TO 19 518 18914
Forno Canavese TO 20 3446 22360

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km NW of Torino (890529 inhabitants)
55 Km NW of Moncalieri (57294 inhabitants)
89 Km NW of Asti (76202 inhabitants)
98 Km W of Novara (104380 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
Rev 100 ML 0.9 2020-04-25
04:24:13
45.44 7.37 10 2020-04-25
04:36:45
Sala Sismica INGV-Roma 78560771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-25 04:24:13 ± 0.24
Latitude 45.44 ± 0.01
Longitude 7.37 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78560771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1700
Semi-minor axis of confidence ellipse (meter) 1310
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 1700
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.27249
Epicentral distance of station farthest from the epicenter (degree) 0.63942
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 78560771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-25 04:36:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CH.DIX.HHZ. 2020-04-25T04:24:34.69 0.6 undecidable manual S 2 0.6394 50 -0.84 39
GU.BHB.HHZ. 2020-04-25T04:24:33.90 0.6 undecidable manual S 187 0.6097 50 -0.74 41
GU.SATI.HHZ. 2020-04-25T04:24:32.79 0.6 undecidable manual S 38 0.5558 50 -0.27 48
IV.MRGE.HHZ. 2020-04-25T04:24:27.98 0.6 undecidable manual S 327 0.3939 50 -0.28 50
CH.DIX.HHZ. 2020-04-25T04:24:26.86 0.6 negative manual P 2 0.6394 50 0.48 45
GU.BHB.HHZ. 2020-04-25T04:24:26.16 0.6 undecidable manual P 187 0.6097 50 0.29 47
GU.SATI.HHZ. 2020-04-25T04:24:25.59 0.6 undecidable manual P 38 0.5558 50 0.64 43
GU.TRAV.HHZ. 2020-04-25T04:24:24.10 0.6 undecidable manual S 75 0.2725 50 -0.56 47
IV.MRGE.HHZ. 2020-04-25T04:24:23.06 1.0 undecidable manual P 327 0.3939 50 0.88 20
GU.TRAV.HHZ. 2020-04-25T04:24:20.46 0.1 positive manual P 75 0.2725 50 0.36 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.TRAV.HHE. ML:1 4.315E-5 0.08 AML other m 2020-04-25T04:24:24.49
GU.TRAV.HHN. ML:1.3 0.00010355 0.24 AML other m 2020-04-25T04:24:24.62
GU.SATI.HHN. ML:0.7 1.228E-5 1.92 AML other m 2020-04-25T04:24:26.98
GU.BHB.HHN. ML:0.9 1.465E-5 0.82 AML other m 2020-04-25T04:24:26.45
IV.MRGE.HHN. ML:0.8 1.96E-5 0.64 AML other m 2020-04-25T04:24:28.99
IV.MRGE.HHE. ML:0.7 1.485E-5 1 AML other m 2020-04-25T04:24:28.75
GU.BHB.HHE. ML:0.9 1.345E-5 0.42 AML other m 2020-04-25T04:24:34.07
GU.SATI.HHE. ML:0.7 9.4E-6 0.8 AML other m 2020-04-25T04:24:35.57
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