Earthquake with magnitude of ML 1.4 on date 13-02-2020 and time 22:49:51 (Italy) in region 2 km NW Castellar (CN)

A magnitude ML 1.4 earthquake occured in region: 2 km NW Castellar (CN), on

  • 13-02-2020 21:49:51 (UTC)
  • 13-02-2020 22:49:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.64, 7.42 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
Castellar CN 2 295 295
Pagno CN 3 585 880
Revello CN 3 4262 5142
Brondello CN 4 290 5432
Martiniana Po CN 5 734 6166
Saluzzo CN 6 16960 23126
Manta CN 6 3787 26913
Rifreddo CN 6 1078 27991
Gambasca CN 6 371 28362
Verzuolo CN 6 6459 34821
Envie CN 6 2074 36895
Isasca CN 7 76 36971
Piasco CN 8 2774 39745
Sanfront CN 8 2395 42140
Venasca CN 9 1437 43577
Brossasco CN 9 1084 44661
Costigliole Saluzzo CN 10 3375 48036
Lagnasco CN 11 1453 49489
Rossana CN 11 908 50397
Melle CN 12 292 50689
Valmala CN 12 52 50741
Scarnafigi CN 12 2162 52903
Barge CN 13 7774 60677
Cardè CN 13 1122 61799
Paesana CN 13 2784 64583
Frassino CN 14 265 64848
Villafalletto CN 14 2925 67773
Torre San Giorgio CN 14 730 68503
Busca CN 14 10181 78684
Vottignasco CN 15 537 79221
Villanova Solaro CN 16 772 79993
Bagnolo Piemonte CN 16 6024 86017
Ruffia CN 16 367 86384
Monasterolo di Savigliano CN 17 1371 87755
Cavour TO 17 5545 93300
Moretta CN 17 4136 97436
Villafranca Piemonte TO 17 4729 102165
Villar San Costanzo CN 18 1547 103712
Savigliano CN 19 21441 125153
Tarantasca CN 19 2122 127275
Oncino CN 19 76 127351
Murello CN 19 966 128317
Roccabruna CN 19 1585 129902
Dronero CN 20 7035 136937
Ostana CN 20 83 137020
Sampeyre CN 20 1022 138042
Genola CN 20 2625 140667
Centallo CN 20 6954 147621
Campiglione Fenile TO 20 1390 149011

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of Cuneo (56081 inhabitants)
45 Km SW of Moncalieri (57294 inhabitants)
53 Km SW of Torino (890529 inhabitants)
68 Km W of Asti (76202 inhabitants)
92 Km W of Savona (61345 inhabitants)
95 Km NW of Sanremo (54807 inhabitants)
99 Km W of Alessandria (93943 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 1.4 2020-02-13
21:49:51
44.64 7.42 10 2020-02-13
22:00:04
Sala Sismica INGV-Roma 76504311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-13 21:49:51 ± 0.11
Latitude 44.64 ± 0.00
Longitude 7.42 ± 0.01
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76504311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 980
Semi-minor axis of confidence ellipse (meter) 520
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 262
Circular confidence region, given by single value of horizontal uncertainty (meter) 980
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 151
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) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.22753
Epicentral distance of station farthest from the epicenter (degree) 0.69787
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 76504311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-13 22:00:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.STV.HHZ. 2020-02-13T21:50:05.69 0.1 undecidable manual S 190 0.3984 50 -0.17 98
GU.RORO.HHZ. 2020-02-13T21:50:04.74 0.3 undecidable manual P 139 0.6979 50 -0.12 70
GU.GBOS.HHZ. 2020-02-13T21:50:01.32 1.0 undecidable manual P 143 0.4955 50 -0.08 25
GU.PZZ.HHZ. 2020-02-13T21:50:01.47 0.3 undecidable manual S 239 0.2554 50 -0.15 76
GU.RSP.HHZ. 2020-02-13T21:50:01.75 0.3 positive manual P 348 0.5216 50 -0.1 73
GU.STV.HHZ. 2020-02-13T21:50:00.05 0.6 undecidable manual P 190 0.3984 50 0.3 48
GU.BHB.HHZ. 2020-02-13T21:50:00.51 0.3 undecidable manual S 330 0.2275 50 -0.28 75
GU.ENR.HHZ. 2020-02-13T21:50:00.11 1.0 negative manual P 180 0.411 50 0.15 25
GU.PZZ.HHZ. 2020-02-13T21:49:57.80 0.6 undecidable manual P 239 0.2554 50 0.5 47
GU.BHB.HHZ. 2020-02-13T21:49:57.06 0.1 negative manual P 330 0.2275 50 0.25 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.RSP.HHE. ML:1.4 6.16E-5 1.58 AML other m 2020-02-13T21:50:17.17
GU.RSP.HHN. ML:1.4 5.03E-5 0.42 AML other m 2020-02-13T21:50:21.84
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