Earthquake with magnitude of ML 1.5 on date 16-09-2021 and time 14:27:21 (Italy) in region 2 km NE Pradleves (CN)

A magnitude ML 1.5 earthquake occured in region: 2 km NE Pradleves (CN), on

  • 16-09-2021 12:27:21 (UTC)
  • 16-09-2021 14:27:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.437, 7.292 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
Pradleves CN 2 250 250
Monterosso Grana CN 4 505 755
Cartignano CN 5 190 945
Roccabruna CN 6 1585 2530
San Damiano Macra CN 6 430 2960
Montemale di Cuneo CN 7 241 3201
Dronero CN 7 7035 10236
Castelmagno CN 7 66 10302
Valgrana CN 8 786 11088
Villar San Costanzo CN 9 1547 12635
Celle di Macra CN 10 100 12735
Caraglio CN 11 6836 19571
Macra CN 11 59 19630
Bernezzo CN 13 4104 23734
Valmala CN 13 52 23786
Valloriate CN 13 109 23895
Rittana CN 13 109 24004
Demonte CN 13 2003 26007
Melle CN 14 292 26299
Gaiola CN 15 582 26881
Aisone CN 15 248 27129
Frassino CN 15 265 27394
Moiola CN 15 234 27628
Stroppo CN 15 103 27731
Cervasca CN 15 5013 32744
Marmora CN 16 68 32812
Brossasco CN 16 1084 33896
Roccasparvera CN 16 741 34637
Rossana CN 16 908 35545
Venasca CN 16 1437 36982
Vignolo CN 17 2600 39582
Canosio CN 17 80 39662
Busca CN 17 10181 49843
Vinadio CN 17 644 50487
Sampeyre CN 18 1022 51509
Isasca CN 18 76 51585
Prazzo CN 19 170 51755
Valdieri CN 20 935 52690
Elva CN 20 97 52787
Borgo San Dalmazzo CN 20 12468 65255
Piasco CN 20 2774 68029

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km W of Cuneo (56081 inhabitants)
70 Km SW of Moncalieri (57294 inhabitants)
77 Km SW of Torino (890529 inhabitants)
79 Km NW of Sanremo (54807 inhabitants)
89 Km SW of Asti (76202 inhabitants)
96 Km W 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 1.5 2021-09-16
12:27:21
44.437 7.2917 10 2021-09-16
12:38:37
Sala Sismica INGV-Roma 95509591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-16 12:27:21 ± 0.11
Latitude 44.4370 ± 0.0126
Longitude 7.2917 ± 0.0252
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95509591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2399
Semi-minor axis of confidence ellipse (meter) 384
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 2400
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.76173
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 95509591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-16 12:38:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CRTO.HHZ. 2021-09-16T12:29:20.05 3.0 undecidable manual Pg 24.66 0
IV.PE3.EHZ. 2021-09-16T12:29:09.36 3.0 undecidable manual Sn 3.57 0
IV.SACS.HHZ. 2021-09-16T12:29:00.81 3.0 undecidable manual Sn -2.51 0
IV.PTRJ.HHZ. 2021-09-16T12:28:57.90 3.0 undecidable manual Pn 5.9 0
IV.RIBO.EHZ.01 2021-09-16T12:28:54.50 3.0 undecidable manual Sn 5.92 0
IV.CRMI.HHZ. 2021-09-16T12:28:52.71 3.0 undecidable manual Sg 13.55 0
IV.ZEN8.EHZ. 2021-09-16T12:28:50.66 3.0 undecidable manual Sg 12.48 0
IV.FDMO.HHZ. 2021-09-16T12:28:40.87 3.0 negative manual Pg 12.57 0
IV.PP3.EHZ. 2021-09-16T12:28:37.92 3.0 positive manual Pn 6.12 0
RD.PGF.BHZ. 2021-09-16T12:28:30.06 3.0 undecidable manual Sg 1.35 0
IV.NARO.HHZ. 2021-09-16T12:28:25.35 3.0 undecidable manual Pn 4.33 0
IV.ORZI.HHZ. 2021-09-16T12:28:02.33 3.0 positive manual Pg 6.28 0
RD.ORIF.BHZ. 2021-09-16T12:27:42.82 3.0 positive manual P -0.66 0
GU.GBOS.HHZ. 2021-09-16T12:27:36.66 0.3 undecidable manual S 116 0.438 50 -0.43 69
IV.QLNO.HHZ. 2021-09-16T12:27:36.59 0.6 positive manual P 98 0.7617 50 0.62 41
GU.CANO.HHZ. 2021-09-16T12:27:35.54 0.3 undecidable manual P 108 0.7141 50 0.38 66
GU.RORO.HHZ. 2021-09-16T12:27:34.10 0.3 undecidable manual P 120 0.6421 50 0.17 70
GU.IMI.HHZ. 2021-09-16T12:27:34.80 0.3 undecidable manual P 140 0.6799 50 0.22 69
GU.RSP.HHZ. 2021-09-16T12:27:34.76 0.3 undecidable manual P 358 0.7114 50 -0.34 67
GU.RRL.HHZ. 2021-09-16T12:27:33.18 0.6 positive manual P 324 0.6007 50 -0.04 49
GU.MGRO.HHZ. 2021-09-16T12:27:32.32 0.3 undecidable manual P 137 0.5405 50 0.13 72
FR.SAOF.HHZ.00 2021-09-16T12:27:31.24 0.3 undecidable manual P 157 0.4883 50 -0.05 74
GU.ENR.HHZ. 2021-09-16T12:27:30.25 0.3 undecidable manual S 156 0.2266 111 -0.41 73
GU.GBOS.HHZ. 2021-09-16T12:27:30.61 0.3 undecidable manual P 116 0.438 50 0.18 73
GU.BHB.HHZ. 2021-09-16T12:27:29.14 0.3 undecidable manual P 357 0.3984 50 -0.62 66
GU.STV.HHZ. 2021-09-16T12:27:29.22 0.3 undecidable manual S 173 0.1934 114 -0.27 75
GU.PZZ.HHZ. 2021-09-16T12:27:27.66 0.3 undecidable manual S 299 0.143 121 -0.12 79
GU.STV.HHZ. 2021-09-16T12:27:26.31 0.3 undecidable manual P 173 0.1934 114 0.27 76
GU.ENR.HHZ. 2021-09-16T12:27:26.92 1.0 undecidable manual P 156 0.2266 111 0.2 25
GU.PZZ.HHZ. 2021-09-16T12:27:25.40 0.1 positive manual P 299 0.143 121 0.34 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:2.1 0.00109 0.24 AML other m 2021-09-16T12:27:27.91
GU.PZZ.HHE. ML:1.8 0.000658 0.28 AML other m 2021-09-16T12:27:27.81
GU.STV.HHN. ML:1.3 0.000145 0.08 AML other m 2021-09-16T12:27:29.30
GU.STV.HHE. ML:1.4 0.0001925 0.1 AML other m 2021-09-16T12:27:29.41
GU.ENR.HHN. ML:1.6 0.000267 0.08 AML other m 2021-09-16T12:27:30.51
GU.ENR.HHE. ML:1.6 0.000249 0.74 AML other m 2021-09-16T12:27:30.33
GU.BHB.HHE. ML:1.2 4.425E-5 0.76 AML other m 2021-09-16T12:27:36.76
GU.BHB.HHN. ML:1.1 4.22E-5 1.88 AML other m 2021-09-16T12:27:36.03
GU.GBOS.HHE. ML:1.9 0.0002235 1.78 AML other m 2021-09-16T12:27:37.90
GU.GBOS.HHN. ML:1.6 0.0001202 0.7 AML other m 2021-09-16T12:27:37.30
GU.MGRO.HHE. ML:1.5 5.85E-5 1.18 AML other m 2021-09-16T12:27:40.14
GU.MGRO.HHN. ML:1.6 8.91E-5 0.52 AML other m 2021-09-16T12:27:41.66
GU.RRL.HHE. ML:1.2 2.9E-5 1 AML other m 2021-09-16T12:27:42.31
GU.RRL.HHN. ML:1.3 3.325E-5 0.46 AML other m 2021-09-16T12:27:44.33
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