Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 04-01-2021 and time 13:29:34 (Italy) in region 1 km E Rossana (CN)

A magnitude ML 1.5 earthquake occured in region: 1 km E Rossana (CN), on

  • 04-01-2021 12:29:34 (UTC)
  • 04-01-2021 13:29:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.5420, 7.4460 at 24 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Rossana CN 1 908 908
Piasco CN 3 2774 3682
Busca CN 4 10181 13863
Costigliole Saluzzo CN 4 3375 17238
Venasca CN 5 1437 18675
Verzuolo CN 7 6459 25134
Isasca CN 7 76 25210
Brondello CN 7 290 25500
Villafalletto CN 7 2925 28425
Brossasco CN 8 1084 29509
Valmala CN 8 52 29561
Pagno CN 8 585 30146
Villar San Costanzo CN 8 1547 31693
Manta CN 9 3787 35480
Castellar CN 9 295 35775
Tarantasca CN 10 2122 37897
Melle CN 10 292 38189
Dronero CN 11 7035 45224
Vottignasco CN 11 537 45761
Roccabruna CN 11 1585 47346
Martiniana Po CN 11 734 48080
Centallo CN 12 6954 55034
Saluzzo CN 12 16960 71994
Gambasca CN 13 371 72365
Lagnasco CN 13 1453 73818
Montemale di Cuneo CN 13 241 74059
Revello CN 13 4262 78321
Frassino CN 14 265 78586
Caraglio CN 14 6836 85422
Rifreddo CN 14 1078 86500
Cartignano CN 14 190 86690
Sanfront CN 15 2395 89085
Valgrana CN 16 786 89871
San Damiano Macra CN 16 430 90301
Envie CN 17 2074 92375
Bernezzo CN 17 4104 96479
Monterosso Grana CN 18 505 96984
Cervasca CN 18 5013 101997
Genola CN 18 2625 104622
Scarnafigi CN 18 2162 106784
Cuneo CN 19 56081 162865
Pradleves CN 19 250 163115
Castelletto Stura CN 19 1351 164466
Montanera CN 20 760 165226

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NW of Cuneo (56081 inhabitants)
55 Km SW of Moncalieri (57294 inhabitants)
62 Km SW of Torino (890529 inhabitants)
72 Km SW of Asti (76202 inhabitants)
85 Km NW of Sanremo (54807 inhabitants)
86 Km W of Savona (61345 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.5 2021-01-04
12:29:34		 44.5422 7.4463 24 2021-07-12
16:54:55		 Bollettino Sismico Italiano INGV 86352361
Reviewed
Rev100 		ML 1.4 2021-01-04
12:29:35		 44.5388 7.4492 18 2021-01-04
12:47:20		 Sala Sismica INGV-Roma 86013121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-04 12:29:34 ± 0.18
Latitude 44.5422 ± 0.0099
Longitude 7.4463 ± 0.0177
Depth (km) 24 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86352361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1267
Semi-minor axis of confidence ellipse (meter) 1009
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 54
Circular confidence region, given by single value of horizontal uncertainty (meter) 1270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.06210
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 86352361
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-05 12:16:07

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 86013121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-04 12:47:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SRES.HHZ. 2021-01-04T12:31:31.13 3.0 undecidable manual Sn -3.02 0
IV.ARVD.HHZ. 2021-01-04T12:31:27.73 3.0 undecidable manual Sn 0.45 0
IV.IMOL.HNZ. 2021-01-04T12:31:01.95 3.0 undecidable manual Sn -0.02 0
IV.MNTV.HNZ. 2021-01-04T12:30:47.76 3.0 undecidable manual Sn 1.74 0
IV.BRES.EHZ. 2021-01-04T12:30:43.82 3.0 undecidable manual Pg 12.42 0
IV.IMOL.EHZ. 2021-01-04T12:30:36.92 3.0 negative manual Pg 13.38 0
IV.CAVE.HHZ. 2021-01-04T12:30:17.86 3.0 positive manual Pn 1.75 0
GU.PCP.HHZ. 2021-01-04T12:30:01.12 0.6 undecidable manual S 90 86.8464 100 0.3 45
GU.CANO.HHZ. 2021-01-04T12:29:56.86 0.3 undecidable manual S 120 72.8715 102 -0.29 69
GU.RORO.HHZ. 2021-01-04T12:29:55.67 0.6 undecidable manual S 134 68.4759 103 -0.34 46
GU.RRL.HHZ. 2021-01-04T12:29:55.09 0.6 undecidable manual S 309 66.6777 103 -0.44 46
GU.CIRO.HHZ. 2021-01-04T12:29:53.56 0.3 undecidable manual P 5 117.8931 97 -1.03 48
FR.SAOF.HHZ.00 2021-01-04T12:29:53.40 0.6 undecidable manual S 172 62.2932 105 -1 37
GU.LSD.HHZ. 2021-01-04T12:29:52.20 0.3 undecidable manual P 347 104.7174 98 -0.36 64
GU.TRAV.HHZ. 2021-01-04T12:29:52.28 0.3 undecidable manual P 12 110.112 98 -1.12 47
GU.PCP.HHZ. 2021-01-04T12:29:50.63 0.3 undecidable manual P 90 86.8464 100 0.77 59
GU.BURY.HNZ. 2021-01-04T12:29:49.71 0.6 undecidable manual P 174 84.7485 100 0.18 46
MN.BNI.HHZ. 2021-01-04T12:29:49.80 0.6 undecidable manual P 313 82.8504 101 0.56 42
GU.CANO.HHZ. 2021-01-04T12:29:48.33 0.3 undecidable manual P 120 72.8715 102 0.59 64
GU.RORO.HHZ. 2021-01-04T12:29:47.44 0.3 undecidable manual P 134 68.4759 103 0.36 69
GU.RRL.HHZ. 2021-01-04T12:29:47.36 0.1 undecidable manual P 309 66.6777 103 0.56 87
GU.BHB.HNZ. 2021-01-04T12:29:47.11 0.6 undecidable manual S 336 35.6421 117 -0.6 46
FR.SAOF.HHZ.00 2021-01-04T12:29:46.15 0.1 undecidable manual P 172 62.2932 105 0 100
GU.STV.HHZ. 2021-01-04T12:29:46.61 0.3 undecidable manual S 196 34.3434 118 -0.8 65
GU.PZZ.HHZ. 2021-01-04T12:29:45.59 0.6 undecidable manual S 262 26.4513 126 -0.04 53
GU.STV.HHZ. 2021-01-04T12:29:42.18 0.3 undecidable manual P 196 34.3434 118 0.07 78
GU.BHB.HNZ. 2021-01-04T12:29:42.65 0.1 undecidable manual P 336 35.6421 117 0.36 98
GU.PZZ.HHZ. 2021-01-04T12:29:41.59 0.1 undecidable manual P 262 26.4513 126 0.51 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PZZ.HHN. ML:1.8 0.000256 0.2 AML other m 2021-01-04T12:29:45.80
GU.PZZ.HHE. ML:1.8 0.000249 0.1 AML other m 2021-01-04T12:29:46.01
GU.STV.HHE. ML:1.5 0.00010275 0.14 AML other m 2021-01-04T12:29:46.69
GU.STV.HHN. ML:1.1 0.000041137685 2.4576 AML other m 2021-01-04T12:29:47.30
GU.RRL.HHE. ML:1.3 0.0000349102 2.5984 AML other m 2021-01-04T12:29:55.59
GU.RORO.HHN. ML:1.5 0.00004986425499999999 0.1792 AML other m 2021-01-04T12:29:56.10
GU.CANO.HHN. ML:1.7 0.00007677341 3.0592 AML other m 2021-01-04T12:29:56.22
GU.RRL.HHN. ML:1.3 0.000028391755000000002 1.6192 AML other m 2021-01-04T12:29:56.30
GU.PCP.HHN. ML:1.5 0.000033126825 3.0144 AML other m 2021-01-04T12:30:01.86
GU.PCP.HHE. ML:1.5 0.000037107995000000004 0.864 AML other m 2021-01-04T12:30:02.17
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