Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 25-07-2021 and time 15:37:10 (Italy) in region 2 km W Cavallermaggiore (CN)

A magnitude ML 1.8 earthquake occured in region: 2 km W Cavallermaggiore (CN), on

  • 25-07-2021 13:37:10 (UTC)
  • 25-07-2021 15:37:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.7000, 7.6600 at 22 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
Cavallermaggiore CN 3 5533 5533
Monasterolo di Savigliano CN 3 1371 6904
Ruffia CN 5 367 7271
Cavallerleone CN 5 644 7915
Savigliano CN 6 21441 29356
Marene CN 7 3175 32531
Villanova Solaro CN 7 772 33303
Murello CN 8 966 34269
Scarnafigi CN 8 2162 36431
Racconigi CN 8 10038 46469
Torre San Giorgio CN 11 730 47199
Caramagna Piemonte CN 11 3034 50233
Lagnasco CN 12 1453 51686
Moretta CN 12 4136 55822
Genola CN 12 2625 58447
Polonghera CN 13 1160 59607
Sommariva del Bosco CN 13 6361 65968
Cervere CN 13 2236 68204
Sanfrè CN 13 3040 71244
Faule CN 13 486 71730
Casalgrasso CN 14 1480 73210
Saluzzo CN 15 16960 90170
Cardè CN 15 1122 91292
Villafranca Piemonte TO 15 4729 96021
Bra CN 16 29737 125758
Pancalieri TO 16 2038 127796
Lombriasco TO 16 1050 128846
Vottignasco CN 16 537 129383
Cherasco CN 17 9076 138459
Manta CN 17 3787 142246
Carmagnola TO 17 29079 171325
Ceresole Alba CN 17 2090 173415
Salmour CN 17 704 174119
Fossano CN 18 24739 198858
Verzuolo CN 18 6459 205317
Pocapaglia CN 18 3339 208656
Osasio TO 19 936 209592
Castellar CN 20 295 209887
Villafalletto CN 20 2925 212812
Virle Piemonte TO 20 1206 214018

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km S of Moncalieri (57294 inhabitants)
35 Km N of Cuneo (56081 inhabitants)
42 Km S of Torino (890529 inhabitants)
48 Km W of Asti (76202 inhabitants)
78 Km NW of Savona (61345 inhabitants)
79 Km W of Alessandria (93943 inhabitants)
98 Km N of Sanremo (54807 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 1.8 2021-07-25
13:37:10		 44.7003 7.6598 22 2021-12-29
11:12:16		 Bollettino Sismico Italiano INGV 93555441
Reviewed
Rev100 		ML 1.7 2021-07-25
13:37:10		 44.6768 7.6538 8 2021-07-25
13:43:30		 Sala Sismica INGV-Roma 93198781
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-25 13:37:10 ± 0.17
Latitude 44.7003 ± 0.0063
Longitude 7.6598 ± 0.0127
Depth (km) 22 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 93555441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 911
Semi-minor axis of confidence ellipse (meter) 358
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 85
Circular confidence region, given by single value of horizontal uncertainty (meter) 910.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.28063
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 93198781
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-25 13:43:30

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 29
Type of magnitude ML
Reference to an origin 93555441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-10 16:14:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IST3.HHZ. 2021-07-25T13:39:11.09 3.0 undecidable manual Pn 4.29 0
IV.PTRJ.HNZ. 2021-07-25T13:39:02.43 3.0 undecidable manual Pg 24.99 0
IV.APEC.HHZ. 2021-07-25T13:39:01.50 3.0 undecidable manual Sg 15.52 0
IV.VBKN.HHZ. 2021-07-25T13:38:59.71 3.0 negative manual Pg 18.57 0
IV.CPGN.EHZ. 2021-07-25T13:38:57.10 3.0 undecidable manual Sg 14.68 0
IX.NSC3.EHZ.02 2021-07-25T13:38:48.84 3.0 positive manual Pn 2.19 0
IV.MC2.EHZ. 2021-07-25T13:38:30.17 3.0 undecidable manual Pg 15.51 0
IV.ARVD.HHZ. 2021-07-25T13:38:27.68 3.0 undecidable manual Pg 18.450001 0
IV.CRTC.HHZ. 2021-07-25T13:38:25.28 3.0 undecidable manual Pg 17.74 0
IV.ZEN8.EHZ. 2021-07-25T13:38:21.10 3.0 undecidable manual Sn 5.84 0
IV.ATFO.HHZ. 2021-07-25T13:38:15.46 3.0 undecidable manual Pg 9.05 0
IV.PESA.HHZ. 2021-07-25T13:38:14.58 3.0 undecidable manual Pn 8.06 0
IV.RIBO.EHZ.01 2021-07-25T13:38:01.37 3.0 undecidable manual Pn 5.55 0
ST.RONC.EHZ. 2021-07-25T13:37:47.85 3.0 undecidable manual Pn -0.02 0
GU.IMI.HHZ. 2021-07-25T13:37:36.78 0.3 undecidable manual S 168 89.5437 98 -0.39 66
RD.ORIF.BHZ. 2021-07-25T13:37:35.02 0.3 undecidable manual P 280 142.1466 54 1.12 45
FR.SAOF.HHZ.00 2021-07-25T13:37:33.86 0.6 undecidable manual S 186 79.6647 99 -0.71 40
GU.TRAV.HHZ. 2021-07-25T13:37:33.43 0.6 undecidable manual S 4 90.3429 98 -3.94 2
GU.MGRO.HHZ. 2021-07-25T13:37:33.55 0.6 undecidable manual S 171 73.8705 100 0.5 43
GU.PCP.HHZ. 2021-07-25T13:37:32.08 0.6 undecidable manual S 104 72.0723 101 -0.5 45
GU.RORO.HHZ. 2021-07-25T13:37:32.72 0.6 undecidable manual S 154 72.7716 100 -0.03 49
GU.RRL.HHZ. 2021-07-25T13:37:32.63 0.6 undecidable manual S 290 72.6717 101 -0.1 47
IV.QLNO.HHZ. 2021-07-25T13:37:31.09 0.3 undecidable manual S 127 68.4759 101 -0.53 67
GU.ENR.HHZ. 2021-07-25T13:37:28.27 0.6 undecidable manual S 200 55.5999 104 -0.01 50
GU.STV.HHZ. 2021-07-25T13:37:28.25 0.3 undecidable manual S 208 56.9985 104 -0.38 69
IV.MONC.HHZ. 2021-07-25T13:37:27.19 0.3 undecidable manual S 27 46.4202 108 1.27 46
GU.BURY.HHZ. 2021-07-25T13:37:27.71 0.1 undecidable manual P 185 102.12 97 -0.15 89
GU.RSP.HNN. 2021-07-25T13:37:27.93 0.6 undecidable manual S 328 58.5969 104 -1.11 35
GU.GBOS.HHZ. 2021-07-25T13:37:27.97 0.6 undecidable manual S 164 52.9026 105 0.41 46
GU.PZZ.HHZ. 2021-07-25T13:37:26.31 0.6 undecidable manual S 244 48.0186 107 -0.02 50
GU.IMI.HHZ. 2021-07-25T13:37:25.89 0.1 undecidable manual P 168 89.5437 98 -0.05 94
GU.LSD.HHZ. 2021-07-25T13:37:25.52 0.3 undecidable manual P 334 93.7395 98 -1.06 50
GU.TRAV.HHZ. 2021-07-25T13:37:24.19 0.1 undecidable manual P 4 90.3429 98 -1.86 43
FR.SAOF.HHZ.00 2021-07-25T13:37:24.32 0.3 undecidable manual P 186 79.6647 99 -0.12 71
GU.RRL.HHZ. 2021-07-25T13:37:23.64 0.1 undecidable manual P 290 72.6717 101 0.27 93
GU.MGRO.HHZ. 2021-07-25T13:37:23.69 0.3 undecidable manual P 171 73.8705 100 0.13 71
GU.RORO.HHZ. 2021-07-25T13:37:23.68 0.1 undecidable manual P 154 72.7716 100 0.3 91
GU.PCP.HHZ. 2021-07-25T13:37:23.10 0.1 undecidable manual P 104 72.0723 101 -0.19 96
GU.BHB.HHZ. 2021-07-25T13:37:23.46 0.3 undecidable manual S 296 34.6431 115 0.47 71
IV.QLNO.HHZ. 2021-07-25T13:37:22.79 0.1 undecidable manual P 127 68.4759 101 0.06 96
GU.RSP.HNN. 2021-07-25T13:37:20.76 0.3 undecidable manual P 328 58.5969 104 -0.48 68
GU.GBOS.HHZ. 2021-07-25T13:37:20.88 0.1 undecidable manual P 164 52.9026 105 0.49 91
IV.MONC.HHZ. 2021-07-25T13:37:20.02 0.1 negative manual P 27 46.4202 108 0.57 87
GU.ENR.HHZ. 2021-07-25T13:37:20.95 0.1 negative manual P 200 55.5999 104 0.14 98
GU.STV.HHZ. 2021-07-25T13:37:20.91 0.1 undecidable manual P 208 56.9985 104 -0.1 98
GU.PZZ.HHZ. 2021-07-25T13:37:19.81 0.1 negative manual P 244 48.0186 107 0.13 100
GU.BHB.HHZ. 2021-07-25T13:37:18.26 0.1 undecidable manual P 296 34.6431 115 0.51 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.BHB.HHE. ML:1.5 0.00011549999999999999 0.52 AML other m 2021-07-25T13:37:23.72
GU.BHB.HNE. ML:1.5 0.000122 0.52 AML other m 2021-07-25T13:37:23.98
GU.BHB.HHN. ML:1.6 0.0001365 0.64 AML other m 2021-07-25T13:37:24.46
GU.BHB.HNN. ML:1.6 0.00013900000000000002 0.64 AML other m 2021-07-25T13:37:24.14
GU.PZZ.HHN. ML:2.0 0.0002545 0.18 AML other m 2021-07-25T13:37:26.65
GU.PZZ.HHE. ML:1.9 0.000216 0.56 AML other m 2021-07-25T13:37:26.87
IV.MONC.HHN. ML:1.9 0.00019600000000000002 1.18 AML other m 2021-07-25T13:37:27.90
GU.GBOS.HHE. ML:2.1 0.000307 0.46 AML other m 2021-07-25T13:37:28.31
GU.STV.HHE. ML:1.5 0.0000626 0.16 AML other m 2021-07-25T13:37:28.59
GU.GBOS.HHN. ML:1.8 0.000152 0.42 AML other m 2021-07-25T13:37:28.69
GU.STV.HHN. ML:1.4 0.0000519 1.04 AML other m 2021-07-25T13:37:28.74
IV.MONC.HHE. ML:1.9 0.00021150000000000002 0.16 AML other m 2021-07-25T13:37:29.05
IV.QLNO.HHN. ML:1.7 0.00008280000000000001 0.48 AML other m 2021-07-25T13:37:31.73
GU.RORO.HHE. ML:2.0 0.0001536 0.22 AML other m 2021-07-25T13:37:32.84
GU.RORO.HHN. ML:1.6 0.0000657 1.68 AML other m 2021-07-25T13:37:32.04
GU.RRL.HHN. ML:1.4 0.00003255 1.12 AML other m 2021-07-25T13:37:33.09
IV.QLNO.HHE. ML:1.8 0.00009504999999999999 0.42 AML other m 2021-07-25T13:37:33.45
GU.TRAV.HHN. ML:1.7 0.000061 0.22 AML other m 2021-07-25T13:37:34.49
GU.RRL.HHE. ML:1.3 0.00003085 1.26 AML other m 2021-07-25T13:37:34.17
GU.TRAV.HHE. ML:1.9 0.000083 1.08 AML other m 2021-07-25T13:37:34.33
FR.SAOF.HHE.00 ML:1.7 0.00006365 1.2 AML other m 2021-07-25T13:37:34.97
FR.SAOF.HHN.00 ML:1.7 0.00007195 0.48 AML other m 2021-07-25T13:37:36.61
GU.LSD.HHN. ML:1.6 0.000040050000000000004 0.36 AML other m 2021-07-25T13:37:36.73
GU.LSD.HHE. ML:1.6 0.0000421 0.6 AML other m 2021-07-25T13:37:36.55
GU.IMI.HHN. ML:2.0 0.00011949999999999999 0.92 AML other m 2021-07-25T13:37:39.16
GU.IMI.HHE. ML:2.0 0.00011380000000000001 0.42 AML other m 2021-07-25T13:37:40.49
CH.MUGIO.HHN. ML:2.2 0.00006515 0.04 AML other m 2021-07-25T13:37:59.90
CH.MUGIO.HHE. ML:1.8 0.000023449999999999997 0.62 AML other m 2021-07-25T13:38:02.57
IV.MSSA.HHN. ML:2.8 0.000322 0.06 AML other m 2021-07-25T13:38:08.55
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