Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 30-09-2023 and time 09:05:22 (Italy) in region 4 km SE Celle di Macra (CN)

A magnitude ML 2.4 earthquake occured in region: 4 km SE Celle di Macra (CN), on

  • 30-09-2023 07:05:22 (UTC)
  • 30-09-2023 09:05:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.4590, 7.2110 at 22 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.

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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
Celle di Macra CN 4 100 100
San Damiano Macra CN 5 430 530
Macra CN 5 59 589
Castelmagno CN 5 66 655
Cartignano CN 7 190 845
Pradleves CN 7 250 1095
Stroppo CN 9 103 1198
Marmora CN 9 68 1266
Canosio CN 10 80 1346
Roccabruna CN 11 1585 2931
Monterosso Grana CN 11 505 3436
Dronero CN 12 7035 10471
Prazzo CN 13 170 10641
Montemale di Cuneo CN 13 241 10882
Elva CN 13 97 10979
Sampeyre CN 14 1022 12001
Frassino CN 14 265 12266
Villar San Costanzo CN 14 1547 13813
Valmala CN 15 52 13865
Melle CN 15 292 14157
Valgrana CN 15 786 14943
Aisone CN 16 248 15191
Sambuco CN 17 92 15283
Vinadio CN 17 644 15927
Demonte CN 17 2003 17930
Brossasco CN 17 1084 19014
Acceglio CN 17 162 19176
Caraglio CN 18 6836 26012
Casteldelfino CN 19 157 26169
Valloriate CN 19 109 26278
Venasca CN 19 1437 27715
Pietraporzio CN 19 77 27792
Rittana CN 19 109 27901
Bernezzo CN 20 4104 32005
Isasca CN 20 76 32081

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km W of Cuneo (56081 inhabitants)
71 Km SW of Moncalieri (57294 inhabitants)
78 Km SW of Torino (890529 inhabitants)
84 Km NW of Sanremo (54807 inhabitants)
93 Km SW of Asti (76202 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
Reviewed
Rev100 		ML 2.4 2023-09-30
07:05:22		 44.4587 7.2107 22 2023-09-30
07:15:01		 Sala Sismica INGV-Roma 121607971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-30 07:05:22 ± 0.11
Latitude 44.4587 ± 0.0063
Longitude 7.2107 ± 0.0101
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121607971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 853
Semi-minor axis of confidence ellipse (meter) 486
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 228
Circular confidence region, given by single value of horizontal uncertainty (meter) 850.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.62687
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 26
Magnitude information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 121607971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-30 07:15:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHZ. 2023-09-30T07:07:11.44 3.0 undecidable manual Sg 15.45 0
IV.MAGA.HHZ. 2023-09-30T07:06:41.22 3.0 undecidable manual Sn 0.58 0
IV.GUMA.HHZ. 2023-09-30T07:06:40.14 3.0 positive manual Pn 7.57 0
IV.MMO1.EHZ. 2023-09-30T07:06:34.86 3.0 negative manual Pn 1.58 0
IV.TOLF.HHZ. 2023-09-30T07:06:31.59 3.0 undecidable manual Pn 4.66 0
IV.RIBO.EHZ.01 2023-09-30T07:06:19.45 3.0 undecidable manual Pg 7.29 0
ST.VARA.EHZ. 2023-09-30T07:06:15.22 3.0 undecidable manual Pn 6.14 0
GU.RNCA.HHZ. 2023-09-30T07:06:02.39 0.6 undecidable manual S 89 137.7621 95 0.22 40
CH.DIX.HHE. 2023-09-30T07:05:50.20 0.1 undecidable manual P 5 180.5859 54 -0.68 60
GU.MMK.HHZ. 2023-09-30T07:05:48.84 3.0 undecidable manual P 0
GU.SATI.HHZ. 2023-09-30T07:05:48.91 0.1 undecidable manual P 18 165.4122 54 -0.09 75
GU.GORR.HHZ. 2023-09-30T07:05:48.91 0.1 undecidable manual P 84 165.4122 54 -0.09 75
4P.IT02A.HHE. 2023-09-30T07:05:47.35 0.1 undecidable manual P 35 157.5201 54 -0.67 68
GU.REMY.HHE. 2023-09-30T07:05:47.40 0.1 undecidable manual P 358 153.0357 54 -0.06 80
IV.MRGE.HHZ. 2023-09-30T07:05:46.31 0.1 undecidable manual P 355 145.9428 54 -0.26 79
GU.IMI.HHE. 2023-09-30T07:05:46.98 0.6 undecidable manual S 138 81.5517 99 -0.28 44
GU.RNCA.HHZ. 2023-09-30T07:05:46.21 0.1 negative manual P 89 137.7621 95 0.68 70
GU.RORO.HHZ. 2023-09-30T07:05:45.65 0.3 undecidable manual S 119 78.0663 100 -0.7 59
RD.ORIF.BHZ. 2023-09-30T07:05:43.66 3.0 undecidable manual P 0.09 0
GU.RRL.HHZ. 2023-09-30T07:05:42.09 0.6 undecidable manual S 327 61.0944 103 0.18 47
GU.MGRO.HHZ. 2023-09-30T07:05:42.70 0.6 undecidable manual S 134 66.1893 102 -0.54 43
GU.LSD.HHZ. 2023-09-30T07:05:41.68 0.6 negative manual P 357 111.1998 96 0.22 42
FR.SAOF.HHZ.00 2023-09-30T07:05:40.87 0.6 undecidable manual S 152 59.0964 103 -0.51 44
GU.PCP.HHZ. 2023-09-30T07:05:40.74 0.1 positive manual P 85 106.0161 97 0.08 88
GU.ROTM.HHZ. 2023-09-30T07:05:40.20 0.1 undecidable manual P 64 99.9222 97 0.46 82
4P.IT06A.HHZ. 2023-09-30T07:05:39.91 0.6 undecidable manual S 81 53.6019 105 -0.07 49
IV.MONC.HHZ. 2023-09-30T07:05:38.80 0.3 negative manual P 39 88.5447 98 0.8 55
IV.QLNO.HHZ. 2023-09-30T07:05:38.59 0.6 undecidable manual P 99 91.242 98 0.19 44
GU.BURY.HHZ. 2023-09-30T07:05:37.31 0.3 negative manual P 160 79.8645 99 0.63 61
GU.IMI.HHE. 2023-09-30T07:05:37.04 0.1 undecidable manual P 138 81.5517 99 0.12 92
GU.CANO.HHZ. 2023-09-30T07:05:37.74 0.3 undecidable manual P 109 86.0472 99 0.12 68
GU.RORO.HHZ. 2023-09-30T07:05:36.43 0.1 positive manual P 119 78.0663 100 0.03 94
GU.RSP.HHZ. 2023-09-30T07:05:35.35 0.1 undecidable manual P 3 76.6677 100 -0.83 75
GU.MGRO.HHZ. 2023-09-30T07:05:34.71 0.1 positive manual P 134 66.1893 102 0.11 95
GU.RRL.HHZ. 2023-09-30T07:05:34.40 0.3 positive manual P 327 61.0944 103 0.57 64
4P.IT06A.HHZ. 2023-09-30T07:05:33.12 0.1 positive manual P 81 53.6019 105 0.4 91
GU.ENR.HHZ. 2023-09-30T07:05:33.57 0.6 undecidable manual S 147 30.2475 119 -0.59 44
FR.SAOF.HHZ.00 2023-09-30T07:05:33.79 0.1 positive manual P 152 59.0964 103 0.26 93
GU.STV.HHZ. 2023-09-30T07:05:32.66 0.6 undecidable manual S 159 25.3524 124 -0.38 48
GU.GBOS.HHZ. 2023-09-30T07:05:32.94 0.1 positive manual P 116 55.4001 104 -0.04 98
GU.BHB.HHZ. 2023-09-30T07:05:30.51 0.3 positive manual P 6 42.0246 110 -0.5 68
GU.PZZ.HHZ. 2023-09-30T07:05:29.65 0.6 undecidable manual S 305 9.1797 154 -0.52 47
GU.ENR.HHZ. 2023-09-30T07:05:29.55 0.1 undecidable manual P 147 30.2475 119 0.19 100
GU.STV.HHZ. 2023-09-30T07:05:28.99 0.1 undecidable manual P 159 25.3524 124 0.27 99
GU.PZZ.HHZ. 2023-09-30T07:05:27.27 1.0 undecidable manual P 305 9.1797 154 0.21 26
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.STV.HHE. ML:2.9 0.00332 0.26 AML other m 2023-09-30T07:05:32.75
GU.STV.HHN. ML:2.8 0.002675 0.16 AML other m 2023-09-30T07:05:32.78
GU.BHB.HNE. ML:2.1 0.000368 0.34 AML other m 2023-09-30T07:05:35.18
GU.BHB.HHE. ML:2.1 0.00037 0.98 AML other m 2023-09-30T07:05:36.88
GU.GBOS.HHE. ML:2.7 0.0010805 0.16 AML other m 2023-09-30T07:05:39.57
4P.IT06A.HHN. ML:3.4 0.00542 0.22 AML other m 2023-09-30T07:05:39.88
4P.IT06A.HHE. ML:3.1 0.003085 1.8 AML other m 2023-09-30T07:05:39.92
GU.BHB.HNN. ML:2.2 0.00043 1.26 AML other m 2023-09-30T07:05:40.23
GU.BHB.HHN. ML:2.2 0.000419 1.24 AML other m 2023-09-30T07:05:40.23
GU.GBOS.HHN. ML:2.3 0.0004555 0.3 AML other m 2023-09-30T07:05:40.64
FR.SAOF.HHN.00 ML:2.2 0.00032999999999999994 0.06 AML other m 2023-09-30T07:05:42.33
FR.SAOF.HHE.00 ML:2.3 0.000416 0.44 AML other m 2023-09-30T07:05:42.73
GU.RRL.HHE. ML:2.3 0.00035250000000000006 0.5 AML other m 2023-09-30T07:05:42.92
GU.RRL.HHN. ML:2.4 0.00045650000000000004 1.24 AML other m 2023-09-30T07:05:43.02
GU.RORO.HHN. ML:2.4 0.00035549999999999997 1 AML other m 2023-09-30T07:05:46.04
GU.BURY.HNN. ML:2.2 0.0002095 0.86 AML other m 2023-09-30T07:05:47.21
GU.RORO.HHE. ML:2.4 0.0003725 0.18 AML other m 2023-09-30T07:05:47.26
GU.BURY.HNE. ML:2.1 0.00016999999999999999 0.64 AML other m 2023-09-30T07:05:47.89
GU.RSP.HHN. ML:1.6 0.00005665000000000001 1.56 AML other m 2023-09-30T07:05:48.00
GU.RSP.HHE. ML:1.7 0.00006405 0.92 AML other m 2023-09-30T07:05:49.18
GU.CANO.HHE. ML:2.6 0.00042 0.66 AML other m 2023-09-30T07:05:49.38
GU.CANO.HHN. ML:2.5 0.00035350000000000003 1.18 AML other m 2023-09-30T07:05:49.90
GU.PCP.HHN. ML:2.3 0.00017449999999999999 0.8 AML other m 2023-09-30T07:05:53.35
GU.BURY.HHE. ML:2.2 0.000195 0.22 AML other m 2023-09-30T07:05:54.26
GU.BURY.HHN. ML:2.1 0.00017449999999999999 0.98 AML other m 2023-09-30T07:05:54.46
GU.PCP.HHE. ML:2.2 0.00014500000000000003 0.94 AML other m 2023-09-30T07:05:56.01
GU.LSD.HHN. ML:2.2 0.000124 0.22 AML other m 2023-09-30T07:05:56.59
GU.LSD.HHE. ML:2.3 0.000175 1.38 AML other m 2023-09-30T07:05:56.88
IV.MONC.HHE. ML:2.6 0.00041 0.42 AML other m 2023-09-30T07:05:57.17
GU.ROTM.HHN. ML:3.0 0.0009695 0.38 AML other m 2023-09-30T07:06:00.20
IV.MONC.HHN. ML:2.4 0.0003185 0.44 AML other m 2023-09-30T07:06:02.00
RD.ORIF.BHN. ML:2.0 0.00008690000000000001 0.72 AML other m 2023-09-30T07:06:03.27
RD.ORIF.BHE. ML:2.2 0.00011499999999999999 0.56 AML other m 2023-09-30T07:06:03.23
GU.ROTM.HHE. ML:2.8 0.0005700000000000001 0.46 AML other m 2023-09-30T07:06:06.30
IV.MAGA.HHE. ML:2.8 0.0000773 0.08 AML other m 2023-09-30T07:06:52.94
IV.MAGA.HHN. ML:2.6 0.000049449999999999996 0.42 AML other m 2023-09-30T07:06:57.13
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
Waveforms Seismic signals in miniseed + resp format Download