Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 07-02-2023 and time 22:41:37 (UTC) in region 1 km SW Coazzolo (AT)

A magnitude ML 1.4 earthquake occured in region: 1 km SW Coazzolo (AT), on

  • 07-02-2023 22:41:37 (UTC)
  • 07-02-2023 23:41:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.7220, 8.1330 at 18 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
Coazzolo AT 1 302 302
Neive CN 1 3405 3707
Neviglie CN 3 382 4089
Castagnole delle Lanze AT 4 3798 7887
Barbaresco CN 4 658 8545
Mango CN 4 1308 9853
Castiglione Tinella CN 5 895 10748
Treiso CN 5 820 11568
Trezzo Tinella CN 5 331 11899
Camo CN 6 201 12100
Magliano Alfieri CN 7 2153 14253
Calosso AT 8 1279 15532
Cossano Belbo CN 8 958 16490
Alba CN 8 31437 47927
Santo Stefano Belbo CN 8 3984 51911
Guarene CN 8 3596 55507
Costigliole d'Asti AT 8 5914 61421
Castagnito CN 9 2163 63584
Priocca CN 10 2017 65601
Govone CN 10 2203 67804
Rocchetta Belbo CN 10 167 67971
Castellinaldo d'Alba CN 10 938 68909
Benevello CN 11 474 69383
San Martino Alfieri AT 11 666 70049
Borgomale CN 11 381 70430
Diano d'Alba CN 11 3570 74000
Rodello CN 12 980 74980
Loazzolo AT 12 359 75339
Vezza d'Alba CN 12 2287 77626
Cessole AT 12 403 78029
Vesime AT 12 622 78651
Castino CN 12 483 79134
Piobesi d'Alba CN 12 1288 80422
Agliano Terme AT 12 1642 82064
Canelli AT 12 10485 92549
Moasca AT 12 494 93043
Isola d'Asti AT 13 2071 95114
Montelupo Albese CN 13 529 95643
Lequio Berria CN 13 487 96130
Bosia CN 13 177 96307
Roddi CN 13 1607 97914
San Marzano Oliveto AT 14 1047 98961
Corneliano d'Alba CN 14 2118 101079
San Damiano d'Asti AT 14 8315 109394
Grinzane Cavour CN 14 1995 111389
Antignano AT 14 974 112363
Cassinasco AT 14 611 112974
Canale CN 14 5686 118660
Montegrosso d'Asti AT 14 2344 121004
Bubbio AT 14 893 121897
Castelnuovo Calcea AT 14 759 122656
Albaretto della Torre CN 15 242 122898
Perletto CN 15 292 123190
Vigliano d'Asti AT 15 835 124025
San Giorgio Scarampi AT 15 122 124147
Monticello d'Alba CN 15 2292 126439
Celle Enomondo AT 15 484 126923
Arguello CN 15 199 127122
Cisterna d'Asti AT 15 1245 128367
Revigliasco d'Asti AT 16 767 129134
Montaldo Scarampi AT 16 755 129889
Mongardino AT 16 921 130810
Santa Vittoria d'Alba CN 16 2795 133605
Sinio CN 16 522 134127
Castiglione Falletto CN 16 700 134827
Calamandrana AT 16 1761 136588
Serralunga d'Alba CN 16 564 137152
Cortemilia CN 16 2331 139483
Cravanzana CN 16 411 139894
Cerretto Langhe CN 17 442 140336
Mombercelli AT 17 2259 142595
Verduno CN 17 588 143183
Santo Stefano Roero CN 17 1390 144573
Rocchetta Palafea AT 17 338 144911
Montà CN 17 4733 149644
Montaldo Roero CN 17 844 150488
Monteu Roero CN 17 1634 152122
Sessame AT 17 271 152393
Monastero Bormida AT 17 931 153324
Vinchio AT 18 601 153925
Olmo Gentile AT 18 80 154005
Baldissero d'Alba CN 18 1069 155074
Torre Bormida CN 18 200 155274
Roccaverano AT 18 399 155673
Sommariva Perno CN 18 2797 158470
La Morra CN 18 2724 161194
Vaglio Serra AT 18 275 161469
Roddino CN 19 400 161869
Serravalle Langhe CN 19 315 162184
Nizza Monferrato AT 19 10429 172613
Tigliole AT 19 1699 174312
Pocapaglia CN 19 3339 177651
Cissone CN 19 85 177736
Barolo CN 19 740 178476
Bergolo CN 20 71 178547
Castel Boglione AT 20 609 179156
Belveglio AT 20 350 179506
Bistagno AL 20 1887 181393
Feisoglio CN 20 316 181709

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km S of Asti (76202 inhabitants)
44 Km W of Alessandria (93943 inhabitants)
47 Km SE of Moncalieri (57294 inhabitants)
53 Km SE of Torino (890529 inhabitants)
54 Km NW of Savona (61345 inhabitants)
59 Km NE of Cuneo (56081 inhabitants)
72 Km W of Genova (586655 inhabitants)
88 Km SW of Vigevano (63310 inhabitants)
89 Km SW of Novara (104380 inhabitants)
96 Km SW of Pavia (72576 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 1.4 2023-02-07
22:41:37		 44.7217 8.133 18 2024-03-01
17:18:15		 Bollettino Sismico Italiano INGV 120431501
Reviewed
Rev100 		ML 1.4 2023-02-07
22:41:37		 44.7253 8.1332 19 2023-02-07
22:53:25		 Sala Sismica INGV-Roma 114238131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-07 22:41:37 ± 0.16
Latitude 44.7217 ± 0.0054
Longitude 8.1330 ± 0.0089
Depth (km) 18 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 120431501

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 624
Semi-minor axis of confidence ellipse (meter) 348
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 233
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 23
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) 0.75453
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 120431501
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-08-24 07:09:49

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 114238131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-07 22:53:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TRIF.CHZ. 2023-02-07T22:42:54.99 3.0 undecidable manual Sg 0.82 0
IV.PE3.EHZ. 2023-02-07T22:42:32.59 3.0 negative manual Pn 1.8 0
GU.STV.HHZ. 2023-02-07T22:42:01.97 0.3 undecidable manual S 231 82.8504 96 -0.06 67
GU.ENR.HHZ. 2023-02-07T22:42:01.15 0.6 undecidable manual S 226 78.6657 96 0.25 44
GU.PZZ.HHZ. 2023-02-07T22:42:01.85 0.3 undecidable manual S 254 83.7495 96 -0.42 62
GU.BHB.HHZ. 2023-02-07T22:41:57.76 0.3 undecidable manual S 281 69.6747 97 -0.76 56
GU.RORO.HHZ. 2023-02-07T22:41:57.72 0.6 undecidable manual S 184 67.7766 98 -0.3 43
GU.CANO.HHZ. 2023-02-07T22:41:55.17 0.3 undecidable manual S 172 57.5979 99 -0.17 68
GU.GBOS.HHZ. 2023-02-07T22:41:55.25 0.3 undecidable manual S 204 58.0974 99 -0.21 68
IV.MONC.HHZ. 2023-02-07T22:41:52.15 0.6 undecidable manual S 338 42.3243 104 0.82 40
GU.STV.HHZ. 2023-02-07T22:41:52.39 0.1 undecidable manual P 231 82.8504 96 0.8 75
IV.QLNO.HHZ. 2023-02-07T22:41:52.48 0.3 undecidable manual S 159 47.2194 102 -0.12 70
GU.ENR.HHZ. 2023-02-07T22:41:51.62 0.3 undecidable manual P 226 78.6657 96 0.67 59
GU.PZZ.HHZ. 2023-02-07T22:41:51.80 0.1 undecidable manual P 254 83.7495 96 0.06 91
GU.RSP.HHE. 2023-02-07T22:41:50.90 0.3 undecidable manual P 305 82.9503 96 -0.71 55
GU.RORO.HHZ. 2023-02-07T22:41:49.44 0.1 undecidable manual P 184 67.7766 98 0.16 92
GU.PCP.HHZ. 2023-02-07T22:41:49.67 0.3 undecidable manual S 121 38.2284 106 -0.6 62
GU.BHB.HHZ. 2023-02-07T22:41:49.38 0.1 undecidable manual P 281 69.6747 97 -0.19 89
GU.GBOS.HHZ. 2023-02-07T22:41:48.13 0.1 undecidable manual P 204 58.0974 99 0.33 90
GU.CANO.HHZ. 2023-02-07T22:41:47.89 0.1 undecidable manual P 172 57.5979 99 0.16 94
GU.ROTM.HHZ. 2023-02-07T22:41:46.45 0.6 undecidable manual S 51 22.3554 120 0.11 51
IV.QLNO.HHZ. 2023-02-07T22:41:46.37 0.1 undecidable manual P 159 47.2194 102 0.22 95
IV.MONC.HHZ. 2023-02-07T22:41:45.33 0.3 undecidable manual P 338 42.3243 104 -0.09 72
GU.PCP.HHZ. 2023-02-07T22:41:44.64 0.1 undecidable manual P 121 38.2284 106 -0.17 94
GU.ROTM.HHZ. 2023-02-07T22:41:42.52 0.1 negative manual P 51 22.3554 120 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.ROTM.HHN. ML:1.8 0.0003800984 0.1408 AML other m 2023-02-07T22:41:46.61
GU.ROTM.HHE. ML:1.9 0.000400590885 0.1152 AML other m 2023-02-07T22:41:46.82
GU.PCP.HHE. ML:1.2 0.00004927598 0.1792 AML other m 2023-02-07T22:41:50.05
GU.PCP.HHN. ML:1.1 0.0000455176 0.2432 AML other m 2023-02-07T22:41:51.69
IV.MONC.HHN. ML:1.5 0.00008687266000000001 0.1792 AML other m 2023-02-07T22:41:52.52
IV.QLNO.HHE. ML:1.3 0.000055324525 0.2176 AML other m 2023-02-07T22:41:52.93
IV.QLNO.HHN. ML:1.4 0.00005808853 0.192 AML other m 2023-02-07T22:41:53.33
IV.MONC.HHE. ML:1.4 0.00007994372000000001 0.1408 AML other m 2023-02-07T22:41:53.92
GU.CANO.HHN. ML:1.7 0.00010856046 1.808 AML other m 2023-02-07T22:41:56.02
GU.GBOS.HHE. ML:1.1 0.0000254922 0.1408 AML other m 2023-02-07T22:41:56.51
GU.CANO.HHE. ML:1.7 0.00009651046500000001 0.2432 AML other m 2023-02-07T22:41:56.66
GU.GBOS.HHN. ML:1.2 0.0000277318115 0.1408 AML other m 2023-02-07T22:41:56.98
GU.RORO.HHE. ML:1.2 0.0000302198269 0.1408 AML other m 2023-02-07T22:41:59.09
GU.BHB.HHN. ML:1.3 0.000034080745000000004 0.2304 AML other m 2023-02-07T22:41:59.30
GU.BHB.HNN. ML:1.3 0.00003240376000000001 0.192 AML other m 2023-02-07T22:41:59.29
GU.RORO.HHN. ML:1.2 0.000030195125 0.1792 AML other m 2023-02-07T22:41:59.79
GU.BHB.HNE. ML:1.3 0.000033730825 0.192 AML other m 2023-02-07T22:41:59.78
GU.BHB.HHE. ML:1.3 0.000033837969999999995 0.1664 AML other m 2023-02-07T22:41:59.87
GU.PZZ.HHN. ML:1.7 0.000058013220000000004 0.256 AML other m 2023-02-07T22:42:02.55
GU.ENR.HHN. ML:1.6 0.000050156265 0.0512 AML other m 2023-02-07T22:42:02.69
GU.ENR.HHE. ML:1.6 0.00005862419 0.0512 AML other m 2023-02-07T22:42:02.85
GU.PZZ.HHE. ML:1.6 0.000044857910000000004 0.3968 AML other m 2023-02-07T22:42:03.35
GU.STV.HHE. ML:1.2 0.0000212336315 0.1536 AML other m 2023-02-07T22:42:04.72
GU.STV.HHN. ML:1.2 0.0000186283142 0.256 AML other m 2023-02-07T22:42:07.56
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