Earthquake with magnitude of ML 0.3 on date 23-09-2022 and time 09:38:36 (Italy) in region 1 km SW Bagnasco (CN)

A magnitude ML 0.3 earthquake occured in region: 1 km SW Bagnasco (CN), on

  • 23-09-2022 07:38:36 (UTC)
  • 23-09-2022 09:38:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.2920, 8.0330 at 8 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
Bagnasco CN 1 1035 1035
Massimino SV 3 113 1148
Battifollo CN 4 219 1367
Lisio CN 5 201 1568
Priola CN 5 701 2269
Viola CN 5 391 2660
Nucetto CN 6 430 3090
Scagnello CN 6 194 3284
Perlo CN 6 116 3400
Monasterolo Casotto CN 9 89 3489
Calizzano SV 9 1475 4964
Mombasiglio CN 9 609 5573
Pamparato CN 10 302 5875
Castelnuovo di Ceva CN 10 110 5985
Garessio CN 11 3244 9229
Ceva CN 11 5782 15011
Murialdo SV 11 841 15852
Priero CN 11 529 16381
Roburent CN 11 495 16876
Sale delle Langhe CN 12 486 17362
Torre Mondovì CN 13 498 17860
Sale San Giovanni CN 13 183 18043
Montezemolo CN 13 259 18302
Lesegno CN 13 794 19096
Bardineto SV 14 756 19852
Osiglia SV 14 444 20296
Montaldo di Mondovì CN 14 557 20853
San Michele Mondovì CN 14 2003 22856
Roascio CN 14 97 22953
Roccavignale SV 15 752 23705
Torresina CN 16 52 23757
Castellino Tanaro CN 16 312 24069
Paroldo CN 16 211 24280
Millesimo SV 16 3383 27663
Bormida SV 16 387 28050
Vicoforte CN 16 3136 31186
Niella Tanaro CN 16 1046 32232
Camerana CN 17 631 32863
Briaglia CN 17 318 33181
Igliano CN 17 74 33255
Saliceto CN 17 1323 34578
Monastero di Vasco CN 18 1297 35875
Cengio SV 18 3563 39438
Frabosa Soprana CN 18 759 40197
Cigliè CN 18 190 40387
Rocca Cigliè CN 18 142 40529
Erli SV 18 245 40774
Cosseria SV 18 1105 41879
Plodio SV 18 650 42529
Marsaglia CN 18 245 42774
Frabosa Sottana CN 19 1497 44271
Ormea CN 19 1617 45888
Castelvecchio di Rocca Barbena SV 19 145 46033
Nasino SV 20 207 46240
Pallare SV 20 923 47163
Bastia Mondovì CN 20 669 47832
Mondovì CN 20 22484 70316
Mombarcaro CN 20 268 70584

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km W of Savona (61345 inhabitants)
40 Km E of Cuneo (56081 inhabitants)
56 Km NE of Sanremo (54807 inhabitants)
69 Km S of Asti (76202 inhabitants)
73 Km W of Genova (586655 inhabitants)
83 Km SW of Alessandria (93943 inhabitants)
84 Km SE of Moncalieri (57294 inhabitants)
91 Km SE of Torino (890529 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.3 2022-09-23
07:38:36
44.2925 8.0332 8 2022-09-23
07:47:58
Sala Sismica INGV-Roma 110043631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-09-23 07:38:36 ± 0.1
Latitude 44.2925 ± 0.0090
Longitude 8.0332 ± 0.0050
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 110043631

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 931
Semi-minor axis of confidence ellipse (meter) 406
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 169
Circular confidence region, given by single value of horizontal uncertainty (meter) 930.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 180
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.44426
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 110043631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-09-23 07:47:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.TRAV.HHZ. 2022-09-23T07:39:13.28 3.0 undecidable manual S 0 0
GU.ENR.HHZ. 2022-09-23T07:38:52.38 0.6 undecidable manual S 262 0.4443 50 -0.38 44
GU.ENR.HHZ. 2022-09-23T07:38:46.09 0.1 undecidable manual P 262 0.4443 50 0.22 91
IV.QLNO.HHZ. 2022-09-23T07:38:45.34 0.6 undecidable manual S 82 0.2257 108 -0.24 47
GU.CANO.HHZ. 2022-09-23T07:38:43.53 0.3 undecidable manual S 120 0.1691 113 0.01 75
GU.MGRO.HHZ. 2022-09-23T07:38:43.18 0.1 undecidable manual P 213 0.2977 104 -0.07 97
GU.GBOS.HHZ. 2022-09-23T07:38:42.56 0.3 undecidable manual S 250 0.1475 116 -0.2 73
IV.QLNO.HHZ. 2022-09-23T07:38:41.72 0.1 undecidable manual P 82 0.2257 108 0 100
GU.GBOS.HHZ. 2022-09-23T07:38:40.32 0.1 undecidable manual P 250 0.1475 116 0.23 97
GU.RORO.HHE. 2022-09-23T07:38:40.81 0.1 undecidable manual P 172 0.1817 112 0.02 100
GU.CANO.HHZ. 2022-09-23T07:38:40.59 0.1 undecidable manual P 120 0.1691 113 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GBOS.HHE. ML:-0.3 0.000006316615400000001 0.7232 AML other m 2022-09-23T07:38:43.40
GU.GBOS.HHN. ML:0.2 0.000016754595 0.1792 AML other m 2022-09-23T07:38:43.41
GU.CANO.HHE. ML:0.6 0.000028170676999999998 0.32 AML other m 2022-09-23T07:38:43.80
GU.CANO.HHN. ML:0.5 0.000024845209999999998 0.1792 AML other m 2022-09-23T07:38:43.67
IV.QLNO.HHE. ML:0.2 0.0000082368175 0.0768 AML other m 2022-09-23T07:38:46.13
IV.QLNO.HHN. ML:0.0 0.0000012068449999999998 0 AML other m 2022-09-23T07:38:45.66
GU.ENR.HHE. ML:0.3 0.00000606813 0.544 AML other m 2022-09-23T07:38:53.87
GU.ENR.HHN. ML:0.3 0.000005545408 0.096 AML other m 2022-09-23T07:38:53.22
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download