Earthquake with magnitude of ML 0.4 on date 22-09-2021 and time 09:12:20 (Italy) in region 2 km N Priola (CN)

A magnitude ML 0.4 earthquake occured in region: 2 km N Priola (CN), on

  • 22-09-2021 07:12:20 (UTC)
  • 22-09-2021 09:12:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.269, 8.025 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
Priola CN 3 701 701
Bagnasco CN 4 1035 1736
Massimino SV 5 113 1849
Viola CN 5 391 2240
Lisio CN 6 201 2441
Battifollo CN 6 219 2660
Scagnello CN 8 194 2854
Garessio CN 8 3244 6098
Calizzano SV 8 1475 7573
Nucetto CN 8 430 8003
Perlo CN 9 116 8119
Pamparato CN 9 302 8421
Monasterolo Casotto CN 10 89 8510
Roburent CN 11 495 9005
Mombasiglio CN 11 609 9614
Bardineto SV 12 756 10370
Murialdo SV 12 841 11211
Castelnuovo di Ceva CN 13 110 11321
Ceva CN 13 5782 17103
Priero CN 13 529 17632
Torre Mondovì CN 14 498 18130
Montaldo di Mondovì CN 14 557 18687
Osiglia SV 14 444 19131
Sale delle Langhe CN 15 486 19617
San Michele Mondovì CN 15 2003 21620
Sale San Giovanni CN 15 183 21803
Montezemolo CN 15 259 22062
Lesegno CN 16 794 22856
Erli SV 16 245 23101
Ormea CN 16 1617 24718
Roascio CN 17 97 24815
Bormida SV 17 387 25202
Nasino SV 17 207 25409
Castelvecchio di Rocca Barbena SV 17 145 25554
Roccavignale SV 17 752 26306
Vicoforte CN 17 3136 29442
Frabosa Soprana CN 17 759 30201
Castelbianco SV 18 330 30531
Caprauna CN 18 104 30635
Alto CN 18 128 30763
Monastero di Vasco CN 18 1297 32060
Millesimo SV 18 3383 35443
Castellino Tanaro CN 18 312 35755
Niella Tanaro CN 18 1046 36801
Torresina CN 18 52 36853
Frabosa Sottana CN 18 1497 38350
Briaglia CN 18 318 38668
Paroldo CN 19 211 38879
Zuccarello SV 19 309 39188
Camerana CN 20 631 39819
Igliano CN 20 74 39893
Saliceto CN 20 1323 41216
Cengio SV 20 3563 44779
Balestrino SV 20 595 45374
Magliolo SV 20 974 46348

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km W of Savona (61345 inhabitants)
40 Km E of Cuneo (56081 inhabitants)
53 Km NE of Sanremo (54807 inhabitants)
72 Km S of Asti (76202 inhabitants)
74 Km W of Genova (586655 inhabitants)
86 Km SW of Alessandria (93943 inhabitants)
86 Km SE of Moncalieri (57294 inhabitants)
94 Km SE of Torino (890529 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.4 2021-09-22
07:12:20
44.2692 8.0247 8 2021-09-22
07:26:58
Sala Sismica INGV-Roma 95727321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-22 07:12:20 ± 0.14
Latitude 44.2692 ± 0.0099
Longitude 8.0247 ± 0.0075
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 95727321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1018
Semi-minor axis of confidence ellipse (meter) 567
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 159
Circular confidence region, given by single value of horizontal uncertainty (meter) 1020
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.69068
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 95727321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-22 07:26:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MPAG.EHZ. 2021-09-22T07:14:17.08 3.0 undecidable manual Sg 12.26 0
IV.SPS2.HHZ. 2021-09-22T07:14:17.07 3.0 positive manual Pn -5.38 0
IV.IST3.HHZ. 2021-09-22T07:14:14.94 3.0 negative manual Pn -3.78 0
OT.OT05.EHZ. 2021-09-22T07:14:14.11 3.0 negative manual Pg 16.889999 0
IV.MTL1.HNZ. 2021-09-22T07:14:03.70 3.0 undecidable manual Sn -7.99 0
IV.NARO.HHZ. 2021-09-22T07:13:55.64 3.0 undecidable manual Sn -6.2 0
IV.TERO.HNZ. 2021-09-22T07:13:45.46 3.0 undecidable manual P 12.49 0
IV.CERA.HHZ. 2021-09-22T07:13:42.73 3.0 negative manual Pn -0.9 0
IV.FERS.HNZ. 2021-09-22T07:13:40.79 3.0 undecidable manual Sn -0.92 0
IV.GAVE.EHZ. 2021-09-22T07:13:38.72 3.0 positive manual P 12.65 0
IV.CSP1.EHZ. 2021-09-22T07:13:38.64 3.0 negative manual P 11.9 0
IV.NRCA.HHZ. 2021-09-22T07:13:37.50 3.0 undecidable manual Pg 10.25 0
IV.MML1.EHZ. 2021-09-22T07:13:37.17 3.0 positive manual Pg 12.73 0
IV.FDMO.HHZ. 2021-09-22T07:13:36.96 3.0 positive manual Pg 11.05 0
IV.MNTV.EHZ. 2021-09-22T07:13:36.69 3.0 undecidable manual Sg 6.17 0
IV.CESI.HHZ. 2021-09-22T07:13:35.46 3.0 undecidable manual Pg 11.09 0
IT.MTCL.HGZ. 2021-09-22T07:13:35.90 3.0 positive manual Pg 10.59 0
IV.ARVD.HHZ. 2021-09-22T07:13:33.14 3.0 undecidable manual Pg 10.65 0
MN.TRI.HHZ. 2021-09-22T07:13:26.46 3.0 undecidable manual Pn -4.31 0
IV.APEC.HHZ. 2021-09-22T07:13:17.75 3.0 negative manual Pn 0.51 0
IV.NARO.HHZ. 2021-09-22T07:13:16.74 3.0 undecidable manual Pn -1.86 0
IV.MILN.HHZ. 2021-09-22T07:13:09.88 3.0 undecidable manual S -2.07 0
CH.DAVOX.HHZ. 2021-09-22T07:13:08.35 3.0 negative manual Pn -0.3 0
IV.IMOL.EHZ. 2021-09-22T07:13:06.18 3.0 positive manual Pn -2.62 0
IV.BAG8.EHZ. 2021-09-22T07:13:04.48 3.0 undecidable manual Pg 1.91 0
IV.CAVE.HHZ. 2021-09-22T07:13:01.83 3.0 positive manual Pn -0.2 0
GU.LSD.HHZ. 2021-09-22T07:12:45.00 3.0 positive manual P -1.98 0
GU.PCP.HHZ. 2021-09-22T07:12:37.50 0.6 undecidable manual S 54 0.4605 50 0.42 45
GU.STV.HHZ. 2021-09-22T07:12:37.87 0.6 undecidable manual S 267 0.5 50 -0.38 45
GU.ENR.HHZ. 2021-09-22T07:12:36.53 0.6 undecidable manual S 265 0.4362 50 0.19 47
GU.PZZ.HHE. 2021-09-22T07:12:34.39 1.0 undecidable manual P 290 0.6907 50 0.45 21
GU.STV.HHZ. 2021-09-22T07:12:31.51 1.0 negative manual P 267 0.5 50 0.83 19
GU.PCP.HHZ. 2021-09-22T07:12:30.49 0.6 negative manual P 54 0.4605 50 0.49 44
GU.ENR.HHZ. 2021-09-22T07:12:29.69 0.3 negative manual P 265 0.4362 50 0.12 72
IV.QLNO.HHZ. 2021-09-22T07:12:29.25 0.6 undecidable manual S 76 0.2365 107 -0.61 44
GU.IMI.HHE. 2021-09-22T07:12:28.47 0.1 undecidable manual P 195 0.3705 50 0.01 99
FR.SAOF.HHE.00 2021-09-22T07:12:28.82 0.1 undecidable manual P 230 0.4407 50 -0.84 77
GU.CANO.HHZ. 2021-09-22T07:12:27.31 0.3 undecidable manual S 112 0.1646 114 0.06 77
GU.RORO.HHZ. 2021-09-22T07:12:27.32 0.3 undecidable manual S 169 0.1592 115 0.24 74
GU.GBOS.HHZ. 2021-09-22T07:12:26.33 0.6 undecidable manual S 258 0.1349 119 0.09 51
IV.QLNO.HHZ. 2021-09-22T07:12:25.57 0.6 positive manual P 76 0.2365 107 -0.26 48
GU.CANO.HHZ. 2021-09-22T07:12:24.12 0.6 undecidable manual P 112 0.1646 114 -0.2 50
GU.RORO.HHZ. 2021-09-22T07:12:24.40 0.1 undecidable manual P 169 0.1592 115 0.17 100
GU.GBOS.HHZ. 2021-09-22T07:12:23.84 1.0 undecidable manual P 258 0.1349 119 0.1 26
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.GBOS.HHE. ML:0 1.2442635E-5 0.1184 AML other m 2021-09-22T07:12:27.21
GU.GBOS.HHN. ML:0.2 1.5682475E-5 0.1408 AML other m 2021-09-22T07:12:26.59
GU.CANO.HHE. ML:0.7 4.6544115E-5 0.7392 AML other m 2021-09-22T07:12:27.69
GU.CANO.HHN. ML:0.6 3.3608367E-5 0.2976 AML other m 2021-09-22T07:12:29.95
IV.QLNO.HHE. ML:0.4 1.66486835E-5 0.24 AML other m 2021-09-22T07:12:29.34
IV.QLNO.HHN. ML:0.2 1.2455462E-5 0.0992 AML other m 2021-09-22T07:12:29.70
GU.ENR.HHE. ML:0.6 8.1896735E-6 0.0992 AML other m 2021-09-22T07:12:37.43
GU.ENR.HHN. ML:0.7 1.28646445E-5 0.0992 AML other m 2021-09-22T07:12:36.99
GU.PCP.HHE. ML:0.3 4.881204E-6 0.5984 AML other m 2021-09-22T07:12:37.67
GU.PCP.HHN. ML:0.6 7.7825715E-6 0.7968 AML other m 2021-09-22T07:12:37.54
GU.STV.HHE. ML:0.3 2.87897555E-6 0.4992 AML other m 2021-09-22T07:12:38.04
GU.STV.HHN. ML:0.3 2.7546015E-6 0.3808 AML other m 2021-09-22T07:12:38.24
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