Earthquake with magnitude of ML 1.2 on date 21-01-2022 and time 10:21:16 (Italy) in region 3 km W Merana (AL)

A magnitude ML 1.2 earthquake occured in region: 3 km W Merana (AL), on

  • 21-01-2022 09:21:16 (UTC)
  • 21-01-2022 10:21:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.5120, 8.2580 at 4 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
Merana AL 3 189 189
Serole AT 5 123 312
Piana Crixia SV 5 788 1100
Pezzolo Valle Uzzone CN 6 344 1444
Castelletto Uzzone CN 6 331 1775
Bergolo CN 7 71 1846
Spigno Monferrato AL 7 1050 2896
Dego SV 8 1985 4881
Olmo Gentile AT 8 80 4961
Levice CN 9 231 5192
Mombaldone AT 9 209 5401
Gottasecca CN 9 148 5549
Roccaverano AT 9 399 5948
Prunetto CN 9 451 6399
Cortemilia CN 9 2331 8730
Gorzegno CN 10 304 9034
Torre Bormida CN 10 200 9234
Pareto AL 10 554 9788
Perletto CN 10 292 10080
San Giorgio Scarampi AT 11 122 10202
Denice AL 12 176 10378
Monesiglio CN 12 645 11023
Cravanzana CN 12 411 11434
Mioglia SV 12 526 11960
Cairo Montenotte SV 13 13269 25229
Feisoglio CN 13 316 25545
Giusvalla SV 13 441 25986
Saliceto CN 13 1323 27309
Castino CN 13 483 27792
Bosia CN 13 177 27969
Montechiaro d'Acqui AL 13 560 28529
Camerana CN 14 631 29160
Malvicino AL 14 85 29245
Niella Belbo CN 14 372 29617
Arguello CN 14 199 29816
Vesime AT 14 622 30438
Cengio SV 14 3563 34001
Cerretto Langhe CN 14 442 34443
Mombarcaro CN 15 268 34711
Cessole AT 15 403 35114
Rocchetta Belbo CN 15 167 35281
Ponti AL 16 606 35887
Borgomale CN 16 381 36268
Cartosio AL 16 747 37015
Bossolasco CN 16 679 37694
Pontinvrea SV 16 847 38541
San Benedetto Belbo CN 16 179 38720
Cosseria SV 16 1105 39825
Monastero Bormida AT 16 931 40756
Lequio Berria CN 16 487 41243
Castelletto d'Erro AL 17 148 41391
Millesimo SV 17 3383 44774
Serravalle Langhe CN 17 315 45089
Plodio SV 17 650 45739
Bubbio AT 17 893 46632
Paroldo CN 17 211 46843
Carcare SV 17 5587 52430
Roccavignale SV 17 752 53182
Montezemolo CN 17 259 53441
Loazzolo AT 18 359 53800
Benevello CN 18 474 54274
Albaretto della Torre CN 18 242 54516
Cossano Belbo CN 18 958 55474
Ponzone AL 18 1051 56525
Sessame AT 19 271 56796
Sale delle Langhe CN 19 486 57282
Sassello SV 19 1777 59059
Cissone CN 19 85 59144
Sale San Giovanni CN 19 183 59327
Bistagno AL 19 1887 61214
Bonvicino CN 19 92 61306
Murazzano CN 19 834 62140
Somano CN 20 356 62496
Torresina CN 20 52 62548
Priero CN 20 529 63077
Cassinasco AT 20 611 63688
Melazzo AL 20 1325 65013

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km NW of Savona (61345 inhabitants)
43 Km S of Asti (76202 inhabitants)
53 Km SW of Alessandria (93943 inhabitants)
55 Km W of Genova (586655 inhabitants)
58 Km E of Cuneo (56081 inhabitants)
71 Km SE of Moncalieri (57294 inhabitants)
77 Km SE of Torino (890529 inhabitants)
86 Km NE of Sanremo (54807 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 1.2 2022-01-21
09:21:16
44.5123 8.2583 4 2022-01-21
09:30:09
Sala Sismica INGV-Roma 100008801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-21 09:21:16 ± 0.22
Latitude 44.5123 ± 0.0108
Longitude 8.2583 ± 0.0164
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 100008801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1364
Semi-minor axis of confidence ellipse (meter) 819
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 129
Circular confidence region, given by single value of horizontal uncertainty (meter) 1360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.77791
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 100008801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-21 09:30:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHZ. 2022-01-21T09:23:11.28 3.0 undecidable manual Sn -0.68 0
MN.TRI.HHZ. 2022-01-21T09:23:10.30 3.0 undecidable manual Sn -2.19 0
IV.MTGR.HHZ. 2022-01-21T09:23:07.70 3.0 undecidable manual Pn 0.02 0
IV.CMPR.HHZ. 2022-01-21T09:22:57.13 3.0 undecidable manual Pn -0.75 0
IV.CPOZ.HHZ. 2022-01-21T09:22:54.71 3.0 negative manual Pg 10.73 0
IV.CRND.HNZ. 2022-01-21T09:22:45.25 3.0 undecidable manual Sn -0.03 0
IV.TEOL.HHZ. 2022-01-21T09:22:38.98 3.0 undecidable manual Sg 3.37 0
IV.RM33.HNZ. 2022-01-21T09:22:36.98 3.0 undecidable manual Pg 14.28 0
MN.TRI.HHZ. 2022-01-21T09:22:31.05 3.0 negative manual Pg 8.79 0
IV.CELB.HHZ. 2022-01-21T09:22:25.99 3.0 undecidable manual Sn -1.29 0
IV.PP3.EHZ. 2022-01-21T09:22:19.18 3.0 negative manual Pn -2.31 0
IT.FOPC.HGZ. 2022-01-21T09:22:17.16 3.0 undecidable manual Pn 2.03 0
IV.PE3.EHZ. 2022-01-21T09:22:11.35 3.0 negative manual Pn 1.78 0
IV.APEC.HHZ. 2022-01-21T09:22:10.21 3.0 negative manual Pn 0.81 0
IV.TEOL.HHZ. 2022-01-21T09:22:02.12 3.0 undecidable manual Pn 0.58 0
GU.GSCL.HHZ. 2022-01-21T09:21:49.06 3.0 undecidable manual Pg -0.19 0
GU.BHB.HHZ. 2022-01-21T09:21:42.91 0.6 undecidable manual S 295 0.7779 50 -0.34 43
GU.STV.HHZ. 2022-01-21T09:21:40.76 0.6 undecidable manual S 248 0.7177 50 -0.71 38
GU.ENR.HHZ. 2022-01-21T09:21:39.71 0.6 undecidable manual S 245 0.6637 50 -0.16 46
GU.MGRO.HHZ. 2022-01-21T09:21:36.77 0.3 undecidable manual S 215 0.5693 50 -0.31 68
GU.BHB.HHZ. 2022-01-21T09:21:32.30 0.6 negative manual P 295 0.7779 50 0.45 42
GU.GBOS.HHZ. 2022-01-21T09:21:31.30 0.3 undecidable manual S 228 0.4029 96 -0.58 64
GU.RORO.HHZ. 2022-01-21T09:21:31.82 0.3 undecidable manual S 199 0.4227 95 -0.8 58
GU.STV.HHZ. 2022-01-21T09:21:31.47 0.6 undecidable manual P 248 0.7177 50 0.65 40
GU.ENR.HHZ. 2022-01-21T09:21:30.15 0.6 undecidable manual P 245 0.6637 50 0.25 45
IV.MONC.HHE. 2022-01-21T09:21:29.68 0.6 undecidable manual P 337 0.6079 50 0.72 40
GU.MGRO.HHZ. 2022-01-21T09:21:28.62 0.3 undecidable manual P 215 0.5693 50 0.33 68
GU.CANO.HHZ. 2022-01-21T09:21:28.13 0.3 undecidable manual S 183 0.3049 97 0 76
GU.GBOS.HHZ. 2022-01-21T09:21:25.54 0.3 undecidable manual P 228 0.4029 96 0.25 72
GU.RORO.HHZ. 2022-01-21T09:21:25.55 0.6 positive manual P 199 0.4227 95 -0.16 48
IV.QLNO.HHZ. 2022-01-21T09:21:24.89 0.6 undecidable manual S 162 0.1979 101 0.83 41
GU.CANO.HHZ. 2022-01-21T09:21:23.43 0.1 positive manual P 183 0.3049 97 0.31 97
GU.PCP.HHZ. 2022-01-21T09:21:23.52 0.3 undecidable manual S 82 0.2068 101 -0.86 62
IV.QLNO.HHZ. 2022-01-21T09:21:21.58 0.3 undecidable manual P 162 0.1979 101 0.81 63
GU.PCP.HHZ. 2022-01-21T09:21:20.72 0.1 positive manual P 82 0.2068 101 -0.24 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.PCP.HHN. ML:0.0 0.000055300995000000004 0.224 AML other m 2022-01-21T09:21:23.47
GU.PCP.HHE. ML:0.0 0.000041968869999999995 0.1984 AML other m 2022-01-21T09:21:23.80
GU.MGRO.HNN. ML:2.0 0.00018175 1.36 AML other m 2022-01-21T09:21:41.09
GU.MGRO.HNE. ML:2.0 0.0002178572435 1.2864 AML other m 2022-01-21T09:21:41.06
GU.CANO.HHE. ML:1.4 0.00010470675 0.6784 AML other m 2022-01-21T09:21:29.54
GU.CANO.HHN. ML:1.5 0.00014453405 0.2368 AML other m 2022-01-21T09:21:29.66
GU.GBOS.HHE. ML:0.8 0.000017586087999999998 0.1024 AML other m 2022-01-21T09:21:32.35
GU.GBOS.HHN. ML:0.8 0.000017879100000000003 0.0768 AML other m 2022-01-21T09:21:32.38
GU.RORO.HHE. ML:2.3 0.0005942586000000001 1.0816 AML other m 2022-01-21T09:21:30.21
GU.RORO.HHN. ML:0.8 0.000021499440000000002 0.1408 AML other m 2022-01-21T09:21:32.57
GU.MGRO.HHE. ML:1.2 0.000031600420000000005 1.7792 AML other m 2022-01-21T09:21:38.64
GU.MGRO.HHN. ML:1.2 0.000031710445000000004 1.1392 AML other m 2022-01-21T09:21:38.28
GU.ENR.HHE. ML:1.2 0.000026046679999999998 0.064 AML other m 2022-01-21T09:21:42.61
GU.ENR.HHN. ML:1.1 0.000022246235 0.1408 AML other m 2022-01-21T09:21:42.69
GU.STV.HHE. ML:1.4 0.000033965564999999996 3.4624 AML other m 2022-01-21T09:21:42.07
GU.STV.HHN. ML:1.2 0.000024907315 3.0208 AML other m 2022-01-21T09:21:40.76
GU.BHB.HHE. ML:0.9 0.000011196950000000001 0.1024 AML other m 2022-01-21T09:21:43.90
GU.BHB.HHN. ML:1.2 0.000021008180000000002 3.5392 AML other m 2022-01-21T09:21:45.45
GU.BHB.HNE. ML:1.4 0.0000312254885 0.9024 AML other m 2022-01-21T09:21:48.49
GU.BHB.HNN. ML:1.4 0.000028417435000000002 0.8192 AML other m 2022-01-21T09:21:35.38
GU.GSCL.HHE. ML:1.6 0.000017239678 0.4992 AML other m 2022-01-21T09:22:16.60
GU.GSCL.HHN. ML:1.9 0.00002653116 0.5632 AML other m 2022-01-21T09:21:56.57
IV.TEOL.HHE. ML:2.9 0.000102733745 0.0384 AML other m 2022-01-21T09:22:42.84
IV.TEOL.HHN. ML:3.1 0.0001754252 0.0576 AML other m 2022-01-21T09:22:42.86
IV.APEC.HHE. ML:2.6 0.000033735305 0.0768 AML other m 2022-01-21T09:23:23.38
IV.APEC.HHN. ML:2.7 0.00003995025 0.0768 AML other m 2022-01-21T09:22:20.92
IV.APEC.HNE. ML:4.0 0.0009742326 1.2992 AML other m 2022-01-21T09:22:56.57
IV.APEC.HNN. ML:4.8 0.00519154 0.8896 AML other m 2022-01-21T09:22:41.69
IV.PE3.EHE. ML:2.5 0.000027343695 0.0576 AML other m 2022-01-21T09:22:37.82
IV.PE3.EHN. ML:2.7 0.00004150444 0.6784 AML other m 2022-01-21T09:23:02.00
IT.FOPC.HGE. ML:5.6 0.026653475 0.0512 AML other m 2022-01-21T09:22:46.01
IT.FOPC.HGN. ML:5.8 0.033602875 0.0512 AML other m 2022-01-21T09:22:42.92
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