Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 29-08-2021 and time 01:05:13 (UTC) in region 1 km SW Casella (GE)

A magnitude ML 2.1 earthquake occured in region: 1 km SW Casella (GE), on

  • 29-08-2021 01:05:13 (UTC)
  • 29-08-2021 03:05:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.5280, 8.9880 at 11 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
Casella GE 1 3144 3144
Savignone GE 4 3205 6349
Serra Riccò GE 5 7885 14234
Montoggio GE 5 2067 16301
Sant'Olcese GE 5 5906 22207
Mignanego GE 6 3675 25882
Busalla GE 6 5563 31445
Valbrevenna GE 7 798 32243
Crocefieschi GE 7 548 32791
Ceranesi GE 8 3875 36666
Campomorone GE 8 6996 43662
Vobbia GE 9 409 44071
Ronco Scrivia GE 9 4417 48488
Davagna GE 11 1884 50372
Fraconalto AL 11 336 50708
Bargagli GE 12 2708 53416
Isola del Cantone GE 13 1540 54956
Torriglia GE 14 2311 57267
Genova GE 14 586655 643922
Mongiardino Ligure AL 14 165 644087
Lumarzo GE 15 1535 645622
Voltaggio AL 15 738 646360
Propata GE 16 142 646502
Roccaforte Ligure AL 17 136 646638
Bogliasco GE 18 4488 651126
Neirone GE 18 916 652042
Carrega Ligure AL 18 84 652126
Cabella Ligure AL 18 528 652654
Rondanina GE 19 62 652716
Pieve Ligure GE 19 2544 655260
Uscio GE 19 2284 657544
Grondona AL 19 510 658054
Carrosio AL 19 510 658564
Sori GE 20 4205 662769
Arquata Scrivia AL 20 6409 669178

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NE of Genova (586655 inhabitants)
47 Km NE of Savona (61345 inhabitants)
52 Km SE of Alessandria (93943 inhabitants)
74 Km SE of Asti (76202 inhabitants)
74 Km S of Pavia (72576 inhabitants)
81 Km SW of Piacenza (102191 inhabitants)
82 Km NW of La Spezia (93959 inhabitants)
88 Km S of Vigevano (63310 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 2.1 2021-08-29
01:05:13		 44.5283 8.9885 11 2021-12-29
11:12:28		 Bollettino Sismico Italiano INGV 95197461
Reviewed
Rev100 		ML 2.1 2021-08-29
01:05:13		 44.5397 8.9888 10 2021-08-29
01:16:59		 Sala Sismica INGV-Roma 94771571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-29 01:05:13 ± 0.1
Latitude 44.5283 ± 0.0063
Longitude 8.9885 ± 0.0050
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95197461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 654
Semi-minor axis of confidence ellipse (meter) 428
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 177
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.39395
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 47
Type of magnitude ML
Reference to an origin 95197461
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-12-13 16:49:01

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 47
Type of magnitude ML
Reference to an origin 94771571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-29 01:16:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LAV9.HHZ. 2021-08-29T01:07:03.50 3.0 undecidable manual Sn 2.58 0
IV.ATFO.HHZ. 2021-08-29T01:06:42.16 3.0 undecidable manual Sg 8.17 0
IV.TST01.HHZ. 2021-08-29T01:06:39.33 3.0 positive manual P 1.246 0
IV.TERO.HNZ. 2021-08-29T01:06:26.89 3.0 undecidable manual P 1.345 0
GU.TRAV.HHZ. 2021-08-29T01:05:55.80 0.6 undecidable manual S 319 146.3424 50 0.45 36
GU.ENR.HHZ. 2021-08-29T01:05:50.60 0.6 undecidable manual S 256 128.871 50 -0.09 40
GU.MGRO.HHZ. 2021-08-29T01:05:45.80 0.6 undecidable manual S 241 108.114 50 0.64 36
GU.EQUI.HHZ. 2021-08-29T01:05:42.80 0.6 undecidable manual S 113 100.7214 50 -0.39 40
GU.GBOS.HHZ. 2021-08-29T01:05:41.70 0.6 undecidable manual S 251 96.4257 50 -0.35 41
IV.SGAL.EHZ. 2021-08-29T01:05:40.83 1.0 undecidable manual P 42 154.7229 50 1.74 9
GU.RORO.HHZ. 2021-08-29T01:05:39.50 0.6 undecidable manual S 238 86.4468 50 0.12 43
IV.PLMA.HHZ. 2021-08-29T01:05:39.20 0.6 undecidable manual S 127 86.8464 50 -0.28 42
GU.POPM.HHZ. 2021-08-29T01:05:39.70 0.3 undecidable manual P 110 150.3384 50 1.28 37
IV.PII.HHZ. 2021-08-29T01:05:38.59 0.6 undecidable manual P 126 151.5372 50 -0.02 38
GU.TRAV.HHZ. 2021-08-29T01:05:37.88 0.6 undecidable manual P 319 146.3424 50 0.08 39
GU.MAIM.HHZ. 2021-08-29T01:05:37.27 0.3 undecidable manual P 119 137.5623 50 0.81 48
GU.BHB.HHZ. 2021-08-29T01:05:36.93 0.3 undecidable manual P 285 140.2485 50 0.06 59
GU.STV.HHZ. 2021-08-29T01:05:36.36 1.0 undecidable manual P 257 135.4644 50 0.23 19
GU.ENR.HHZ. 2021-08-29T01:05:35.12 0.3 undecidable manual P 256 128.871 50 0.01 61
GU.CANO.HHZ. 2021-08-29T01:05:34.70 0.6 undecidable manual S 239 69.375 50 -0.12 45
GU.ROTM.HHZ. 2021-08-29T01:05:33.50 0.6 undecidable manual S 306 61.494 50 0.77 38
GU.MGRO.HHZ. 2021-08-29T01:05:32.05 0.6 undecidable manual P 241 108.114 50 0.14 41
IV.QLNO.HHZ. 2021-08-29T01:05:31.57 0.6 undecidable manual S 246 55.6998 50 0.4 43
GU.EQUI.HHZ. 2021-08-29T01:05:31.26 0.3 undecidable manual P 113 100.7214 50 0.48 59
GU.GBOS.HHZ. 2021-08-29T01:05:30.05 0.3 undecidable manual P 251 96.4257 50 -0.07 64
IV.PLMA.HHZ. 2021-08-29T01:05:29.20 0.3 undecidable manual P 127 86.8464 50 0.57 58
GU.GRAM.HHZ. 2021-08-29T01:05:28.71 0.3 undecidable manual P 92 85.248 50 0.32 63
IV.BOB.HHE. 2021-08-29T01:05:28.30 0.6 undecidable manual S 54 44.9217 50 0 48
GU.RORO.HHZ. 2021-08-29T01:05:28.48 0.3 undecidable manual P 238 86.4468 50 -0.1 65
IV.MSSA.HHZ. 2021-08-29T01:05:28.80 0.6 undecidable manual S 119 48.0186 50 -0.33 45
IV.SARZ.HHZ. 2021-08-29T01:05:26.97 0.6 undecidable manual S 351 38.0286 50 0.51 44
GU.CANO.HHZ. 2021-08-29T01:05:25.75 0.3 undecidable manual P 239 69.375 50 -0.2 66
GU.PCP.HHZ. 2021-08-29T01:05:25.04 0.6 undecidable manual S 273 35.0427 50 -0.62 42
GU.ROTM.HHZ. 2021-08-29T01:05:24.72 0.1 undecidable manual P 306 61.494 50 -0.01 93
IV.QLNO.HHZ. 2021-08-29T01:05:23.53 0.3 undecidable manual P 246 55.6998 50 -0.31 66
GU.GORR.HHZ. 2021-08-29T01:05:22.20 0.6 undecidable manual S 70 25.5522 50 -0.93 37
IV.MSSA.HHZ. 2021-08-29T01:05:22.59 0.3 undecidable manual P 119 48.0186 50 -0.07 71
IV.SARZ.HHZ. 2021-08-29T01:05:21.15 0.3 undecidable manual P 351 38.0286 50 0.03 72
IV.BOB.HHE. 2021-08-29T01:05:21.99 0.3 undecidable manual P 54 44.9217 50 -0.19 69
GU.GENL.EHZ. 2021-08-29T01:05:20.10 0.6 undecidable manual S 186 13.6752 129 0.2 49
IT.GNV.HGZ. 2021-08-29T01:05:19.50 0.6 undecidable manual S 203 11.5773 133 0.14 49
GU.PCP.HHZ. 2021-08-29T01:05:19.93 0.1 undecidable manual P 273 35.0427 50 -0.73 80
GU.RNCA.HHZ. 2021-08-29T01:05:18.20 0.6 undecidable manual S 205 6.993 147 -0.13 50
GU.GORR.HHZ. 2021-08-29T01:05:18.41 0.1 undecidable manual P 70 25.5522 50 -0.78 80
GU.GENL.EHZ. 2021-08-29T01:05:17.40 0.1 undecidable manual P 186 13.6752 129 0.07 100
IT.GNV.HGZ. 2021-08-29T01:05:17.02 0.3 undecidable manual P 203 11.5773 133 0 76
GU.RNCA.HHZ. 2021-08-29T01:05:16.21 0.1 undecidable manual P 205 6.993 147 -0.21 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.RNCA.HHN. ML:2.1 0.0018416090000000001 0.16 AML other m 2021-08-29T01:05:18.70
GU.RNCA.HHE. ML:2.2 0.002045 0.14 AML other m 2021-08-29T01:05:18.84
GU.GENL.EHE. ML:1.9 0.00089436855 0.2 AML other m 2021-08-29T01:05:20.55
GU.GENL.EHN. ML:2.1 0.0013046474999999999 0.14 AML other m 2021-08-29T01:05:21.29
GU.GORR.HHN. ML:2.6 0.002025 0.52 AML other m 2021-08-29T01:05:22.52
GU.GORR.HHE. ML:2.6 0.002303247 0.28 AML other m 2021-08-29T01:05:23.28
GU.PCP.HHE. ML:1.7 0.0001834432 0.26 AML other m 2021-08-29T01:05:26.98
GU.PCP.HHN. ML:1.7 0.00020400000000000003 0.4 AML other m 2021-08-29T01:05:26.66
IV.SARZ.HNN. ML:2.4 0.00102551135 0.26 AML other m 2021-08-29T01:05:29.81
IV.SARZ.HHN. ML:2.4 0.00104595455 0.26 AML other m 2021-08-29T01:05:29.81
IV.MSSA.HHE. ML:2.7 0.001495 0.1 AML other m 2021-08-29T01:05:29.91
IV.MSSA.HHN. ML:2.7 0.001265 1.9 AML other m 2021-08-29T01:05:29.99
IV.SARZ.HNE. ML:2.5 0.00125786315 0.34 AML other m 2021-08-29T01:05:31.25
IV.SARZ.HHE. ML:2.5 0.00129714635 0.34 AML other m 2021-08-29T01:05:31.25
IV.QLNO.HHN. ML:1.9 0.00016339215000000002 0.16 AML other m 2021-08-29T01:05:34.85
IV.QLNO.HHE. ML:1.8 0.0001525104 0.2 AML other m 2021-08-29T01:05:34.81
GU.CANO.HHN. ML:2.3 0.000364 0.84 AML other m 2021-08-29T01:05:37.57
GU.ROTM.HHE. ML:2.4 0.0005204607500000001 0.34 AML other m 2021-08-29T01:05:37.93
GU.CANO.HHE. ML:2.2 0.00024467624999999996 0.4 AML other m 2021-08-29T01:05:39.18
IV.PLMA.HHN. ML:2.2 0.00017299999999999998 0.22 AML other m 2021-08-29T01:05:41.69
GU.RORO.HHN. ML:2.0 0.00013200668500000002 1.68 AML other m 2021-08-29T01:05:41.90
IV.PLMA.HHE. ML:2.1 0.00017050000000000002 0.38 AML other m 2021-08-29T01:05:42.71
GU.GBOS.HHN. ML:2.0 0.00011649999999999999 0.4 AML other m 2021-08-29T01:05:45.47
GU.GRAM.HHE. ML:2.2 0.0001795 0.3 AML other m 2021-08-29T01:05:45.47
GU.GRAM.HHN. ML:2.0 0.000135808375 0.36 AML other m 2021-08-29T01:05:45.35
GU.EQUI.HHE. ML:1.9 0.000086718165 0.36 AML other m 2021-08-29T01:05:45.43
GU.ROTM.HHN. ML:2.5 0.0006475 0.38 AML other m 2021-08-29T01:05:46.42
GU.EQUI.HHN. ML:2.1 0.000122 0.34 AML other m 2021-08-29T01:05:46.43
GU.GBOS.HHE. ML:1.7 0.0000518 1.24 AML other m 2021-08-29T01:05:46.09
GU.MGRO.HHN. ML:2.0 0.000096492015 1.74 AML other m 2021-08-29T01:05:49.07
GU.MGRO.HHE. ML:1.9 0.00007635 1.48 AML other m 2021-08-29T01:05:51.14
GU.ENR.HHN. ML:2.0 0.00006246284 1.64 AML other m 2021-08-29T01:05:53.90
GU.MAIM.HHE. ML:1.9 0.00004835 1.3 AML other m 2021-08-29T01:05:55.34
GU.MAIM.HHN. ML:2.1 0.00007387793 0.24 AML other m 2021-08-29T01:05:56.61
GU.STV.HHN. ML:1.7 0.000029498255 0.3 AML other m 2021-08-29T01:05:56.83
GU.ENR.HHE. ML:1.8 0.00004596747 0.4 AML other m 2021-08-29T01:05:57.54
GU.BHB.HNN. ML:1.8 0.000037499199999999995 0.4704 AML other m 2021-08-29T01:05:57.47
GU.BHB.HHE. ML:1.8 0.00003895 0.48 AML other m 2021-08-29T01:05:57.98
GU.TRAV.HHE. ML:2.3 0.00011195710999999999 0.46 AML other m 2021-08-29T01:05:58.03
GU.TRAV.HHN. ML:2.2 0.00008715 0.26 AML other m 2021-08-29T01:05:58.53
GU.STV.HHE. ML:1.6 0.000027 0.52 AML other m 2021-08-29T01:05:58.86
GU.BHB.HHN. ML:1.7 0.000032474395 0.28 AML other m 2021-08-29T01:05:58.84
GU.BHB.HNE. ML:1.9 0.00004721391499999999 0.6696 AML other m 2021-08-29T01:05:59.41
GU.POPM.HHE. ML:2.4 0.00013450000000000002 0.36 AML other m 2021-08-29T01:05:59.66
IV.PII.HHN. ML:2.2 0.00008054999999999999 0.32 AML other m 2021-08-29T01:06:00.29
GU.POPM.HHN. ML:2.4 0.000126 0.22 AML other m 2021-08-29T01:06:00.61
IV.PII.HHE. ML:2.1 0.00006470000000000001 1.24 AML other m 2021-08-29T01:06:05.07
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