Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 28-08-2020 and time 22:46:19 (UTC) in region 4 km NW Lariano (RM)

A magnitude ML 2.2 earthquake occured in region: 4 km NW Lariano (RM), on

  • 28-08-2020 22:46:19 (UTC)
  • 29-08-2020 00:46:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7540, 12.8040 at 9 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
Lariano RM 4 13432 13432
Rocca Priora RM 6 11962 25394
San Cesareo RM 8 15153 40547
Velletri RM 8 53303 93850
Labico RM 8 6379 100229
Rocca di Papa RM 8 17034 117263
Nemi RM 8 1943 119206
Monte Compatri RM 8 11978 131184
Artena RM 10 14276 145460
Zagarolo RM 10 17843 163303
Valmontone RM 10 15959 179262
Monte Porzio Catone RM 10 8693 187955
Colonna RM 10 4287 192242
Genzano di Roma RM 11 23970 216212
Ariccia RM 12 19407 235619
Lanuvio RM 12 13632 249251
Frascati RM 12 22087 271338
Grottaferrata RM 12 20327 291665
Palestrina RM 12 21672 313337
Marino RM 12 43026 356363
Albano Laziale RM 12 41715 398078
Castel Gandolfo RM 13 8997 407075
Rocca Massima LT 13 1136 408211
Cave RM 13 11287 419498
Castel San Pietro Romano RM 13 902 420400
Gallicano nel Lazio RM 13 6334 426734
Cori LT 15 11065 437799
Rocca di Cave RM 16 377 438176
Genazzano RM 17 6036 444212
Poli RM 17 2418 446630
Colleferro RM 17 21595 468225
Capranica Prenestina RM 17 351 468576
Ciampino RM 18 38412 506988
Cisterna di Latina LT 18 36868 543856
Casape RM 18 744 544600
San Gregorio da Sassola RM 19 1619 546219
Segni RM 20 9159 555378

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km N of Velletri (53303 inhabitants)
22 Km NE of Aprilia (73446 inhabitants)
23 Km S of Tivoli (56533 inhabitants)
27 Km E of Pomezia (62966 inhabitants)
28 Km S of Guidonia Montecelio (88673 inhabitants)
31 Km SE of Roma (2864731 inhabitants)
33 Km N of Latina (125985 inhabitants)
37 Km NE of Anzio (54211 inhabitants)
47 Km E of Fiumicino (78395 inhabitants)
83 Km SW of L'Aquila (69753 inhabitants)
91 Km S of Terni (111501 inhabitants)
92 Km E of Civitavecchia (52991 inhabitants)
94 Km SE of Viterbo (67173 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 2.2 2020-08-28
22:46:19		 41.7538 12.8037 9 2020-11-19
12:37:04		 Bollettino Sismico Italiano INGV 83848081
Reviewed
Rev100 		ML 2.1 2020-08-28
22:46:19		 41.757 12.7992 11 2020-08-28
23:02:11		 Sala Sismica INGV-Roma 82421891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-28 22:46:19 ± 0.06
Latitude 41.7538 ± 0.0045
Longitude 12.8037 ± 0.0048
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 83848081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 506
Semi-minor axis of confidence ellipse (meter) 435
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 216
Circular confidence region, given by single value of horizontal uncertainty (meter) 510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 57
Number of defining phases 55
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 3.44170
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 36
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 83848081
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-17 03:01:12

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 82421891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-28 23:02:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CET2.HHZ. 2020-08-28T22:47:47.99 3.0 undecidable manual Sn -1.79 0
IV.CPGN.EHZ. 2020-08-28T22:47:21.09 3.0 undecidable manual Sn 0.93 0
MN.VSL.HHZ. 2020-08-28T22:47:13.26 1.0 undecidable manual P 230 382.0287 38 -0.54 5
IV.AGLI.HHZ. 2020-08-28T22:47:03.29 0.6 undecidable manual P 258 309.7566 38 -1.52 7
IV.BARO.EHZ. 2020-08-28T22:46:45.11 0.6 undecidable manual S 312 82.7505 50 0.8 35
IV.MMO1.EHZ. 2020-08-28T22:46:43.06 0.6 undecidable manual P 18 134.1657 50 1.38 24
IV.POFI.HHZ. 2020-08-28T22:46:43.23 0.3 undecidable manual S 93 75.2691 50 0.92 51
IV.MGAB.HHZ. 2020-08-28T22:46:42.88 0.6 undecidable manual P 336 140.4483 50 0.22 38
IV.FDMO.HHZ. 2020-08-28T22:46:42.85 0.6 undecidable manual P 9 144.1446 50 -0.38 36
IV.TOLF.HHZ. 2020-08-28T22:46:42.83 0.3 undecidable manual S 298 74.7696 50 0.67 57
IV.VVLD.HHZ. 2020-08-28T22:46:41.06 0.3 undecidable manual S 79 68.9754 50 0.44 62
IV.MC2.EHZ. 2020-08-28T22:46:41.97 0.6 undecidable manual P 14 132.2676 50 0.58 35
IV.LRP.EHZ. 2020-08-28T22:46:40.62 0.6 undecidable manual S 100 65.8896 50 0.81 36
IV.MOMA.HHZ. 2020-08-28T22:46:39.06 0.6 undecidable manual P 351 118.0929 50 -0.14 40
IV.RNI2.HHZ. 2020-08-28T22:46:38.55 0.6 undecidable manual P 92 111.7992 50 0.31 39
IV.FIAM.HHZ. 2020-08-28T22:46:38.99 0.6 undecidable manual S 24 62.5929 50 0.07 45
IV.PTQR.HHZ. 2020-08-28T22:46:37.83 0.6 undecidable manual S 59 57.5979 50 0.25 44
IV.CERA.HHZ. 2020-08-28T22:46:36.81 1.0 undecidable manual P 99 102.12 50 0.07 21
IV.INTR.HHZ. 2020-08-28T22:46:35.16 0.6 undecidable manual P 72 95.3379 50 -0.54 38
IV.CESX.HHZ. 2020-08-28T22:46:35.84 0.6 undecidable manual P 349 96.4257 50 -0.03 43
IT.CSO1.HGZ. 2020-08-28T22:46:34.33 0.6 undecidable manual S 31 45.1215 50 0.08 47
IV.ARRO.EHZ. 2020-08-28T22:46:34.71 0.6 undecidable manual P 358 91.6416 50 -0.42 40
IV.GIUL.HHZ. 2020-08-28T22:46:33.83 0.6 undecidable manual S 120 43.2234 50 0.08 47
IV.BARO.EHZ. 2020-08-28T22:46:33.95 0.3 undecidable manual P 312 82.7505 50 0.19 64
IV.GUAR.HHZ. 2020-08-28T22:46:33.83 0.6 undecidable manual S 84 42.3243 50 0.32 45
IV.TOLF.HHZ. 2020-08-28T22:46:32.67 0.3 undecidable manual P 298 74.7696 50 0.15 65
IV.POFI.HHZ. 2020-08-28T22:46:32.44 0.6 undecidable manual P 93 75.2691 50 -0.18 43
IV.LRP.EHZ. 2020-08-28T22:46:31.23 0.3 undecidable manual P 100 65.8896 50 0.06 68
IV.VVLD.HHZ. 2020-08-28T22:46:31.27 0.3 undecidable manual P 79 68.9754 50 -0.37 63
IV.LATB.EHZ. 2020-08-28T22:46:30.03 0.3 undecidable manual S 155 31.6461 50 -0.64 62
IV.FIAM.HHZ. 2020-08-28T22:46:30.25 0.3 undecidable manual P 24 62.5929 50 -0.41 63
IV.SRES.HHZ. 2020-08-28T22:46:29.76 0.6 undecidable manual P 336 58.7967 50 -0.31 43
IT.MMP1.HGE. 2020-08-28T22:46:29.20 0.6 undecidable manual P 355 55.1004 50 -0.3 44
IV.MTCE.HHZ. 2020-08-28T22:46:29.74 0.3 undecidable manual S 350 30.2475 50 -0.55 65
IV.PTQR.HHZ. 2020-08-28T22:46:29.61 0.1 positive manual P 59 57.5979 50 -0.27 88
IV.GUAR.HHZ. 2020-08-28T22:46:27.32 0.6 undecidable manual P 84 42.3243 50 -0.21 46
IT.CSO1.HGZ. 2020-08-28T22:46:27.75 0.3 undecidable manual P 31 45.1215 50 -0.21 68
IV.GIUL.HHZ. 2020-08-28T22:46:27.26 0.6 undecidable manual P 120 43.2234 50 -0.41 44
IV.SAMA.EHZ. 2020-08-28T22:46:26.00 0.3 undecidable manual S 280 17.7711 118 -0.32 70
IT.RMMM.HGE. 2020-08-28T22:46:26.59 1.0 undecidable manual P 303 34.5432 50 0.26 23
IT.RMVT.HGN. 2020-08-28T22:46:26.15 0.6 undecidable manual P 311 34.5432 50 -0.18 47
IV.MTCE.HHZ. 2020-08-28T22:46:25.08 0.1 negative manual P 350 30.2475 50 -0.6 85
IV.RCAV.EHZ. 2020-08-28T22:46:25.67 0.3 undecidable manual S 48 15.6732 121 -0.02 75
IV.LATB.EHZ. 2020-08-28T22:46:25.42 0.1 undecidable manual P 155 31.6461 50 -0.47 88
IV.ROM9.HNZ. 2020-08-28T22:46:25.72 0.3 undecidable manual P 289 25.2525 110 0.96 55
IV.LAV9.HNZ. 2020-08-28T22:46:24.78 0.3 undecidable manual S 226 12.0768 128 0.11 74
IV.RMP.HHZ. 2020-08-28T22:46:24.17 0.3 undecidable manual S 308 10.3785 132 -0.05 75
IV.MA9.HHZ. 2020-08-28T22:46:24.36 0.3 undecidable manual S 278 12.0768 128 -0.31 71
IV.SAMA.EHZ. 2020-08-28T22:46:23.26 0.1 undecidable manual P 280 17.7711 118 -0.12 97
IV.RDP.HHZ. 2020-08-28T22:46:23.52 0.3 undecidable manual S 275 7.7811 140 -0.06 75
IV.RCAV.EHZ. 2020-08-28T22:46:23.02 0.1 undecidable manual P 48 15.6732 121 0 100
IV.RMP.HHZ. 2020-08-28T22:46:22.32 0.1 undecidable manual P 308 10.3785 132 0.15 98
IV.VIVA.HHZ. 2020-08-28T22:46:22.52 0.3 undecidable manual S 262 2.7972 163 -0.23 73
IV.MA9.HHZ. 2020-08-28T22:46:22.47 0.3 undecidable manual P 278 12.0768 128 0.04 75
IV.LAV9.HNZ. 2020-08-28T22:46:22.91 0.1 undecidable manual P 226 12.0768 128 0.48 91
IV.RDP.HHZ. 2020-08-28T22:46:22.04 0.1 positive manual P 275 7.7811 140 0.24 97
IV.VIVA.HHZ. 2020-08-28T22:46:21.44 0.1 negative manual P 262 2.7972 163 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RMP.HHE. ML:2.9 0.01123 0.92 AML other m 2020-08-28T22:46:24.89
IV.RCAV.EHE. ML:2.7 0.0049299999999999995 0.64 AML other m 2020-08-28T22:46:26.63
IV.LAV9.HNN. ML:3.0 0.01143 0.54 AML other m 2020-08-28T22:46:26.96
IV.LAV9.HHN. ML:3.0 0.01239 0.52 AML other m 2020-08-28T22:46:26.96
IV.RCAV.EHN. ML:2.7 0.00546 0.22 AML other m 2020-08-28T22:46:26.85
IV.RDP.HHE. ML:2.6 0.006885 0.32 AML other m 2020-08-28T22:46:27.10
IV.RDP.HHN. ML:2.8 0.0103 0.44 AML other m 2020-08-28T22:46:27.49
IV.LAV9.HNE. ML:3.1 0.0162 0.26 AML other m 2020-08-28T22:46:29.10
IV.LAV9.HHE. ML:3.2 0.0174 0.26 AML other m 2020-08-28T22:46:29.10
IV.RMP.HHN. ML:3.1 0.01635 0.32 AML other m 2020-08-28T22:46:29.59
IV.LATB.EHN. ML:1.4 0.00010255 0.2 AML other m 2020-08-28T22:46:30.31
IV.MTCE.HHN. ML:2.1 0.0006205000000000001 0.32 AML other m 2020-08-28T22:46:30.57
IV.LATB.EHE. ML:1.7 0.000234 0.72 AML other m 2020-08-28T22:46:31.62
IV.MTCE.HHE. ML:2.0 0.0004995 0.34 AML other m 2020-08-28T22:46:32.41
IV.GIUL.HHE. ML:2.2 0.0005645 0.54 AML other m 2020-08-28T22:46:34.60
IV.GUAR.HHN. ML:2.3 0.0006355 0.54 AML other m 2020-08-28T22:46:34.21
IV.GIUL.HHN. ML:2.3 0.0006585 0.22 AML other m 2020-08-28T22:46:34.73
IV.GUAR.HHE. ML:2.2 0.0005425 0.88 AML other m 2020-08-28T22:46:37.55
IV.PTQR.HHN. ML:2.2 0.000378 0.32 AML other m 2020-08-28T22:46:38.04
IV.PTQR.HHE. ML:2.2 0.00034599999999999995 1 AML other m 2020-08-28T22:46:38.77
IV.SRES.HHE. ML:2.0 0.00019 1.74 AML other m 2020-08-28T22:46:40.07
IV.FIAM.HHN. ML:1.8 0.000117 0.48 AML other m 2020-08-28T22:46:40.36
IV.SRES.HHN. ML:1.8 0.00014600000000000003 0.34 AML other m 2020-08-28T22:46:41.07
IV.VVLD.HHE. ML:2.4 0.00041349999999999997 0.24 AML other m 2020-08-28T22:46:41.36
IV.VVLD.HHN. ML:2.4 0.00047650000000000004 0.42 AML other m 2020-08-28T22:46:41.54
IV.LRP.EHN. ML:1.6 0.00007265 0.18 AML other m 2020-08-28T22:46:42.12
IV.LRP.EHE. ML:2.2 0.0002755 0.22 AML other m 2020-08-28T22:46:42.31
IV.TOLF.HHE. ML:2.2 0.00021349999999999999 1.44 AML other m 2020-08-28T22:46:43.93
IV.POFI.HHN. ML:1.8 0.0001008 0.22 AML other m 2020-08-28T22:46:44.49
IV.BARO.EHN. ML:2.3 0.00027350000000000003 1.44 AML other m 2020-08-28T22:46:45.12
IV.POFI.HHE. ML:1.9 0.00011549999999999999 1.4 AML other m 2020-08-28T22:46:45.95
IV.BARO.HNN. ML:2.4 0.0003115 1.66 AML other m 2020-08-28T22:46:45.95
IV.BARO.HNE. ML:2.4 0.00032099999999999994 0.4 AML other m 2020-08-28T22:46:46.30
IV.BARO.EHE. ML:2.3 0.0002895 0.5 AML other m 2020-08-28T22:46:46.50
IV.FIAM.HHE. ML:1.7 0.0001013 1.54 AML other m 2020-08-28T22:46:46.14
IV.TOLF.HHN. ML:2.2 0.000226 0.6 AML other m 2020-08-28T22:46:47.09
IV.INTR.HHN. ML:2.2 0.0001485 0.8 AML other m 2020-08-28T22:46:50.51
IV.CESX.HHN. ML:2.1 0.000132 0.82 AML other m 2020-08-28T22:46:52.44
IV.ARRO.EHE. ML:2.0 0.000118 0.2 AML other m 2020-08-28T22:46:52.75
IV.ARRO.EHN. ML:2.1 0.000144 0.32 AML other m 2020-08-28T22:46:53.64
IV.CESX.HHE. ML:2.1 0.00013450000000000002 0.36 AML other m 2020-08-28T22:46:54.30
IV.INTR.HHE. ML:2.1 0.00014399999999999998 1.48 AML other m 2020-08-28T22:46:55.01
IV.MOMA.HHN. ML:2.1 0.00010449999999999999 1.72 AML other m 2020-08-28T22:46:56.88
IV.MOMA.HHE. ML:2.2 0.000115 0.36 AML other m 2020-08-28T22:46:59.55
IV.CERA.HHN. ML:2.0 0.00010135 1.1 AML other m 2020-08-28T22:47:01.55
IV.CERA.HHE. ML:1.9 0.00008135000000000001 0.62 AML other m 2020-08-28T22:47:02.10
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