Earthquake with magnitude of ML 1.2 on date 29-08-2020 and time 03:41:26 (Italy) in region 4 km W Lariano (RM)

A magnitude ML 1.2 earthquake occured in region: 4 km W Lariano (RM), on

  • 29-08-2020 01:41:26 (UTC)
  • 29-08-2020 03:41:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.7470, 12.7900 at 10 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
Lariano RM 4 13432 13432
Rocca Priora RM 6 11962 25394
Velletri RM 7 53303 78697
Nemi RM 7 1943 80640
Rocca di Papa RM 7 17034 97674
Monte Compatri RM 8 11978 109652
San Cesareo RM 9 15153 124805
Genzano di Roma RM 9 23970 148775
Labico RM 9 6379 155154
Monte Porzio Catone RM 10 8693 163847
Ariccia RM 10 19407 183254
Lanuvio RM 10 13632 196886
Colonna RM 10 4287 201173
Artena RM 11 14276 215449
Albano Laziale RM 11 41715 257164
Zagarolo RM 11 17843 275007
Marino RM 11 43026 318033
Grottaferrata RM 11 20327 338360
Frascati RM 11 22087 360447
Valmontone RM 11 15959 376406
Castel Gandolfo RM 12 8997 385403
Rocca Massima LT 13 1136 386539
Palestrina RM 13 21672 408211
Gallicano nel Lazio RM 14 6334 414545
Castel San Pietro Romano RM 14 902 415447
Cave RM 14 11287 426734
Cori LT 16 11065 437799
Ciampino RM 17 38412 476211
Rocca di Cave RM 17 377 476588
Cisterna di Latina LT 17 36868 513456
Poli RM 18 2418 515874
Genazzano RM 18 6036 521910
Colleferro RM 18 21595 543505
Capranica Prenestina RM 19 351 543856
Casape RM 20 744 544600

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km N of Velletri (53303 inhabitants)
21 Km NE of Aprilia (73446 inhabitants)
24 Km S of Tivoli (56533 inhabitants)
25 Km E of Pomezia (62966 inhabitants)
29 Km S of Guidonia Montecelio (88673 inhabitants)
30 Km SE of Roma (2864731 inhabitants)
32 Km N of Latina (125985 inhabitants)
36 Km NE of Anzio (54211 inhabitants)
46 Km E of Fiumicino (78395 inhabitants)
84 Km SW of L'Aquila (69753 inhabitants)
91 Km E of Civitavecchia (52991 inhabitants)
91 Km S of Terni (111501 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
Reviewed
Rev100
ML 1.2 2020-08-29
01:41:26
41.7468 12.7897 10 2020-08-29
01:48:47
Sala Sismica INGV-Roma 82425191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-29 01:41:26 ± 0.1
Latitude 41.7468 ± 0.0099
Longitude 12.7897 ± 0.0060
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82425191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1029
Semi-minor axis of confidence ellipse (meter) 503
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 346
Circular confidence region, given by single value of horizontal uncertainty (meter) 1030.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 165
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.01529
Epicentral distance of station farthest from the epicenter (degree) 0.39480
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 82425191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-29 01:48:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2020-08-29T01:41:41.44 0.3 undecidable manual S 118 43.8228 50 -0.02 72
IV.GIUL.HHZ. 2020-08-29T01:41:35.11 0.3 undecidable manual P 118 43.8228 50 -0.22 69
IV.SAMA.EHZ. 2020-08-29T01:41:33.51 0.3 undecidable manual S 283 16.7721 119 -0.12 74
IV.RCAV.EHZ. 2020-08-29T01:41:33.68 0.3 undecidable manual S 49 17.0718 119 -0.02 75
IV.RDP.HHZ. 2020-08-29T01:41:31.01 0.3 undecidable manual S 283 6.7932 145 0.03 76
IV.RMP.HHZ. 2020-08-29T01:41:31.55 0.3 undecidable manual S 316 10.0788 133 -0.19 74
IV.MA9.HHZ. 2020-08-29T01:41:31.77 0.3 undecidable manual S 283 11.0778 130 -0.24 73
IV.VIVA.HHZ. 2020-08-29T01:41:30.05 0.3 undecidable manual S 283 1.6983 170 -0.23 74
IV.RCAV.EHZ. 2020-08-29T01:41:30.82 0.3 undecidable manual P 49 17.0718 119 -0.03 75
IV.SAMA.EHZ. 2020-08-29T01:41:30.94 0.3 undecidable manual P 283 16.7721 119 0.14 74
IV.RMP.HHZ. 2020-08-29T01:41:30.07 0.3 undecidable manual P 316 10.0788 133 0.35 71
IV.VIVA.HHZ. 2020-08-29T01:41:29.04 0.1 undecidable manual P 283 1.6983 170 0.17 100
IV.RDP.HHZ. 2020-08-29T01:41:29.70 0.1 undecidable manual P 283 6.7932 145 0.43 94
IV.MA9.HHZ. 2020-08-29T01:41:29.70 0.1 undecidable manual P 283 11.0778 130 -0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VIVA.HHE. ML:0.0 0.0006552664500000001 0.2 AML other m 2020-08-29T01:41:30.63
IV.VIVA.HHN. ML:0.0 0.0010121290499999999 0.18 AML other m 2020-08-29T01:41:30.16
IV.RDP.HHE. ML:1.2 0.00024327721 0.16 AML other m 2020-08-29T01:41:31.81
IV.RDP.HHN. ML:1.4 0.00041896045000000006 0.2 AML other m 2020-08-29T01:41:31.70
IV.RMP.HHE. ML:1.3 0.00027939539999999996 0.26 AML other m 2020-08-29T01:41:36.35
IV.RMP.HHN. ML:1.4 0.000319126045 0.18 AML other m 2020-08-29T01:41:33.11
IV.RCAV.EHE. ML:0.8 0.00005612505 0.32 AML other m 2020-08-29T01:41:33.80
IV.RCAV.EHN. ML:0.8 0.00005038005 0.16 AML other m 2020-08-29T01:41:34.53
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