Earthquake with magnitude of ML 1.4 on date 01-01-2023 and time 00:20:41 (UTC) in region 2 km W Lariano (RM)

A magnitude ML 1.4 earthquake occured in region: 2 km W Lariano (RM), on

  • 01-01-2023 00:20:41 (UTC)
  • 01-01-2023 01:20:41 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7340, 12.8150 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
Lariano RM 2 13432 13432
Velletri RM 6 53303 66735
Rocca Priora RM 8 11962 78697
Labico RM 8 6379 85076
Nemi RM 8 1943 87019
Artena RM 8 14276 101295
Rocca di Papa RM 9 17034 118329
Valmontone RM 10 15959 134288
San Cesareo RM 10 15153 149441
Monte Compatri RM 11 11978 161419
Genzano di Roma RM 11 23970 185389
Rocca Massima LT 11 1136 186525
Lanuvio RM 11 13632 200157
Zagarolo RM 12 17843 218000
Ariccia RM 12 19407 237407
Monte Porzio Catone RM 12 8693 246100
Colonna RM 12 4287 250387
Albano Laziale RM 13 41715 292102
Cori LT 13 11065 303167
Palestrina RM 13 21672 324839
Marino RM 14 43026 367865
Grottaferrata RM 14 20327 388192
Cave RM 14 11287 399479
Castel Gandolfo RM 14 8997 408476
Frascati RM 14 22087 430563
Castel San Pietro Romano RM 14 902 431465
Gallicano nel Lazio RM 15 6334 437799
Cisterna di Latina LT 16 36868 474667
Colleferro RM 16 21595 496262
Rocca di Cave RM 17 377 496639
Genazzano RM 17 6036 502675
Segni RM 18 9159 511834
Capranica Prenestina RM 18 351 512185
Poli RM 18 2418 514603
Ciampino RM 19 38412 553015

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km NE of Velletri (53303 inhabitants)
21 Km NE of Aprilia (73446 inhabitants)
26 Km S of Tivoli (56533 inhabitants)
27 Km E of Pomezia (62966 inhabitants)
31 Km N of Latina (125985 inhabitants)
31 Km S of Guidonia Montecelio (88673 inhabitants)
33 Km SE of Roma (2864731 inhabitants)
35 Km NE of Anzio (54211 inhabitants)
48 Km E of Fiumicino (78395 inhabitants)
84 Km SW of L'Aquila (69753 inhabitants)
93 Km S of Terni (111501 inhabitants)
93 Km E of Civitavecchia (52991 inhabitants)
96 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 1.4 2023-01-01
00:20:41
41.7342 12.8153 8 2023-01-01
00:43:06
Sala Sismica INGV-Roma 113221461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-01 00:20:41 ± 0.07
Latitude 41.7342 ± 0.0045
Longitude 12.8153 ± 0.0084
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 113221461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 662
Semi-minor axis of confidence ellipse (meter) 468
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 271
Circular confidence region, given by single value of horizontal uncertainty (meter) 660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.61693
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 11
Type of magnitude ML
Reference to an origin 113221461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-01 00:43:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IX.SCL3.EHZ.02 2023-01-01T00:21:47.32 3.0 undecidable manual Sn -0.89 0
IV.TRE1.HNZ. 2023-01-01T00:21:34.78 3.0 undecidable manual Sg 3.89 0
GU.CARD.HHZ. 2023-01-01T00:21:29.77 3.0 undecidable manual Pg 4.53 0
IV.VVLD.HHZ. 2023-01-01T00:21:03.39 0.6 undecidable manual S 77 68.4759 50 0.26 43
IV.LRP.EHZ. 2023-01-01T00:21:02.79 0.6 undecidable manual S 98 64.5909 50 0.7 38
IV.PTQR.HHZ. 2023-01-01T00:21:00.81 0.6 undecidable manual S 56 57.8976 50 0.5 42
IV.T0110.HHZ. 2023-01-01T00:20:59.75 3.0 positive manual P 1.14 0
IV.INTR.HHZ. 2023-01-01T00:20:57.91 3.0 undecidable manual P -0.63 0
IV.GIUL.HHZ. 2023-01-01T00:20:56.05 0.3 undecidable manual S 118 41.3253 50 0.18 69
IV.VVLD.HHZ. 2023-01-01T00:20:53.65 0.3 undecidable manual P 77 68.4759 50 -0.41 62
IV.FIAM.HHZ. 2023-01-01T00:20:53.27 0.3 undecidable manual P 23 64.1913 50 -0.13 67
IV.LRP.EHZ. 2023-01-01T00:20:53.24 0.3 undecidable manual P 98 64.5909 50 -0.22 65
IV.LATB.EHZ. 2023-01-01T00:20:52.12 0.6 undecidable manual S 155 29.3484 105 -0.07 48
IV.PTQR.HHZ. 2023-01-01T00:20:52.16 0.3 undecidable manual P 56 57.8976 50 -0.27 66
IV.CERT.HHZ. 2023-01-01T00:20:51.75 0.3 undecidable manual S 30 27.5502 106 0.16 71
IV.GIUL.HHZ. 2023-01-01T00:20:49.55 0.1 undecidable manual P 118 41.3253 50 -0.32 89
IV.GUAR.HHZ. 2023-01-01T00:20:49.65 0.1 undecidable manual P 81 41.625 50 -0.27 90
IV.MTCE.HHE. 2023-01-01T00:20:48.28 0.3 undecidable manual P 349 32.5452 103 -0.1 71
IV.LATB.EHZ. 2023-01-01T00:20:47.62 0.3 undecidable manual P 155 29.3484 105 -0.12 71
IV.CERT.HHZ. 2023-01-01T00:20:47.58 0.1 undecidable manual P 30 27.5502 106 0.19 94
IV.RMP.HHZ. 2023-01-01T00:20:46.67 0.3 undecidable manual S 313 12.5763 122 -0.13 73
IV.LAV9.HHZ. 2023-01-01T00:20:46.80 0.6 undecidable manual S 237 11.4774 124 0.31 47
IV.RDP.HHZ. 2023-01-01T00:20:45.66 0.3 undecidable manual S 289 9.1797 130 -0.19 73
IV.RMP.HHZ. 2023-01-01T00:20:44.84 0.1 undecidable manual P 313 12.5763 122 0.21 96
IV.VIVA.HHZ. 2023-01-01T00:20:44.41 0.3 undecidable manual S 295 4.1958 152 -0.32 71
IV.LAV9.HHZ. 2023-01-01T00:20:44.93 0.3 undecidable manual P 237 11.4774 124 0.48 68
IV.MA9.HHZ. 2023-01-01T00:20:44.75 0.3 undecidable manual P 287 13.5753 120 -0.05 74
IV.RDP.HHZ. 2023-01-01T00:20:44.21 0.1 undecidable manual P 289 9.1797 130 0.13 98
IV.VIVA.HHZ. 2023-01-01T00:20:43.51 0.1 undecidable manual P 295 4.1958 152 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VIVA.HHN. ML:0.0 0.024994685 0.16 AML other m 2023-01-01T00:20:44.46
IV.VIVA.HHE. ML:0.0 0.01620651 0.2 AML other m 2023-01-01T00:20:44.70
IV.GIUL.HHN. ML:1.6 0.00014252455 0.32 AML other m 2023-01-01T00:20:56.47
IV.GIUL.HHE. ML:1.3 0.000071470795 0.46 AML other m 2023-01-01T00:20:56.20
IV.GUAR.HHN. ML:1.4 0.00007883408999999999 0.2 AML other m 2023-01-01T00:20:58.78
IV.GUAR.HHE. ML:1.3 0.00007131841499999999 0.12 AML other m 2023-01-01T00:20:58.46
IV.PTQR.HHN. ML:1.4 0.0000613 1.64 AML other m 2023-01-01T00:21:01.12
IV.PTQR.HHE. ML:1.5 0.00007515 0.26 AML other m 2023-01-01T00:21:01.89
IV.LRP.EHE. ML:0.0 0.00011198535 0.26 AML other m 2023-01-01T00:21:03.45
IV.LRP.EHN. ML:0.0 0.000019877665 0.2 AML other m 2023-01-01T00:21:03.46
IV.CERT.HHE. ML:1.0 0.000058907959999999996 0.24 AML other m 2023-01-01T00:20:53.53
IV.CERT.HHN. ML:1.4 0.00013847005 0.18 AML other m 2023-01-01T00:20:52.95
IV.FIAM.HNE. ML:1.9 0.00014611530000000001 0.78 AML other m 2023-01-01T00:21:02.05
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