Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 25-01-2022 and time 03:06:01 (Italy) in region 1 km E Lariano (RM)

A magnitude ML 1.5 earthquake occured in region: 1 km E Lariano (RM), on

  • 25-01-2022 02:06:01 (UTC)
  • 25-01-2022 03:06:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 41.7290, 12.8420 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
Lariano RM 1 13432 13432
Artena RM 6 14276 27708
Velletri RM 7 53303 81011
Labico RM 7 6379 87390
Valmontone RM 8 15959 103349
Rocca Massima LT 9 1136 104485
Rocca Priora RM 10 11962 116447
Nemi RM 11 1943 118390
San Cesareo RM 11 15153 133543
Cori LT 11 11065 144608
Rocca di Papa RM 12 17034 161642
Monte Compatri RM 12 11978 173620
Zagarolo RM 13 17843 191463
Cave RM 13 11287 202750
Genzano di Roma RM 13 23970 226720
Lanuvio RM 13 13632 240352
Palestrina RM 13 21672 262024
Colleferro RM 14 21595 283619
Castel San Pietro Romano RM 14 902 284521
Colonna RM 14 4287 288808
Ariccia RM 14 19407 308215
Monte Porzio Catone RM 14 8693 316908
Cisterna di Latina LT 15 36868 353776
Albano Laziale RM 15 41715 395491
Segni RM 16 9159 404650
Grottaferrata RM 16 20327 424977
Marino RM 16 43026 468003
Rocca di Cave RM 16 377 468380
Castel Gandolfo RM 16 8997 477377
Gallicano nel Lazio RM 16 6334 483711
Frascati RM 16 22087 505798
Genazzano RM 16 6036 511834
Capranica Prenestina RM 18 351 512185
Gavignano RM 18 1916 514101
Poli RM 18 2418 516519
Montelanico RM 19 2131 518650
Norma LT 19 3946 522596

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km NE of Velletri (53303 inhabitants)
22 Km NE of Aprilia (73446 inhabitants)
26 Km S of Tivoli (56533 inhabitants)
29 Km E of Pomezia (62966 inhabitants)
29 Km N of Latina (125985 inhabitants)
32 Km SE of Guidonia Montecelio (88673 inhabitants)
35 Km SE of Roma (2864731 inhabitants)
36 Km NE of Anzio (54211 inhabitants)
50 Km E of Fiumicino (78395 inhabitants)
83 Km SW of L'Aquila (69753 inhabitants)
94 Km S of Terni (111501 inhabitants)
96 Km E of Civitavecchia (52991 inhabitants)
98 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 1.5 2022-01-25
02:06:01		 41.729 12.8417 11 2022-07-08
12:33:43		 Bollettino Sismico Italiano INGV 103165261
Reviewed
Rev100 		ML 1.4 2022-01-25
02:06:02		 41.7308 12.8797 1 2022-01-25
02:17:00		 Sala Sismica INGV-Roma 100159581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-25 02:06:01 ± 0.06
Latitude 41.7290 ± 0.0045
Longitude 12.8417 ± 0.0072
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 103165261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 521
Semi-minor axis of confidence ellipse (meter) 471
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 282
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.05756
Epicentral distance of station farthest from the epicenter (degree) 0.35253
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 103165261
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-04-13 14:26:50

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 100159581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-25 02:17:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2022-01-25T02:06:14.96 0.3 undecidable manual S 119 39.1275 50 0.31 67
IV.MTCE.HHZ. 2022-01-25T02:06:13.07 0.6 undecidable manual S 346 33.6441 50 -0.11 47
IV.LATB.EHZ. 2022-01-25T02:06:11.40 0.3 undecidable manual S 159 27.9498 50 -0.27 69
IV.GIUL.HHZ. 2022-01-25T02:06:09.12 0.1 undecidable manual P 119 39.1275 50 -0.03 95
IV.RCAV.EHZ. 2022-01-25T02:06:08.16 0.6 undecidable manual S 33 15.6732 124 -0.04 49
IV.MTCE.HHZ. 2022-01-25T02:06:08.32 0.3 undecidable manual P 346 33.6441 50 0.01 72
IV.RMP.HHZ. 2022-01-25T02:06:07.81 0.3 undecidable manual S 309 14.5743 126 -0.08 74
IV.LATB.EHZ. 2022-01-25T02:06:07.27 0.3 undecidable manual P 159 27.9498 50 -0.16 71
IV.LAV9.HHZ. 2022-01-25T02:06:07.63 0.6 undecidable manual S 244 13.0758 129 0.14 49
IV.RDP.HHZ. 2022-01-25T02:06:06.98 0.3 undecidable manual S 288 11.3775 133 -0.06 74
IV.VIVA.HHZ. 2022-01-25T02:06:05.42 0.6 undecidable manual S 292 6.3936 149 -0.5 45
IV.LAV9.HHZ. 2022-01-25T02:06:05.13 0.3 undecidable manual P 244 13.0758 129 0.11 73
IV.RCAV.EHZ. 2022-01-25T02:06:05.41 0.3 undecidable manual P 33 15.6732 124 -0.02 74
IV.RMP.HHZ. 2022-01-25T02:06:05.41 0.3 undecidable manual P 309 14.5743 126 0.16 72
IV.RDP.HHZ. 2022-01-25T02:06:05.21 0.3 undecidable manual P 288 11.3775 133 0.45 68
IV.VIVA.HHZ. 2022-01-25T02:06:04.06 0.1 negative manual P 292 6.3936 149 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VIVA.HHE. ML:1.6 0.0005991085000000001 0.1808 AML other m 2022-01-25T02:06:06.50
IV.VIVA.HHN. ML:1.6 0.0006063527 1.72 AML other m 2022-01-25T02:06:07.98
IV.RDP.HHE. ML:1.2 0.00016669420000000001 0.16 AML other m 2022-01-25T02:06:08.20
IV.RDP.HHN. ML:1.4 0.00030064884999999995 0.24 AML other m 2022-01-25T02:06:09.27
IV.RMP.HHE. ML:1.5 0.00027866935000000006 0.2192 AML other m 2022-01-25T02:06:10.93
IV.LAV9.HNE. ML:1.6 0.0004140013 1.7696 AML other m 2022-01-25T02:06:10.92
IV.LAV9.HHE. ML:1.6 0.000421918 1.7808 AML other m 2022-01-25T02:06:10.92
IV.RMP.HHN. ML:1.6 0.00038070974999999995 0.2192 AML other m 2022-01-25T02:06:11.02
IV.LAV9.HNN. ML:1.6 0.00039784625 0.36 AML other m 2022-01-25T02:06:11.17
IV.LAV9.HHN. ML:1.6 0.00037802049999999997 0.36 AML other m 2022-01-25T02:06:11.17
IV.GIUL.HHE. ML:1.2 0.0000562873 1.0208 AML other m 2022-01-25T02:06:15.48
IV.GIUL.HHN. ML:0.9 0.00002753568 0.2 AML other m 2022-01-25T02:06:16.25
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