Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 16-05-2024 and time 21:37:20 (UTC) in region 2 km SE Velletri (RM)

A magnitude ML 2.4 earthquake occured in region: 2 km SE Velletri (RM), on

  • 16-05-2024 21:37:20 (UTC)
  • 16-05-2024 23:37:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.6680, 12.7930 at 9 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.

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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
Velletri RM 3 53303 53303
Lanuvio RM 8 13632 66935
Lariano RM 8 13432 80367
Nemi RM 9 1943 82310
Cisterna di Latina LT 9 36868 119178
Genzano di Roma RM 9 23970 143148
Cori LT 11 11065 154213
Rocca Massima LT 11 1136 155349
Ariccia RM 12 19407 174756
Rocca di Papa RM 13 17034 191790
Albano Laziale RM 13 41715 233505
Artena RM 13 14276 247781
Rocca Priora RM 14 11962 259743
Aprilia LT 14 73446 333189
Castel Gandolfo RM 15 8997 342186
Labico RM 15 6379 348565
Marino RM 16 43026 391591
Valmontone RM 16 15959 407550
Monte Compatri RM 16 11978 419528
Grottaferrata RM 17 20327 439855
San Cesareo RM 17 15153 455008
Norma LT 18 3946 458954
Monte Porzio Catone RM 18 8693 467647
Frascati RM 18 22087 489734
Colonna RM 19 4287 494021
Colleferro RM 19 21595 515616
Segni RM 19 9159 524775
Zagarolo RM 20 17843 542618

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km SE of Velletri (53303 inhabitants)
14 Km NE of Aprilia (73446 inhabitants)
24 Km E of Pomezia (62966 inhabitants)
24 Km NW of Latina (125985 inhabitants)
28 Km NE of Anzio (54211 inhabitants)
33 Km S of Tivoli (56533 inhabitants)
36 Km SE of Roma (2864731 inhabitants)
37 Km S of Guidonia Montecelio (88673 inhabitants)
48 Km E of Fiumicino (78395 inhabitants)
91 Km SW of L'Aquila (69753 inhabitants)
95 Km SE of Civitavecchia (52991 inhabitants)
100 Km S of Terni (111501 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 2.4 2024-05-16
21:37:20		 41.6682 12.7927 9 2024-05-16
21:49:53		 Sala Sismica INGV-Roma 127797531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-05-16 21:37:20 ± 0.08
Latitude 41.6682 ± 0.0045
Longitude 12.7927 ± 0.0072
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 127797531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 661
Semi-minor axis of confidence ellipse (meter) 479
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 246
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) 134
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.18890
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 20
Magnitude information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 46
Type of magnitude ML
Reference to an origin 127797531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-05-16 21:49:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SERS.HHZ. 2024-05-16T21:39:16.19 3.0 undecidable manual Sg 9.71 0
IV.MSSA.HHZ. 2024-05-16T21:39:02.27 3.0 undecidable manual Sn 4.81 0
IV.CSP1.EHZ. 2024-05-16T21:38:09.08 3.0 undecidable manual S 4.1 0
IV.MCRV.HHZ. 2024-05-16T21:37:59.66 3.0 undecidable manual Pg 6.99 0
IV.INTR.HHZ. 2024-05-16T21:37:50.00 0.3 undecidable manual S 67 99.5226 50 0.42 60
IV.CSP1.EHZ. 2024-05-16T21:37:49.18 3.0 negative manual P 3.87 0
IV.MMO1.EHZ. 2024-05-16T21:37:45.81 3.0 undecidable manual P 2.77 0
IV.VCRE.HHZ. 2024-05-16T21:37:44.92 3.0 undecidable manual P -0.95 0
IV.VVLD.HHZ. 2024-05-16T21:37:42.49 0.6 undecidable manual S 72 72.2721 50 0.17 44
IV.NRCA.HHZ. 2024-05-16T21:37:42.34 1.0 undecidable manual P 11 131.9679 50 0.19 20
IV.LNSS.HHZ. 2024-05-16T21:37:37.86 1.0 undecidable manual P 11 105.7164 50 -0.25 21
IV.RM33.EHZ. 2024-05-16T21:37:37.24 1.0 undecidable manual P 20 99.5226 50 0.09 21
IV.INTR.HHZ. 2024-05-16T21:37:36.82 0.6 negative manual P 67 99.5226 50 -0.33 41
IV.GUAR.HHZ. 2024-05-16T21:37:34.97 0.6 undecidable manual S 72 45.2214 50 -0.14 47
IV.GIUL.HHZ. 2024-05-16T21:37:33.63 0.6 undecidable manual S 108 40.2264 50 -0.13 48
IV.POFI.HHZ. 2024-05-16T21:37:33.44 1.0 negative manual P 86 76.368 50 -0.15 22
IV.CERT.HHZ. 2024-05-16T21:37:32.60 0.6 undecidable manual S 27 34.8429 50 0.27 47
IV.SRES.HHZ. 2024-05-16T21:37:32.31 0.6 undecidable manual P 340 67.2771 50 0.13 45
IV.VVLD.HHZ. 2024-05-16T21:37:32.84 0.6 positive manual P 72 72.2721 50 -0.11 45
IV.FIAM.HHZ. 2024-05-16T21:37:32.69 0.3 positive manual P 22 71.6727 50 -0.19 67
IV.PTQR.HHZ. 2024-05-16T21:37:31.57 1.0 undecidable manual P 52 63.7917 50 -0.07 23
IV.LRP.EHZ. 2024-05-16T21:37:31.88 0.6 undecidable manual P 92 65.8896 50 -0.08 46
IV.RCAV.EHZ. 2024-05-16T21:37:29.19 0.6 undecidable manual S 32 23.5542 111 0.25 48
IV.GUAR.HHZ. 2024-05-16T21:37:28.74 0.3 positive manual P 72 45.2214 50 -0.05 72
IV.SAMA.HNZ. 2024-05-16T21:37:28.08 0.6 undecidable manual S 307 20.7681 114 0.03 50
IV.GIUL.HHZ. 2024-05-16T21:37:27.87 1.0 positive manual P 108 40.2264 50 -0.15 24
IV.MTCE.HHZ. 2024-05-16T21:37:27.82 1.0 undecidable manual P 354 39.5271 50 -0.09 24
IV.RMP.HHZ. 2024-05-16T21:37:26.86 0.6 undecidable manual S 336 17.5713 118 -0.18 49
IV.CERT.HHZ. 2024-05-16T21:37:26.87 1.0 positive manual P 27 34.8429 50 -0.32 23
IV.LATB.EHZ. 2024-05-16T21:37:25.27 0.1 negative manual P 144 23.9538 111 -0.03 100
IV.RCAV.EHZ. 2024-05-16T21:37:25.21 1.0 undecidable manual P 32 23.5542 111 -0.02 25
IV.SAMA.HNZ. 2024-05-16T21:37:24.83 0.1 undecidable manual P 307 20.7681 114 0.12 99
IV.RMP.HHZ. 2024-05-16T21:37:24.62 0.3 undecidable manual P 336 17.5713 118 0.49 69
IV.RDP.HNZ. 2024-05-16T21:37:24.87 0.6 undecidable manual S 326 12.2766 127 -0.63 44
IV.LAV9.HNZ. 2024-05-16T21:37:24.74 0.6 undecidable manual S 278 7.881 140 0.37 48
IV.LAV9.HNZ. 2024-05-16T21:37:23.00 0.6 undecidable manual P 278 7.881 140 0.41 47
IV.RDP.HNZ. 2024-05-16T21:37:22.78 0.1 undecidable manual P 326 12.2766 127 -0.46 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LAV9.HHN. ML:3.0 0.016 0.76 AML other m 2024-05-16T21:37:27.10
IV.LAV9.HNN. ML:3.4 0.037450000000000004 0.76 AML other m 2024-05-16T21:37:27.10
IV.RCAV.EHN. ML:2.5 0.0021349999999999997 0.24 AML other m 2024-05-16T21:37:30.22
IV.RMP.HHE. ML:3.2 0.013149999999999998 0.48 AML other m 2024-05-16T21:37:30.49
IV.RCAV.EHE. ML:2.5 0.0020700000000000002 1.12 AML other m 2024-05-16T21:37:30.07
IV.RMP.HHN. ML:3.2 0.01215 1.1 AML other m 2024-05-16T21:37:31.18
IV.LAV9.HHE. ML:3.0 0.0148 0.28 AML other m 2024-05-16T21:37:31.23
IV.LAV9.HNE. ML:3.4 0.0357 0.28 AML other m 2024-05-16T21:37:31.24
IV.GIUL.HHE. ML:2.4 0.0009744999999999999 0.48 AML other m 2024-05-16T21:37:34.05
IV.GIUL.HHN. ML:2.5 0.00113 0.64 AML other m 2024-05-16T21:37:34.52
IV.GIUL.HNN. ML:2.5 0.0010899999999999998 0.62 AML other m 2024-05-16T21:37:34.52
IV.GIUL.HNE. ML:2.4 0.0009455 0.42 AML other m 2024-05-16T21:37:34.51
IV.CERT.HNN. ML:2.3 0.0008845000000000001 0.26 AML other m 2024-05-16T21:37:34.41
IV.CERT.HHE. ML:2.5 0.0013599999999999999 0.26 AML other m 2024-05-16T21:37:34.51
IV.CERT.HHN. ML:2.4 0.0010049999999999998 0.28 AML other m 2024-05-16T21:37:35.17
IV.CERT.HNE. ML:2.5 0.00127 0.34 AML other m 2024-05-16T21:37:35.90
IV.GUAR.HNN. ML:2.7 0.0016400000000000002 1.76 AML other m 2024-05-16T21:37:35.96
IV.GUAR.HHN. ML:2.7 0.001625 1.78 AML other m 2024-05-16T21:37:35.96
IV.GUAR.HHE. ML:2.8 0.002105 1.2 AML other m 2024-05-16T21:37:36.29
IV.GUAR.HNE. ML:2.8 0.00214 1.2 AML other m 2024-05-16T21:37:36.29
IV.MTCE.HHE. ML:1.9 0.0003045 0.36 AML other m 2024-05-16T21:37:37.60
IV.MTCE.HHN. ML:1.9 0.00029 0.68 AML other m 2024-05-16T21:37:39.50
IV.PTQR.HHE. ML:2.2 0.00032399999999999996 0.26 AML other m 2024-05-16T21:37:41.60
IV.PTQR.HHN. ML:2.1 0.000222 0.42 AML other m 2024-05-16T21:37:42.01
IV.LRP.EHE. ML:2.6 0.000736 1.62 AML other m 2024-05-16T21:37:42.05
IV.VVLD.HHE. ML:2.5 0.0004835 1.52 AML other m 2024-05-16T21:37:42.07
IV.LRP.EHN. ML:2.2 0.00026549999999999995 0.28 AML other m 2024-05-16T21:37:43.38
IV.FIAM.HHE. ML:2.6 0.0006265000000000001 0.5 AML other m 2024-05-16T21:37:43.66
IV.FIAM.HNE. ML:2.5 0.000555 0.52 AML other m 2024-05-16T21:37:43.67
IV.VVLD.HHN. ML:2.3 0.00034950000000000004 0.2 AML other m 2024-05-16T21:37:43.60
IV.FIAM.HHN. ML:2.6 0.0006495 1.3 AML other m 2024-05-16T21:37:44.67
IV.FIAM.HNN. ML:2.6 0.0006525 1.3 AML other m 2024-05-16T21:37:44.67
IV.SRES.HHN. ML:1.8 0.00011595 0.5 AML other m 2024-05-16T21:37:44.69
IV.POFI.HHN. ML:2.1 0.00017449999999999999 0.6 AML other m 2024-05-16T21:37:45.61
IV.POFI.HHE. ML:2.3 0.00026749999999999994 0.66 AML other m 2024-05-16T21:37:46.06
IV.SRES.HHE. ML:1.8 0.00011999999999999999 1.7 AML other m 2024-05-16T21:37:49.12
IV.RM33.EHE. ML:2.3 0.000216 0.88 AML other m 2024-05-16T21:37:57.50
IV.INTR.HHE. ML:2.3 0.00020050000000000002 0.98 AML other m 2024-05-16T21:37:57.74
IV.LNSS.HHE. ML:2.3 0.00017549999999999998 0.52 AML other m 2024-05-16T21:37:57.64
IV.RM33.EHN. ML:2.2 0.00016549999999999998 1.26 AML other m 2024-05-16T21:37:59.75
IV.INTR.HHN. ML:2.4 0.000275 0.82 AML other m 2024-05-16T21:37:59.89
IV.LPEL.HHE. ML:2.1 0.0001003 0.46 AML other m 2024-05-16T21:38:00.46
IV.LPEL.HHN. ML:2.1 0.00008669999999999999 0.54 AML other m 2024-05-16T21:38:00.74
IV.LNSS.HHN. ML:2.2 0.0001435 0.42 AML other m 2024-05-16T21:38:02.70
IV.SMA1.EHN. ML:2.4 0.000187 0.92 AML other m 2024-05-16T21:38:05.31
IV.SMA1.EHE. ML:2.4 0.000187 0.74 AML other m 2024-05-16T21:38:06.66
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