Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 24-12-2020 and time 12:01:38 (UTC) in region 2 km NW Sambuci (RM)

A magnitude ML 1.5 earthquake occured in region: 2 km NW Sambuci (RM), on

  • 24-12-2020 12:01:38 (UTC)
  • 24-12-2020 13:01:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0030, 12.9290 at 8 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
Sambuci RM 2 925 925
Saracinesco RM 2 185 1110
Vicovaro RM 3 4019 5129
Mandela RM 3 917 6046
Ciciliano RM 5 1336 7382
Anticoli Corrado RM 5 915 8297
Castel Madama RM 6 7399 15696
Roccagiovine RM 6 263 15959
Roviano RM 6 1351 17310
Cineto Romano RM 6 601 17911
San Polo dei Cavalieri RM 7 2992 20903
Marano Equo RM 7 779 21682
Cerreto Laziale RM 8 1118 22800
Licenza RM 8 1011 23811
Arsoli RM 9 1586 25397
Riofreddo RM 9 781 26178
Agosta RM 9 1765 27943
Gerano RM 9 1263 29206
Rocca Canterano RM 10 196 29402
Marcellina RM 10 7280 36682
San Gregorio da Sassola RM 10 1619 38301
Percile RM 10 255 38556
Oricola AQ 11 1244 39800
Vallinfreda RM 11 283 40083
Pisoniano RM 11 770 40853
Casape RM 11 744 41597
Canterano RM 11 351 41948
Tivoli RM 12 56533 98481
Cervara di Roma RM 12 455 98936
Rocca di Botte AQ 12 856 99792
Vivaro Romano RM 13 182 99974
Rocca Santo Stefano RM 13 975 100949
Poli RM 13 2418 103367
San Vito Romano RM 14 3273 106640
Orvinio RI 14 405 107045
Monteflavio RM 15 1348 108393
Camerata Nuova RM 15 447 108840
Palombara Sabina RM 15 13269 122109
Pereto AQ 16 682 122791
Capranica Prenestina RM 16 351 123142
Bellegra RM 16 2887 126029
Carsoli AQ 17 5396 131425
Turania RI 17 241 131666
Subiaco RM 17 9074 140740
Guidonia Montecelio RM 17 88673 229413
Gallicano nel Lazio RM 17 6334 235747
Rocca di Cave RM 17 377 236124
Castel San Pietro Romano RM 18 902 237026
Pozzaglia Sabina RI 18 360 237386
Collalto Sabino RI 18 442 237828
Moricone RM 18 2650 240478
Olevano Romano RM 18 6687 247165
Montorio Romano RM 18 1984 249149
Sant'Angelo Romano RM 18 5018 254167
Roiate RM 18 737 254904
Palestrina RM 18 21672 276576
Affile RM 19 1548 278124
Genazzano RM 19 6036 284160
Scandriglia RI 19 3108 287268
Zagarolo RM 20 17843 305111

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km E of Tivoli (56533 inhabitants)
17 Km E of Guidonia Montecelio (88673 inhabitants)
37 Km NE of Velletri (53303 inhabitants)
39 Km E of Roma (2864731 inhabitants)
51 Km NE of Aprilia (73446 inhabitants)
51 Km NE of Pomezia (62966 inhabitants)
55 Km SW of L'Aquila (69753 inhabitants)
60 Km N of Latina (125985 inhabitants)
63 Km E of Fiumicino (78395 inhabitants)
66 Km SE of Terni (111501 inhabitants)
66 Km NE of Anzio (54211 inhabitants)
82 Km SE of Viterbo (67173 inhabitants)
94 Km E of Civitavecchia (52991 inhabitants)
97 Km SW of Teramo (54892 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 2020-12-24
12:01:38		 42.0033 12.9288 8 2021-02-26
14:56:14		 Bollettino Sismico Italiano INGV 86096931
Reviewed
Rev100 		ML 1.5 2020-12-24
12:01:37		 42.0018 12.8872 11 2020-12-24
12:11:07		 Sala Sismica INGV-Roma 85674431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-24 12:01:38 ± 0.08
Latitude 42.0033 ± 0.0036
Longitude 12.9288 ± 0.0061
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86096931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 412
Semi-minor axis of confidence ellipse (meter) 331
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 55
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.84087
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 86096931
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-08 14:45:02

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 85674431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-24 12:11:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
XK.GIZZ.HHZ. 2020-12-24T12:03:26.41 3.0 undecidable manual Sn -3.74 0
IV.IMI.HHZ. 2020-12-24T12:03:24.15 3.0 undecidable manual Sg 20.32 0
CR.ZAG.BHZ. 2020-12-24T12:03:19.86 3.0 undecidable manual Sn -7.43 0
IV.PZUN.HHZ. 2020-12-24T12:03:02.04 3.0 undecidable manual Sg 4.48 0
OT.OT14.EHZ. 2020-12-24T12:02:52.02 3.0 undecidable manual Sg 4.18 0
IV.RAVA.EHZ. 2020-12-24T12:02:45.44 3.0 undecidable manual Sg 5.13 0
IV.IACL.HHZ. 2020-12-24T12:02:45.80 3.0 undecidable manual Pg 13.73 0
CR.ZAG.BHZ. 2020-12-24T12:02:39.38 3.0 negative manual Pg 3.4 0
IV.MILZ.HHZ. 2020-12-24T12:02:36.45 3.0 undecidable manual Pn -3.02 0
GU.GSCL.HHZ. 2020-12-24T12:02:35.93 3.0 undecidable manual Sg 0.94 0
IV.MAGA.HHZ. 2020-12-24T12:02:28.84 3.0 undecidable manual Pg 4.47 0
OT.TAR1.HHZ. 2020-12-24T12:02:28.99 3.0 negative manual Pn -4.56 0
IV.PTRJ.HNZ. 2020-12-24T12:02:23.75 3.0 undecidable manual Sn -4.5 0
IV.FIR.HHZ. 2020-12-24T12:02:19.65 3.0 undecidable manual Sg 2.58 0
IX.STN3.HHZ.02 2020-12-24T12:02:12.77 3.0 undecidable manual Pn -6.06 0
IV.NARO.HHZ. 2020-12-24T12:02:10.68 3.0 undecidable manual Sg 0.13 0
IV.GAVE.EHN. 2020-12-24T12:02:01.95 0.6 undecidable manual S 358 76.4679 50 0.32 42
IV.MAON.HHZ. 2020-12-24T12:02:01.31 3.0 undecidable manual Sg 4.14 0
IV.CESX.HHE. 2020-12-24T12:02:01.32 0.6 undecidable manual S 337 72.7716 50 0.68 38
IV.PTRJ.HHZ. 2020-12-24T12:02:00.56 3.0 undecidable manual Pn -2.25 0
IV.RIBO.EHZ.01 2020-12-24T12:02:00.97 3.0 undecidable manual Sn -2.43 0
IV.LNSS.HNZ. 2020-12-24T12:01:59.40 0.6 undecidable manual S 8 67.1772 50 0.26 44
IV.LRP.EHZ. 2020-12-24T12:01:59.54 0.6 undecidable manual S 126 67.1772 50 0.38 43
IV.CRTC.HHZ. 2020-12-24T12:01:58.98 3.0 positive manual Pg 3.13 0
IV.LATB.EHZ. 2020-12-24T12:01:55.83 0.6 undecidable manual S 177 56.5989 50 -0.49 43
IV.GIUL.HHZ. 2020-12-24T12:01:55.84 0.3 undecidable manual S 151 56.1993 50 -0.38 65
IV.NRCA.HHZ. 2020-12-24T12:01:53.92 0.6 undecidable manual P 9 93.3399 50 -0.34 41
IV.PTQR.HHZ. 2020-12-24T12:01:52.02 0.3 undecidable manual S 87 38.9277 50 0.41 67
IV.RIBO.EHZ.01 2020-12-24T12:01:52.29 3.0 undecidable manual Pg 3.44 0
IV.SMA1.EHN. 2020-12-24T12:01:52.72 0.6 undecidable manual P 25 77.1672 50 0.95 34
IV.SRES.HHE. 2020-12-24T12:01:52.75 0.3 undecidable manual S 307 43.1235 50 0.03 72
IV.TOLF.HHN. 2020-12-24T12:01:52.57 0.6 undecidable manual P 275 76.7676 50 0.86 35
IV.GAVE.EHN. 2020-12-24T12:01:51.23 0.3 undecidable manual P 358 76.4679 50 -0.43 62
IV.GUAR.HHZ. 2020-12-24T12:01:51.76 0.3 undecidable manual S 126 39.2274 50 0.08 72
IV.LRP.EHZ. 2020-12-24T12:01:50.00 0.3 undecidable manual P 126 67.1772 50 -0.23 66
IV.LNSS.HNZ. 2020-12-24T12:01:50.06 0.1 undecidable manual P 8 67.1772 50 -0.16 89
IV.CESX.HHE. 2020-12-24T12:01:50.90 0.6 undecidable manual P 337 72.7716 50 -0.19 44
IV.FIAM.HHZ. 2020-12-24T12:01:49.79 0.3 undecidable manual S 28 33.2445 103 -0.1 72
IV.ARRO.EHZ. 2020-12-24T12:01:49.55 0.6 undecidable manual P 348 65.2902 50 -0.38 43
IV.MAON.HHZ. 2020-12-24T12:01:49.93 3.0 undecidable manual Pg 4.58 0
IV.VVLD.HHZ. 2020-12-24T12:01:48.56 0.3 undecidable manual P 104 59.1963 50 -0.44 64
IV.GIUL.HHZ. 2020-12-24T12:01:48.16 0.1 undecidable manual P 151 56.1993 50 -0.38 87
IV.RMP.HHN. 2020-12-24T12:01:48.51 0.6 undecidable manual S 221 28.1496 106 0.33 46
IV.LATB.EHZ. 2020-12-24T12:01:48.69 0.3 undecidable manual P 177 56.5989 50 0.1 69
IV.TERO.HHZ. 2020-12-24T12:01:47.05 3.0 undecidable manual Pn -3.17 0
IV.SRES.HHE. 2020-12-24T12:01:46.41 0.3 undecidable manual P 307 43.1235 50 -0.11 71
IV.GUAR.HHZ. 2020-12-24T12:01:45.89 0.3 undecidable manual P 126 39.2274 50 -0.03 73
IV.PTQR.HHZ. 2020-12-24T12:01:45.91 0.1 undecidable manual P 87 38.9277 50 0.04 97
IV.RCAV.EHZ. 2020-12-24T12:01:44.78 0.3 undecidable manual S 176 17.3715 114 0.12 74
IV.FIAM.HHZ. 2020-12-24T12:01:44.85 0.1 undecidable manual P 28 33.2445 103 -0.03 98
IV.RMP.HHN. 2020-12-24T12:01:44.38 0.6 undecidable manual P 221 28.1496 106 0.48 45
IV.MTCE.HHZ. 2020-12-24T12:01:43.67 0.3 undecidable manual S 278 15.5733 117 -0.41 70
IV.RCAV.EHZ. 2020-12-24T12:01:42.36 0.3 undecidable manual P 176 17.3715 114 0.5 68
IV.MTCE.HHZ. 2020-12-24T12:01:41.46 0.1 undecidable manual P 278 15.5733 117 -0.07 100
IV.MCIV.CHZ. 2020-12-24T12:01:41.75 3.0 undecidable manual P -0.11 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTCE.HHE. ML:1.7 0.000589 1.58 AML other m 2020-12-24T12:01:44.01
IV.MTCE.HHN. ML:1.3 0.00018099999999999998 0.84 AML other m 2020-12-24T12:01:44.43
IV.FIAM.HHN. ML:1.1 0.00005485 0.78 AML other m 2020-12-24T12:01:51.67
IV.PTQR.HHE. ML:1.4 0.0001 0.2 AML other m 2020-12-24T12:01:52.54
IV.PTQR.HHN. ML:1.5 0.00011355 0.32 AML other m 2020-12-24T12:01:52.60
IV.GUAR.HHE. ML:1.5 0.00010550000000000002 1.58 AML other m 2020-12-24T12:01:52.16
IV.VIVA.HHN. ML:2.0 0.000513 0.34 AML other m 2020-12-24T12:01:52.99
IV.GUAR.HHN. ML:1.4 0.00009975 1.16 AML other m 2020-12-24T12:01:53.91
IV.FIAM.HHE. ML:1.0 0.000045600000000000004 0.48 AML other m 2020-12-24T12:01:54.28
IV.VIVA.HHE. ML:2.2 0.0007170000000000001 0.28 AML other m 2020-12-24T12:02:03.86
IV.LRP.EHN. ML:0.9 0.000012549999999999998 0.88 AML other m 2020-12-24T12:02:04.55
IV.LRP.EHE. ML:1.3 0.000034049999999999994 1.02 AML other m 2020-12-24T12:02:05.81
IV.TERO.HHE. ML:1.8 0.00008730000000000001 0.24 AML other m 2020-12-24T12:02:10.86
IV.TERO.HHN. ML:2.0 0.00011585000000000001 0.96 AML other m 2020-12-24T12:02:29.66
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