Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 28-01-2021 and time 09:39:38 (UTC) in region 2 km NW Saracinesco (RM)

A magnitude ML 1.9 earthquake occured in region: 2 km NW Saracinesco (RM), on

  • 28-01-2021 09:39:38 (UTC)
  • 28-01-2021 10:39:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.0160, 12.9360 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
Saracinesco RM 2 185 185
Mandela RM 2 917 1102
Sambuci RM 3 925 2027
Vicovaro RM 4 4019 6046
Anticoli Corrado RM 5 915 6961
Cineto Romano RM 5 601 7562
Roccagiovine RM 5 263 7825
Roviano RM 5 1351 9176
Ciciliano RM 6 1336 10512
Castel Madama RM 7 7399 17911
Licenza RM 7 1011 18922
Marano Equo RM 7 779 19701
Arsoli RM 7 1586 21287
Riofreddo RM 7 781 22068
San Polo dei Cavalieri RM 8 2992 25060
Cerreto Laziale RM 9 1118 26178
Agosta RM 9 1765 27943
Percile RM 9 255 28198
Vallinfreda RM 9 283 28481
Oricola AQ 9 1244 29725
Rocca Canterano RM 10 196 29921
Gerano RM 10 1263 31184
Marcellina RM 11 7280 38464
Rocca di Botte AQ 11 856 39320
Vivaro Romano RM 11 182 39502
Cervara di Roma RM 11 455 39957
Canterano RM 12 351 40308
San Gregorio da Sassola RM 12 1619 41927
Pisoniano RM 12 770 42697
Tivoli RM 13 56533 99230
Casape RM 13 744 99974
Orvinio RI 13 405 100379
Monteflavio RM 14 1348 101727
Rocca Santo Stefano RM 14 975 102702
Camerata Nuova RM 14 447 103149
Pereto AQ 15 682 103831
Poli RM 15 2418 106249
Turania RI 15 241 106490
Palombara Sabina RM 15 13269 119759
Carsoli AQ 15 5396 125155
San Vito Romano RM 15 3273 128428
Pozzaglia Sabina RI 16 360 128788
Collalto Sabino RI 16 442 129230
Bellegra RM 17 2887 132117
Subiaco RM 17 9074 141191
Capranica Prenestina RM 17 351 141542
Montorio Romano RM 17 1984 143526
Guidonia Montecelio RM 17 88673 232199
Moricone RM 17 2650 234849
Scandriglia RI 18 3108 237957
Sant'Angelo Romano RM 18 5018 242975
Gallicano nel Lazio RM 19 6334 249309
Rocca di Cave RM 19 377 249686
Roiate RM 19 737 250423
Olevano Romano RM 19 6687 257110
Castel San Pietro Romano RM 19 902 258012
Nespolo RI 19 246 258258
Collegiove RI 20 213 258471
Affile RM 20 1548 260019
Palestrina RM 20 21672 281691
Paganico Sabino RI 20 172 281863

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km E of Tivoli (56533 inhabitants)
17 Km E of Guidonia Montecelio (88673 inhabitants)
39 Km NE of Velletri (53303 inhabitants)
40 Km E of Roma (2864731 inhabitants)
53 Km NE of Aprilia (73446 inhabitants)
53 Km NE of Pomezia (62966 inhabitants)
53 Km SW of L'Aquila (69753 inhabitants)
61 Km N of Latina (125985 inhabitants)
64 Km E of Fiumicino (78395 inhabitants)
65 Km SE of Terni (111501 inhabitants)
68 Km NE of Anzio (54211 inhabitants)
82 Km SE of Viterbo (67173 inhabitants)
95 Km E of Civitavecchia (52991 inhabitants)
96 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 1.9 2021-01-28
09:39:38		 42.0163 12.9357 9 2021-07-12
16:54:58		 Bollettino Sismico Italiano INGV 86994281
Reviewed
Rev100 		ML 2.0 2021-01-28
09:39:38		 42.0047 12.8987 11 2021-01-28
09:46:28		 Sala Sismica INGV-Roma 86651111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-28 09:39:38 ± 0.06
Latitude 42.0163 ± 0.0027
Longitude 12.9357 ± 0.0048
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86994281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 313
Semi-minor axis of confidence ellipse (meter) 272
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 285
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 46
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.69608
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 86994281
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-15 15:10:03

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 86651111
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-28 09:46:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ISPIC.HNZ. 2021-01-28T09:40:47.48 3.0 negative manual Pn 0.87 0
IV.EUCT.HNZ. 2021-01-28T09:40:38.47 3.0 undecidable manual Sg 4.13 0
IV.IFIL.HHZ. 2021-01-28T09:40:38.52 3.0 positive manual Pg 14.2 0
IV.COLB.HHZ. 2021-01-28T09:40:37.07 3.0 undecidable manual Sn -2.18 0
IV.LPEL.HHZ. 2021-01-28T09:40:36.59 3.0 undecidable manual Sg 6.76 0
IV.MMUR.HNZ. 2021-01-28T09:40:22.48 3.0 undecidable manual Sg 8.26 0
IV.FDMO.HHZ. 2021-01-28T09:40:14.38 3.0 undecidable manual Sg 2.61 0
IV.FOSV.EHZ. 2021-01-28T09:40:11.74 3.0 undecidable manual Sg 2.93 0
MN.VLC.HHZ. 2021-01-28T09:40:00.33 3.0 undecidable manual Sn -4.76 0
IV.LNSS.HNZ. 2021-01-28T09:39:59.06 0.3 undecidable manual S 7 65.6898 50 0.22 66
IV.VVLD.HHZ. 2021-01-28T09:39:57.44 0.6 undecidable manual S 106 58.9965 50 0.36 43
IV.GIUL.HHZ. 2021-01-28T09:39:56.49 0.6 undecidable manual S 152 57.2982 50 -0.12 45
IV.LATB.EHZ. 2021-01-28T09:39:56.24 0.6 undecidable manual S 178 57.9975 50 -0.56 41
IT.ACQ.HGZ. 2021-01-28T09:39:55.27 3.0 negative manual Pn 1.44 0
IV.LAV9.HNZ. 2021-01-28T09:39:53.40 0.3 undecidable manual S 208 42.3243 50 0.77 58
IV.TOLF.HHN. 2021-01-28T09:39:52.30 0.6 undecidable manual P 274 77.2671 50 0.35 42
IV.SMA1.EHN. 2021-01-28T09:39:52.26 0.6 undecidable manual P 26 75.5688 50 0.56 39
IV.PTQR.HHZ. 2021-01-28T09:39:52.02 0.6 undecidable manual S 89 38.3283 50 0.47 44
IV.BARO.HNZ. 2021-01-28T09:39:51.99 0.6 undecidable manual P 290 77.1672 50 0.05 44
IV.CESX.HHE. 2021-01-28T09:39:51.02 0.6 undecidable manual P 337 71.6727 50 -0.07 45
IV.GUAR.HHZ. 2021-01-28T09:39:51.93 0.6 undecidable manual S 128 39.627 50 0.02 48
IV.MA9.HHN. 2021-01-28T09:39:51.20 0.3 undecidable manual S 220 35.6421 50 0.37 67
IV.SAMA.EHZ. 2021-01-28T09:39:51.22 0.3 undecidable manual S 227 38.5281 50 -0.4 66
IV.VIVA.HHN. 2021-01-28T09:39:50.54 0.3 undecidable manual S 205 32.5452 105 0.58 64
IV.CAMP.HHE. 2021-01-28T09:39:50.54 0.3 undecidable manual P 34 69.4749 50 -0.22 65
IV.LRP.EHZ. 2021-01-28T09:39:50.20 0.3 undecidable manual P 127 67.5768 50 -0.27 65
IV.POFI.HNE. 2021-01-28T09:39:50.90 0.1 undecidable manual P 117 72.1722 50 -0.27 86
IT.MMP1.HGZ. 2021-01-28T09:39:49.16 0.3 undecidable manual S 329 30.0477 106 0.01 73
IV.FIAM.HHZ. 2021-01-28T09:39:49.77 0.6 undecidable manual S 28 31.6461 105 0.09 48
IV.VVLD.HHZ. 2021-01-28T09:39:49.02 0.1 undecidable manual P 106 58.9965 50 -0.12 91
IV.LNSS.HNZ. 2021-01-28T09:39:49.95 0.3 undecidable manual P 7 65.6898 50 -0.21 66
IV.FAGN.HHZ. 2021-01-28T09:39:49.67 1.0 undecidable manual P 62 60.0954 50 0.37 21
IV.ARRO.EHZ. 2021-01-28T09:39:49.79 0.3 undecidable manual P 347 63.9915 50 -0.12 67
IV.RMP.HHZ. 2021-01-28T09:39:48.77 0.3 undecidable manual S 220 29.6481 106 -0.22 70
IV.NDIM.HHZ. 2021-01-28T09:39:48.78 3.0 negative manual Pn -2.49 0
IV.LATB.EHZ. 2021-01-28T09:39:48.49 0.3 undecidable manual P 178 57.9975 50 -0.49 63
IV.GIUL.HHZ. 2021-01-28T09:39:48.52 0.1 undecidable manual P 152 57.2982 50 -0.35 87
IV.MA9.HHN. 2021-01-28T09:39:46.04 0.3 undecidable manual P 220 35.6421 50 0.5 65
IV.SAMA.EHZ. 2021-01-28T09:39:46.07 0.3 undecidable manual P 227 38.5281 50 0.08 71
IV.PTQR.HHZ. 2021-01-28T09:39:46.10 0.1 undecidable manual P 89 38.3283 50 0.15 93
IV.SRES.HHN. 2021-01-28T09:39:46.19 0.3 undecidable manual P 305 42.7239 50 -0.44 65
IV.GUAR.HHZ. 2021-01-28T09:39:46.06 0.1 undecidable manual P 128 39.627 50 -0.1 94
IV.LAV9.HNZ. 2021-01-28T09:39:46.26 0.3 undecidable manual P 208 42.3243 50 -0.31 67
IV.VIVA.HHN. 2021-01-28T09:39:45.35 0.3 undecidable manual P 205 32.5452 105 0.32 68
IV.RCAV.EHZ. 2021-01-28T09:39:45.36 0.6 undecidable manual S 178 18.7701 114 -0.09 49
IV.FIAM.HHZ. 2021-01-28T09:39:44.92 0.1 undecidable manual P 28 31.6461 105 0.05 96
IV.MTCE.HHZ. 2021-01-28T09:39:44.20 0.6 undecidable manual S 273 15.9729 118 -0.37 46
IV.RMP.HHZ. 2021-01-28T09:39:44.26 0.3 undecidable manual P 220 29.6481 106 -0.21 70
IT.MMP1.HGZ. 2021-01-28T09:39:44.66 0.3 undecidable manual P 329 30.0477 106 0.1 72
IV.PE3.EHZ. 2021-01-28T09:39:43.89 3.0 negative manual Pn -0.09 0
IV.FOSV.EHZ. 2021-01-28T09:39:42.96 3.0 undecidable manual P -0.12 0
IV.RCAV.EHZ. 2021-01-28T09:39:42.56 0.1 undecidable manual P 178 18.7701 114 0.13 97
IV.MTCE.HHZ. 2021-01-28T09:39:41.93 0.1 undecidable manual P 273 15.9729 118 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTCE.HHE. ML:2.3 0.001865 0.3 AML other m 2021-01-28T09:39:44.35
IV.MTCE.HHN. ML:2.1 0.00122 0.36 AML other m 2021-01-28T09:39:44.52
IV.RCAV.EHN. ML:1.7 0.0004091861 0.1984 AML other m 2021-01-28T09:39:45.49
IV.RCAV.EHE. ML:1.8 0.000542422 0.32 AML other m 2021-01-28T09:39:45.88
IV.FIAM.HHE. ML:1.7 0.00022932225000000002 0.6208 AML other m 2021-01-28T09:39:50.18
IV.FIAM.HNN. ML:2.0 0.00049467645 0.416 AML other m 2021-01-28T09:39:51.48
IV.FIAM.HHN. ML:1.8 0.00028477660000000003 0.416 AML other m 2021-01-28T09:39:51.27
IV.GUAR.HHN. ML:1.9 0.00026080210000000006 0.32 AML other m 2021-01-28T09:39:52.29
IV.PTQR.HHN. ML:2.0 0.00040849999999999995 0.32 AML other m 2021-01-28T09:39:52.74
IV.PTQR.HHE. ML:2.0 0.0003815 0.24 AML other m 2021-01-28T09:39:52.86
IV.GUAR.HHE. ML:2.2 0.0005679999999999999 0.56 AML other m 2021-01-28T09:39:52.66
IV.GIUL.HHN. ML:1.4 0.000058266419999999996 0.2432 AML other m 2021-01-28T09:39:56.66
IV.VVLD.HHE. ML:1.6 0.00009007859500000001 0.8192 AML other m 2021-01-28T09:39:58.06
IV.VVLD.HHN. ML:1.9 0.0001593187 0.2624 AML other m 2021-01-28T09:39:57.88
IV.LRP.EHN. ML:1.1 0.00002038822 0.4544 AML other m 2021-01-28T09:40:00.16
IV.LRP.EHE. ML:1.9 0.0001297274 0.7168 AML other m 2021-01-28T09:40:02.06
IV.FDMO.HHN. ML:1.6 0.000029746925 0.416 AML other m 2021-01-28T09:40:15.22
IV.FDMO.HHE. ML:1.9 0.00006484999999999999 0.36 AML other m 2021-01-28T09:40:15.42
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