Earthquake with magnitude of ML 2.0 on date 23-12-2020 and time 00:14:40 (UTC) in region 2 km W Saracinesco (RM)

A magnitude ML 2.0 earthquake occured in region: 2 km W Saracinesco (RM), on

  • 23-12-2020 00:14:40 (UTC)
  • 23-12-2020 01:14:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.01, 12.93 at 6 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
Saracinesco RM 2 185 185
Sambuci RM 2 925 1110
Mandela RM 3 917 2027
Vicovaro RM 4 4019 6046
Anticoli Corrado RM 5 915 6961
Ciciliano RM 5 1336 8297
Cineto Romano RM 6 601 8898
Roccagiovine RM 6 263 9161
Roviano RM 6 1351 10512
Castel Madama RM 6 7399 17911
Marano Equo RM 7 779 18690
San Polo dei Cavalieri RM 8 2992 21682
Licenza RM 8 1011 22693
Arsoli RM 8 1586 24279
Cerreto Laziale RM 8 1118 25397
Riofreddo RM 8 781 26178
Agosta RM 9 1765 27943
Rocca Canterano RM 10 196 28139
Gerano RM 10 1263 29402
Percile RM 10 255 29657
Oricola AQ 10 1244 30901
Vallinfreda RM 10 283 31184
Marcellina RM 11 7280 38464
San Gregorio da Sassola RM 11 1619 40083
Pisoniano RM 11 770 40853
Canterano RM 11 351 41204
Cervara di Roma RM 11 455 41659
Rocca di Botte AQ 12 856 42515
Casape RM 12 744 43259
Tivoli RM 12 56533 99792
Vivaro Romano RM 12 182 99974
Rocca Santo Stefano RM 13 975 100949
Poli RM 14 2418 103367
Orvinio RI 14 405 103772
Monteflavio RM 14 1348 105120
San Vito Romano RM 14 3273 108393
Camerata Nuova RM 15 447 108840
Pereto AQ 15 682 109522
Palombara Sabina RM 15 13269 122791
Turania RI 16 241 123032
Carsoli AQ 16 5396 128428
Bellegra RM 16 2887 131315
Capranica Prenestina RM 16 351 131666
Subiaco RM 17 9074 140740
Guidonia Montecelio RM 17 88673 229413
Pozzaglia Sabina RI 17 360 229773
Collalto Sabino RI 17 442 230215
Gallicano nel Lazio RM 18 6334 236549
Moricone RM 18 2650 239199
Rocca di Cave RM 18 377 239576
Montorio Romano RM 18 1984 241560
Castel San Pietro Romano RM 18 902 242462
Olevano Romano RM 18 6687 249149
Sant'Angelo Romano RM 18 5018 254167
Roiate RM 18 737 254904
Palestrina RM 19 21672 276576
Scandriglia RI 19 3108 279684
Affile RM 19 1548 281232
Genazzano RM 20 6036 287268

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)
38 Km NE of Velletri (53303 inhabitants)
39 Km E of Roma (2864731 inhabitants)
52 Km NE of Aprilia (73446 inhabitants)
52 Km NE of Pomezia (62966 inhabitants)
54 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)
67 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

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours)

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 2.0 2020-12-23
00:14:40
42.01 12.93 7 2020-12-23
00:26:40
Sala Sismica INGV-Roma 85637831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-23 00:14:40 ± 0.09
Latitude 42.01 ± 0.00
Longitude 12.93 ± 0.01
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85637831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 452
Semi-minor axis of confidence ellipse (meter) 354
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 104
Circular confidence region, given by single value of horizontal uncertainty (meter) 450
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 48
Number of associated phases, regardless of their use for origin computation 50
Number of defining phases 50
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.14209
Epicentral distance of station farthest from the epicenter (degree) 1.08818
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 27
Magnitude information

ML:2

Field Value
Value 2
Uncertainty 0.2
Num. used stations 50
Type of magnitude ML
Reference to an origin 85637831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-23 00:26:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MGAB.HHZ. 2020-12-23T00:15:17.99 0.6 undecidable manual S 326 1.0882 50 1.62 22
IV.ASSB.HHZ. 2020-12-23T00:15:16.42 0.6 undecidable manual S 349 1.054 50 1.07 30
IV.FDMO.HHZ. 2020-12-23T00:15:16.60 0.3 undecidable manual S 6 1.0342 50 1.82 29
IV.CESI.HHZ. 2020-12-23T00:15:14.49 0.6 undecidable manual S 359 0.9964 50 0.82 34
IV.MOMA.HHZ. 2020-12-23T00:15:09.90 0.3 undecidable manual S 342 0.8391 50 0.89 51
IV.CESX.HHZ. 2020-12-23T00:15:04.53 0.6 undecidable manual S 337 0.652 50 1.06 33
IV.GAVE.EHZ. 2020-12-23T00:15:04.49 0.3 undecidable manual S 358 0.6844 50 0.07 68
IV.T0110.HHZ. 2020-12-23T00:15:04.57 0.6 undecidable manual S 70 0.6628 50 0.78 37
IV.POFI.HHZ. 2020-12-23T00:15:03.85 0.3 undecidable manual S 116 0.6484 50 0.5 63
IV.LRP.EHZ. 2020-12-23T00:15:02.21 0.3 undecidable manual S 126 0.6061 50 0.12 69
IV.LNSS.HHZ. 2020-12-23T00:15:02.01 0.3 undecidable manual S 8 0.5998 50 0.1 69
IV.MGAB.HHZ. 2020-12-23T00:15:01.63 0.1 undecidable manual P 326 1.0882 50 0.34 79
IV.ASSB.HHZ. 2020-12-23T00:15:00.30 1.0 undecidable manual P 349 1.054 50 -0.4 20
IV.VVLD.HHZ. 2020-12-23T00:14:59.90 0.3 undecidable manual S 105 0.5315 50 0.02 71
IV.FDMO.HHZ. 2020-12-23T00:14:59.84 0.1 undecidable manual P 6 1.0342 50 -0.52 76
IV.CESI.HHZ. 2020-12-23T00:14:59.48 1.0 undecidable manual P 359 0.9964 50 -0.24 21
IV.MMO1.EHZ. 2020-12-23T00:14:58.38 0.1 undecidable manual P 18 0.9371 50 -0.32 82
IV.GIUL.HHZ. 2020-12-23T00:14:58.62 0.6 undecidable manual S 152 0.509 50 -0.61 41
IV.NRCA.HHZ. 2020-12-23T00:14:56.72 0.3 negative manual P 9 0.8355 50 -0.25 64
IV.MOMA.HHZ. 2020-12-23T00:14:56.60 0.1 positive manual P 342 0.8391 50 -0.43 82
IV.SRES.HHZ. 2020-12-23T00:14:55.02 0.3 undecidable manual S 306 0.3885 50 -0.62 63
IV.INTR.HHZ. 2020-12-23T00:14:55.16 1.0 positive manual P 89 0.7213 50 0.14 22
IV.LAV9.HHZ. 2020-12-23T00:14:55.74 0.6 undecidable manual S 208 0.3732 50 0.54 44
IV.T0110.HHZ. 2020-12-23T00:14:54.16 0.1 undecidable manual P 70 0.6628 50 0.14 90
IV.GUAR.HHZ. 2020-12-23T00:14:54.52 0.3 undecidable manual S 127 0.3534 99 0.04 74
IV.PTQR.HHZ. 2020-12-23T00:14:54.56 0.3 undecidable manual S 88 0.3471 100 0.32 70
IV.POFI.HHZ. 2020-12-23T00:14:53.26 0.1 undecidable manual P 116 0.6484 50 -0.51 84
IV.RDP.HHZ. 2020-12-23T00:14:53.06 0.6 undecidable manual S 214 0.2977 101 0.7 42
IV.SAMA.EHZ. 2020-12-23T00:14:53.58 0.3 undecidable manual S 228 0.3408 100 -0.4 68
IV.CESX.HHZ. 2020-12-23T00:14:53.37 0.1 undecidable manual P 337 0.652 50 -0.47 84
IV.GAVE.EHZ. 2020-12-23T00:14:53.71 0.1 undecidable manual P 358 0.6844 50 -0.67 78
IV.FIAM.HHZ. 2020-12-23T00:14:52.27 0.3 undecidable manual S 28 0.2932 101 0.07 74
IV.VIVA.HHZ. 2020-12-23T00:14:52.39 0.1 undecidable manual S 205 0.2851 102 0.52 89
IV.LRP.EHZ. 2020-12-23T00:14:52.66 0.1 undecidable manual P 126 0.6061 50 -0.38 87
IV.LNSS.HHZ. 2020-12-23T00:14:52.32 0.1 undecidable manual P 8 0.5998 50 -0.62 81
IV.VVLD.HHZ. 2020-12-23T00:14:51.41 0.1 positive manual P 105 0.5315 50 -0.35 89
IV.GIUL.HHZ. 2020-12-23T00:14:50.86 0.3 positive manual P 152 0.509 50 -0.53 64
IV.LAV9.HHZ. 2020-12-23T00:14:49.19 0.3 negative manual P 208 0.3732 50 0.13 72
IV.PTQR.HHZ. 2020-12-23T00:14:48.47 1.0 positive manual P 88 0.3471 100 -0.04 25
IV.SRES.HHZ. 2020-12-23T00:14:48.50 0.6 positive manual P 306 0.3885 50 -0.81 39
IV.GUAR.HHZ. 2020-12-23T00:14:48.69 0.6 negative manual P 127 0.3534 99 0.05 49
IV.RCAV.EHZ. 2020-12-23T00:14:47.63 0.3 undecidable manual S 177 0.161 110 0.36 71
IV.FIAM.HHZ. 2020-12-23T00:14:47.43 0.6 negative manual P 28 0.2932 101 0.1 49
IV.VIVA.HHZ. 2020-12-23T00:14:47.02 0.6 undecidable manual P 205 0.2851 102 -0.12 49
IV.RDP.HHZ. 2020-12-23T00:14:47.46 0.6 positive manual P 214 0.2977 101 0.04 50
IV.SAMA.EHZ. 2020-12-23T00:14:47.96 0.6 positive manual P 228 0.3408 100 -0.4 46
IV.RMP.HHZ. 2020-12-23T00:14:46.66 0.3 negative manual P 221 0.259 103 0.08 74
IV.MTCE.HHZ. 2020-12-23T00:14:46.54 0.3 undecidable manual S 276 0.1421 112 -0.07 76
IV.MTCE.HHZ. 2020-12-23T00:14:44.25 0.1 undecidable manual P 276 0.1421 112 0.15 100
IV.RCAV.EHZ. 2020-12-23T00:14:44.81 0.6 undecidable manual P 177 0.161 110 0.33 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RCAV.EHE. ML:2.2 0.00133 0.52 AML other m 2020-12-23T00:14:50.43
IV.RCAV.EHN. ML:2.1 0.001132 0.52 AML other m 2020-12-23T00:14:51.27
IV.RDP.HHN. ML:2.3 0.000975 0.44 AML other m 2020-12-23T00:14:53.30
IV.RMP.HHE. ML:2.5 0.001675 0.36 AML other m 2020-12-23T00:14:54.67
IV.PTQR.HHN. ML:2 0.0003845 0.32 AML other m 2020-12-23T00:14:55.08
IV.PTQR.HHE. ML:2.2 0.0005785 0.24 AML other m 2020-12-23T00:14:55.10
IV.VIVA.HHE. ML:2.2 0.000841 0.44 AML other m 2020-12-23T00:14:55.45
IV.FIAM.HHN. ML:1.7 0.000222 0.44 AML other m 2020-12-23T00:14:55.11
IV.RMP.HHN. ML:2.5 0.0015 0.26 AML other m 2020-12-23T00:14:55.93
IV.GUAR.HHE. ML:2.1 0.000541 0.92 AML other m 2020-12-23T00:14:56.36
IV.FIAM.HHE. ML:1.6 0.000187 0.6 AML other m 2020-12-23T00:14:56.39
IV.GUAR.HHN. ML:2 0.0003655 0.46 AML other m 2020-12-23T00:14:56.62
IV.RDP.HHE. ML:2.2 0.0007725 0.78 AML other m 2020-12-23T00:14:57.39
IV.SRES.HHE. ML:1.6 0.000127 1.04 AML other m 2020-12-23T00:14:57.59
IV.SRES.HHN. ML:1.6 0.0001335 0.32 AML other m 2020-12-23T00:14:57.79
IV.VIVA.HHN. ML:2.4 0.0010675 0.4 AML other m 2020-12-23T00:14:57.80
IV.VVLD.HHN. ML:1.9 0.0001785 0.32 AML other m 2020-12-23T00:15:00.73
IV.VVLD.HHE. ML:1.9 0.0001695 0.42 AML other m 2020-12-23T00:15:00.90
IV.LAV9.HNN. ML:2.3 0.000746 0.42 AML other m 2020-12-23T00:15:01.03
IV.LAV9.HHN. ML:2.4 0.0007615 0.42 AML other m 2020-12-23T00:15:01.03
IV.GIUL.HHN. ML:1.7 0.00011355 0.64 AML other m 2020-12-23T00:15:01.60
IV.LAV9.HNE. ML:2.4 0.0008 0.42 AML other m 2020-12-23T00:15:02.30
IV.LAV9.HHE. ML:2.4 0.000764 0.42 AML other m 2020-12-23T00:15:02.30
IV.LRP.EHE. ML:1.8 0.000126 0.14 AML other m 2020-12-23T00:15:02.50
IV.LRP.EHN. ML:1.4 4.115E-5 0.14 AML other m 2020-12-23T00:15:02.63
IV.CESX.HHE. ML:1.9 0.0001255 0.34 AML other m 2020-12-23T00:15:04.71
IV.GIUL.HHE. ML:1.7 0.0001075 0.48 AML other m 2020-12-23T00:15:05.40
IV.LNSS.HHE. ML:1.9 0.0001355 0.8 AML other m 2020-12-23T00:15:05.19
IV.GAVE.EHN. ML:2 0.000156 0.78 AML other m 2020-12-23T00:15:05.52
IV.POFI.HHN. ML:1.4 4.29E-5 0.36 AML other m 2020-12-23T00:15:06.30
IV.CESX.HHN. ML:1.9 0.000123 1.38 AML other m 2020-12-23T00:15:06.22
IV.POFI.HHE. ML:1.6 5.935E-5 0.2 AML other m 2020-12-23T00:15:06.80
IV.T0110.HHN. ML:2.1 0.00021 0.42 AML other m 2020-12-23T00:15:06.96
IV.T0110.HHE. ML:2 0.0001545 0.36 AML other m 2020-12-23T00:15:07.05
IV.LNSS.HHN. ML:1.9 0.000157 0.4 AML other m 2020-12-23T00:15:08.25
IV.GAVE.EHE. ML:2.1 0.0001755 0.62 AML other m 2020-12-23T00:15:09.81
IV.MOMA.HHE. ML:2.1 0.0001495 0.96 AML other m 2020-12-23T00:15:11.69
IV.INTR.HHE. ML:1.9 0.000112 0.42 AML other m 2020-12-23T00:15:12.72
IV.NRCA.HHE. ML:1.9 8.36E-5 0.18 AML other m 2020-12-23T00:15:12.63
IV.MOMA.HHN. ML:2 0.000112 0.3 AML other m 2020-12-23T00:15:12.68
IV.NRCA.HHN. ML:1.8 6.325E-5 0.56 AML other m 2020-12-23T00:15:14.56
IV.CESI.HHN. ML:2.1 0.000107 0.44 AML other m 2020-12-23T00:15:15.88
IV.INTR.HHN. ML:2.1 0.000168 1.5 AML other m 2020-12-23T00:15:17.90
IV.CESI.HHE. ML:1.9 7.145E-5 0.52 AML other m 2020-12-23T00:15:18.66
IV.ASSB.HHN. ML:1.8 4.545E-5 1.62 AML other m 2020-12-23T00:15:20.07
IV.MGAB.HHE. ML:2 7.64E-5 1.1 AML other m 2020-12-23T00:15:20.31
IV.FDMO.HHE. ML:1.7 4.14E-5 0.9 AML other m 2020-12-23T00:15:20.07
IV.MGAB.HHN. ML:1.8 4.995E-5 0.54 AML other m 2020-12-23T00:15:22.68
IV.FDMO.HHN. ML:1.6 3.585E-5 0.82 AML other m 2020-12-23T00:15:23.01
IV.ASSB.HHE. ML:1.8 5.165E-5 1.42 AML other m 2020-12-23T00:15:23.07
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
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 full SEED format Download