Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 21-06-2020 and time 02:10:30 (UTC) in region 1 km SE Fiano Romano (RM)

A magnitude ML 1.2 earthquake occured in region: 1 km SE Fiano Romano (RM), on

  • 21-06-2020 02:10:30 (UTC)
  • 21-06-2020 04:10:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.1690, 12.5960 at 9 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Fiano Romano RM 1 15360 15360
Civitella San Paolo RM 3 2066 17426
Capena RM 6 10592 28018
Nazzano RM 7 1436 29454
Torrita Tiberina RM 8 1089 30543
Morlupo RM 8 8696 39239
Castelnuovo di Porto RM 9 8630 47869
Sant'Oreste RM 10 3687 51556
Filacciano RM 10 477 52033
Ponzano Romano RM 10 1155 53188
Riano RM 10 10466 63654
Rignano Flaminio RM 11 10277 73931
Montopoli di Sabina RI 12 4210 78141
Fara in Sabina RI 12 13742 91883
Montelibretti RM 12 5323 97206
Poggio Mirteto RI 13 6315 103521
Magliano Romano RM 13 1448 104969
Monterotondo RM 13 40830 145799
Toffia RI 14 1058 146857
Sacrofano RM 14 7740 154597
Faleria VT 14 2179 156776
Castelnuovo di Farfa RI 14 1059 157835
Forano RI 15 3179 161014
Stimigliano RI 15 2328 163342
Calcata VT 15 918 164260
Mentana RM 15 22921 187181
Mompeo RI 16 530 187711
Moricone RM 16 2650 190361
Nerola RM 16 1926 192287
Salisano RI 16 567 192854
Poggio Catino RI 16 1341 194195
Cantalupo in Sabina RI 16 1685 195880
Mazzano Romano RM 17 3165 199045
Selci RI 17 1106 200151
Poggio Nativo RI 17 2622 202773
Campagnano di Roma RM 18 11571 214344
Montorio Romano RM 18 1984 216328
Sant'Angelo Romano RM 18 5018 221346
Palombara Sabina RM 18 13269 234615
Frasso Sabino RI 19 743 235358
Formello RM 19 12918 248276
Roccantica RI 19 563 248839
Collevecchio RI 19 1577 250416
Fonte Nuova RM 19 32562 282978
Casaprota RI 20 744 283722
Casperia RI 20 1246 284968

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NW of Guidonia Montecelio (88673 inhabitants)
28 Km NW of Tivoli (56533 inhabitants)
32 Km N of Roma (2864731 inhabitants)
44 Km S of Terni (111501 inhabitants)
49 Km SE of Viterbo (67173 inhabitants)
53 Km NE of Fiumicino (78395 inhabitants)
56 Km N of Velletri (53303 inhabitants)
56 Km N of Pomezia (62966 inhabitants)
64 Km N of Aprilia (73446 inhabitants)
67 Km E of Civitavecchia (52991 inhabitants)
69 Km W of L'Aquila (69753 inhabitants)
80 Km N of Anzio (54211 inhabitants)
82 Km NW of Latina (125985 inhabitants)
88 Km S of Foligno (57155 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 1.2 2020-06-21
02:10:30		 42.1687 12.596 9 2020-11-19
12:37:03		 Bollettino Sismico Italiano INGV 83524731
Reviewed
Rev100 		ML 1.2 2020-06-21
02:10:30		 42.1552 12.5853 9 2020-06-21
02:36:54		 Sala Sismica INGV-Roma 80361571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-06-21 02:10:30 ± 0.09
Latitude 42.1687 ± 0.0045
Longitude 12.5960 ± 0.0073
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 83524731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 624
Semi-minor axis of confidence ellipse (meter) 92
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.09353
Epicentral distance of station farthest from the epicenter (degree) 0.82468
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 83524731
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-05 12:48:53

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 80361571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-06-21 02:36:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2020-06-21T02:10:57.00 0.6 undecidable manual S 30 85.0482 50 0.88 35
IV.LNSS.HNZ. 2020-06-21T02:10:49.32 0.6 undecidable manual S 37 60.3951 50 -0.2 45
IV.CESX.HHZ. 2020-06-21T02:10:47.17 0.6 undecidable manual S 359 48.8178 50 0.74 40
IV.ARRO.EHZ. 2020-06-21T02:10:46.39 0.6 undecidable manual S 17 47.619 50 0.27 46
IV.MGAB.HHZ. 2020-06-21T02:10:46.71 0.6 undecidable manual P 335 91.5417 50 0.43 41
IV.BARO.HNN. 2020-06-21T02:10:45.32 0.3 undecidable manual S 281 45.621 50 -0.27 69
IV.FIAM.HNN. 2020-06-21T02:10:45.22 0.6 undecidable manual S 75 44.2224 50 0.01 49
IV.NRCA.HHZ. 2020-06-21T02:10:45.06 0.3 undecidable manual P 30 85.0482 50 -0.23 64
IV.MA9.HHN. 2020-06-21T02:10:45.65 0.6 undecidable manual S 173 44.5221 50 0.35 45
IV.RMP.HHZ. 2020-06-21T02:10:45.16 0.6 undecidable manual S 167 40.5261 50 0.92 37
IV.CERT.HHZ. 2020-06-21T02:10:43.82 0.6 undecidable manual S 127 40.0266 50 -0.28 46
IV.LNSS.HNZ. 2020-06-21T02:10:41.06 0.1 undecidable manual P 37 60.3951 50 -0.42 86
IV.RDP.HHE. 2020-06-21T02:10:39.83 0.3 undecidable manual P 168 46.2204 50 0.52 65
IV.ARRO.EHZ. 2020-06-21T02:10:39.16 0.1 undecidable manual P 17 47.619 50 -0.35 90
IV.RCAV.EHN. 2020-06-21T02:10:39.78 1.0 undecidable manual P 141 45.8208 50 0.54 21
IV.MA9.HHN. 2020-06-21T02:10:39.39 1.0 undecidable manual P 173 44.5221 50 0.35 23
IV.CESX.HHZ. 2020-06-21T02:10:39.48 0.3 undecidable manual P 359 48.8178 50 -0.22 69
IV.RMP.HHZ. 2020-06-21T02:10:38.78 0.6 undecidable manual P 167 40.5261 50 0.35 46
IV.BARO.HNN. 2020-06-21T02:10:38.82 0.3 undecidable manual P 281 45.621 50 -0.39 67
IV.FIAM.HNN. 2020-06-21T02:10:38.67 0.3 undecidable manual P 75 44.2224 50 -0.32 68
IV.SAMA.EHZ. 2020-06-21T02:10:38.53 0.3 undecidable manual P 180 43.0236 50 -0.28 69
IV.CERT.HHZ. 2020-06-21T02:10:37.93 0.3 undecidable manual P 127 40.0266 50 -0.42 67
IT.MMP1.HGZ. 2020-06-21T02:10:37.03 0.6 undecidable manual S 54 15.3735 120 0.35 48
IV.MTCE.HHZ. 2020-06-21T02:10:37.92 0.3 undecidable manual S 143 20.1687 114 -0.24 72
IV.SRES.HHZ. 2020-06-21T02:10:35.35 0.3 undecidable manual S 317 10.3785 131 0.09 76
IV.MTCE.HHZ. 2020-06-21T02:10:34.82 0.1 positive manual P 143 20.1687 114 -0.1 99
IT.MMP1.HGZ. 2020-06-21T02:10:34.24 0.3 undecidable manual P 54 15.3735 120 0.17 74
IV.SRES.HHZ. 2020-06-21T02:10:33.40 0.1 undecidable manual P 317 10.3785 131 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SRES.HHN. ML:1.2 0.0002145 0.88 AML other m 2020-06-21T02:10:35.64
IV.SRES.HHE. ML:1.1 0.00017649999999999998 0.32 AML other m 2020-06-21T02:10:35.77
IV.MTCE.HHN. ML:1.1 0.00009135 0.42 AML other m 2020-06-21T02:10:38.37
IV.MTCE.HHE. ML:1.2 0.00011155000000000001 1.14 AML other m 2020-06-21T02:10:38.24
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