Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 18-09-2018 and time 13:23:51 (UTC) in region 3 km E Roccantica (RI)

A magnitude ML 1.3 earthquake occured in region: 3 km E Roccantica (RI), on

  • 18-09-2018 13:23:51 (UTC)
  • 18-09-2018 15:23:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3160, 12.7260 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
Roccantica RI 3 563 563
Poggio Catino RI 4 1341 1904
Monte San Giovanni in Sabina RI 5 714 2618
Casperia RI 5 1246 3864
Cantalupo in Sabina RI 7 1685 5549
Salisano RI 7 567 6116
Poggio Mirteto RI 7 6315 12431
Mompeo RI 8 530 12961
Montenero Sabino RI 8 299 13260
Montopoli di Sabina RI 8 4210 17470
Torri in Sabina RI 8 1256 18726
Selci RI 9 1106 19832
Montasola RI 9 395 20227
Castelnuovo di Farfa RI 9 1059 21286
Casaprota RI 10 744 22030
Cottanello RI 11 563 22593
Vacone RI 11 256 22849
Forano RI 11 3179 26028
Contigliano RI 11 3783 29811
Frasso Sabino RI 12 743 30554
Toffia RI 12 1058 31612
Tarano RI 12 1444 33056
Fara in Sabina RI 12 13742 46798
Montebuono RI 12 883 47681
Poggio San Lorenzo RI 12 589 48270
Poggio Nativo RI 12 2622 50892
Filacciano RM 12 477 51369
Torrita Tiberina RM 12 1089 52458
Stimigliano RI 13 2328 54786
Torricella in Sabina RI 13 1342 56128
Belmonte in Sabina RI 14 636 56764
Configni RI 14 633 57397
Ponzano Romano RM 14 1155 58552
Nazzano RM 14 1436 59988
Monteleone Sabino RI 14 1224 61212
Collevecchio RI 14 1577 62789
Rieti RI 15 47698 110487
Greccio RI 16 1558 112045
Calvi dell'Umbria TR 16 1856 113901
Rocca Sinibalda RI 17 815 114716
Nerola RM 18 1926 116642
Poggio Moiano RI 18 2751 119393
Civitella San Paolo RM 18 2066 121459
Sant'Oreste RM 19 3687 125146
Scandriglia RI 19 3108 128254
Fiano Romano RM 19 15360 143614
Cittaducale RI 20 6828 150442
Montelibretti RM 20 5323 155765

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km S of Terni (111501 inhabitants)
35 Km N of Guidonia Montecelio (88673 inhabitants)
40 Km N of Tivoli (56533 inhabitants)
51 Km NE of Roma (2864731 inhabitants)
52 Km E of Viterbo (67173 inhabitants)
56 Km W of L'Aquila (69753 inhabitants)
70 Km N of Velletri (53303 inhabitants)
71 Km S of Foligno (57155 inhabitants)
73 Km NE of Fiumicino (78395 inhabitants)
74 Km N of Pomezia (62966 inhabitants)
80 Km N of Aprilia (73446 inhabitants)
81 Km E of Civitavecchia (52991 inhabitants)
89 Km W of Teramo (54892 inhabitants)
92 Km SE of Perugia (166134 inhabitants)
95 Km N of Latina (125985 inhabitants)
97 Km N of Anzio (54211 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 1.3 2018-09-18
13:23:51		 42.3158 12.7263 9 2019-06-04
09:16:16		 Bollettino Sismico Italiano INGV 68377001
Reviewed
Rev100 		ML 1.3 2018-09-18
13:23:51		 42.3185 12.7263 10 2018-09-18
14:27:14		 Sala Sismica INGV-Roma 61071711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-18 13:23:51 ± 0.11
Latitude 42.3158 ± 0.0036
Longitude 12.7263 ± 0.0097
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 68377001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 751
Semi-minor axis of confidence ellipse (meter) 406
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 280
Circular confidence region, given by single value of horizontal uncertainty (meter) 750.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 169
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.76712
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 61071711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-18 14:27:14

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 68377001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-09 08:52:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CH.MUGIO.HHZ. 2018-09-18T13:26:23.92 3.0 undecidable manual Sg 25.02 0
IV.CLTA.HHZ. 2018-09-18T13:25:53.09 3.0 undecidable manual Sn -9.99 0
CH.BERNI.HHZ. 2018-09-18T13:25:50.54 3.0 undecidable manual Sn -6.69 0
IV.MARS.EHZ. 2018-09-18T13:25:32.96 3.0 undecidable manual Sn -9.99 0
IV.LPDG.HHZ. 2018-09-18T13:25:32.43 3.0 undecidable manual Pg 6.72 0
IV.NDIM.HNZ. 2018-09-18T13:25:31.79 3.0 undecidable manual Sg 13.26 0
CR.STON.BHZ. 2018-09-18T13:25:27.26 3.0 undecidable manual Sg 19.209999 0
IV.CAR1.HHZ. 2018-09-18T13:25:26.46 3.0 undecidable manual Sg 2.29 0
GU.STV.HHZ. 2018-09-18T13:25:21.05 3.0 positive manual Pg 19.17 0
MN.TRI.HHZ. 2018-09-18T13:25:16.51 3.0 undecidable manual Sn -3.18 0
CH.MUGIO.HHZ. 2018-09-18T13:25:15.40 3.0 undecidable manual Pg 15.53 0
IV.MNO.SHZ. 2018-09-18T13:25:00.06 3.0 undecidable manual Pg 7.62 0
CH.BERNI.HHZ. 2018-09-18T13:24:55.46 3.0 positive manual Pn -3.47 0
IV.CRJA.HHZ. 2018-09-18T13:24:54.89 3.0 negative manual Pg 0.73 0
IV.CLTA.HHZ. 2018-09-18T13:24:53.73 3.0 undecidable manual Pn -8.64 0
IV.MARS.EHZ. 2018-09-18T13:24:51.65 3.0 undecidable manual Pn -3.97 0
IV.EUCT.HNZ. 2018-09-18T13:24:49.67 3.0 undecidable manual Pn -2.98 0
IV.OSSC.HHZ. 2018-09-18T13:24:44.47 3.0 undecidable manual Sn -7.59 0
TV.SF04.EHZ. 2018-09-18T13:24:42.61 3.0 undecidable manual Sg 4.25 0
IV.SPS2.HHZ. 2018-09-18T13:24:42.50 3.0 positive manual Pg 1.9 0
IV.CAR1.HHZ. 2018-09-18T13:24:32.09 3.0 negative manual Pn -8.27 0
IV.OSSC.HHZ. 2018-09-18T13:24:26.63 3.0 positive manual Pg 4.31 0
IV.FDMO.HHZ. 2018-09-18T13:24:17.56 0.6 undecidable manual S 20 85.1481 50 0.52 41
IV.CERT.HHZ. 2018-09-18T13:24:06.58 0.6 undecidable manual S 153 45.8208 50 0.06 48
IV.FDMO.HHZ. 2018-09-18T13:24:06.28 0.3 undecidable manual P 20 85.1481 50 0.11 67
IV.RM33.EHZ. 2018-09-18T13:24:06.29 0.3 undecidable manual S 62 45.3213 50 -0.12 72
IV.LNSS.HHZ. 2018-09-18T13:24:05.00 0.3 undecidable manual S 39 40.9257 50 -0.22 71
IV.FIAM.HHZ. 2018-09-18T13:24:03.04 0.3 undecidable manual S 99 32.5452 50 0.07 74
IV.NRCA.HHZ. 2018-09-18T13:24:02.94 0.3 undecidable manual P 29 65.5899 50 -0.21 68
IV.ARRO.EHZ. 2018-09-18T13:24:01.96 0.3 undecidable manual S 6 29.3484 107 -0.02 75
IV.MOMA.HHZ. 2018-09-18T13:24:01.51 0.3 undecidable manual P 347 55.5999 50 -0.11 71
IV.RM33.EHZ. 2018-09-18T13:24:00.34 0.3 undecidable manual P 62 45.3213 50 0.31 69
IV.LNSS.HHZ. 2018-09-18T13:23:59.27 0.1 undecidable manual P 39 40.9257 50 -0.08 97
IV.CERT.HHZ. 2018-09-18T13:23:59.89 0.1 undecidable manual P 153 45.8208 50 -0.21 94
IV.FRES.HHZ. 2018-09-18T13:23:59.88 3.0 undecidable manual Pn 0.52 0
IV.MTCE.HHN. 2018-09-18T13:23:58.19 0.3 undecidable manual P 178 32.5452 50 0.13 73
IV.FIAM.HHZ. 2018-09-18T13:23:58.10 0.1 undecidable manual P 99 32.5452 50 0.05 99
IV.ARRO.EHZ. 2018-09-18T13:23:57.52 0.1 undecidable manual P 6 29.3484 107 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FIAM.HHE. ML:1.0 0.0000524 0.44 AML other m 2018-09-18T13:24:03.52
IV.ARRO.EHN. ML:1.4 0.000121 0.18 AML other m 2018-09-18T13:24:03.89
IV.ARRO.EHE. ML:1.2 0.00008560000000000001 0.18 AML other m 2018-09-18T13:24:04.71
IV.FIAM.HHN. ML:1.0 0.00004955 1.58 AML other m 2018-09-18T13:24:04.18
IV.CERT.HHE. ML:1.5 0.00009575 1.28 AML other m 2018-09-18T13:24:06.77
IV.CERT.HHN. ML:1.3 0.00005695 1.1 AML other m 2018-09-18T13:24:07.24
IV.RM33.EHE. ML:1.3 0.00005515 0.58 AML other m 2018-09-18T13:24:08.54
IV.RM33.EHN. ML:1.3 0.0000532 0.32 AML other m 2018-09-18T13:24:09.34
IV.MOMA.HHE. ML:1.2 0.00003784999999999999 0.16 AML other m 2018-09-18T13:24:11.33
IV.MOMA.HHN. ML:1.0 0.000027 0.2 AML other m 2018-09-18T13:24:13.36
IV.NRCA.HHE. ML:1.5 0.00005485 0.14 AML other m 2018-09-18T13:24:13.58
IV.NRCA.HHN. ML:1.4 0.0000426 0.36 AML other m 2018-09-18T13:24:15.25
IV.FDMO.HHE. ML:1.4 0.000032600000000000006 0.2 AML other m 2018-09-18T13:24:18.18
IV.FDMO.HHN. ML:1.4 0.0000313 0.22 AML other m 2018-09-18T13:24:18.26
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