Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 26-12-2023 and time 15:01:44 (UTC) in region 2 km SW Montasola (RI)

A magnitude ML 1.3 earthquake occured in region: 2 km SW Montasola (RI), on

  • 26-12-2023 15:01:44 (UTC)
  • 26-12-2023 16:01:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.3680, 12.6730 at 10 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.

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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
Montasola RI 2 395 395
Torri in Sabina RI 3 1256 1651
Casperia RI 3 1246 2897
Vacone RI 4 256 3153
Cottanello RI 5 563 3716
Roccantica RI 5 563 4279
Montebuono RI 6 883 5162
Tarano RI 6 1444 6606
Selci RI 7 1106 7712
Cantalupo in Sabina RI 7 1685 9397
Configni RI 7 633 10030
Poggio Catino RI 8 1341 11371
Contigliano RI 9 3783 15154
Calvi dell'Umbria TR 10 1856 17010
Monte San Giovanni in Sabina RI 10 714 17724
Forano RI 10 3179 20903
Collevecchio RI 10 1577 22480
Poggio Mirteto RI 11 6315 28795
Stimigliano RI 12 2328 31123
Greccio RI 13 1558 32681
Salisano RI 14 567 33248
Montopoli di Sabina RI 14 4210 37458
Filacciano RM 14 477 37935
Ponzano Romano RM 15 1155 39090
Stroncone TR 15 4917 44007
Mompeo RI 15 530 44537
Montenero Sabino RI 15 299 44836
Torrita Tiberina RM 15 1089 45925
Magliano Sabina RI 16 3774 49699
Castelnuovo di Farfa RI 16 1059 50758
Rieti RI 16 47698 98456
Nazzano RM 17 1436 99892
Casaprota RI 17 744 100636
Otricoli TR 17 1869 102505
Colli sul Velino RI 17 533 103038
Fara in Sabina RI 18 13742 116780
Toffia RI 18 1058 117838
Frasso Sabino RI 19 743 118581
Belmonte in Sabina RI 19 636 119217
Poggio San Lorenzo RI 19 589 119806
Sant'Oreste RM 19 3687 123493
Poggio Nativo RI 20 2622 126115

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km S of Terni (111501 inhabitants)
41 Km N of Guidonia Montecelio (88673 inhabitants)
46 Km N of Tivoli (56533 inhabitants)
47 Km E of Viterbo (67173 inhabitants)
55 Km N of Roma (2864731 inhabitants)
60 Km W of L'Aquila (69753 inhabitants)
66 Km S of Foligno (57155 inhabitants)
75 Km NE of Fiumicino (78395 inhabitants)
76 Km N of Velletri (53303 inhabitants)
79 Km E of Civitavecchia (52991 inhabitants)
79 Km N of Pomezia (62966 inhabitants)
86 Km S of Perugia (166134 inhabitants)
86 Km N of Aprilia (73446 inhabitants)
91 Km W 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
Reviewed
Rev100 		ML 1.3 2023-12-26
15:01:44		 42.3675 12.6728 10 2023-12-26
15:09:20		 Sala Sismica INGV-Roma 124282091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-26 15:01:44 ± 0.09
Latitude 42.3675 ± 0.0036
Longitude 12.6728 ± 0.0085
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124282091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 668
Semi-minor axis of confidence ellipse (meter) 289
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) 670.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.56747
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 124282091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-26 15:09:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SELL.HHZ. 2023-12-26T15:03:59.08 3.0 undecidable manual Sg 8.58 0
IV.PLLN.EHZ. 2023-12-26T15:03:45.73 3.0 undecidable manual Sn -4.9 0
CR.STON.BHZ. 2023-12-26T15:03:44.12 3.0 undecidable manual Sg 13.73 0
ZO.PDN2.EHZ. 2023-12-26T15:03:25.94 3.0 undecidable manual Sg 4.35 0
IV.AIO.HHZ. 2023-12-26T15:03:08.77 3.0 undecidable manual Pg 8.77 0
IV.RESU.HHZ. 2023-12-26T15:03:07.09 3.0 undecidable manual Pg 6.67 0
IV.MTRZ.HHZ. 2023-12-26T15:02:53.41 3.0 undecidable manual Sg 2.08 0
IV.CRMI.HHZ. 2023-12-26T15:02:41.79 3.0 undecidable manual Sn -3.56 0
IV.PTRP.HHZ. 2023-12-26T15:02:41.20 3.0 undecidable manual Pg 4.34 0
IV.CSP1.EHZ. 2023-12-26T15:02:12.84 3.0 undecidable manual S -2.72 0
IV.MML1.EHZ. 2023-12-26T15:02:11.64 3.0 undecidable manual S -2.44 0
IV.FDMO.HHZ. 2023-12-26T15:02:09.63 3.0 undecidable manual S -3.02 0
IV.SMA1.EHZ. 2023-12-26T15:02:03.28 0.6 undecidable manual S 61 61.5939 50 0.07 47
IV.NRCA.HHZ. 2023-12-26T15:02:03.78 0.6 undecidable manual S 35 62.9925 50 0.17 46
IV.CERT.HHZ. 2023-12-26T15:02:01.16 0.6 undecidable manual S 151 52.9026 50 0.25 46
IV.MDAR.HNZ. 2023-12-26T15:02:01.01 3.0 undecidable manual P -2.91 0
IV.RM33.EHZ. 2023-12-26T15:01:59.49 0.6 undecidable manual S 70 47.0196 50 0.15 48
IV.TERO.HHZ. 2023-12-26T15:01:58.32 3.0 negative manual P -2.86 0
IV.FDMO.HHZ. 2023-12-26T15:01:58.43 3.0 negative manual P -2.54 0
IV.GAVE.EHZ. 2023-12-26T15:01:57.56 0.6 undecidable manual S 27 40.3263 50 0.02 49
IV.ASSB.HHZ. 2023-12-26T15:01:57.79 3.0 undecidable manual P -2.18 0
IV.MTCE.HHZ. 2023-12-26T15:01:57.47 0.6 undecidable manual S 171 38.628 50 0.37 46
IV.CESI.HHZ. 2023-12-26T15:01:57.08 3.0 positive manual P -2.51 0
IV.LNSS.HHZ. 2023-12-26T15:01:57.31 0.6 undecidable manual S 49 39.8268 50 -0.1 49
IV.FIAM.HHZ. 2023-12-26T15:01:56.80 0.3 undecidable manual S 107 38.1285 50 -0.15 73
IV.NRCA.HHZ. 2023-12-26T15:01:55.21 0.1 undecidable manual P 35 62.9925 50 -0.15 92
IV.SMA1.EHZ. 2023-12-26T15:01:55.90 0.6 positive manual P 61 61.5939 50 0.76 39
IV.CESX.HHZ. 2023-12-26T15:01:54.64 0.6 undecidable manual S 345 27.6501 50 0.48 46
IV.CERT.HHZ. 2023-12-26T15:01:53.63 1.0 positive manual P 151 52.9026 50 -0.18 23
IV.ARRO.EHZ. 2023-12-26T15:01:53.63 0.6 undecidable manual S 18 24.6531 112 0.27 48
IV.RM33.EHZ. 2023-12-26T15:01:52.84 1.0 negative manual P 70 47.0196 50 -0.06 24
IV.MTCE.HHZ. 2023-12-26T15:01:51.28 0.1 undecidable manual P 171 38.628 50 -0.33 93
IV.LNSS.HHZ. 2023-12-26T15:01:51.73 0.1 undecidable manual P 49 39.8268 50 -0.06 98
IV.GAVE.EHZ. 2023-12-26T15:01:51.72 0.1 undecidable manual P 27 40.3263 50 -0.14 96
IV.FIAM.HHZ. 2023-12-26T15:01:51.41 1.0 negative manual P 107 38.1285 50 -0.11 24
IV.CESX.HHZ. 2023-12-26T15:01:49.60 0.1 undecidable manual P 345 27.6501 50 -0.31 95
IV.ARRO.EHZ. 2023-12-26T15:01:49.35 0.1 undecidable manual P 18 24.6531 112 -0.1 100
IV.SRES.HHZ. 2023-12-26T15:01:48.71 0.1 undecidable manual P 223 19.6692 117 0.17 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SRES.HHE. ML:1.0 0.00007915 0.5 AML other m 2023-12-26T15:01:53.42
IV.ARRO.EHE. ML:1.4 0.00014749999999999998 0.24 AML other m 2023-12-26T15:01:53.76
IV.ARRO.EHN. ML:1.4 0.000143 0.16 AML other m 2023-12-26T15:01:54.34
IV.CESX.HHE. ML:1.2 0.0000734 0.32 AML other m 2023-12-26T15:01:54.91
IV.SRES.HHN. ML:1.1 0.00008565000000000001 0.62 AML other m 2023-12-26T15:01:55.33
IV.LNSS.HHE. ML:1.7 0.0001735 0.92 AML other m 2023-12-26T15:01:58.57
IV.GAVE.EHN. ML:1.7 0.00016749999999999998 1.04 AML other m 2023-12-26T15:01:58.31
IV.LNSS.HHN. ML:1.8 0.00022349999999999998 0.3 AML other m 2023-12-26T15:01:58.57
IV.CESX.HHN. ML:1.2 0.0000812 0.36 AML other m 2023-12-26T15:01:59.27
IV.MTCE.HHN. ML:0.9 0.00003195 0.46 AML other m 2023-12-26T15:01:59.22
IV.GAVE.EHE. ML:1.7 0.0001725 0.14 AML other m 2023-12-26T15:01:59.42
IV.FIAM.HHN. ML:1.0 0.0000402 1.16 AML other m 2023-12-26T15:01:59.62
IV.RM33.EHE. ML:1.2 0.0000481 0.68 AML other m 2023-12-26T15:02:01.62
IV.MTCE.HHE. ML:0.9 0.000029949999999999996 0.52 AML other m 2023-12-26T15:02:01.93
IV.RM33.EHN. ML:1.2 0.000044200000000000004 0.78 AML other m 2023-12-26T15:02:02.46
IV.FIAM.HHE. ML:1.1 0.0000463 1.3 AML other m 2023-12-26T15:02:02.80
IV.CERT.HHE. ML:1.4 0.00005964999999999999 1.6 AML other m 2023-12-26T15:02:02.10
IV.CERT.HHN. ML:1.3 0.0000432 1.22 AML other m 2023-12-26T15:02:02.91
IV.NRCA.HHE. ML:1.7 0.00010345 0.72 AML other m 2023-12-26T15:02:04.82
IV.SMA1.EHE. ML:1.7 0.00009485 1.84 AML other m 2023-12-26T15:02:05.97
IV.NRCA.HHN. ML:1.5 0.00005945 1.04 AML other m 2023-12-26T15:02:05.08
IV.SMA1.EHN. ML:1.4 0.000052850000000000004 0.34 AML other m 2023-12-26T15:02:06.10
IV.CESI.HHE. ML:1.3 0.00003075 0.74 AML other m 2023-12-26T15:02:08.42
IV.CESI.HHN. ML:1.5 0.000042800000000000004 0.82 AML other m 2023-12-26T15:02:08.45
IV.FDMO.HHN. ML:1.4 0.0000301 0.22 AML other m 2023-12-26T15:02:10.42
IV.TERO.HHE. ML:1.2 0.0000201 0.42 AML other m 2023-12-26T15:02:12.39
IV.FDMO.HHE. ML:1.4 0.00003695 0.3 AML other m 2023-12-26T15:02:13.65
IV.TERO.HHN. ML:1.2 0.000019799999999999997 0.46 AML other m 2023-12-26T15:02:13.98
IV.MML1.EHN. ML:1.3 0.000022499999999999998 1.16 AML other m 2023-12-26T15:02:14.93
IV.MML1.EHE. ML:1.4 0.0000309 0.88 AML other m 2023-12-26T15:02:15.14
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