Earthquake with magnitude of ML 1.5 on date 08-12-2023 and time 15:22:53 (UTC) in region 6 km SW Terni (TR)

A magnitude ML 1.5 earthquake occured in region: 6 km SW Terni (TR), on

  • 08-12-2023 15:22:53 (UTC)
  • 08-12-2023 16:22:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.5300, 12.5900 at 9 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
Terni TR 6 111501 111501
Narni TR 6 19785 131286
Stroncone TR 7 4917 136203
San Gemini TR 10 5018 141221
Configni RI 13 633 141854
Calvi dell'Umbria TR 14 1856 143710
Amelia TR 15 11897 155607
Otricoli TR 15 1869 157476
Montecastrilli TR 16 5022 162498
Cottanello RI 16 563 163061
Colli sul Velino RI 16 533 163594
Arrone TR 16 2763 166357
Vacone RI 16 256 166613
Montefranco TR 16 1276 167889
Greccio RI 17 1558 169447
Labro RI 17 374 169821
Montasola RI 18 395 170216
Montebuono RI 18 883 171099
Orte VT 18 8923 180022
Acquasparta TR 18 4778 184800
Avigliano Umbro TR 19 2558 187358
Ferentillo TR 19 1913 189271
Tarano RI 19 1444 190715
Penna in Teverina TR 20 1099 191814
Contigliano RI 20 3783 195597
Morro Reatino RI 20 373 195970
Torri in Sabina RI 20 1256 197226

Municipalities with at least 50000 inhabitants

An earthquake occurred to
6 Km SW of Terni (111501 inhabitants)
42 Km E of Viterbo (67173 inhabitants)
48 Km S of Foligno (57155 inhabitants)
60 Km N of Guidonia Montecelio (88673 inhabitants)
65 Km N of Tivoli (56533 inhabitants)
66 Km S of Perugia (166134 inhabitants)
69 Km W of L'Aquila (69753 inhabitants)
71 Km N of Roma (2864731 inhabitants)
82 Km NE of Civitavecchia (52991 inhabitants)
89 Km NE of Fiumicino (78395 inhabitants)
92 Km W of Teramo (54892 inhabitants)
95 Km N of Velletri (53303 inhabitants)
96 Km N of Pomezia (62966 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 1.5 2023-12-08
15:22:53
42.5303 12.5897 9 2023-12-08
15:33:08
Sala Sismica INGV-Roma 123898491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-08 15:22:53 ± 0.14
Latitude 42.5303 ± 0.0126
Longitude 12.5897 ± 0.0110
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 123898491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1482
Semi-minor axis of confidence ellipse (meter) 629
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 333
Circular confidence region, given by single value of horizontal uncertainty (meter) 1480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 167
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.51441
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 9
Type of magnitude ML
Reference to an origin 123898491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-08 15:33:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CERT.HHZ. 2023-12-08T15:23:15.47 3.0 undecidable manual S -0.18 0
IV.LNSS.HHZ. 2023-12-08T15:23:05.55 0.6 undecidable manual S 78 37.629 50 -0.44 44
IV.ASSB.HHZ. 2023-12-08T15:23:03.77 0.1 undecidable manual P 6 57.0984 50 0.25 88
IV.GAVE.EHE. 2023-12-08T15:23:03.96 0.6 undecidable manual S 54 30.6471 50 -0.15 47
IV.NRCA.HHZ. 2023-12-08T15:23:02.82 0.1 undecidable manual P 52 54.4011 50 -0.29 88
IV.LNSS.HHZ. 2023-12-08T15:23:00.22 0.1 undecidable manual P 78 37.629 50 -0.31 90
IV.ORTE.EHE. 2023-12-08T15:23:00.13 0.6 undecidable manual S 245 18.4704 117 -0.12 49
IV.GAVE.EHE. 2023-12-08T15:23:00.19 0.1 undecidable manual P 54 30.6471 50 0.74 80
IV.ARRO.EHN. 2023-12-08T15:22:59.57 0.3 undecidable manual S 69 15.3735 121 0.27 71
IV.SRES.HHZ. 2023-12-08T15:22:59.86 3.0 negative manual P 0.11 0
IV.ORTE.EHE. 2023-12-08T15:22:57.30 0.1 undecidable manual P 245 18.4704 117 0.08 98
IV.CESX.HHZ. 2023-12-08T15:22:57.21 0.3 undecidable manual S 358 8.6802 137 -0.27 72
IV.ARRO.EHN. 2023-12-08T15:22:56.69 0.1 undecidable manual P 69 15.3735 121 0.02 100
IV.CESX.HHZ. 2023-12-08T15:22:55.56 0.1 undecidable manual P 358 8.6802 137 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:1.7 0.0007934999999999999 0.32 AML other m 2023-12-08T15:22:57.67
IV.CESX.HHE. ML:1.4 0.0003755 1.66 AML other m 2023-12-08T15:22:58.97
IV.LNSS.HHN. ML:1.4 0.00009895 1.58 AML other m 2023-12-08T15:23:06.90
IV.LNSS.HHE. ML:1.5 0.00011350000000000001 0.54 AML other m 2023-12-08T15:23:06.69
IV.NRCA.HHE. ML:1.4 0.00005325 0.9 AML other m 2023-12-08T15:23:11.43
IV.NRCA.HHN. ML:1.4 0.0000566 0.12 AML other m 2023-12-08T15:23:11.98
IV.FDMO.HHN. ML:1.4 0.000043249999999999994 0.2 AML other m 2023-12-08T15:23:15.65
IV.FDMO.HHE. ML:1.6 0.00006459999999999998 1.76 AML other m 2023-12-08T15:23:16.01
IV.MML1.EHE. ML:1.4 0.000039 0.8 AML other m 2023-12-08T15:23:21.78
IV.MML1.EHN. ML:1.3 0.00002885 0.42 AML other m 2023-12-08T15:23:21.72
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