Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 06-12-2023 and time 10:09:23 (UTC) in region 4 km NW Vallo di Nera (PG)

A magnitude ML 0.7 earthquake occured in region: 4 km NW Vallo di Nera (PG), on

  • 06-12-2023 10:09:23 (UTC)
  • 06-12-2023 11:09:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7950, 12.8310 at 11 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
Vallo di Nera PG 4 364 364
Campello sul Clitunno PG 5 2442 2806
Sant'Anatolia di Narco PG 7 564 3370
Cerreto di Spoleto PG 8 1075 4445
Scheggino PG 9 461 4906
Spoleto PG 10 38218 43124
Trevi PG 11 8469 51593
Poggiodomo PG 13 117 51710
Sellano PG 13 1079 52789
Castel Ritaldi PG 13 3278 56067
Cascia PG 17 3217 59284
Montefalco PG 18 5679 64963
Monteleone di Spoleto PG 19 599 65562
Preci PG 19 724 66286
Ferentillo TR 20 1913 68199

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km SE of Foligno (57155 inhabitants)
30 Km NE of Terni (111501 inhabitants)
50 Km SE of Perugia (166134 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
73 Km NE of Viterbo (67173 inhabitants)
73 Km W of Teramo (54892 inhabitants)
89 Km N of Guidonia Montecelio (88673 inhabitants)
92 Km N of Tivoli (56533 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 0.7 2023-12-06
10:09:23		 42.7952 12.831 11 2023-12-06
10:24:50		 Sala Sismica INGV-Roma 123850831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-06 10:09:23 ± 0.08
Latitude 42.7952 ± 0.0036
Longitude 12.8310 ± 0.0037
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 123850831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 327
Semi-minor axis of confidence ellipse (meter) 289
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 276
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.40290
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 13
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 123850831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-06 10:24:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SARZ.HNZ. 2023-12-06T10:10:55.50 3.0 undecidable manual Sg 18.190001 0
IV.SGAL.EHZ. 2023-12-06T10:10:43.21 3.0 undecidable manual Sn 3.21 0
IV.TDS.HHZ. 2023-12-06T10:10:29.34 3.0 undecidable manual Pg 17.82 0
IV.PTRJ.HHZ. 2023-12-06T10:10:25.88 3.0 undecidable manual Sg 13.91 0
4P.IT02A.HHZ. 2023-12-06T10:10:25.21 3.0 undecidable manual Pg 16.110001 0
IV.ZCCA.HHZ. 2023-12-06T10:10:13.21 3.0 undecidable manual Sg 3.63 0
IV.ZEN8.EHZ. 2023-12-06T10:10:13.34 3.0 negative manual Pg 14.07 0
IV.MIDA.HHZ. 2023-12-06T10:10:11.19 3.0 undecidable manual Sg 6.04 0
IV.CERA.HNZ. 2023-12-06T10:10:02.52 3.0 undecidable manual Sn 0.63 0
IV.RNI2.HHZ. 2023-12-06T10:09:59.42 3.0 undecidable manual Sn -3.65 0
OX.VARN.HHZ. 2023-12-06T10:09:57.25 3.0 undecidable manual Pn -5.6 0
IV.MTMR.HNZ. 2023-12-06T10:09:46.10 3.0 undecidable manual Pn -4.49 0
IV.CAFI.HHZ. 2023-12-06T10:09:43.05 3.0 undecidable manual Sn -3 0
IV.CSP1.EHE. 2023-12-06T10:09:38.25 0.6 undecidable manual S 43 44.7219 90 0.32 45
IV.LATE.HHZ. 2023-12-06T10:09:36.77 3.0 undecidable manual Sn 0.78 0
IV.MML1.EHZ. 2023-12-06T10:09:35.96 0.3 undecidable manual S 18 37.1295 90 0.08 72
IV.FDMO.HHN. 2023-12-06T10:09:35.05 0.6 undecidable manual S 38 33.9438 90 0.02 49
IV.MC2.EHE. 2023-12-06T10:09:35.01 0.3 undecidable manual S 66 31.8459 90 0.54 65
IV.ASSB.HHE. 2023-12-06T10:09:34.36 0.3 undecidable manual S 333 30.8469 90 0.16 72
IV.LNSS.HHZ. 2023-12-06T10:09:33.34 0.3 undecidable manual S 141 27.3504 90 0.07 73
IV.CESX.HHE. 2023-12-06T10:09:33.42 0.3 undecidable manual S 224 28.749 90 -0.22 71
IV.NRCA.HHZ. 2023-12-06T10:09:32.02 0.3 undecidable manual S 79 23.4543 90 -0.21 73
IT.MTCL.HGE. 2023-12-06T10:09:32.72 0.3 undecidable manual S 32 25.9518 90 -0.18 73
IV.CESI.HHZ. 2023-12-06T10:09:32.30 0.3 undecidable manual S 14 24.0537 90 -0.09 74
IV.FEMA.HNE. 2023-12-06T10:09:32.79 0.3 undecidable manual S 44 25.6521 90 -0.04 75
IV.CSP1.EHE. 2023-12-06T10:09:31.57 0.3 undecidable manual P 43 44.7219 90 -0.27 69
IV.MOMA.HHZ. 2023-12-06T10:09:31.79 0.3 undecidable manual S 273 21.2676 91 0.14 73
IV.MML1.EHZ. 2023-12-06T10:09:30.40 0.1 undecidable manual P 18 37.1295 90 -0.26 94
IV.MC2.EHE. 2023-12-06T10:09:30.18 0.3 undecidable manual P 66 31.8459 90 0.34 69
IV.CESX.HHE. 2023-12-06T10:09:29.45 0.3 undecidable manual P 224 28.749 90 0.08 73
IV.FDMO.HHN. 2023-12-06T10:09:29.96 1.0 undecidable manual P 38 33.9438 90 -0.2 24
IV.ASSB.HHE. 2023-12-06T10:09:29.47 0.1 undecidable manual P 333 30.8469 90 -0.22 95
IV.GAVE.EHZ. 2023-12-06T10:09:29.32 0.3 undecidable manual S 156 12.5763 105 -0.01 76
IV.CESI.HHZ. 2023-12-06T10:09:28.59 0.1 undecidable manual P 14 24.0537 90 -0.05 100
IV.FEMA.HNE. 2023-12-06T10:09:28.90 0.1 undecidable manual P 44 25.6521 90 0 99
IV.MOMA.HHZ. 2023-12-06T10:09:28.48 0.3 undecidable manual P 273 21.2676 91 0.27 71
IV.LNSS.HHZ. 2023-12-06T10:09:28.88 0.1 undecidable manual P 141 27.3504 90 -0.27 95
IV.NRCA.HHZ. 2023-12-06T10:09:28.49 0.1 undecidable manual P 79 23.4543 90 -0.06 100
IT.MTCL.HGE. 2023-12-06T10:09:28.81 0.3 undecidable manual P 32 25.9518 90 -0.13 74
IV.GAVE.EHZ. 2023-12-06T10:09:27.06 0.1 undecidable manual P 156 12.5763 105 0.18 98
IV.ARCI.HHZ. 2023-12-06T10:09:26.04 3.0 undecidable manual P 0.78 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.9 0.000048909855 0.0832 AML other m 2023-12-06T10:09:32.84
IV.CESI.HHE. ML:0.7 0.000028621904999999998 0.1408 AML other m 2023-12-06T10:09:32.54
IV.MOMA.HHE. ML:0.6 0.000027280134999999996 0.2368 AML other m 2023-12-06T10:09:31.91
IV.MOMA.HHN. ML:0.6 0.0000238790275 0.1792 AML other m 2023-12-06T10:09:32.26
IV.NRCA.HHE. ML:0.9 0.00004355857 0.1216 AML other m 2023-12-06T10:09:32.93
IV.NRCA.HHN. ML:0.8 0.000039688535 0.1024 AML other m 2023-12-06T10:09:32.16
IV.LNSS.HHE. ML:0.9 0.0000408496435 0.1408 AML other m 2023-12-06T10:09:33.47
IV.LNSS.HHN. ML:0.8 0.000027975534500000005 0.096 AML other m 2023-12-06T10:09:33.59
IV.MML1.EHE. ML:0.6 0.0000144885915 0.1216 AML other m 2023-12-06T10:09:37.32
IV.MML1.EHN. ML:0.4 0.000010699893 0.1024 AML other m 2023-12-06T10:09:37.17
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