Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 04-12-2023 and time 17:36:33 (UTC) in region 4 km NE Cascia (PG)

A magnitude ML 0.6 earthquake occured in region: 4 km NE Cascia (PG), on

  • 04-12-2023 17:36:33 (UTC)
  • 04-12-2023 18:36:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7400, 13.0610 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
Cascia PG 5 3217 3217
Norcia PG 7 4957 8174
Poggiodomo PG 11 117 8291
Monteleone di Spoleto PG 13 599 8890
Cerreto di Spoleto PG 15 1075 9965
Preci PG 16 724 10689
Cittareale RI 16 482 11171
Accumoli RI 16 667 11838
Vallo di Nera PG 17 364 12202
Sant'Anatolia di Narco PG 18 564 12766
Castelsantangelo sul Nera MC 19 281 13047
Scheggino PG 19 461 13508
Arquata del Tronto AP 20 1178 14686
Sellano PG 20 1079 15765

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SE of Foligno (57155 inhabitants)
39 Km NE of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
53 Km W of Teramo (54892 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
86 Km E of Viterbo (67173 inhabitants)
87 Km NE of Guidonia Montecelio (88673 inhabitants)
89 Km N of Tivoli (56533 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
99 Km W of Pescara (121014 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 0.6 2023-12-04
17:36:33		 42.7398 13.0608 10 2023-12-04
18:28:07		 Sala Sismica INGV-Roma 123811031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-04 17:36:33 ± 0.1
Latitude 42.7398 ± 0.0054
Longitude 13.0608 ± 0.0086
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 123811031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 816
Semi-minor axis of confidence ellipse (meter) 309
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 300
Circular confidence region, given by single value of horizontal uncertainty (meter) 820.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 135
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25181
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 123811031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-04 18:28:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.VCEL.EHZ. 2023-12-04T17:36:50.06 3.0 negative manual P 0 0
IV.MMO1.EHZ. 2023-12-04T17:36:43.27 0.3 undecidable manual S 51 27.9498 50 -0.14 73
7F.SIB2.EHZ. 2023-12-04T17:36:42.41 0.6 undecidable manual S 50 25.9518 111 -0.43 46
IV.MC2.EHE. 2023-12-04T17:36:41.76 0.3 undecidable manual S 29 21.6672 114 0.28 72
IV.GAVE.EHZ. 2023-12-04T17:36:39.11 0.3 undecidable manual S 249 14.5743 124 -0.21 74
IV.LNSS.HNZ. 2023-12-04T17:36:39.50 0.3 undecidable manual S 186 15.2736 123 -0.03 76
IV.MMO1.EHZ. 2023-12-04T17:36:39.19 1.0 positive manual P 51 27.9498 50 0.09 25
IV.NRCA.HHZ. 2023-12-04T17:36:38.18 0.6 undecidable manual S 23 11.2776 131 -0.22 49
IV.MC2.EHE. 2023-12-04T17:36:38.23 0.3 undecidable manual P 29 21.6672 114 0.24 72
7F.SIB2.EHZ. 2023-12-04T17:36:38.75 0.1 undecidable manual P 50 25.9518 111 -0.02 100
IV.LNSS.HNZ. 2023-12-04T17:36:37.03 0.3 undecidable manual P 186 15.2736 123 0.17 74
IV.NRCA.HHZ. 2023-12-04T17:36:36.28 1.0 undecidable manual P 23 11.2776 131 0.07 25
IV.GAVE.EHZ. 2023-12-04T17:36:36.83 0.6 negative manual P 249 14.5743 124 0.09 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.7 0.00006725000000000001 1.02 AML other m 2023-12-04T17:36:38.84
IV.NRCA.HHE. ML:1.2 0.000194 0.16 AML other m 2023-12-04T17:36:38.41
IV.GAVE.EHE. ML:0.6 0.000038998235499999996 0.1024 AML other m 2023-12-04T17:36:39.35
IV.GAVE.EHN. ML:0.7 0.000045935843000000006 0.1536 AML other m 2023-12-04T17:36:39.69
IV.MMO1.EHE. ML:0.3 0.000011837625 1.2288 AML other m 2023-12-04T17:36:43.33
IV.MMO1.EHN. ML:0.3 0.0000114136845 1.2672 AML other m 2023-12-04T17:36:43.36
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