Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.2 on date 25-12-2023 and time 07:25:31 (UTC) in region 6 km N Nocera Umbra (PG)

A magnitude ML 0.2 earthquake occured in region: 6 km N Nocera Umbra (PG), on

  • 25-12-2023 07:25:31 (UTC)
  • 25-12-2023 08:25:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1670, 12.7710 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
Nocera Umbra PG 6 5839 5839
Gualdo Tadino PG 7 15208 21047
Valtopina PG 12 1398 22445
Fiuminata MC 13 1402 23847
Valfabbrica PG 14 3389 27236
Fossato di Vico PG 14 2840 30076
Sefro MC 15 422 30498
Assisi PG 16 28299 58797
Esanatoglia MC 17 2034 60831
Pioraco MC 18 1134 61965
Serravalle di Chienti MC 18 1070 63035
Sigillo PG 19 2404 65439

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km N of Foligno (57155 inhabitants)
32 Km E of Perugia (166134 inhabitants)
68 Km N of Terni (111501 inhabitants)
78 Km S of Fano (60888 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
79 Km E of Arezzo (99543 inhabitants)
84 Km S of Pesaro (94582 inhabitants)
95 Km NW of Teramo (54892 inhabitants)
99 Km NE of Viterbo (67173 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 0.2 2023-12-25
07:25:31		 43.1667 12.7713 10 2023-12-25
08:02:42		 Sala Sismica INGV-Roma 124260121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-25 07:25:31 ± 0.04
Latitude 43.1667 ± 0.0018
Longitude 12.7713 ± 0.0025
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124260121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 200
Semi-minor axis of confidence ellipse (meter) 103
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 211
Circular confidence region, given by single value of horizontal uncertainty (meter) 200.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0.09713
Epicentral distance of station farthest from the epicenter (degree) 0.26440
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.2

Field Value
Value 0.2
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 124260121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-25 08:02:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2023-12-25T07:25:42.42 0.6 undecidable manual S 119 29.3484 50 0.04 48
IV.MURB.HHZ. 2023-12-25T07:25:40.61 0.6 undecidable manual S 298 22.6551 114 0.12 48
IV.CESI.HHZ. 2023-12-25T07:25:39.85 0.6 undecidable manual S 149 20.9679 116 -0.1 49
IV.MML1.EHZ. 2023-12-25T07:25:38.92 0.6 undecidable manual S 110 17.2716 121 0.09 49
IV.ASSB.HHZ. 2023-12-25T07:25:38.40 0.6 undecidable manual S 214 16.4724 122 -0.2 48
IV.SNTG.HHE. 2023-12-25T07:25:38.59 0.6 undecidable manual S 54 16.872 121 -0.11 49
IV.ATCC.EHZ. 2023-12-25T07:25:37.00 0.6 undecidable manual S 281 10.7781 133 -0.03 50
IV.FOSV.HNN. 2023-12-25T07:25:37.76 0.6 undecidable manual S 357 14.2746 126 -0.19 48
IV.FDMO.HHZ. 2023-12-25T07:25:37.83 0.1 undecidable manual P 119 29.3484 50 -0.11 96
IV.CESI.HHZ. 2023-12-25T07:25:36.61 0.1 undecidable manual P 149 20.9679 116 0.07 98
IV.MURB.HHZ. 2023-12-25T07:25:36.85 0.1 undecidable manual P 298 22.6551 114 0 99
IV.MML1.EHZ. 2023-12-25T07:25:36.01 0.3 undecidable manual P 110 17.2716 121 0.12 73
IV.FOSV.HNN. 2023-12-25T07:25:35.37 0.1 undecidable manual P 357 14.2746 126 -0.02 100
IV.ASSB.HHZ. 2023-12-25T07:25:35.76 0.1 undecidable manual P 214 16.4724 122 0 100
IV.SNTG.HHE. 2023-12-25T07:25:35.87 0.1 undecidable manual P 54 16.872 121 0.05 99
IV.ATCC.EHZ. 2023-12-25T07:25:34.95 0.1 undecidable manual P 281 10.7781 133 0.1 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATCC.EHN. ML:0.7 0.0000543 0.14 AML other m 2023-12-25T07:25:37.15
IV.ATCC.EHE. ML:0.5 0.000037395095000000004 0.1024 AML other m 2023-12-25T07:25:37.30
IV.ASSB.HHN. ML:0.1 0.000011172644999999998 0.2016 AML other m 2023-12-25T07:25:38.84
IV.MML1.EHE. ML:-0.2 0.0000074888650000000005 0.16 AML other m 2023-12-25T07:25:39.09
IV.CESI.HHE. ML:0.2 0.000011515315 0.0608 AML other m 2023-12-25T07:25:40.38
IV.CESI.HHN. ML:0.2 0.0000085121242 0.4992 AML other m 2023-12-25T07:25:40.57
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