Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 26-01-2024 and time 22:28:58 (Italy) in region 5 km NW Norcia (PG)

A magnitude ML 0.5 earthquake occured in region: 5 km NW Norcia (PG), on

  • 26-01-2024 21:28:58 (UTC)
  • 26-01-2024 22:28:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8340, 13.0740 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
Norcia PG 5 4957 4957
Preci PG 6 724 5681
Castelsantangelo sul Nera MC 9 281 5962
Visso MC 11 1107 7069
Cerreto di Spoleto PG 13 1075 8144
Sellano PG 13 1079 9223
Ussita MC 13 444 9667
Cascia PG 14 3217 12884
Poggiodomo PG 18 117 13001
Vallo di Nera PG 19 364 13365
Monte Cavallo MC 19 145 13510
Arquata del Tronto AP 19 1178 14688

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
55 Km W of Teramo (54892 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
64 Km E of Perugia (166134 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
95 Km W of Montesilvano (53738 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
99 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 0.5 2024-01-26
21:28:58		 42.8345 13.0742 11 2024-01-26
21:40:50		 Sala Sismica INGV-Roma 124877511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-26 21:28:58 ± 0.07
Latitude 42.8345 ± 0.0054
Longitude 13.0742 ± 0.0074
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124877511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 620
Semi-minor axis of confidence ellipse (meter) 520
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 234
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 159
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.02968
Epicentral distance of station farthest from the epicenter (degree) 0.36782
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:0.5

Field Value
Value 0.5
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 124877511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-26 21:40:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2024-01-26T21:29:11.90 0.3 undecidable manual S 305 40.8258 90 0.23 67
IV.CSP1.EHZ. 2024-01-26T21:29:09.09 0.3 undecidable manual S 20 30.4473 90 0.21 70
IV.CESI.HHZ. 2024-01-26T21:29:07.06 0.6 undecidable manual S 324 23.3544 90 0.07 48
IV.MMO1.EHZ. 2024-01-26T21:29:06.32 0.6 undecidable manual S 71 21.7671 90 -0.24 46
IV.FDMO.HHZ. 2024-01-26T21:29:06.63 0.6 undecidable manual S 3 22.4553 90 -0.11 47
IV.ASSB.HHZ. 2024-01-26T21:29:05.61 0.6 undecidable manual P 305 40.8258 90 -0.41 44
IV.CSP1.EHZ. 2024-01-26T21:29:04.36 0.6 undecidable manual P 20 30.4473 90 -0.05 47
IV.MC2.EHE. 2024-01-26T21:29:04.32 0.1 undecidable manual S 48 12.6762 103 0.19 97
IV.CESI.HHZ. 2024-01-26T21:29:03.06 0.6 undecidable manual P 324 23.3544 90 -0.26 46
IV.MMO1.EHZ. 2024-01-26T21:29:03.07 0.1 undecidable manual P 71 21.7671 90 0 97
IV.FDMO.HHZ. 2024-01-26T21:29:03.24 0.1 undecidable manual P 3 22.4553 90 0.07 96
IV.NRCA.HHE. 2024-01-26T21:29:02.08 0.6 undecidable manual S 92 3.2967 158 -0.23 48
IV.MC2.EHE. 2024-01-26T21:29:01.78 0.3 undecidable manual P 48 12.6762 103 0.12 73
IV.NRCA.HHE. 2024-01-26T21:29:00.64 0.1 undecidable manual P 92 3.2967 158 0.03 100
ZO.PDN11.EHZ. 2024-01-26T21:29:00.91 0.1 undecidable manual P 146 6.7932 137 0.01 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.6 0.00002535 0.14 AML other m 2024-01-26T21:29:17.96
IV.FDMO.HHE. ML:0.5 0.000022449999999999997 0.38 AML other m 2024-01-26T21:29:18.02
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