Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 31-10-2024 and time 10:43:44 (Italy) in region 8 km E Norcia (PG)

A magnitude ML 1.4 earthquake occured in region: 8 km E Norcia (PG), on

  • 31-10-2024 09:43:44 (UTC)
  • 31-10-2024 10:43:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8110, 13.1940 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 8 4957 4957
Arquata del Tronto AP 9 1178 6135
Castelsantangelo sul Nera MC 10 281 6416
Montegallo AP 12 523 6939
Accumoli RI 14 667 7606
Preci PG 15 724 8330
Montemonaco AP 15 604 8934
Ussita MC 16 444 9378
Visso MC 16 1107 10485
Cascia PG 18 3217 13702
Acquasanta Terme AP 18 2916 16618
Montefortino FM 19 1178 17796

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
53 Km NE of Terni (111501 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
73 Km E of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km W of Pescara (121014 inhabitants)
94 Km S of Ancona (100861 inhabitants)
95 Km NW of Chieti (51815 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km E of Viterbo (67173 inhabitants)
100 Km NE 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 1.4 2024-10-31
09:43:44		 42.8107 13.1937 11 2024-10-31
10:00:31		 Sala Sismica INGV-Roma 132359141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-10-31 09:43:44 ± 0.05
Latitude 42.8107 ± 0.0018
Longitude 13.1937 ± 0.0061
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 132359141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 460
Semi-minor axis of confidence ellipse (meter) 150
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 274
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.54499
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.4
Num. used stations 9
Type of magnitude ML
Reference to an origin 132359141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-10-31 10:00:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
MN.THL.HHZ. 2024-10-31T09:45:39.40 3.0 undecidable manual Pn 6.8 0
IV.MESG.HHZ. 2024-10-31T09:45:33.67 3.0 undecidable manual Sn -3.03 0
IV.BAG8.EHZ. 2024-10-31T09:45:19.92 3.0 undecidable manual Sn -1.19 0
IV.SLCN.HHZ. 2024-10-31T09:45:16.83 3.0 undecidable manual Sg 7.65 0
IV.IFIL.HHZ. 2024-10-31T09:45:01.00 3.0 undecidable manual Pg 11.09 0
GU.RORO.HHZ. 2024-10-31T09:45:01.56 3.0 negative manual Pg 18.440001 0
GU.RNCA.HHZ. 2024-10-31T09:44:52.10 3.0 negative manual Pg 15.12 0
IV.CET2.HHZ. 2024-10-31T09:44:50.98 3.0 undecidable manual Pg 7.36 0
IV.QLNO.HHZ. 2024-10-31T09:44:46.58 3.0 undecidable manual Pn 5.04 0
MN.BLY.HHZ. 2024-10-31T09:44:44.97 3.0 undecidable manual Pn 6.33 0
IV.ACER.HHZ. 2024-10-31T09:44:34.73 3.0 positive manual Pg 4.63 0
IV.MRB1.HHZ. 2024-10-31T09:44:23.06 3.0 negative manual Pg 3.24 0
IV.LAV9.HNZ. 2024-10-31T09:44:21.57 3.0 undecidable manual S -0.71 0
IT.GLNS.HNZ. 2024-10-31T09:44:12.90 3.0 undecidable manual Pn 0.79 0
IV.LAV9.HNZ. 2024-10-31T09:44:06.47 3.0 undecidable manual P 0.82 0
IV.FIAM.HHZ. 2024-10-31T09:44:03.47 0.6 undecidable manual S 186 60.495 90 -0.1 45
IV.TERO.HHZ. 2024-10-31T09:43:58.15 0.6 undecidable manual S 122 39.4272 90 0.21 46
IV.FIAM.HHZ. 2024-10-31T09:43:56.02 0.1 undecidable manual P 186 60.495 90 0.31 87
IV.CSP1.EHZ. 2024-10-31T09:43:55.83 0.6 undecidable manual S 2 31.2465 90 0.08 48
IV.LNSS.HHZ. 2024-10-31T09:43:54.48 0.6 undecidable manual S 209 26.2515 90 0.07 48
IV.FDMO.HHZ. 2024-10-31T09:43:54.45 0.6 undecidable manual S 341 26.5512 90 -0.05 49
IV.SMA1.EHZ. 2024-10-31T09:43:53.43 0.6 undecidable manual S 150 23.0547 90 -0.15 47
IV.TERO.HHZ. 2024-10-31T09:43:52.31 0.6 positive manual P 122 39.4272 90 -0.14 46
IV.MMO1.EHZ. 2024-10-31T09:43:51.30 0.6 undecidable manual S 48 14.6742 90 -0.03 50
IV.CSP1.EHZ. 2024-10-31T09:43:51.22 1.0 negative manual P 2 31.2465 90 0.03 24
IV.LNSS.HHZ. 2024-10-31T09:43:50.08 1.0 undecidable manual P 209 26.2515 90 -0.34 23
IV.FDMO.HHZ. 2024-10-31T09:43:50.20 1.0 negative manual P 341 26.5512 90 -0.27 23
IV.SMA1.EHZ. 2024-10-31T09:43:49.85 0.6 positive manual P 150 23.0547 90 -0.08 48
IV.NRCA.HHZ. 2024-10-31T09:43:49.41 0.6 undecidable manual S 292 6.993 136 -0.09 50
IV.MMO1.EHZ. 2024-10-31T09:43:48.66 0.3 undecidable manual P 48 14.6742 90 0.02 75
IV.NRCA.HHZ. 2024-10-31T09:43:47.64 0.1 undecidable manual P 292 6.993 136 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.8 0.0008544999999999999 0.16 AML other m 2024-10-31T09:43:49.54
IV.NRCA.HHN. ML:1.4 0.000366 0.72 AML other m 2024-10-31T09:43:49.89
IV.MMO1.EHN. ML:1.3 0.0001715 0.18 AML other m 2024-10-31T09:43:51.37
IV.MMO1.EHE. ML:1.3 0.00020600000000000002 0.14 AML other m 2024-10-31T09:43:51.40
IV.FRON.EHN. ML:1.8 0.0000823 0.6 AML other m 2024-10-31T09:44:32.27
IV.NRCA.HNE. ML:1.8 0.00080495755 0.16 AML other m 2024-10-31T09:43:49.54
IV.NRCA.HNN. ML:1.2 0.0002476598 0.07 AML other m 2024-10-31T09:43:50.06
IV.BAG8.EHE. ML:0.0 0.00010839999999999999 0.14 AML other m 2024-10-31T09:45:27.82
IV.BAG8.EHN. ML:0.0 0.000163 0.12 AML other m 2024-10-31T09:45:28.57
IV.SMA1.EHE. ML:0.5 0.00002178306 0.16 AML other m 2024-10-31T09:43:54.19
IV.SMA1.EHN. ML:0.7 0.000030712875 0.22 AML other m 2024-10-31T09:43:53.48
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