Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 24-12-2022 and time 05:04:07 (UTC) in region 1 km NW Spoleto (PG)

A magnitude ML 0.8 earthquake occured in region: 1 km NW Spoleto (PG), on

  • 24-12-2022 05:04:07 (UTC)
  • 24-12-2022 06:04:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7450, 12.7310 at 15 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
Spoleto PG 1 38218 38218
Sant'Anatolia di Narco PG 9 564 38782
Scheggino PG 9 461 39243
Campello sul Clitunno PG 9 2442 41685
Castel Ritaldi PG 10 3278 44963
Vallo di Nera PG 11 364 45327
Ferentillo TR 15 1913 47240
Trevi PG 15 8469 55709
Giano dell'Umbria PG 16 3846 59555
Acquasparta TR 16 4778 64333
Montefranco TR 17 1276 65609
Poggiodomo PG 17 117 65726
Massa Martana PG 17 3770 69496
Cerreto di Spoleto PG 17 1075 70571
Montefalco PG 18 5679 76250
Arrone TR 18 2763 79013
Polino TR 20 233 79246

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NE of Terni (111501 inhabitants)
24 Km S of Foligno (57155 inhabitants)
49 Km SE of Perugia (166134 inhabitants)
63 Km NE of Viterbo (67173 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
80 Km W of Teramo (54892 inhabitants)
83 Km N of Guidonia Montecelio (88673 inhabitants)
87 Km N of Tivoli (56533 inhabitants)
97 Km N of Roma (2864731 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 0.8 2022-12-24
05:04:07		 42.7453 12.7308 15 2022-12-24
05:11:38		 Sala Sismica INGV-Roma 113049561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-12-24 05:04:07 ± 0.08
Latitude 42.7453 ± 0.0027
Longitude 12.7308 ± 0.0037
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 113049561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 316
Semi-minor axis of confidence ellipse (meter) 130
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 34
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 90
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.29498
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 7
Type of magnitude ML
Reference to an origin 113049561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-12-24 05:11:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.PZZ.HHZ. 2022-12-24T05:05:48.44 3.0 undecidable manual Sn 2.16 0
CR.STON.BHZ. 2022-12-24T05:05:38.26 3.0 undecidable manual Sn -5.15 0
RF.GEPF.HHZ. 2022-12-24T05:05:38.01 3.0 undecidable manual Sn 0.56 0
IV.AMUR.HHZ. 2022-12-24T05:05:32.74 3.0 undecidable manual Sn -0.97 0
CH.FUORN.HHZ. 2022-12-24T05:05:18.00 3.0 undecidable manual Pg 18.879999 0
IV.PTRJ.HHZ. 2022-12-24T05:05:00.58 3.0 undecidable manual Sg 3.46 0
IV.CAR1.HNZ. 2022-12-24T05:05:00.11 3.0 undecidable manual Pn -0.59 0
GU.GORR.HHZ. 2022-12-24T05:04:55.40 3.0 negative manual Pg 14.36 0
IV.CRTC.HHZ. 2022-12-24T05:04:44.46 3.0 undecidable manual Sn 2.53 0
IV.NRCA.HHZ. 2022-12-24T05:04:18.51 0.6 undecidable manual S 72 32.745 102 0.02 50
IV.CESI.HHZ. 2022-12-24T05:04:18.29 0.6 undecidable manual S 26 32.0457 102 -0.03 50
IV.MMUR.HNZ. 2022-12-24T05:04:17.93 3.0 undecidable manual Pn -0.54 0
IV.LNSS.HHZ. 2022-12-24T05:04:17.77 0.3 undecidable manual S 122 29.748 104 0.04 75
IV.MURB.HHZ. 2022-12-24T05:04:16.43 3.0 undecidable manual Pn 0.83 0
IV.GUAR.HHZ. 2022-12-24T05:04:15.46 3.0 undecidable manual P -2.88 0
IV.ARRO.EHZ. 2022-12-24T05:04:15.03 0.3 undecidable manual S 171 18.6702 117 0.09 77
IV.CESX.HHZ. 2022-12-24T05:04:14.90 0.3 undecidable manual S 218 19.1697 116 -0.17 74
IT.GNU.HGZ. 2022-12-24T05:04:14.17 0.3 undecidable manual S 296 14.5743 126 0.16 77
IV.MOMA.HHZ. 2022-12-24T05:04:13.95 0.3 undecidable manual S 296 14.5743 126 -0.07 76
IV.NRCA.HHZ. 2022-12-24T05:04:13.69 0.3 positive manual P 72 32.745 102 -0.02 75
IV.CESI.HHZ. 2022-12-24T05:04:13.50 0.6 positive manual P 26 32.0457 102 -0.11 50
IV.LNSS.HHZ. 2022-12-24T05:04:13.18 0.1 undecidable manual P 122 29.748 104 -0.09 100
IV.ASSB.HHZ. 2022-12-24T05:04:13.65 3.0 undecidable manual Pn -0.73 0
IV.GAVE.EHE. 2022-12-24T05:04:13.89 0.3 undecidable manual S 114 14.5743 126 -0.12 76
IV.GAVE.EHE. 2022-12-24T05:04:11.41 0.6 undecidable manual P 114 14.5743 126 0.29 49
IV.MOMA.HHZ. 2022-12-24T05:04:11.06 0.3 undecidable manual P 296 14.5743 126 -0.06 76
IV.CESX.HHZ. 2022-12-24T05:04:11.57 0.6 positive manual P 218 19.1697 116 -0.16 50
IT.GNU.HGZ. 2022-12-24T05:04:11.33 0.3 undecidable manual P 296 14.5743 126 0.21 76
IV.ARRO.EHZ. 2022-12-24T05:04:11.72 0.3 undecidable manual P 171 18.6702 117 0.06 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHE. ML:0.9 0.0000661332 0.0992 AML other m 2022-12-24T05:04:14.32
IV.MOMA.HHN. ML:0.5 0.000025728015 0.24 AML other m 2022-12-24T05:04:15.36
IV.MOMA.HNN. ML:1.1 0.00009922317 0.2688 AML other m 2022-12-24T05:04:14.29
IV.CESX.HHE. ML:0.5 0.000021725760000000002 0.2816 AML other m 2022-12-24T05:04:15.06
IV.CESX.HHN. ML:0.7 0.00002777284 0.24 AML other m 2022-12-24T05:04:16.59
IV.CESI.HHE. ML:0.7 0.000021435574999999997 0.16 AML other m 2022-12-24T05:04:18.51
IV.CESI.HHN. ML:0.9 0.00003694213 0.1184 AML other m 2022-12-24T05:04:18.70
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