Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 09-01-2023 and time 14:02:18 (UTC) in region 3 km NW Ussita (MC)

A magnitude ML 0.8 earthquake occured in region: 3 km NW Ussita (MC), on

  • 09-01-2023 14:02:18 (UTC)
  • 09-01-2023 15:02:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9590, 13.1140 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
Ussita MC 3 444 444
Visso MC 4 1107 1551
Castelsantangelo sul Nera MC 8 281 1832
Fiordimonte MC 9 202 2034
Fiastra MC 9 559 2593
Acquacanina MC 10 121 2714
Monte Cavallo MC 10 145 2859
Bolognola MC 10 142 3001
Preci PG 11 724 3725
Pieve Torina MC 11 1458 5183
Pievebovigliana MC 12 866 6049
Muccia MC 15 915 6964
Sellano PG 17 1079 8043
Sarnano MC 18 3264 11307
Serravalle di Chienti MC 18 1070 12377
Norcia PG 19 4957 17334
Montemonaco AP 19 604 17938
Montefortino FM 19 1178 19116
Amandola FM 20 3629 22745

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
58 Km NE of Terni (111501 inhabitants)
59 Km NW of Teramo (54892 inhabitants)
61 Km E of Perugia (166134 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
80 Km SW of Ancona (100861 inhabitants)
98 Km NW of Montesilvano (53738 inhabitants)
99 Km S of Fano (60888 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 2023-01-09
14:02:18		 42.9588 13.1135 11 2023-01-09
15:47:04		 Sala Sismica INGV-Roma 113432901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-09 14:02:18 ± 0.08
Latitude 42.9588 ± 0.0036
Longitude 13.1135 ± 0.0061
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 113432901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 457
Semi-minor axis of confidence ellipse (meter) 341
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 215
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) 107
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 14
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.18616
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 113432901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-09 15:47:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T0110.HHZ. 2023-01-09T14:02:47.31 3.0 undecidable manual S -0.17 0
IV.ATFO.HHZ. 2023-01-09T14:02:31.10 3.0 negative manual P 0.57 0
IV.MML1.EHZ. 2023-01-09T14:02:26.13 0.3 undecidable manual S 326 20.6682 50 0 74
IV.CESI.HHZ. 2023-01-09T14:02:25.26 0.6 undecidable manual S 287 17.6712 121 0.02 50
IV.CSP1.EHZ. 2023-01-09T14:02:24.72 0.6 undecidable manual S 27 16.4724 123 -0.17 48
7F.SIB1.EHE. 2023-01-09T14:02:24.17 0.6 undecidable manual S 119 14.5743 126 -0.16 48
IV.NRCA.HHZ. 2023-01-09T14:02:23.81 0.6 undecidable manual S 180 13.875 127 -0.34 47
IV.CESI.HHZ. 2023-01-09T14:02:22.16 0.1 undecidable manual P 287 17.6712 121 -0.05 99
IV.MC2.EHZ. 2023-01-09T14:02:22.97 0.6 undecidable manual S 131 8.0808 143 0.26 48
IV.FDMO.HHZ. 2023-01-09T14:02:22.94 0.6 undecidable manual S 346 8.88 140 0.06 50
IV.MML1.EHZ. 2023-01-09T14:02:22.81 0.6 undecidable manual P 326 20.6682 50 0.09 49
IV.FDMO.HHZ. 2023-01-09T14:02:21.02 1.0 undecidable manual P 346 8.88 140 0.17 24
IV.CSP1.EHZ. 2023-01-09T14:02:21.47 1.0 positive manual P 27 16.4724 123 -0.53 22
7F.SIB1.EHE. 2023-01-09T14:02:21.68 0.1 undecidable manual P 119 14.5743 126 0 100
IV.NRCA.HHZ. 2023-01-09T14:02:21.55 0.3 positive manual P 180 13.875 127 -0.03 75
IV.MMO1.EHZ. 2023-01-09T14:02:21.28 3.0 undecidable manual P 0.23 0
IV.MC2.EHZ. 2023-01-09T14:02:21.00 0.1 undecidable manual P 131 8.0808 143 0.25 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MC2.EHE. ML:0.9 0.000102186825 0.1024 AML other m 2023-01-09T14:02:23.26
IV.MC2.EHN. ML:1.0 0.00013563306 0.1216 AML other m 2023-01-09T14:02:23.52
IV.FDMO.HHE. ML:0.7 0.00006489663500000001 0.1984 AML other m 2023-01-09T14:02:23.21
IV.FDMO.HHN. ML:0.5 0.000044238215 0.1984 AML other m 2023-01-09T14:02:23.36
IV.NRCA.HHE. ML:0.7 0.00005238307 0.1024 AML other m 2023-01-09T14:02:25.15
IV.NRCA.HHN. ML:0.9 0.000077666215 0.096 AML other m 2023-01-09T14:02:23.92
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