Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 03-01-2023 and time 22:21:33 (UTC) in region 5 km S Giano dell'Umbria (PG)

A magnitude ML 0.6 earthquake occured in region: 5 km S Giano dell'Umbria (PG), on

  • 03-01-2023 22:21:33 (UTC)
  • 03-01-2023 23:21:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7890, 12.5960 at 7 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Giano dell'Umbria PG 5 3846 3846
Massa Martana PG 6 3770 7616
Castel Ritaldi PG 7 3278 10894
Acquasparta TR 12 4778 15672
Montefalco PG 13 5679 21351
Spoleto PG 13 38218 59569
Gualdo Cattaneo PG 14 6155 65724
Campello sul Clitunno PG 15 2442 68166
Todi PG 15 16851 85017
Trevi PG 16 8469 93486
Bevagna PG 16 5081 98567
Collazzone PG 17 3473 102040
Montecastrilli TR 18 5022 107062
San Gemini TR 20 5018 112080

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km SW of Foligno (57155 inhabitants)
26 Km N of Terni (111501 inhabitants)
39 Km SE of Perugia (166134 inhabitants)
58 Km NE of Viterbo (67173 inhabitants)
82 Km NW of L'Aquila (69753 inhabitants)
88 Km N of Guidonia Montecelio (88673 inhabitants)
92 Km W of Teramo (54892 inhabitants)
93 Km N of Tivoli (56533 inhabitants)
95 Km SE of Arezzo (99543 inhabitants)
100 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
Bulletin
Rev1000 		ML 0.6 2023-01-03
22:21:33		 42.7893 12.5958 7 2024-03-01
17:17:53		 Bollettino Sismico Italiano INGV 113953391
Reviewed
Rev100 		ML 0.6 2023-01-03
22:21:33		 42.7968 12.5698 8 2023-01-03
22:46:15		 Sala Sismica INGV-Roma 113291671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-03 22:21:33 ± 0.13
Latitude 42.7893 ± 0.0036
Longitude 12.5958 ± 0.0123
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 113953391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1038
Semi-minor axis of confidence ellipse (meter) 239
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 281
Circular confidence region, given by single value of horizontal uncertainty (meter) 1040.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.02338
Epicentral distance of station farthest from the epicenter (degree) 0.38221
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 113291671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-03 22:46:15

ML:0.6

Field Value
Value 0.6
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 113953391
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-02-01 09:02:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2023-01-03T22:21:49.05 0.6 undecidable manual S 83 42.4242 50 0.27 45
IV.CESI.HHZ. 2023-01-03T22:21:46.34 0.1 undecidable manual S 46 34.6431 101 0.12 93
IV.ASSB.HHZ. 2023-01-03T22:21:44.23 0.1 undecidable manual S 10 28.5492 103 0.07 95
IV.NRCA.HHZ. 2023-01-03T22:21:42.36 0.1 undecidable manual P 83 42.4242 50 -0.16 91
IV.CESI.HHZ. 2023-01-03T22:21:41.05 0.1 undecidable manual P 46 34.6431 101 -0.01 95
IV.CESX.HHZ. 2023-01-03T22:21:41.47 0.1 undecidable manual S 182 20.0688 108 0.15 95
IV.ASSB.HHZ. 2023-01-03T22:21:39.66 0.1 undecidable manual P 10 28.5492 103 -0.2 93
IV.ARRO.EHZ. 2023-01-03T22:21:39.14 0.3 undecidable manual P 149 27.1506 104 -0.44 66
IV.CESX.HHZ. 2023-01-03T22:21:38.29 0.1 undecidable manual P 182 20.0688 108 0.07 97
IT.GNU.HGE. 2023-01-03T22:21:36.40 0.1 undecidable manual S 308 2.5974 158 -0.05 100
IV.MOMA.HHZ. 2023-01-03T22:21:36.30 0.1 undecidable manual S 308 2.5974 158 -0.15 98
IT.GNU.HGE. 2023-01-03T22:21:35.61 0.1 undecidable manual P 308 2.5974 158 0.2 97
IV.MOMA.HHZ. 2023-01-03T22:21:35.57 0.1 undecidable manual P 308 2.5974 158 0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESX.HHN. ML:0.6 0.000031 0.2 AML other m 2023-01-03T22:21:41.75
IV.CESX.HHE. ML:0.6 0.000030550000000000004 0.94 AML other m 2023-01-03T22:21:43.61
IV.ASSB.HHN. ML:0.4 0.000014599999999999999 0.96 AML other m 2023-01-03T22:21:44.70
IV.ASSB.HHE. ML:0.6 0.00001865 0.44 AML other m 2023-01-03T22:21:44.71
IV.NRCA.HHE. ML:0.7 0.0000138 0.5 AML other m 2023-01-03T22:21:49.91
IV.NRCA.HHN. ML:0.8 0.0000194 0.96 AML other m 2023-01-03T22:21:50.48
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