Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 30-12-2022 and time 23:49:39 (UTC) in region 1 km E Ussita (MC)

A magnitude ML 0.9 earthquake occured in region: 1 km E Ussita (MC), on

  • 30-12-2022 23:49:39 (UTC)
  • 31-12-2022 00:49:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9420, 13.1550 at 6 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
Ussita MC 1 444 444
Castelsantangelo sul Nera MC 5 281 725
Visso MC 6 1107 1832
Bolognola MC 8 142 1974
Acquacanina MC 10 121 2095
Fiastra MC 11 559 2654
Preci PG 12 724 3378
Fiordimonte MC 12 202 3580
Monte Cavallo MC 14 145 3725
Pieve Torina MC 14 1458 5183
Pievebovigliana MC 15 866 6049
Montemonaco AP 15 604 6653
Montefortino FM 15 1178 7831
Sarnano MC 16 3264 11095
Amandola FM 17 3629 14724
Norcia PG 17 4957 19681
Muccia MC 18 915 20596
Montegallo AP 18 523 21119
Sellano PG 19 1079 22198

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
55 Km NW of Teramo (54892 inhabitants)
59 Km NE of Terni (111501 inhabitants)
65 Km E of Perugia (166134 inhabitants)
69 Km N of L'Aquila (69753 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
94 Km NW of Montesilvano (53738 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 0.9 2022-12-30
23:49:39		 42.9423 13.1553 6 2024-03-01
15:28:19		 Bollettino Sismico Italiano INGV 114862701
Reviewed
Rev100 		ML 1.0 2022-12-30
23:49:39		 42.9432 13.1532 6 2022-12-30
23:56:10		 Sala Sismica INGV-Roma 113201521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-12-30 23:49:39 ± 0.13
Latitude 42.9423 ± 0.0036
Longitude 13.1553 ± 0.0037
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 114862701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 415
Semi-minor axis of confidence ellipse (meter) 169
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 30
Circular confidence region, given by single value of horizontal uncertainty (meter) 410.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.22753
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 113201521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-12-30 23:56:10

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 114862701
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-02-27 19:14:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2022-12-30T23:50:06.02 3.0 undecidable manual S -0.1 0
IV.MF5.EHZ. 2022-12-30T23:49:48.57 1.0 undecidable manual S 78 25.2525 103 0.47 22
IV.MML1.EHZ. 2022-12-30T23:49:47.87 0.3 undecidable manual S 322 24.1536 104 0.13 72
IV.CESI.HHZ. 2022-12-30T23:49:47.11 0.3 undecidable manual S 289 21.4674 105 0.25 71
IV.GUMA.HHZ. 2022-12-30T23:49:46.72 0.3 undecidable manual S 47 19.7691 106 0.44 68
IV.NRCA.HHZ. 2022-12-30T23:49:44.48 0.3 undecidable manual S 196 12.4764 115 0.56 67
IV.MMO1.EHZ. 2022-12-30T23:49:44.61 0.3 undecidable manual S 109 14.6742 112 0 75
IV.MF5.EHZ. 2022-12-30T23:49:44.50 0.3 undecidable manual P 78 25.2525 103 0.19 71
IT.MTCL.HGZ. 2022-12-30T23:49:44.19 0.3 undecidable manual S 294 13.875 113 -0.16 73
7F.SIB2.EHZ. 2022-12-30T23:49:44.07 0.3 undecidable manual S 115 13.3755 114 -0.1 74
IV.GUMA.HHZ. 2022-12-30T23:49:43.45 0.1 undecidable manual P 47 19.7691 106 0.2 96
IV.FEMA.HNE. 2022-12-30T23:49:43.04 0.6 undecidable manual S 284 8.88 123 0.24 48
IV.MML1.EHZ. 2022-12-30T23:49:43.89 0.1 undecidable manual P 322 24.1536 104 -0.21 95
IV.FDMO.HHZ. 2022-12-30T23:49:43.59 0.3 undecidable manual S 332 11.7771 116 -0.1 74
IV.CESI.HHZ. 2022-12-30T23:49:43.39 0.1 undecidable manual P 289 21.4674 105 -0.2 95
7F.SIB1.EHE. 2022-12-30T23:49:42.64 0.6 undecidable manual S 120 10.6782 118 -0.71 42
IV.MMO1.EHZ. 2022-12-30T23:49:42.24 0.1 undecidable manual P 109 14.6742 112 -0.05 100
IV.FDMO.HHZ. 2022-12-30T23:49:41.56 0.1 undecidable manual P 332 11.7771 116 -0.2 97
IT.MTCL.HGZ. 2022-12-30T23:49:41.92 0.1 undecidable manual P 294 13.875 113 -0.22 96
7F.SIB2.EHZ. 2022-12-30T23:49:41.83 0.1 undecidable manual P 115 13.3755 114 -0.21 97
IV.MC2.EHZ. 2022-12-30T23:49:41.65 0.3 undecidable manual S 142 4.3956 143 0 77
IV.NRCA.HHZ. 2022-12-30T23:49:41.94 0.1 undecidable manual P 196 12.4764 115 0.05 100
7F.SIB3.EHZ. 2022-12-30T23:49:41.86 0.1 undecidable manual P 129 11.9769 116 0.08 100
IV.FEMA.HNE. 2022-12-30T23:49:41.45 0.3 undecidable manual P 284 8.88 123 0.21 73
7F.SIB1.EHE. 2022-12-30T23:49:41.49 0.3 undecidable manual P 120 10.6782 118 -0.07 75
IV.MC2.EHZ. 2022-12-30T23:49:40.46 0.1 undecidable manual P 142 4.3956 143 -0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.0 0.00014085105000000001 0.1792 AML other m 2022-12-30T23:49:44.24
IV.FDMO.HHE. ML:0.8 0.00008845 0.16 AML other m 2022-12-30T23:49:44.26
IV.NRCA.HHN. ML:1.1 0.00016499999999999997 0.14 AML other m 2022-12-30T23:49:45.08
IV.NRCA.HHE. ML:1.0 0.000128 0.16 AML other m 2022-12-30T23:49:46.70
IV.CESI.HHN. ML:1.0 0.0000699 0.12 AML other m 2022-12-30T23:49:47.61
IV.CESI.HHE. ML:0.8 0.0000475 0.58 AML other m 2022-12-30T23:49:47.68
IV.NRCA.HNN. ML:1.1 0.000147689815 0.6016 AML other m 2022-12-30T23:49:45.01
IV.NRCA.HNE. ML:1.0 0.00013079945500000002 0.1536 AML other m 2022-12-30T23:49:46.70
IV.MMO1.EHE. ML:0.6 0.00005038251 0.192 AML other m 2022-12-30T23:49:45.28
IV.MMO1.EHN. ML:0.4 0.00003084956 0.2176 AML other m 2022-12-30T23:49:45.63
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