Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.3 on date 30-12-2021 and time 00:32:15 (UTC) in region 2 km N Ussita (MC)

A magnitude ML 0.3 earthquake occured in region: 2 km N Ussita (MC), on

  • 30-12-2021 00:32:15 (UTC)
  • 30-12-2021 01:32:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9630, 13.1420 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 2 444 444
Visso MC 6 1107 1551
Castelsantangelo sul Nera MC 8 281 1832
Bolognola MC 8 142 1974
Acquacanina MC 8 121 2095
Fiastra MC 8 559 2654
Fiordimonte MC 9 202 2856
Pieve Torina MC 12 1458 4314
Monte Cavallo MC 12 145 4459
Pievebovigliana MC 12 866 5325
Preci PG 13 724 6049
Sarnano MC 15 3264 9313
Muccia MC 16 915 10228
Montefortino FM 16 1178 11406
Montemonaco AP 17 604 12010
Amandola FM 18 3629 15639
Cessapalombo MC 19 512 16151
Sellano PG 19 1079 17230
Norcia PG 19 4957 22187
Serravalle di Chienti MC 20 1070 23257
Gualdo MC 20 815 24072

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
60 Km NE of Terni (111501 inhabitants)
63 Km E of Perugia (166134 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
96 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 0.3 2021-12-30
00:32:15		 42.9628 13.1422 11 2021-12-30
14:13:10		 Sala Sismica INGV-Roma 99152151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-30 00:32:15 ± 0.07
Latitude 42.9628 ± 0.0045
Longitude 13.1422 ± 0.0049
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 99152151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 394
Semi-minor axis of confidence ellipse (meter) 269
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 199
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.17897
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 99152151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-30 14:13:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.APEC.HHZ. 2021-12-30T00:32:28.60 3.0 negative manual P 0 0
IV.CESI.HHZ. 2021-12-30T00:32:23.84 0.6 undecidable manual S 284 19.869 93 0.23 48
IV.CSP1.EHZ. 2021-12-30T00:32:22.12 0.6 undecidable manual S 20 15.1737 98 -0.26 49
IV.MMO1.EHZ. 2021-12-30T00:32:22.79 0.6 undecidable manual S 115 16.5723 95 0.04 50
IV.NRCA.HHZ. 2021-12-30T00:32:21.80 0.6 undecidable manual S 189 14.5743 100 -0.41 47
IV.FDMO.HHZ. 2021-12-30T00:32:20.93 0.6 undecidable manual S 331 9.2796 126 0 51
IV.GUMA.HHZ. 2021-12-30T00:32:20.46 1.0 undecidable manual P 55 19.1697 93 0.22 24
IV.MC2.EHZ. 2021-12-30T00:32:20.48 0.3 undecidable manual S 146 6.8931 138 0.04 76
IV.CESI.HHZ. 2021-12-30T00:32:20.39 0.1 undecidable manual P 284 19.869 93 0.05 99
IV.NRCA.HHZ. 2021-12-30T00:32:19.46 0.3 positive manual P 189 14.5743 100 -0.06 76
IV.MMO1.EHZ. 2021-12-30T00:32:19.92 0.1 undecidable manual P 115 16.5723 95 0.08 99
IV.CSP1.EHZ. 2021-12-30T00:32:19.33 0.6 negative manual P 20 15.1737 98 -0.29 48
IV.MC2.EHZ. 2021-12-30T00:32:18.62 0.1 undecidable manual P 146 6.8931 138 0.11 100
IV.FDMO.HHZ. 2021-12-30T00:32:18.83 0.3 undecidable manual P 331 9.2796 126 0.05 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.2 0.00001645 0.76 AML other m 2021-12-30T00:32:23.18
IV.NRCA.HHE. ML:0.3 0.000018963465 0.18 AML other m 2021-12-30T00:32:22.19
IV.FDMO.HHE. ML:0.1 0.0000125631945 0.1 AML other m 2021-12-30T00:32:21.17
IV.FDMO.HHN. ML:0.3 0.00002251959 0.18 AML other m 2021-12-30T00:32:21.21
IV.CSP1.EHE. ML:0.2 0.000013710319999999998 0.12 AML other m 2021-12-30T00:32:22.56
IV.CSP1.EHN. ML:0.4 0.0000199066 1.22 AML other m 2021-12-30T00:32:22.21
IV.MMO1.EHE. ML:0.1 0.000010243888999999999 1.48 AML other m 2021-12-30T00:32:22.67
IV.MMO1.EHN. ML:0.5 0.000026324500000000002 4.28 AML other m 2021-12-30T00:32:27.67
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