Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 03-12-2020 and time 15:39:57 (UTC) in region 1 km NW Ussita (MC)

A magnitude ML 1.1 earthquake occured in region: 1 km NW Ussita (MC), on

  • 03-12-2020 15:39:57 (UTC)
  • 03-12-2020 16:39:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9520, 13.1250 at 8 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 1 444 444
Visso MC 4 1107 1551
Castelsantangelo sul Nera MC 7 281 1832
Bolognola MC 10 142 1974
Acquacanina MC 10 121 2095
Fiastra MC 10 559 2654
Fiordimonte MC 10 202 2856
Preci PG 11 724 3580
Monte Cavallo MC 11 145 3725
Pieve Torina MC 12 1458 5183
Pievebovigliana MC 13 866 6049
Muccia MC 16 915 6964
Sarnano MC 17 3264 10228
Montemonaco AP 18 604 10832
Sellano PG 18 1079 11911
Montefortino FM 18 1178 13089
Norcia PG 18 4957 18046
Amandola FM 19 3629 21675
Serravalle di Chienti MC 19 1070 22745

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
58 Km NE of Terni (111501 inhabitants)
62 Km E of Perugia (166134 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
97 Km NW of Montesilvano (53738 inhabitants)
100 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 1.1 2020-12-03
15:39:57		 42.9522 13.1247 8 2020-12-03
15:54:11		 Sala Sismica INGV-Roma 85177161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-03 15:39:57 ± 0.08
Latitude 42.9522 ± 0.0027
Longitude 13.1247 ± 0.0025
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85177161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 270
Semi-minor axis of confidence ellipse (meter) 122
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 36
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37772
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 85177161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-03 15:54:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IT.LNT.HGZ. 2020-12-03T15:41:39.26 3.0 undecidable manual Pg 11.43 0
IV.ZONE.HHZ. 2020-12-03T15:41:38.55 3.0 undecidable manual Sn 0.38 0
IV.HAGA.HHZ. 2020-12-03T15:41:37.64 3.0 undecidable manual Pg 9.34 0
IV.PCN.HNZ. 2020-12-03T15:41:32.39 3.0 undecidable manual Sn 2.26 0
IV.MTGR.HHZ. 2020-12-03T15:41:30.52 3.0 positive manual Pg 13.59 0
GU.REMY.HHZ. 2020-12-03T15:41:29.80 3.0 negative manual Pg 12.74 0
GU.ENR.HHZ. 2020-12-03T15:41:15.71 3.0 undecidable manual Pg 9.95 0
IV.MTMR.EHZ. 2020-12-03T15:41:08.05 3.0 undecidable manual Sn -6.72 0
GU.GSCL.HHZ. 2020-12-03T15:41:05.68 3.0 undecidable manual Sn -2.27 0
IV.MTRZ.HHZ. 2020-12-03T15:40:53.32 3.0 undecidable manual Sn -3.11 0
IV.MTRZ.HHZ. 2020-12-03T15:40:32.12 3.0 undecidable manual Pg 0.64 0
IT.FIE.HGZ. 2020-12-03T15:40:26.13 3.0 negative manual P -1.83 0
IV.LRP.EHZ. 2020-12-03T15:40:24.56 3.0 undecidable manual P -1.66 0
IV.LAV9.HHZ. 2020-12-03T15:40:24.48 3.0 positive manual P -0.86 0
IV.BADI.EHZ. 2020-12-03T15:40:14.75 3.0 undecidable manual P -1.54 0
IV.EL6.EHZ. 2020-12-03T15:40:05.57 0.6 undecidable manual P 357 41.9247 50 -0.12 46
IV.ASSB.HHZ. 2020-12-03T15:40:05.06 3.0 undecidable manual P -0.88 0
IV.MMO1.EHZ. 2020-12-03T15:40:04.15 0.6 undecidable manual S 110 17.4714 115 0.01 50
IV.CSP1.EHZ. 2020-12-03T15:40:04.20 0.6 undecidable manual S 23 16.7721 116 0.26 47
IV.CESI.HHZ. 2020-12-03T15:40:04.73 0.1 undecidable manual S 288 18.7701 114 0.16 96
IT.MTCL.HGZ. 2020-12-03T15:40:02.06 0.3 undecidable manual S 295 11.1777 126 -0.21 72
IV.NRCA.HHZ. 2020-12-03T15:40:02.95 0.3 undecidable manual S 184 13.1757 122 0.11 73
IV.CESI.HHZ. 2020-12-03T15:40:01.56 0.1 undecidable manual P 288 18.7701 114 0 99
IV.MC2.EHZ. 2020-12-03T15:40:01.03 0.3 undecidable manual S 131 6.8931 140 -0.14 74
IV.FEMA.HNZ. 2020-12-03T15:40:01.06 0.3 undecidable manual S 280 6.1938 143 0.04 75
IV.MMO1.EHZ. 2020-12-03T15:40:01.30 0.3 positive manual P 110 17.4714 115 -0.01 74
IV.FDMO.HHZ. 2020-12-03T15:40:01.90 0.6 undecidable manual S 342 9.879 130 0 50
IV.CSP1.EHZ. 2020-12-03T15:40:01.32 0.1 undecidable manual P 23 16.7721 116 0.12 97
IV.NRCA.HHZ. 2020-12-03T15:40:00.59 0.3 undecidable manual P 184 13.1757 122 0.03 75
IT.MTCL.HGZ. 2020-12-03T15:40:00.19 0.1 undecidable manual P 295 11.1777 126 -0.04 100
IV.FDMO.HHZ. 2020-12-03T15:39:59.73 0.3 undecidable manual P 342 9.879 130 -0.29 71
IV.MC2.EHZ. 2020-12-03T15:39:59.63 1.0 undecidable manual P 131 6.8931 140 0.03 25
IV.FEMA.HNZ. 2020-12-03T15:39:59.57 0.1 positive manual P 280 6.1938 143 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.8 0.00008083467499999999 0.2176 AML other m 2020-12-03T15:40:03.01
IV.FDMO.HHN. ML:0.8 0.0000843457 0.1792 AML other m 2020-12-03T15:40:02.20
IV.NRCA.HHE. ML:1.2 0.00016798225 0.1024 AML other m 2020-12-03T15:40:05.97
IV.NRCA.HHN. ML:1.0 0.0001244772 0.1536 AML other m 2020-12-03T15:40:03.04
IV.NRCA.HNE. ML:1.1 0.00015452785 0.1408 AML other m 2020-12-03T15:40:03.56
IV.NRCA.HNN. ML:1.2 0.0001872681 1.2416 AML other m 2020-12-03T15:40:02.96
IV.CSP1.EHE. ML:1.4 0.00023235840000000003 0.9728 AML other m 2020-12-03T15:40:05.03
IV.CSP1.EHN. ML:1.3 0.00016690815 0.2048 AML other m 2020-12-03T15:40:04.55
IV.CESI.HHE. ML:1.1 0.000097207835 0.1024 AML other m 2020-12-03T15:40:05.04
IV.CESI.HHN. ML:1.3 0.00015923585000000002 0.1664 AML other m 2020-12-03T15:40:05.02
IV.CESI.HNE. ML:1.2 0.00011421665 0.2816 AML other m 2020-12-03T15:40:06.59
IV.CESI.HNN. ML:1.3 0.00015926815 0.1152 AML other m 2020-12-03T15:40:05.03
IV.ASSB.HHE. ML:1.0 0.000033455559999999996 0.1664 AML other m 2020-12-03T15:40:11.88
IV.ASSB.HHN. ML:1.0 0.000035987555 0.1792 AML other m 2020-12-03T15:40:11.84
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