Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 06-01-2021 and time 08:07:19 (UTC) in region 2 km NE Ussita (MC)

A magnitude ML 1.3 earthquake occured in region: 2 km NE Ussita (MC), on

  • 06-01-2021 08:07:19 (UTC)
  • 06-01-2021 09:07:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9560, 13.1640 at 16 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 7 1107 1551
Castelsantangelo sul Nera MC 7 281 1832
Bolognola MC 7 142 1974
Acquacanina MC 8 121 2095
Fiastra MC 9 559 2654
Fiordimonte MC 11 202 2856
Preci PG 13 724 3580
Pieve Torina MC 14 1458 5038
Pievebovigliana MC 14 866 5904
Monte Cavallo MC 14 145 6049
Sarnano MC 14 3264 9313
Montefortino FM 15 1178 10491
Montemonaco AP 15 604 11095
Amandola FM 16 3629 14724
Muccia MC 17 915 15639
Montegallo AP 19 523 16162
Cessapalombo MC 19 512 16674
Norcia PG 19 4957 21631
Gualdo MC 19 815 22446

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
55 Km NW of Teramo (54892 inhabitants)
61 Km NE of Terni (111501 inhabitants)
65 Km E of Perugia (166134 inhabitants)
70 Km N of L'Aquila (69753 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
94 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 1.3 2021-01-06
08:07:19		 42.9557 13.164 16 2021-01-06
08:15:02		 Sala Sismica INGV-Roma 86045661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-06 08:07:19 ± 0.18
Latitude 42.9557 ± 0.0063
Longitude 13.1640 ± 0.0061
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 86045661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 697
Semi-minor axis of confidence ellipse (meter) 105
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 356
Circular confidence region, given by single value of horizontal uncertainty (meter) 700.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
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) 0.21854
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 86045661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-06 08:15:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRE.HHZ. 2021-01-06T08:07:34.46 3.0 positive manual P -0.1 0
IV.MF5.EHZ. 2021-01-06T08:07:29.20 0.3 undecidable manual S 81 24.2535 110 0.39 68
IV.MMO1.EHZ. 2021-01-06T08:07:26.20 0.1 undecidable manual S 115 14.6742 127 -0.33 93
IV.NRCA.HHZ. 2021-01-06T08:07:26.30 0.3 undecidable manual S 197 14.1747 128 -0.12 73
IV.CSP1.EHZ. 2021-01-06T08:07:26.70 0.3 undecidable manual S 12 15.4734 125 -0.01 74
IV.FDMO.HHZ. 2021-01-06T08:07:25.80 0.3 undecidable manual S 325 10.878 137 0.01 75
IV.MF5.EHZ. 2021-01-06T08:07:25.00 0.1 undecidable manual P 81 24.2535 110 0.06 97
IV.MC2.EHZ. 2021-01-06T08:07:25.30 0.3 undecidable manual S 158 5.2947 157 0.32 71
IV.NRCA.HHZ. 2021-01-06T08:07:23.51 0.1 undecidable manual P 197 14.1747 128 -0.05 99
IV.CSP1.EHZ. 2021-01-06T08:07:23.66 0.1 undecidable manual P 12 15.4734 125 -0.06 98
IV.FDMO.HHZ. 2021-01-06T08:07:23.23 0.1 negative manual P 325 10.878 137 0.04 100
IV.MMO1.EHZ. 2021-01-06T08:07:23.36 0.1 undecidable manual P 115 14.6742 127 -0.26 94
IV.MC2.EHZ. 2021-01-06T08:07:22.89 0.1 positive manual P 158 5.2947 157 0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.0 0.00007280000000000001 1.78 AML other m 2021-01-06T08:07:26.99
IV.FDMO.HHN. ML:0.0 0.00014749999999999998 0.14 AML other m 2021-01-06T08:07:26.25
IV.NRCA.HHN. ML:0.0 0.00015205 0.12 AML other m 2021-01-06T08:07:26.51
IV.NRCA.HHE. ML:0.0 0.0001325 0.98 AML other m 2021-01-06T08:07:26.55
IV.NRCA.HNE. ML:0.0 0.0001570086 0.416 AML other m 2021-01-06T08:07:27.27
IV.NRCA.HNN. ML:0.0 0.0002900936 0.8064 AML other m 2021-01-06T08:07:26.51
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