Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 28-11-2020 and time 13:02:52 (Italy) in region 2 km NE Ussita (MC)

A magnitude ML 1.6 earthquake occured in region: 2 km NE Ussita (MC), on

  • 28-11-2020 12:02:52 (UTC)
  • 28-11-2020 13:02:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.96, 13.15 at 9 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 2 444 444
Visso MC 6 1107 1551
Castelsantangelo sul Nera MC 7 281 1832
Bolognola MC 8 142 1974
Acquacanina MC 9 121 2095
Fiastra MC 9 559 2654
Fiordimonte MC 10 202 2856
Preci PG 12 724 3580
Monte Cavallo MC 13 145 3725
Pieve Torina MC 13 1458 5183
Pievebovigliana MC 13 866 6049
Sarnano MC 15 3264 9313
Montefortino FM 16 1178 10491
Montemonaco AP 16 604 11095
Muccia MC 16 915 12010
Amandola FM 17 3629 15639
Norcia PG 19 4957 20596
Cessapalombo MC 19 512 21108
Sellano PG 20 1079 22187
Montegallo AP 20 523 22710
Gualdo MC 20 815 23525

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
60 Km NE of Terni (111501 inhabitants)
64 Km E of Perugia (166134 inhabitants)
70 Km N of L'Aquila (69753 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
95 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
Bulletin
Rev1000 		ML 1.6 2020-11-28
12:02:52		 42.96 13.15 9 2021-02-26
14:56:11		 Bollettino Sismico Italiano INGV 85597521
Reviewed
Rev100 		ML 1.6 2020-11-28
12:02:52		 42.96 13.15 8 2020-11-28
12:09:04		 Sala Sismica INGV-Roma 85067831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-28 12:02:52 ± 0.06
Latitude 42.96 ± 0.00
Longitude 13.15 ± 0.00
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85597521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 417
Semi-minor axis of confidence ellipse (meter) 157
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 52
Circular confidence region, given by single value of horizontal uncertainty (meter) 420
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 81
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.47214
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 85597521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-21 10:23:04

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 85067831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-28 12:09:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-11-28T12:03:10.01 0.3 undecidable manual S 135 0.4721 50 0.17 68
IV.ATCC.EHZ. 2020-11-28T12:03:09.42 0.3 undecidable manual S 302 0.4362 50 0.66 60
IV.EL6.EHZ. 2020-11-28T12:03:07.06 0.3 undecidable manual S 355 0.3732 50 0.15 69
IV.SNTG.HHZ. 2020-11-28T12:03:06.05 0.3 undecidable manual S 333 0.3345 50 0.3 68
IV.SMA1.EHZ. 2020-11-28T12:03:06.22 0.3 undecidable manual S 157 0.3543 50 -0.12 70
IV.MF5.EHN. 2020-11-28T12:03:03.22 0.3 undecidable manual S 82 0.2293 109 1.05 52
IV.MTRA.EHE. 2020-11-28T12:03:03.64 0.3 undecidable manual S 138 0.2707 106 -0.04 72
IV.TERO.HHZ. 2020-11-28T12:03:02.42 0.3 undecidable manual P 135 0.4721 50 -0.24 67
IV.ATCC.EHZ. 2020-11-28T12:03:01.81 0.3 undecidable manual P 302 0.4362 50 -0.22 67
IV.MML1.HNE. 2020-11-28T12:03:01.60 0.3 undecidable manual S 320 0.2032 111 0.39 68
IV.EL6.EHZ. 2020-11-28T12:03:00.59 0.1 undecidable manual P 355 0.3732 50 -0.38 88
IV.CESI.HHZ. 2020-11-28T12:03:00.84 0.1 undecidable manual S 285 0.1853 113 0.27 94
IV.SMA1.EHZ. 2020-11-28T12:03:00.21 0.1 undecidable manual P 157 0.3543 50 -0.42 88
IV.PF6.EHN. 2020-11-28T12:03:00.25 0.1 undecidable manual S 10 0.1835 113 -0.27 94
IV.LNSS.HHZ. 2020-11-28T12:03:00.73 0.1 undecidable manual P 193 0.3633 50 -0.06 94
IV.SNTG.HHZ. 2020-11-28T12:03:00.06 0.1 undecidable manual P 333 0.3345 50 -0.24 92
IV.GUMA.HHZ. 2020-11-28T12:03:00.64 0.1 undecidable manual S 52 0.1718 114 0.52 88
IV.NRCA.HHZ. 2020-11-28T12:02:59.33 0.1 undecidable manual S 192 0.1259 122 0.78 81
IV.SAP2.EHE. 2020-11-28T12:02:59.02 0.3 undecidable manual P 53 0.2302 109 0.78 59
IV.MF5.EHN. 2020-11-28T12:02:58.46 0.1 undecidable manual P 82 0.2293 109 0.23 94
IV.CSP1.EHZ. 2020-11-28T12:02:58.84 0.3 undecidable manual S 17 0.1403 119 -0.19 72
IV.MMO1.EHZ. 2020-11-28T12:02:58.90 0.1 undecidable manual S 114 0.1421 119 -0.19 96
IV.MTRA.EHE. 2020-11-28T12:02:58.89 0.3 undecidable manual P 138 0.2707 106 -0.21 70
IV.GUMA.HHZ. 2020-11-28T12:02:57.16 0.1 undecidable manual P 52 0.1718 114 0.12 97
IV.CESI.HHZ. 2020-11-28T12:02:57.39 0.1 negative manual P 285 0.1853 113 0.09 97
IV.MML1.HNE. 2020-11-28T12:02:57.45 0.1 negative manual P 320 0.2032 111 -0.22 94
IV.FEMA.HNE. 2020-11-28T12:02:57.10 0.3 undecidable manual S 274 0.0728 137 0.16 73
IV.MMO1.EHZ. 2020-11-28T12:02:56.30 0.1 undecidable manual P 114 0.1421 119 -0.15 97
IV.NRCA.HHZ. 2020-11-28T12:02:56.16 0.1 negative manual P 192 0.1259 122 0.02 100
IV.PF6.EHN. 2020-11-28T12:02:56.95 0.1 undecidable manual P 10 0.1835 113 -0.32 93
IV.CSP1.EHZ. 2020-11-28T12:02:56.26 0.1 negative manual P 17 0.1403 119 -0.15 97
IV.FDMO.HHZ. 2020-11-28T12:02:56.90 0.3 undecidable manual S 330 0.0908 130 -0.56 67
IV.FEMA.HNE. 2020-11-28T12:02:55.26 0.1 undecidable manual P 274 0.0728 137 0.05 100
IV.FDMO.HHZ. 2020-11-28T12:02:55.23 0.1 negative manual P 330 0.0908 130 -0.28 95
IT.MTCL.HGZ. 2020-11-28T12:02:55.92 0.3 undecidable manual P 289 0.1151 124 -0.01 75
IV.MC2.EHZ. 2020-11-28T12:02:55.98 0.3 undecidable manual S 147 0.054 145 -0.51 68
IV.MC2.EHZ. 2020-11-28T12:02:54.77 0.1 negative manual P 147 0.054 145 -0.18 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.8 0.0008675 0.56 AML other m 2020-11-28T12:02:57.95
IV.FDMO.HHN. ML:2 0.0013095 0.16 AML other m 2020-11-28T12:02:58.02
IV.CSP1.EHN. ML:1.9 0.000712 0.24 AML other m 2020-11-28T12:02:59.73
IV.NRCA.HHE. ML:1.8 0.0006325 0.14 AML other m 2020-11-28T12:02:59.84
IV.NRCA.HHN. ML:1.7 0.0005135 0.56 AML other m 2020-11-28T12:03:00.44
IV.CSP1.EHE. ML:1.9 0.0007385 0.64 AML other m 2020-11-28T12:03:00.22
IV.CESI.HHE. ML:1.8 0.000453 0.24 AML other m 2020-11-28T12:03:01.51
IV.CESI.HHN. ML:1.8 0.0004875 0.44 AML other m 2020-11-28T12:03:01.76
IV.GUMA.HHN. ML:1.8 0.0005765 1.32 AML other m 2020-11-28T12:03:02.72
IV.SNTG.HHE. ML:1.2 5.955E-5 0.44 AML other m 2020-11-28T12:03:06.08
IV.SNTG.HHN. ML:1.1 5.16E-5 1.3 AML other m 2020-11-28T12:03:07.70
IV.GUMA.HHE. ML:1.8 0.0004995 0.52 AML other m 2020-11-28T12:03:07.38
IV.LNSS.HHE. ML:1.3 7.175E-5 0.52 AML other m 2020-11-28T12:03:09.12
IV.ATCC.EHE. ML:1.5 8.045E-5 1.08 AML other m 2020-11-28T12:03:10.10
IV.ATCC.EHN. ML:1.5 8.325E-5 1.34 AML other m 2020-11-28T12:03:10.29
IV.SMA1.EHN. ML:1.3 6.905E-5 0.94 AML other m 2020-11-28T12:03:10.72
IV.LNSS.HHN. ML:1.2 6.205E-5 1.18 AML other m 2020-11-28T12:03:11.66
IV.SMA1.EHE. ML:1.4 8.255E-5 1 AML other m 2020-11-28T12:03:12.43
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