Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 28-10-2020 and time 17:45:54 (UTC) in region 4 km NW Ussita (MC)

A magnitude ML 1.4 earthquake occured in region: 4 km NW Ussita (MC), on

  • 28-10-2020 17:45:54 (UTC)
  • 28-10-2020 18:45:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9740, 13.1180 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 4 444 444
Visso MC 5 1107 1551
Fiordimonte MC 7 202 1753
Fiastra MC 8 559 2312
Acquacanina MC 8 121 2433
Castelsantangelo sul Nera MC 9 281 2714
Bolognola MC 9 142 2856
Pieve Torina MC 10 1458 4314
Monte Cavallo MC 10 145 4459
Pievebovigliana MC 10 866 5325
Preci PG 12 724 6049
Muccia MC 14 915 6964
Sarnano MC 17 3264 10228
Serravalle di Chienti MC 17 1070 11298
Sellano PG 18 1079 12377
Camerino MC 19 6974 19351
Montefortino FM 19 1178 20529
Cessapalombo MC 19 512 21041
Montemonaco AP 19 604 21645
Amandola FM 20 3629 25274

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
59 Km NW of Teramo (54892 inhabitants)
60 Km NE of Terni (111501 inhabitants)
61 Km E of Perugia (166134 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
97 Km S of Fano (60888 inhabitants)
99 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 1.4 2020-10-28
17:45:54		 42.9742 13.1177 9 2021-02-26
14:56:03		 Bollettino Sismico Italiano INGV 84472431
Reviewed
Rev100 		ML 1.4 2020-10-28
17:45:54		 42.9728 13.1173 9 2020-10-28
17:50:53		 Sala Sismica INGV-Roma 84219561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-28 17:45:54 ± 0.04
Latitude 42.9742 ± 0.0018
Longitude 13.1177 ± 0.0025
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 84472431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 234
Semi-minor axis of confidence ellipse (meter) 214
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 61
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 55
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.35523
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 84472431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-11-05 14:09:20

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 84219561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-28 17:50:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2020-10-28T17:46:19.33 3.0 undecidable manual S -2.12 0
IV.EL6.EHZ. 2020-10-28T17:46:08.39 0.3 undecidable manual S 358 39.4272 50 0.25 68
IV.ASSB.HHZ. 2020-10-28T17:46:07.90 0.1 undecidable manual S 282 38.0286 50 0.14 92
IV.GAVE.EHZ. 2020-10-28T17:46:07.23 0.1 undecidable manual S 210 36.1416 50 -0.04 95
IV.SNTG.HHZ. 2020-10-28T17:46:06.54 0.6 undecidable manual S 335 34.3434 50 -0.23 46
IV.GUMA.HHZ. 2020-10-28T17:46:02.93 0.3 undecidable manual S 61 20.1687 115 0.45 67
IV.MML1.HNE. 2020-10-28T17:46:02.24 0.1 undecidable manual S 323 19.4694 116 -0.01 98
IV.ASSB.HHZ. 2020-10-28T17:46:02.20 0.1 undecidable manual P 282 38.0286 50 -0.07 94
IV.EL6.EHZ. 2020-10-28T17:46:02.22 0.1 undecidable manual P 358 39.4272 50 -0.27 90
IV.SNTG.HHZ. 2020-10-28T17:46:01.54 0.1 undecidable manual P 335 34.3434 50 -0.16 93
IV.CESI.HHZ. 2020-10-28T17:46:01.83 0.1 undecidable manual S 281 17.5713 118 0.15 96
IV.GAVE.EHZ. 2020-10-28T17:46:01.90 0.1 undecidable manual P 210 36.1416 50 -0.09 94
IV.MMO1.EHZ. 2020-10-28T17:46:01.86 0.1 undecidable manual S 116 18.87 116 -0.22 94
IV.CSP1.EHZ. 2020-10-28T17:46:00.78 0.3 undecidable manual S 28 14.874 122 -0.06 73
IV.NRCA.HHZ. 2020-10-28T17:46:00.91 0.3 undecidable manual S 181 15.5733 121 -0.16 72
IV.CESI.HHZ. 2020-10-28T17:45:59.00 0.1 undecidable manual P 281 17.5713 118 0.24 94
IT.MTCL.HGZ. 2020-10-28T17:45:59.36 0.1 undecidable manual S 283 9.879 133 -0.1 98
IV.MML1.HNE. 2020-10-28T17:45:59.12 0.1 undecidable manual P 323 19.4694 116 0.03 97
IV.GUMA.HHZ. 2020-10-28T17:45:59.50 0.1 undecidable manual P 61 20.1687 115 0.28 93
IV.MC2.EHZ. 2020-10-28T17:45:59.39 0.6 undecidable manual S 140 9.0798 136 0.12 49
IV.NRCA.HHZ. 2020-10-28T17:45:58.42 0.1 undecidable manual P 181 15.5733 121 0.02 98
IV.FEMA.HNE. 2020-10-28T17:45:58.52 0.1 undecidable manual S 256 5.6943 149 -0.03 100
IV.FDMO.HHZ. 2020-10-28T17:45:58.40 0.1 undecidable manual S 340 7.3815 142 -0.48 91
IV.MMO1.EHZ. 2020-10-28T17:45:58.91 0.1 undecidable manual P 116 18.87 116 -0.08 97
IV.PF6.EHN. 2020-10-28T17:45:58.95 0.1 undecidable manual P 19 19.1697 116 -0.09 96
IV.CSP1.EHZ. 2020-10-28T17:45:58.29 0.1 undecidable manual P 28 14.874 122 0.01 99
IT.MTCL.HGZ. 2020-10-28T17:45:57.70 0.1 undecidable manual P 283 9.879 133 0.22 95
IV.MC2.EHZ. 2020-10-28T17:45:57.45 0.1 undecidable manual P 140 9.0798 136 0.08 98
IV.FEMA.HNE. 2020-10-28T17:45:57.10 0.1 undecidable manual P 256 5.6943 149 0.15 97
IV.FDMO.HHZ. 2020-10-28T17:45:57.09 0.1 undecidable manual P 340 7.3815 142 -0.05 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.2 0.0002475 0.22 AML other m 2020-10-28T17:45:58.79
IV.FDMO.HHE. ML:1.0 0.000145 0.26 AML other m 2020-10-28T17:45:58.85
IV.CSP1.EHN. ML:1.6 0.0003505 0.5 AML other m 2020-10-28T17:46:00.59
IV.CSP1.EHE. ML:1.6 0.000435 0.38 AML other m 2020-10-28T17:46:01.09
IV.NRCA.HHE. ML:1.5 0.0002965 0.12 AML other m 2020-10-28T17:46:01.41
IV.NRCA.HHN. ML:1.3 0.000195 0.62 AML other m 2020-10-28T17:46:01.06
IV.CESI.HHE. ML:1.2 0.000144 0.5 AML other m 2020-10-28T17:46:02.14
IV.CESI.HHN. ML:1.5 0.0002685 0.18 AML other m 2020-10-28T17:46:02.20
IV.GUMA.HHN. ML:1.4 0.000202 0.24 AML other m 2020-10-28T17:46:03.18
IV.GUMA.HHE. ML:1.2 0.0001285 1.1 AML other m 2020-10-28T17:46:04.22
IV.EL6.EHE. ML:1.6 0.0001305 1.88 AML other m 2020-10-28T17:46:09.00
IV.EL6.EHN. ML:1.5 0.00011605 0.3 AML other m 2020-10-28T17:46:09.36
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