Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 28-07-2020 and time 18:00:44 (UTC) in region 5 km NW Ussita (MC)

A magnitude ML 0.9 earthquake occured in region: 5 km NW Ussita (MC), on

  • 28-07-2020 18:00:44 (UTC)
  • 28-07-2020 20:00:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9870, 13.1180 at 12 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 5 444 444
Fiordimonte MC 6 202 646
Fiastra MC 6 559 1205
Visso MC 7 1107 2312
Acquacanina MC 7 121 2433
Pieve Torina MC 8 1458 3891
Pievebovigliana MC 9 866 4757
Bolognola MC 9 142 4899
Monte Cavallo MC 9 145 5044
Castelsantangelo sul Nera MC 11 281 5325
Muccia MC 12 915 6240
Preci PG 14 724 6964
Sarnano MC 16 3264 10228
Serravalle di Chienti MC 16 1070 11298
Camerino MC 17 6974 18272
Cessapalombo MC 18 512 18784
Sellano PG 19 1079 19863
Montefortino FM 19 1178 21041
Caldarola MC 19 1823 22864
Amandola FM 20 3629 26493
Montemonaco AP 20 604 27097

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
60 Km NW of Teramo (54892 inhabitants)
61 Km E of Perugia (166134 inhabitants)
61 Km NE of Terni (111501 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
77 Km SW of Ancona (100861 inhabitants)
96 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
Reviewed
Rev100 		ML 0.9 2020-07-28
18:00:44		 42.9867 13.1175 12 2020-07-28
18:09:46		 Sala Sismica INGV-Roma 81429451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-28 18:00:44 ± 0.09
Latitude 42.9867 ± 0.0027
Longitude 13.1175 ± 0.0049
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81429451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 352
Semi-minor axis of confidence ellipse (meter) 131
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 254
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 114
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.16548
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 3
Type of magnitude ML
Reference to an origin 81429451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-28 18:09:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MCIV.CHZ. 2020-07-28T18:01:16.01 3.0 undecidable manual S -0.48 0
IV.LRP.EHZ. 2020-07-28T18:01:08.26 3.0 undecidable manual P -1.43 0
IV.APEC.HHZ. 2020-07-28T18:00:57.27 3.0 undecidable manual P 0.8 0
IV.TERO.HHZ. 2020-07-28T18:00:54.25 3.0 undecidable manual P -2.18 0
IV.MML1.HNN. 2020-07-28T18:00:51.46 0.3 undecidable manual S 320 18.3705 102 0.03 74
IV.CESI.HNN. 2020-07-28T18:00:51.36 0.1 undecidable manual S 277 17.3715 103 0.19 95
IV.CSP1.EHZ. 2020-07-28T18:00:50.28 0.1 undecidable manual S 31 13.6752 114 0.05 99
IV.NRCA.HHZ. 2020-07-28T18:00:50.88 0.3 undecidable manual S 181 16.9719 104 -0.19 72
IV.MC2.EHZ. 2020-07-28T18:00:49.59 0.1 undecidable manual S 145 10.1787 127 0.17 97
IT.MTCL.HGE. 2020-07-28T18:00:49.13 0.3 undecidable manual S 275 9.5793 129 -0.18 72
IV.FDMO.HHZ. 2020-07-28T18:00:48.42 0.3 undecidable manual S 336 6.0939 146 -0.25 71
IV.MML1.HNN. 2020-07-28T18:00:48.29 0.3 undecidable manual P 320 18.3705 102 -0.02 73
IV.FEMA.HNE. 2020-07-28T18:00:48.83 0.6 undecidable manual S 244 6.0939 146 0.15 49
IV.CESI.HNN. 2020-07-28T18:00:48.14 0.1 undecidable manual P 277 17.3715 103 -0.02 98
IT.MTCL.HGE. 2020-07-28T18:00:47.04 0.1 undecidable manual P 275 9.5793 129 -0.04 99
IV.MC2.EHZ. 2020-07-28T18:00:47.28 0.1 undecidable manual P 145 10.1787 127 0.14 98
IV.CSP1.EHZ. 2020-07-28T18:00:47.65 0.1 undecidable manual P 31 13.6752 114 0.04 99
IV.NRCA.HHZ. 2020-07-28T18:00:47.92 0.1 undecidable manual P 181 16.9719 104 -0.17 95
IV.FDMO.HHZ. 2020-07-28T18:00:46.72 0.1 undecidable manual P 336 6.0939 146 0.01 100
IV.FEMA.HNE. 2020-07-28T18:00:46.79 0.3 undecidable manual P 244 6.0939 146 0.07 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.0 0.0000742 1.1 AML other m 2020-07-28T18:00:51.70
IV.NRCA.HHN. ML:1.0 0.0000902 0.14 AML other m 2020-07-28T18:00:51.85
IV.CSP1.EHE. ML:0.8 0.00006186419999999999 0.1792 AML other m 2020-07-28T18:00:51.12
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