Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 24-09-2020 and time 18:10:18 (UTC) in region 3 km NW Ussita (MC)

A magnitude ML 1.3 earthquake occured in region: 3 km NW Ussita (MC), on

  • 24-09-2020 18:10:18 (UTC)
  • 24-09-2020 20:10:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9730, 13.1200 at 6 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 4 444 444
Visso MC 5 1107 1551
Fiordimonte MC 8 202 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 16 3264 10228
Serravalle di Chienti MC 18 1070 11298
Sellano PG 18 1079 12377
Montefortino FM 18 1178 13555
Montemonaco AP 19 604 14159
Camerino MC 19 6974 21133
Cessapalombo MC 19 512 21645
Amandola FM 19 3629 25274
Norcia PG 20 4957 30231

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)
98 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 1.3 2020-09-24
18:10:18		 42.9728 13.1202 6 2020-09-24
18:19:03		 Sala Sismica INGV-Roma 83206041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-24 18:10:18 ± 0.09
Latitude 42.9728 ± 0.0018
Longitude 13.1202 ± 0.0025
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83206041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 240
Semi-minor axis of confidence ellipse (meter) 83
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 25
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.24911
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 83206041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-24 18:19:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-09-24T18:10:28.44 3.0 undecidable manual P -0.01 0
IV.MMO1.EHZ. 2020-09-24T18:10:25.08 0.3 undecidable manual S 116 18.6702 109 -0.1 73
IV.EL6.EHZ. 2020-09-24T18:10:25.58 3.0 negative manual P -0.39 0
IV.ASSB.HHZ. 2020-09-24T18:10:25.35 3.0 negative manual P -0.15 0
IV.GAVE.EHZ. 2020-09-24T18:10:25.26 3.0 positive manual P 0.22 0
IV.FOSV.EHZ. 2020-09-24T18:10:24.38 3.0 undecidable manual P -2.55 0
IV.CESI.HHZ. 2020-09-24T18:10:24.90 0.1 undecidable manual S 282 17.871 110 -0.01 99
IV.MF5.EHZ. 2020-09-24T18:10:24.25 0.3 undecidable manual P 86 27.6501 103 0.24 69
IV.NRCA.HHZ. 2020-09-24T18:10:24.05 0.3 undecidable manual S 182 15.4734 112 -0.08 73
IV.CSP1.EHZ. 2020-09-24T18:10:23.96 0.1 undecidable manual S 27 14.874 113 0.01 99
IV.GUMA.HHZ. 2020-09-24T18:10:22.81 0.1 negative manual P 60 20.0688 108 0.25 94
IT.MTCL.HGE. 2020-09-24T18:10:22.55 0.1 undecidable manual S 283 10.0788 122 0.08 99
IV.MC2.EHZ. 2020-09-24T18:10:22.19 0.3 undecidable manual S 141 8.7801 126 0.08 74
IV.MMO1.EHZ. 2020-09-24T18:10:22.06 0.3 undecidable manual P 116 18.6702 109 -0.22 71
IV.CESI.HHZ. 2020-09-24T18:10:22.13 0.1 positive manual P 282 17.871 110 0 99
IV.CSP1.EHZ. 2020-09-24T18:10:21.51 0.6 positive manual P 27 14.874 113 -0.06 49
IV.FEMA.HNE. 2020-09-24T18:10:21.57 0.3 undecidable manual S 258 5.7942 138 0.24 72
IV.FDMO.HHZ. 2020-09-24T18:10:21.54 0.1 undecidable manual S 339 7.5813 130 -0.22 96
IV.NRCA.HHZ. 2020-09-24T18:10:21.57 0.3 positive manual P 182 15.4734 112 -0.11 73
IV.FEMA.HNE. 2020-09-24T18:10:20.11 0.1 undecidable manual P 258 5.7942 138 0.05 100
IV.FDMO.HHZ. 2020-09-24T18:10:20.25 0.1 undecidable manual P 339 7.5813 130 -0.06 99
IT.MTCL.HGE. 2020-09-24T18:10:20.66 0.1 undecidable manual P 283 10.0788 122 -0.06 99
IV.MC2.EHZ. 2020-09-24T18:10:20.49 0.1 undecidable manual P 141 8.7801 126 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHN. ML:1.5 0.000317 0.28 AML other m 2020-09-24T18:10:24.38
IV.CSP1.EHE. ML:1.4 0.000261 0.6 AML other m 2020-09-24T18:10:24.60
IV.NRCA.HHN. ML:1.3 0.0001955 0.38 AML other m 2020-09-24T18:10:24.87
IV.CESI.HHE. ML:1.2 0.00013905000000000002 0.44 AML other m 2020-09-24T18:10:25.37
IV.CESI.HHN. ML:1.2 0.00016 0.48 AML other m 2020-09-24T18:10:25.49
IV.NRCA.HHE. ML:1.2 0.00017999999999999998 1.2 AML other m 2020-09-24T18:10:26.99
IV.GUMA.HHN. ML:1.4 0.0002155 0.16 AML other m 2020-09-24T18:10:26.56
IV.GUMA.HHE. ML:1.2 0.0001275 1.2 AML other m 2020-09-24T18:10:27.27
IV.GAVE.EHN. ML:1.4 0.0000927 1.48 AML other m 2020-09-24T18:10:30.02
IV.GAVE.EHE. ML:1.2 0.00006475 0.86 AML other m 2020-09-24T18:10:30.33
IV.ASSB.HHE. ML:1.0 0.000040050000000000004 1.42 AML other m 2020-09-24T18:10:31.27
IV.ASSB.HHN. ML:0.9 0.00003095 1.2 AML other m 2020-09-24T18:10:32.27
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