Earthquake with magnitude of ML 1.0 on date 23-09-2020 and time 09:22:11 (UTC) in region 2 km NW Ussita (MC)

A magnitude ML 1.0 earthquake occured in region: 2 km NW Ussita (MC), on

  • 23-09-2020 09:22:11 (UTC)
  • 23-09-2020 11:22:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9630, 13.1250 at 10 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.

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 5 1107 1551
Castelsantangelo sul Nera MC 8 281 1832
Fiastra MC 9 559 2391
Acquacanina MC 9 121 2512
Fiordimonte MC 9 202 2714
Bolognola MC 9 142 2856
Monte Cavallo MC 11 145 3001
Pieve Torina MC 11 1458 4459
Pievebovigliana MC 12 866 5325
Preci PG 12 724 6049
Muccia MC 15 915 6964
Sarnano MC 17 3264 10228
Montefortino FM 18 1178 11406
Montemonaco AP 18 604 12010
Sellano PG 18 1079 13089
Serravalle di Chienti MC 19 1070 14159
Amandola FM 19 3629 17788
Norcia PG 19 4957 22745
Cessapalombo MC 20 512 23257
Camerino MC 20 6974 30231

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
58 Km NW of Teramo (54892 inhabitants)
59 Km NE of Terni (111501 inhabitants)
62 Km E of Perugia (166134 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
80 Km SW of Ancona (100861 inhabitants)
97 Km NW of Montesilvano (53738 inhabitants)
98 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 1.0 2020-09-23
09:22:11
42.9628 13.1252 10 2020-09-23
09:31:03
Sala Sismica INGV-Roma 83154941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-23 09:22:11 ± 0.09
Latitude 42.9628 ± 0.0036
Longitude 13.1252 ± 0.0061
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83154941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 460
Semi-minor axis of confidence ellipse (meter) 317
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 242
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.06925
Epicentral distance of station farthest from the epicenter (degree) 0.24551
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 83154941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-23 09:31:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2020-09-23T09:22:22.13 0.3 undecidable manual S 84 27.2505 50 0.33 69
IV.MML1.HNZ. 2020-09-23T09:22:19.63 0.3 undecidable manual S 323 20.868 115 -0.1 73
IV.CSP1.EHZ. 2020-09-23T09:22:18.04 0.3 undecidable manual S 24 15.6732 122 -0.12 73
IV.MMO1.EHZ. 2020-09-23T09:22:18.44 0.3 undecidable manual S 113 17.871 119 -0.37 69
IV.MF5.EHZ. 2020-09-23T09:22:17.50 0.1 undecidable manual P 84 27.2505 50 -0.06 97
IV.NRCA.HHZ. 2020-09-23T09:22:17.64 0.3 undecidable manual S 184 14.3745 124 -0.14 73
IV.FDMO.HHZ. 2020-09-23T09:22:16.52 0.3 undecidable manual S 339 8.6802 138 0.23 73
IV.MC2.EHZ. 2020-09-23T09:22:16.51 0.3 undecidable manual S 138 7.6812 142 0.45 69
IV.MML1.HNZ. 2020-09-23T09:22:16.29 0.1 undecidable manual P 323 20.868 115 -0.07 98
IV.NRCA.HHZ. 2020-09-23T09:22:15.16 0.1 undecidable manual P 184 14.3745 124 -0.08 99
IV.CSP1.EHZ. 2020-09-23T09:22:15.37 0.1 undecidable manual P 24 15.6732 122 -0.09 99
IV.MMO1.EHZ. 2020-09-23T09:22:15.61 0.1 undecidable manual P 113 17.871 119 -0.22 96
IV.CESI.HHZ. 2020-09-23T09:22:15.95 0.1 undecidable manual P 285 18.4704 118 0.01 100
IV.MC2.EHZ. 2020-09-23T09:22:14.48 0.1 undecidable manual P 138 7.6812 142 0.24 97
IV.FDMO.HHZ. 2020-09-23T09:22:14.45 0.1 undecidable manual P 339 8.6802 138 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.2 0.00014350000000000002 0.12 AML other m 2020-09-23T09:22:17.75
IV.FDMO.HHE. ML:0.8 0.000082448375 0.1152 AML other m 2020-09-23T09:22:17.02
IV.FDMO.HHN. ML:1.2 0.00020786435 0.16 AML other m 2020-09-23T09:22:16.65
IV.NRCA.HHN. ML:0.9 0.00007526152999999999 0.1408 AML other m 2020-09-23T09:22:17.80
IV.NRCA.HNE. ML:1.2 0.0001388826 0.128 AML other m 2020-09-23T09:22:17.68
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