Earthquake with magnitude of ML 1.1 on date 18-10-2020 and time 02:31:10 (Italy) in region 2 km SE Ussita (MC)

A magnitude ML 1.1 earthquake occured in region: 2 km SE Ussita (MC), on

  • 18-10-2020 00:31:10 (UTC)
  • 18-10-2020 02:31:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.93, 13.16 at 14 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
Castelsantangelo sul Nera MC 4 281 725
Visso MC 5 1107 1832
Bolognola MC 9 142 1974
Acquacanina MC 11 121 2095
Preci PG 11 724 2819
Fiastra MC 12 559 3378
Fiordimonte MC 13 202 3580
Monte Cavallo MC 14 145 3725
Montemonaco AP 15 604 4329
Pieve Torina MC 15 1458 5787
Montefortino FM 15 1178 6965
Pievebovigliana MC 16 866 7831
Norcia PG 16 4957 12788
Sarnano MC 17 3264 16052
Amandola FM 17 3629 19681
Montegallo AP 18 523 20204
Muccia MC 19 915 21119
Sellano PG 19 1079 22198

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
54 Km NW of Teramo (54892 inhabitants)
59 Km NE of Terni (111501 inhabitants)
65 Km E of Perugia (166134 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
94 Km NW of Montesilvano (53738 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.1 2020-10-18
00:31:10
42.93 13.16 14 2020-10-18
00:44:14
Sala Sismica INGV-Roma 83862241
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-18 00:31:10 ± 0.09
Latitude 42.93 ± 0.00
Longitude 13.16 ± 0.00
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83862241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 395
Semi-minor axis of confidence ellipse (meter) 246
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 237
Circular confidence region, given by single value of horizontal uncertainty (meter) 400
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.45146
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 83862241
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-18 00:44:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
XK.GIZZ.HHZ. 2020-10-18T00:32:43.07 3.0 undecidable manual Sg 15.27 0
MN.CLTB.HHZ. 2020-10-18T00:32:38.05 3.0 undecidable manual Sn -2.39 0
GU.GRAM.HHZ. 2020-10-18T00:32:34.17 3.0 undecidable manual Sg 7.26 0
IV.IMI.HHZ. 2020-10-18T00:32:09.46 3.0 undecidable manual Pg 11.98 0
IV.VULT.HHZ. 2020-10-18T00:31:55.95 3.0 undecidable manual Sg 6.58 0
OT.OT13.EHZ. 2020-10-18T00:31:29.91 3.0 positive manual Pn 1.67 0
IV.TERO.HHZ. 2020-10-18T00:31:26.17 0.3 undecidable manual S 133 0.4515 94 0.14 68
IV.RM33.HNZ. 2020-10-18T00:31:25.79 0.1 undecidable manual S 174 0.4263 95 0.52 83
IV.LNSS.HNE. 2020-10-18T00:31:22.92 0.3 undecidable manual S 194 0.3408 96 0.16 69
IV.SMA1.EHZ. 2020-10-18T00:31:22.31 0.1 undecidable manual S 156 0.3301 97 -0.12 94
IV.GAVE.HNZ. 2020-10-18T00:31:21.68 0.3 undecidable manual S 219 0.3076 97 -0.11 71
IV.ATCC.EHZ. 2020-10-18T00:31:20.16 3.0 positive manual Pg 2.49 0
IV.SAP2.EHZ. 2020-10-18T00:31:19.85 3.0 undecidable manual Pg 3.72 0
IV.TERO.HHZ. 2020-10-18T00:31:19.26 0.3 undecidable manual P 133 0.4515 94 -0.07 70
IV.EL6.EHZ. 2020-10-18T00:31:19.40 3.0 positive manual Pg 0.34 0
IV.MNTT.EHZ. 2020-10-18T00:31:18.22 3.0 positive manual Pg 2.16 0
IV.SNTG.HHZ. 2020-10-18T00:31:18.14 3.0 undecidable manual Pn 0.01 0
IV.ASSB.HHZ. 2020-10-18T00:31:18.28 3.0 undecidable manual Pg 2.51 0
IV.RM33.HNZ. 2020-10-18T00:31:18.73 0.1 undecidable manual P 174 0.4263 95 -0.16 92
IV.SMA1.EHZ. 2020-10-18T00:31:17.13 0.1 undecidable manual P 156 0.3301 97 -0.12 94
IV.CSP1.EHZ. 2020-10-18T00:31:17.81 0.1 undecidable manual S 13 0.1628 112 0.21 95
IV.LNSS.HNE. 2020-10-18T00:31:17.30 0.3 undecidable manual P 194 0.3408 96 -0.14 70
IV.GAVE.HNZ. 2020-10-18T00:31:16.42 0.3 undecidable manual P 219 0.3076 97 -0.46 66
IT.MTCL.HGE. 2020-10-18T00:31:16.59 0.1 undecidable manual S 298 0.1295 121 -0.14 97
IV.FDMO.HHZ. 2020-10-18T00:31:16.20 0.1 undecidable manual S 334 0.1151 125 -0.16 96
IV.MMO1.EHZ. 2020-10-18T00:31:16.41 0.1 undecidable manual S 105 0.1295 121 -0.31 93
IV.MF5.EHZ. 2020-10-18T00:31:16.10 3.0 undecidable manual Pg 1.31 0
IV.GUMA.HHZ. 2020-10-18T00:31:15.25 3.0 negative manual Pn -0.34 0
IV.CESI.HHZ. 2020-10-18T00:31:15.18 3.0 positive manual Pg 0.37 0
IV.FEMA.HNE. 2020-10-18T00:31:15.66 0.1 undecidable manual S 291 0.0827 138 0.01 100
IV.CSP1.EHZ. 2020-10-18T00:31:14.68 0.1 negative manual P 13 0.1628 112 0.22 94
IV.MC2.EHZ. 2020-10-18T00:31:14.89 0.1 undecidable manual S 132 0.0324 162 0 100
IT.MTCL.HGE. 2020-10-18T00:31:14.04 0.1 undecidable manual P 298 0.1295 121 0.09 98
IV.NRCA.HHZ. 2020-10-18T00:31:13.40 3.0 undecidable manual Pg 1.01 0
IV.FEMA.HNE. 2020-10-18T00:31:13.48 0.1 undecidable manual P 291 0.0827 138 0.15 98
IV.FDMO.HHZ. 2020-10-18T00:31:13.83 0.1 undecidable manual P 334 0.1151 125 0.09 98
IV.MC2.EHZ. 2020-10-18T00:31:13.04 0.1 undecidable manual P 132 0.0324 162 0.14 99
IV.MMO1.EHZ. 2020-10-18T00:31:13.90 0.1 undecidable manual P 105 0.1295 121 -0.05 99
IV.SRES.HHZ. 2020-10-18T00:31:12.09 3.0 undecidable manual Sn -5.72 0
IV.LAV9.HHZ. 2020-10-18T00:31:02.79 3.0 negative manual Pn 0.17 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.5 0.0003085 0.16 AML other m 2020-10-18T00:31:15.62
IV.NRCA.HHN. ML:1.4 0.000263 0.08 AML other m 2020-10-18T00:31:16.37
IV.FDMO.HHN. ML:1.1 0.0001255 0.16 AML other m 2020-10-18T00:31:16.60
IV.FDMO.HHE. ML:1 8.325E-5 0.16 AML other m 2020-10-18T00:31:16.44
IV.CESI.HHE. ML:1 5.455E-5 0.42 AML other m 2020-10-18T00:31:19.32
IV.CESI.HHN. ML:1.2 8.81E-5 0.5 AML other m 2020-10-18T00:31:19.12
IV.SAP2.EHN. ML:2 0.000483 0.46 AML other m 2020-10-18T00:31:21.40
IV.SAP2.EHE. ML:1.2 8.36E-5 0.48 AML other m 2020-10-18T00:31:21.24
IV.ASSB.HHN. ML:0.8 1.78E-5 0.54 AML other m 2020-10-18T00:31:24.75
IV.ASSB.HHE. ML:0.8 2.07E-5 0.52 AML other m 2020-10-18T00:31:24.90
IV.MNTT.EHN. ML:1.6 0.0001269 0.84 AML other m 2020-10-18T00:31:25.17
IV.MNTT.EHE. ML:1.5 0.00010875 0.84 AML other m 2020-10-18T00:31:25.18
IV.CSP1.EHE. ML:1.5 0.0002102487 0.22 AML other m 2020-10-18T00:31:18.00
IV.CSP1.EHN. ML:1.3 0.000140164818 0.12 AML other m 2020-10-18T00:31:17.87
IV.GUMA.HHE. ML:0.9 5.0197445E-5 0.26 AML other m 2020-10-18T00:31:19.04
IV.GUMA.HHN. ML:1.1 8.4172925E-5 0.58 AML other m 2020-10-18T00:31:19.49
IV.SNTG.HHE. ML:0.5 8.385352E-6 0.18 AML other m 2020-10-18T00:31:24.18
IV.SNTG.HHN. ML:0.5 1.0010663E-5 1.08 AML other m 2020-10-18T00:31:23.91
IV.RM33.EHE. ML:0.6 1.15301675E-5 0.16 AML other m 2020-10-18T00:31:26.11
IV.RM33.EHN. ML:0.9 2.162992E-5 0.4 AML other m 2020-10-18T00:31:26.39
IV.TERO.HHE. ML:0.8 1.47927735E-5 0.06 AML other m 2020-10-18T00:31:26.85
IV.TERO.HHN. ML:0.6 8.858733E-6 0.1 AML other m 2020-10-18T00:31:26.27
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download