Earthquake with magnitude of ML 1.0 on date 18-09-2020 and time 08:57:15 (Italy) in region 3 km E Monte Cavallo (MC)

A magnitude ML 1.0 earthquake occured in region: 3 km E Monte Cavallo (MC), on

  • 18-09-2020 06:57:15 (UTC)
  • 18-09-2020 08:57:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43, 13.04 at 11 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
Monte Cavallo MC 3 145 145
Pieve Torina MC 6 1458 1603
Fiordimonte MC 6 202 1805
Visso MC 8 1107 2912
Pievebovigliana MC 8 866 3778
Muccia MC 10 915 4693
Ussita MC 10 444 5137
Fiastra MC 10 559 5696
Serravalle di Chienti MC 11 1070 6766
Acquacanina MC 12 121 6887
Preci PG 13 724 7611
Castelsantangelo sul Nera MC 14 281 7892
Sellano PG 15 1079 8971
Bolognola MC 15 142 9113
Camerino MC 16 6974 16087
Sefro MC 18 422 16509

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Foligno (57155 inhabitants)
55 Km E of Perugia (166134 inhabitants)
58 Km NE of Terni (111501 inhabitants)
66 Km NW of Teramo (54892 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
79 Km SW of Ancona (100861 inhabitants)
94 Km S of Fano (60888 inhabitants)
100 Km NE of Viterbo (67173 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 1.0 2020-09-18
06:57:15
43 13.04 11 2020-09-18
07:02:45
Sala Sismica INGV-Roma 82999971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-18 06:57:15 ± 0.06
Latitude 43.00 ± 0.00
Longitude 13.04 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82999971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 314
Semi-minor axis of confidence ellipse (meter) 289
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 72
Circular confidence region, given by single value of horizontal uncertainty (meter) 310
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.16997
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 82999971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-18 07:02:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2020-09-18T06:57:26.73 0.3 undecidable manual S -0.11 1.08
IV.EL6.EHZ. 2020-09-18T06:57:23.11 0.6 positive manual P 0.01 0.72
IV.NRCA.HHZ. 2020-09-18T06:57:23.13 0.6 undecidable manual S 162 0.17 91 -0.28 47
IV.MC2.EHZ. 2020-09-18T06:57:22.56 0.6 undecidable manual S 128 0.1358 94 0.16 48
IV.CSP1.EHZ. 2020-09-18T06:57:22.80 0.6 undecidable manual S 51 0.1529 92 -0.08 49
IV.CESI.HHZ. 2020-09-18T06:57:21.45 0.6 undecidable manual S 275 0.1016 114 0.05 49
IV.MMO1.EHZ. 2020-09-18T06:57:21.21 0.3 undecidable manual P -0.03 1.08
IV.MML1.HNE. 2020-09-18T06:57:21.98 0.6 undecidable manual S 336 0.1286 96 -0.2 48
IV.CSP1.EHZ. 2020-09-18T06:57:20.08 0.6 undecidable manual P 51 0.1529 92 0.14 48
IV.FDMO.HHZ. 2020-09-18T06:57:20.20 0.6 undecidable manual S 39 0.0522 144 -0.08 49
IV.NRCA.HHZ. 2020-09-18T06:57:20.08 0.3 undecidable manual P 162 0.17 91 -0.16 72
IV.FEMA.HNZ. 2020-09-18T06:57:19.96 0.6 undecidable manual S 171 0.0342 156 -0.04 50
IV.MML1.HNE. 2020-09-18T06:57:19.53 0.1 undecidable manual P 336 0.1286 96 0 100
IV.CESI.HHZ. 2020-09-18T06:57:19.17 0.3 negative manual P 275 0.1016 114 0.09 73
IT.MTCL.HGZ. 2020-09-18T06:57:19.66 1.0 undecidable manual S 267 0.0315 157 -0.31 24
IV.MC2.EHZ. 2020-09-18T06:57:19.67 1.0 undecidable manual P 128 0.1358 94 0.01 25
IV.FDMO.HHZ. 2020-09-18T06:57:18.50 0.1 undecidable manual P 39 0.0522 144 0.07 100
IV.FEMA.HNZ. 2020-09-18T06:57:18.42 0.1 undecidable manual P 171 0.0342 156 0.15 98
IT.MTCL.HGZ. 2020-09-18T06:57:18.27 0.6 positive manual P 267 0.0315 157 0.01 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHE. ML:0.8 2.832624E-5 0.3808 AML other m 2020-09-18T06:57:27.09
IV.ASSB.HHN. ML:1 4.5752615E-5 2.6016 AML other m 2020-09-18T06:57:26.94
IV.FDMO.HHE. ML:1 0.0001326595 0.1216 AML other m 2020-09-18T06:57:20.31
IV.FDMO.HHN. ML:1.1 0.0001843914 0.16 AML other m 2020-09-18T06:57:20.31
IV.CESI.HHE. ML:0.9 8.2276525E-5 0.24 AML other m 2020-09-18T06:57:21.38
IV.CESI.HHN. ML:1 9.7917755E-5 0.1408 AML other m 2020-09-18T06:57:21.53
IV.CSP1.EHE. ML:1 7.595619E-5 0.1792 AML other m 2020-09-18T06:57:23.48
IV.CSP1.EHN. ML:0.9 6.6930495E-5 0.16 AML other m 2020-09-18T06:57:23.62
IV.NRCA.HHE. ML:1.2 0.00011661825 0.1216 AML other m 2020-09-18T06:57:24.26
IV.NRCA.HHN. ML:1.3 0.000148576 0.1216 AML other m 2020-09-18T06:57:23.72
IV.NRCA.HNE. ML:1.1 0.00010448003 0.112 AML other m 2020-09-18T06:57:24.32
IV.NRCA.HNN. ML:1.5 0.00023754755 1.328 AML other m 2020-09-18T06:57:25.54
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