Earthquake with magnitude of ML 0.7 on date 20-09-2020 and time 18:35:57 (Italy) in region 8 km W Monte Cavallo (MC)

A magnitude ML 0.7 earthquake occured in region: 8 km W Monte Cavallo (MC), on

  • 20-09-2020 16:35:57 (UTC)
  • 20-09-2020 18:35:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.97, 12.91 at 9 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 8 145 145
Sellano PG 9 1079 1224
Serravalle di Chienti MC 12 1070 2294
Pieve Torina MC 14 1458 3752
Preci PG 15 724 4476
Visso MC 15 1107 5583
Valtopina PG 16 1398 6981
Fiordimonte MC 16 202 7183
Muccia MC 16 915 8098
Foligno PG 17 57155 65253
Trevi PG 17 8469 73722
Cerreto di Spoleto PG 17 1075 74797
Pievebovigliana MC 17 866 75663
Nocera Umbra PG 18 5839 81502
Ussita MC 19 444 81946
Spello PG 20 8645 90591
Sefro MC 20 422 91013

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
51 Km NE of Terni (111501 inhabitants)
74 Km W of Teramo (54892 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
87 Km SW of Ancona (100861 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
97 Km S of Fano (60888 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 0.7 2020-09-20
16:35:57
42.97 12.91 9 2020-09-20
16:47:47
Sala Sismica INGV-Roma 83070831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-20 16:35:57 ± 0.05
Latitude 42.97 ± 0.00
Longitude 12.91 ± 0.00
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83070831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 336
Semi-minor axis of confidence ellipse (meter) 203
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 149
Circular confidence region, given by single value of horizontal uncertainty (meter) 340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.03238
Epicentral distance of station farthest from the epicenter (degree) 0.38221
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 83070831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-20 16:47:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-09-20T16:36:11.40 0.3 undecidable manual S 21 0.3822 50 0.02 72
IV.MOMA.HNZ. 2020-09-20T16:36:09.23 0.3 undecidable manual S 236 0.3013 50 0.25 70
IV.GAVE.EHZ. 2020-09-20T16:36:08.01 0.6 undecidable manual S 183 0.2806 106 -0.26 46
IV.CSP1.EHZ. 2020-09-20T16:36:06.80 0.3 undecidable manual S 61 0.2455 108 -0.16 72
IV.ASSB.HHZ. 2020-09-20T16:36:05.09 0.3 undecidable manual S 291 0.1979 112 -0.14 73
IV.EL6.EHZ. 2020-09-20T16:36:05.06 0.1 undecidable manual P 21 0.3822 50 -0.27 91
IV.MOMA.HNZ. 2020-09-20T16:36:04.02 1.0 undecidable manual P 236 0.3013 50 0.08 24
IV.MML1.HNZ. 2020-09-20T16:36:03.68 0.3 undecidable manual S 17 0.1475 118 0.2 72
IV.FDMO.HHZ. 2020-09-20T16:36:03.35 0.3 undecidable manual S 64 0.1439 119 0.01 75
IV.GAVE.EHZ. 2020-09-20T16:36:03.31 1.0 negative manual P 183 0.2806 106 -0.22 23
IV.CSP1.EHZ. 2020-09-20T16:36:02.59 0.1 undecidable manual P 61 0.2455 108 -0.19 95
IV.FEMA.HNZ. 2020-09-20T16:36:02.15 0.3 undecidable manual S 96 0.1016 127 0.16 74
IV.ASSB.HHZ. 2020-09-20T16:36:01.73 0.1 undecidable manual P 291 0.1979 112 -0.05 99
IV.FEMA.HNZ. 2020-09-20T16:36:00.15 0.3 undecidable manual P 96 0.1016 127 0.25 72
IT.MTCL.HGZ. 2020-09-20T16:36:00.88 0.1 undecidable manual S 72 0.0674 139 -0.15 99
IV.MML1.HNZ. 2020-09-20T16:36:00.93 0.1 undecidable manual P 17 0.1475 118 0.17 97
IV.CESI.HNZ. 2020-09-20T16:36:00.19 0.3 undecidable manual S 351 0.0324 157 -0.12 75
IV.FDMO.HHZ. 2020-09-20T16:36:00.73 0.1 undecidable manual P 64 0.1439 119 0.05 100
IT.MTCL.HGZ. 2020-09-20T16:35:59.48 0.1 undecidable manual P 72 0.0674 139 0.13 99
IV.CESI.HNZ. 2020-09-20T16:35:59.07 0.1 undecidable manual P 351 0.0324 157 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.5 3.037719E-5 0.4096 AML other m 2020-09-20T16:36:03.53
IV.FDMO.HHN. ML:0.5 2.764211E-5 0.2176 AML other m 2020-09-20T16:36:03.41
IV.ASSB.HHN. ML:0.5 2.125919E-5 0.1408 AML other m 2020-09-20T16:36:06.48
IV.ASSB.HHE. ML:0.6 2.6603425E-5 0.1152 AML other m 2020-09-20T16:36:05.93
IV.CSP1.EHN. ML:0.9 3.9188175E-5 0.1792 AML other m 2020-09-20T16:36:08.77
IV.CSP1.EHE. ML:0.9 3.9868865E-5 0.128 AML other m 2020-09-20T16:36:07.50
IV.GAVE.EHE. ML:0.6 2.1979443E-5 0.1664 AML other m 2020-09-20T16:36:11.15
IV.GAVE.EHN. ML:0.5 1.4714245E-5 0.0768 AML other m 2020-09-20T16:36:08.49
IV.EL6.EHE. ML:1.1 4.3502145E-5 0.1792 AML other m 2020-09-20T16:36:12.26
IV.EL6.EHN. ML:1 3.535514355E-5 0.1792 AML other m 2020-09-20T16:36:12.42
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