Earthquake with magnitude of ML 0.8 on date 28-09-2020 and time 18:46:02 (Italy) in region 3 km SW Fiastra (MC)

A magnitude ML 0.8 earthquake occured in region: 3 km SW Fiastra (MC), on

  • 28-09-2020 16:46:02 (UTC)
  • 28-09-2020 18:46:02 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.01, 13.14 at 8 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
Fiastra MC 3 559 559
Acquacanina MC 4 121 680
Fiordimonte MC 5 202 882
Pievebovigliana MC 7 866 1748
Bolognola MC 8 142 1890
Ussita MC 8 444 2334
Pieve Torina MC 8 1458 3792
Visso MC 10 1107 4899
Muccia MC 11 915 5814
Monte Cavallo MC 11 145 5959
Castelsantangelo sul Nera MC 13 281 6240
Sarnano MC 14 3264 9504
Cessapalombo MC 15 512 10016
Camerino MC 15 6974 16990
Caldarola MC 16 1823 18813
Serravalle di Chienti MC 17 1070 19883
Camporotondo di Fiastrone MC 17 563 20446
Preci PG 17 724 21170
Gualdo MC 17 815 21985
San Ginesio MC 18 3498 25483
Amandola FM 18 3629 29112
Montefortino FM 18 1178 30290
Belforte del Chienti MC 19 1886 32176
Serrapetrona MC 19 966 33142
Montemonaco AP 20 604 33746

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
61 Km NW of Teramo (54892 inhabitants)
62 Km E of Perugia (166134 inhabitants)
64 Km NE of Terni (111501 inhabitants)
74 Km SW of Ancona (100861 inhabitants)
77 Km N of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 inhabitants)
99 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 0.8 2020-09-28
16:46:02
43.01 13.14 8 2020-09-28
17:03:07
Sala Sismica INGV-Roma 83339091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-28 16:46:02 ± 0.08
Latitude 43.01 ± 0.00
Longitude 13.14 ± 0.00
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83339091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 386
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 87
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 18
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) 0.31656
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 83339091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-28 17:03:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CMPR.HHZ. 2020-09-28T16:47:45.27 3.0 undecidable manual Sg 12.38 0
XK.GIZZ.HHZ. 2020-09-28T16:47:30.48 3.0 undecidable manual Pg 22.73 0
IV.PAOL.HHZ. 2020-09-28T16:47:29.42 3.0 undecidable manual Sg 18.559999 0
X3.T1582.EHZ. 2020-09-28T16:47:15.49 3.0 positive manual Pn 2.59 0
IV.CAR1.HNZ. 2020-09-28T16:47:03.28 3.0 undecidable manual Pn -1.31 0
IV.CET2.HHZ. 2020-09-28T16:46:57.50 3.0 undecidable manual Pn -2.43 0
IV.CADC.HNZ. 2020-09-28T16:46:56.08 3.0 undecidable manual Sn 2.26 0
IV.CRND.HNZ. 2020-09-28T16:46:49.88 3.0 undecidable manual Sn 0.1 0
IV.PAOL.HHZ. 2020-09-28T16:46:37.09 3.0 undecidable manual Pn 2.37 0
MN.TRI.HHZ. 2020-09-28T16:46:20.90 3.0 positive manual Pn -3.63 0
IV.SACS.HHZ. 2020-09-28T16:46:15.03 3.0 undecidable manual S -0.51 0
IV.EL6.EHZ. 2020-09-28T16:46:14.71 0.3 undecidable manual S 355 0.3166 50 0.05 73
IV.MMO1.EHZ. 2020-09-28T16:46:09.63 0.3 undecidable manual S 130 0.179 113 -0.05 75
IV.MML1.EHZ. 2020-09-28T16:46:09.13 1.0 undecidable manual S 309 0.1574 115 0.18 24
IV.CESI.HHZ. 2020-09-28T16:46:09.88 0.3 undecidable manual S 267 0.1718 114 0.44 69
IV.EL6.EHZ. 2020-09-28T16:46:09.17 0.3 undecidable manual P 355 0.3166 50 -0.23 70
IV.CRTC.HHZ. 2020-09-28T16:46:08.90 3.0 undecidable manual S 0.98 0
IV.MC2.EHZ. 2020-09-28T16:46:07.67 0.3 undecidable manual S 160 0.1088 125 0.37 71
IV.SEI.HHZ. 2020-09-28T16:46:06.58 3.0 undecidable manual Pg 3.16 0
IV.MMO1.EHZ. 2020-09-28T16:46:06.54 0.3 undecidable manual P 130 0.179 113 0.01 75
IV.MML1.EHZ. 2020-09-28T16:46:06.10 0.6 undecidable manual P 309 0.1574 115 0 51
IV.CSP1.EHZ. 2020-09-28T16:46:06.80 0.3 undecidable manual S 32 0.0917 129 0.02 77
IV.BARO.EHZ. 2020-09-28T16:46:06.51 3.0 undecidable manual Pn -4.73 0
IV.FEMA.HNE. 2020-09-28T16:46:06.51 0.3 undecidable manual S 232 0.0836 132 -0.03 77
IV.CESI.HHZ. 2020-09-28T16:46:06.56 0.3 undecidable manual P 267 0.1718 114 0.17 73
IV.NRCA.HNE. 2020-09-28T16:46:06.29 0.1 undecidable manual P 186 0.1808 113 -0.28 95
IV.MC2.EHZ. 2020-09-28T16:46:05.22 0.3 undecidable manual P 160 0.1088 125 0.07 76
IV.FDMO.HHZ. 2020-09-28T16:46:05.22 0.3 undecidable manual S 301 0.0441 150 -0.36 72
IV.PF6.EHN. 2020-09-28T16:46:05.65 0.1 undecidable manual P 18 0.1304 120 0.09 100
IV.CSP1.EHZ. 2020-09-28T16:46:05.04 0.1 undecidable manual P 32 0.0917 129 0.19 99
IV.FEMA.HNE. 2020-09-28T16:46:04.50 0.1 undecidable manual P 232 0.0836 132 -0.21 98
IV.FIR.HHZ. 2020-09-28T16:46:03.71 3.0 undecidable manual P 0.8 0
IV.FDMO.HHZ. 2020-09-28T16:46:03.93 0.3 undecidable manual P 301 0.0441 150 -0.23 74
IV.RINC.HHZ. 2020-09-28T16:45:59.70 3.0 negative manual P -0.65 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0 0.000191 1.04 AML other m 2020-09-28T16:46:05.86
IV.FDMO.HHN. ML:0 0.000178 0.82 AML other m 2020-09-28T16:46:05.36
IV.CSP1.EHE. ML:1.1 0.0001905006 0.3584 AML other m 2020-09-28T16:46:07.94
IV.CSP1.EHN. ML:1.1 0.0001632013 0.2432 AML other m 2020-09-28T16:46:07.44
IV.CESI.HHE. ML:0.6 3.1129175E-5 0.4864 AML other m 2020-09-28T16:46:10.07
IV.CESI.HHN. ML:0.5 2.6517625E-5 0.1792 AML other m 2020-09-28T16:46:10.12
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