Earthquake with magnitude of ML 0.9 on date 28-09-2020 and time 19:34:28 (UTC) in region 3 km SE Fiordimonte (MC)

A magnitude ML 0.9 earthquake occured in region: 3 km SE Fiordimonte (MC), on

  • 28-09-2020 19:34:28 (UTC)
  • 28-09-2020 21:34:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.01, 13.1 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
Fiordimonte MC 3 202 202
Fiastra MC 5 559 761
Pieve Torina MC 6 1458 2219
Pievebovigliana MC 6 866 3085
Acquacanina MC 6 121 3206
Ussita MC 8 444 3650
Monte Cavallo MC 8 145 3795
Visso MC 9 1107 4902
Muccia MC 9 915 5817
Bolognola MC 10 142 5959
Castelsantangelo sul Nera MC 14 281 6240
Serravalle di Chienti MC 14 1070 7310
Camerino MC 14 6974 14284
Preci PG 15 724 15008
Sarnano MC 17 3264 18272
Cessapalombo MC 17 512 18784
Caldarola MC 18 1823 20607
Camporotondo di Fiastrone MC 19 563 21170
Sellano PG 20 1079 22249
Sefro MC 20 422 22671
Serrapetrona MC 20 966 23637

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
59 Km E of Perugia (166134 inhabitants)
62 Km NE of Terni (111501 inhabitants)
63 Km NW of Teramo (54892 inhabitants)
76 Km SW of Ancona (100861 inhabitants)
77 Km NW of L'Aquila (69753 inhabitants)
93 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 0.9 2020-09-28
19:34:28
43.01 13.1 9 2020-09-28
21:39:30
Sala Sismica INGV-Roma 83343971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-28 19:34:28 ± 0.07
Latitude 43.01 ± 0.00
Longitude 13.10 ± 0.00
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83343971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 394
Semi-minor axis of confidence ellipse (meter) 280
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 41
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) 121
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.02788
Epicentral distance of station farthest from the epicenter (degree) 0.37951
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:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 83343971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-28 21:39:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2020-09-28T19:34:36.45 0.3 negative manual P 298 0.3795 50 0.14 69
IV.MMO1.HNZ. 2020-09-28T19:34:36.19 0.3 undecidable manual S 124 0.1988 112 -0.22 70
IV.ASSB.HHZ. 2020-09-28T19:34:35.04 0.6 undecidable manual P 276 0.3256 50 -0.34 44
IV.CESI.HHZ. 2020-09-28T19:34:34.57 0.6 undecidable manual S 268 0.1448 120 0.04 49
IV.MML1.HNZ. 2020-09-28T19:34:34.34 0.3 undecidable manual S 317 0.1403 120 -0.05 73
IV.MC2.EHZ. 2020-09-28T19:34:33.82 0.3 undecidable manual S 147 0.1178 125 0.16 72
IV.CSP1.EHZ. 2020-09-28T19:34:33.55 0.6 undecidable manual S 43 0.1106 126 0.1 49
IV.MMO1.HNZ. 2020-09-28T19:34:32.78 0.1 undecidable manual P 124 0.1988 112 -0.13 95
IV.CSP1.EHZ. 2020-09-28T19:34:31.36 0.3 positive manual P 43 0.1106 126 0.16 72
IV.MML1.HNZ. 2020-09-28T19:34:31.77 0.1 undecidable manual P 317 0.1403 120 0.02 98
IV.CESI.HHZ. 2020-09-28T19:34:31.90 0.3 positive manual P 268 0.1448 120 0.07 73
IV.MC2.EHZ. 2020-09-28T19:34:31.48 0.1 undecidable manual P 147 0.1178 125 0.15 96
IV.FDMO.HHZ. 2020-09-28T19:34:31.23 0.6 undecidable manual S 338 0.0279 161 -0.25 48
IV.FDMO.HHZ. 2020-09-28T19:34:30.03 0.1 undecidable manual P 338 0.0279 161 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.1 0.0001965 0.2 AML other m 2020-09-28T19:34:31.40
IV.FDMO.HHE. ML:1 0.000165 0.4 AML other m 2020-09-28T19:34:31.32
IV.ASSB.HHE. ML:0 3.95E-5 1.24 AML other m 2020-09-28T19:34:38.16
IV.ASSB.HHN. ML:0 6.4E-5 0.3 AML other m 2020-09-28T19:34:38.30
IV.CSP1.EHE. ML:0.9 8.5865045E-5 0.128 AML other m 2020-09-28T19:34:34.14
IV.CSP1.EHN. ML:1 0.00010274155 0.2432 AML other m 2020-09-28T19:34:34.04
IV.CESI.HHE. ML:0.3 2.13593365E-5 0.6784 AML other m 2020-09-28T19:34:35.03
IV.CESI.HHN. ML:0.5 2.967021E-5 0.2432 AML other m 2020-09-28T19:34:34.60
IV.ATCC.EHE. ML:1.1 4.684374E-5 0.1152 AML other m 2020-09-28T19:34:39.69
IV.ATCC.EHN. ML:1 3.1467925E-5 1.5744 AML other m 2020-09-28T19:34:39.71
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