Earthquake with magnitude of ML 0.2 on date 25-09-2020 and time 21:56:01 (UTC) in region 3 km N Visso (MC)

A magnitude ML 0.2 earthquake occured in region: 3 km N Visso (MC), on

  • 25-09-2020 21:56:01 (UTC)
  • 25-09-2020 23:56:01 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.96, 13.1 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
Visso MC 3 1107 1107
Ussita MC 4 444 1551
Monte Cavallo MC 9 145 1696
Fiordimonte MC 9 202 1898
Castelsantangelo sul Nera MC 9 281 2179
Fiastra MC 10 559 2738
Acquacanina MC 10 121 2859
Pieve Torina MC 10 1458 4317
Preci PG 10 724 5041
Bolognola MC 11 142 5183
Pievebovigliana MC 11 866 6049
Muccia MC 14 915 6964
Sellano PG 16 1079 8043
Serravalle di Chienti MC 17 1070 9113
Norcia PG 19 4957 14070
Sarnano MC 19 3264 17334
Camerino MC 20 6974 24308

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Foligno (57155 inhabitants)
58 Km NE of Terni (111501 inhabitants)
60 Km E of Perugia (166134 inhabitants)
60 Km NW of Teramo (54892 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
98 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 0.2 2020-09-25
21:56:01
42.96 13.1 11 2020-09-25
22:07:22
Sala Sismica INGV-Roma 83256341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-25 21:56:01 ± 0.06
Latitude 42.96 ± 0.00
Longitude 13.10 ± 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 83256341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 230
Semi-minor axis of confidence ellipse (meter) 21
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 26
Circular confidence region, given by single value of horizontal uncertainty (meter) 230
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 161
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.05
Epicentral distance of station closest to the epicenter (degree) 0.07554
Epicentral distance of station farthest from the epicenter (degree) 0.15288
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.2

Field Value
Value 0.2
Uncertainty 0.4
Num. used stations 5
Type of magnitude ML
Reference to an origin 83256341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-25 22:07:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CESI.HHZ. 2020-09-25T21:56:07.92 0.3 undecidable manual S 287 0.1466 123 0.03 74
IV.MC2.EHZ. 2020-09-25T21:56:06.04 0.1 undecidable manual S 126 0.0836 139 0 100
IV.CESI.HHZ. 2020-09-25T21:56:05.03 0.1 undecidable manual P 287 0.1466 123 -0.01 99
IV.FDMO.HHZ. 2020-09-25T21:56:05.87 0.3 undecidable manual S 355 0.0755 141 0.03 75
IV.CSP1.EHZ. 2020-09-25T21:56:05.10 0.3 negative manual P 31 0.1529 122 -0.05 73
IT.MTCL.HGE. 2020-09-25T21:56:05.82 0.3 undecidable manual S 295 0.0782 141 -0.07 74
IV.MC2.EHZ. 2020-09-25T21:56:03.98 0.6 undecidable manual P 126 0.0836 139 0.01 50
IT.MTCL.HGE. 2020-09-25T21:56:03.92 0.1 undecidable manual P 295 0.0782 141 0.04 100
IV.FDMO.HHZ. 2020-09-25T21:56:03.98 1.0 negative manual P 355 0.0755 141 0.12 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HHN. ML:1.6 8.5098315E-5 0.9984 AML other m 2020-09-25T21:56:30.14
IV.FDMO.HHE. ML:0 1.53586145E-5 0.1408 AML other m 2020-09-25T21:56:06.32
IV.FDMO.HHN. ML:0.2 2.2295285E-5 0.1792 AML other m 2020-09-25T21:56:06.11
IV.CESI.HHE. ML:0.2 1.416326845E-5 0.1024 AML other m 2020-09-25T21:56:08.38
IV.CESI.HHN. ML:0.1 7.939915E-6 0.1024 AML other m 2020-09-25T21:56:08.26
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