Earthquake with magnitude of ML 0.6 on date 04-09-2021 and time 02:05:00 (Italy) in region 2 km SE Visso (MC)

A magnitude ML 0.6 earthquake occured in region: 2 km SE Visso (MC), on

  • 04-09-2021 00:05:00 (UTC)
  • 04-09-2021 02:05:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.919, 13.111 at 13 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 2 1107 1107
Ussita MC 4 444 1551
Castelsantangelo sul Nera MC 4 281 1832
Preci PG 7 724 2556
Monte Cavallo MC 12 145 2701
Bolognola MC 13 142 2843
Fiordimonte MC 13 202 3045
Acquacanina MC 14 121 3166
Fiastra MC 14 559 3725
Norcia PG 14 4957 8682
Pieve Torina MC 15 1458 10140
Sellano PG 15 1079 11219
Pievebovigliana MC 16 866 12085
Montemonaco AP 18 604 12689
Montefortino FM 19 1178 13867
Muccia MC 19 915 14782
Cerreto di Spoleto PG 19 1075 15857
Montegallo AP 20 523 16380

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
55 Km NE of Terni (111501 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
62 Km E of Perugia (166134 inhabitants)
67 Km NW of L'Aquila (69753 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
96 Km W of Montesilvano (53738 inhabitants)
99 Km NE of Viterbo (67173 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web questionnaire

This map shows the distribution of earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.6 2021-09-04
00:05:00
42.9187 13.1113 13 2021-09-04
00:54:45
Sala Sismica INGV-Roma 95012141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-04 00:05:00 ± 0.09
Latitude 42.9187 ± 0.0045
Longitude 13.1113 ± 0.0049
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95012141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 553
Semi-minor axis of confidence ellipse (meter) 259
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 203
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 203
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.05756
Epicentral distance of station farthest from the epicenter (degree) 0.21943
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 95012141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-04 00:54:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-09-04T00:05:08.41 0.1 undecidable manual S 22 0.1862 104 0.05 98
IV.MMO1.EHZ. 2021-09-04T00:05:07.36 0.1 undecidable manual S 97 0.1592 109 -0.23 93
IV.CESI.HHZ. 2021-09-04T00:05:07.95 0.1 undecidable manual S 300 0.1736 106 -0.07 98
IV.FDMO.HHZ. 2021-09-04T00:05:06.35 0.1 undecidable manual S 352 0.1187 121 -0.17 97
IV.CSP1.EHZ. 2021-09-04T00:05:05.04 0.1 undecidable manual P 22 0.1862 104 0.07 97
IV.MML1.EHZ. 2021-09-04T00:05:05.48 0.1 undecidable manual P 332 0.2194 100 -0.05 96
IV.MC2.EHZ. 2021-09-04T00:05:05.23 0.1 undecidable manual S 97 0.0576 147 0.04 100
IV.MMO1.EHZ. 2021-09-04T00:05:04.54 0.1 undecidable manual P 97 0.1592 109 0.02 98
IV.CESI.HHZ. 2021-09-04T00:05:04.82 0.1 undecidable manual P 300 0.1736 106 0.05 97
IV.MC2.EHZ. 2021-09-04T00:05:03.34 0.1 undecidable manual P 97 0.0576 147 0.2 97
IV.FDMO.HHZ. 2021-09-04T00:05:03.96 0.1 undecidable manual P 352 0.1187 121 0.06 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.7 4.545E-5 0.22 AML other m 2021-09-04T00:05:06.50
IV.FDMO.HHE. ML:0.5 2.815E-5 0.14 AML other m 2021-09-04T00:05:06.73
IV.CESI.HHN. ML:0.8 4.715E-5 0.18 AML other m 2021-09-04T00:05:08.30
IV.CESI.HHE. ML:0.6 2.285E-5 0.36 AML other m 2021-09-04T00:05:08.27
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download