Earthquake with magnitude of ML 0.6 on date 23-11-2021 and time 00:05:40 (Italy) in region Visso (MC)

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

  • 22-11-2021 23:05:40 (UTC)
  • 23-11-2021 00:05:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.932, 13.092 at 12 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 0 1107 1107
Ussita MC 4 444 1551
Castelsantangelo sul Nera MC 7 281 1832
Preci PG 7 724 2556
Monte Cavallo MC 10 145 2701
Fiordimonte MC 12 202 2903
Fiastra MC 13 559 3462
Acquacanina MC 13 121 3583
Pieve Torina MC 13 1458 5041
Bolognola MC 13 142 5183
Sellano PG 14 1079 6262
Pievebovigliana MC 15 866 7128
Norcia PG 16 4957 12085
Muccia MC 17 915 13000
Cerreto di Spoleto PG 19 1075 14075
Serravalle di Chienti MC 19 1070 15145
Montemonaco AP 20 604 15749

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Foligno (57155 inhabitants)
55 Km NE of Terni (111501 inhabitants)
59 Km NW of Teramo (54892 inhabitants)
60 Km E of Perugia (166134 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
98 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 2021-11-22
23:05:40
42.9323 13.0925 12 2021-11-22
23:09:52
Sala Sismica INGV-Roma 97703071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-22 23:05:40 ± 0.08
Latitude 42.9323 ± 0.0036
Longitude 13.0925 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97703071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 373
Semi-minor axis of confidence ellipse (meter) 135
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 357
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.17897
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 97703071
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-22 23:09:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SRES.HHZ. 2021-11-22T23:05:49.50 3.0 undecidable manual P 0.34 0
IV.MMO1.EHZ. 2021-11-22T23:05:48.40 0.1 undecidable manual S 101 0.1745 100 -0.13 97
IV.CESI.HHZ. 2021-11-22T23:05:47.97 0.3 undecidable manual S 298 0.1556 103 0 75
IV.FDMO.HHZ. 2021-11-22T23:05:46.35 0.3 undecidable manual S 358 0.1043 121 -0.21 72
IV.NRCA.HNZ. 2021-11-22T23:05:46.32 0.1 undecidable manual S 171 0.0998 123 -0.14 100
IV.CSP1.EHZ. 2021-11-22T23:05:45.48 0.6 negative manual P 27 0.179 99 0.1 50
IV.CESI.HHZ. 2021-11-22T23:05:45.17 1.0 negative manual P 298 0.1556 103 0.2 24
IV.MC2.EHZ. 2021-11-22T23:05:45.94 0.3 undecidable manual S 107 0.0737 136 0.08 75
IV.MMO1.EHZ. 2021-11-22T23:05:45.34 0.6 positive manual P 101 0.1745 100 0.05 50
IV.FDMO.HHZ. 2021-11-22T23:05:44.25 0.6 negative manual P 358 0.1043 121 0.09 50
IV.NRCA.HNZ. 2021-11-22T23:05:44.18 0.1 undecidable manual P 171 0.0998 123 0.08 100
IV.MC2.EHZ. 2021-11-22T23:05:43.99 0.6 undecidable manual P 107 0.0737 136 0.24 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MC2.EHE. ML:0.6 5.20638E-5 0.1408 AML other m 2021-11-22T23:05:46.08
IV.MC2.EHN. ML:0.8 7.2898795E-5 0.1024 AML other m 2021-11-22T23:05:46.29
IV.FDMO.HHE. ML:0.5 3.3760215E-5 0.128 AML other m 2021-11-22T23:05:46.72
IV.FDMO.HHN. ML:0.4 2.2954005E-5 0.128 AML other m 2021-11-22T23:05:46.72
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