Earthquake with magnitude of ML 1.6 on date 27-11-2021 and time 07:46:42 (UTC) in region 1 km NE Visso (MC)

A magnitude ML 1.6 earthquake occured in region: 1 km NE Visso (MC), on

  • 27-11-2021 07:46:42 (UTC)
  • 27-11-2021 08:46:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.939, 13.098 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
Visso MC 1 1107 1107
Ussita MC 4 444 1551
Castelsantangelo sul Nera MC 7 281 1832
Preci PG 8 724 2556
Monte Cavallo MC 10 145 2701
Fiordimonte MC 11 202 2903
Fiastra MC 12 559 3462
Acquacanina MC 12 121 3583
Bolognola MC 12 142 3725
Pieve Torina MC 12 1458 5183
Pievebovigliana MC 14 866 6049
Sellano PG 15 1079 7128
Norcia PG 16 4957 12085
Muccia MC 17 915 13000
Serravalle di Chienti MC 19 1070 14070
Montemonaco AP 19 604 14674
Cerreto di Spoleto PG 20 1075 15749
Sarnano MC 20 3264 19013
Montefortino FM 20 1178 20191

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Foligno (57155 inhabitants)
56 Km NE of Terni (111501 inhabitants)
59 Km NW of Teramo (54892 inhabitants)
61 Km E of Perugia (166134 inhabitants)
70 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
98 Km W of Montesilvano (53738 inhabitants)
100 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 1.6 2021-11-27
07:46:42
42.9387 13.0978 9 2021-11-27
07:57:23
Sala Sismica INGV-Roma 97864311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-27 07:46:42 ± 0.08
Latitude 42.9387 ± 0.0045
Longitude 13.0978 ± 0.0049
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 97864311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 471
Semi-minor axis of confidence ellipse (meter) 325
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 222
Circular confidence region, given by single value of horizontal uncertainty (meter) 470
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.84356
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.4
Num. used stations 14
Type of magnitude ML
Reference to an origin 97864311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-27 07:57:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.BLLA.EHZ. 2021-11-27T07:46:59.68 3.0 undecidable manual S -7.74 0
IV.MF5.EHZ. 2021-11-27T07:46:53.35 0.1 undecidable manual S 79 0.2689 50 0.19 94
IV.CSP1.EHZ. 2021-11-27T07:46:49.61 0.6 undecidable manual S 27 0.1718 116 -0.13 49
IV.CESI.HHZ. 2021-11-27T07:46:49.15 0.1 undecidable manual S 295 0.1556 119 -0.04 99
IV.MMO1.EHZ. 2021-11-27T07:46:49.38 0.6 undecidable manual S 103 0.1718 116 -0.37 46
IV.MF5.EHZ. 2021-11-27T07:46:48.59 0.1 undecidable manual P 79 0.2689 50 0 98
IV.FDMO.HHZ. 2021-11-27T07:46:47.48 0.6 undecidable manual S 356 0.098 131 0.13 49
IV.NRCA.HNZ. 2021-11-27T07:46:47.52 0.6 undecidable manual S 173 0.1061 129 -0.06 50
IV.MC2.EHZ. 2021-11-27T07:46:47.12 0.6 undecidable manual S 112 0.0719 140 0.48 46
IT.MTCL.HGZ. 2021-11-27T07:46:47.25 0.1 undecidable manual S 308 0.0908 133 0.11 99
IV.CESI.HHZ. 2021-11-27T07:46:46.19 0.1 undecidable manual P 295 0.1556 119 -0.12 98
IV.MMO1.EHZ. 2021-11-27T07:46:46.35 0.1 positive manual P 103 0.1718 116 -0.27 94
IV.CSP1.EHZ. 2021-11-27T07:46:46.34 0.6 undecidable manual P 27 0.1718 116 -0.28 47
IV.MC2.EHZ. 2021-11-27T07:46:45.04 0.1 undecidable manual P 112 0.0719 140 0.21 97
IT.MTCL.HGZ. 2021-11-27T07:46:45.17 0.1 undecidable manual P 308 0.0908 133 0.05 100
IV.FDMO.HHZ. 2021-11-27T07:46:45.21 1.0 undecidable manual P 356 0.098 131 -0.03 25
IV.NRCA.HNZ. 2021-11-27T07:46:45.33 0.6 negative manual P 173 0.1061 129 -0.04 50
IV.BADI.EHZ. 2021-11-27T07:46:41.93 0.1 undecidable manual P 0.8436 -9.99 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IT.MTCL.HGN. ML:3.7 0.0616 0.08 AML other m 2021-11-27T07:46:47.30
IV.FDMO.HHE. ML:1.5 0.0004095 0.16 AML other m 2021-11-27T07:46:47.61
IT.MTCL.HGE. ML:3.6 0.0539 0.56 AML other m 2021-11-27T07:46:47.30
IV.NRCA.HHE. ML:1.7 0.0006775 0.96 AML other m 2021-11-27T07:46:47.21
IV.NRCA.HNE. ML:1.7 0.000662 0.96 AML other m 2021-11-27T07:46:47.22
IV.FDMO.HHN. ML:1.3 0.000274 0.38 AML other m 2021-11-27T07:46:47.96
IV.NRCA.HNN. ML:1.7 0.000624 0.62 AML other m 2021-11-27T07:46:49.11
IV.NRCA.HHN. ML:1.7 0.000608 0.62 AML other m 2021-11-27T07:46:49.42
IV.CESI.HHE. ML:1.3 0.0001775 0.22 AML other m 2021-11-27T07:46:49.26
IV.CESI.HHN. ML:1.3 0.000169 0.26 AML other m 2021-11-27T07:46:49.40
IV.MMO1.EHN. ML:1.5 0.0002265 1.02 AML other m 2021-11-27T07:46:49.97
IV.MMO1.EHE. ML:1.3 0.000171 1.08 AML other m 2021-11-27T07:46:49.28
IV.CSP1.EHN. ML:1.5 0.000253 0.72 AML other m 2021-11-27T07:46:49.82
IV.CSP1.EHE. ML:1.4 0.000219 0.42 AML other m 2021-11-27T07:46:51.58
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