Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 16-11-2021 and time 01:28:23 (Italy) in region 2 km E Visso (MC)

A magnitude ML 1.0 earthquake occured in region: 2 km E Visso (MC), on

  • 16-11-2021 00:28:23 (UTC)
  • 16-11-2021 01:28:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9250, 13.1080 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 3 444 1551
Castelsantangelo sul Nera MC 5 281 1832
Preci PG 8 724 2556
Monte Cavallo MC 12 145 2701
Bolognola MC 13 142 2843
Fiordimonte MC 13 202 3045
Acquacanina MC 13 121 3166
Fiastra MC 13 559 3725
Pieve Torina MC 14 1458 5183
Norcia PG 15 4957 10140
Sellano PG 15 1079 11219
Pievebovigliana MC 16 866 12085
Montemonaco AP 18 604 12689
Muccia MC 18 915 13604
Montefortino FM 19 1178 14782
Cerreto di Spoleto PG 19 1075 15857

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
55 Km NE of Terni (111501 inhabitants)
57 Km NW of Teramo (54892 inhabitants)
62 Km E of Perugia (166134 inhabitants)
68 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
97 Km W of Montesilvano (53738 inhabitants)
99 Km NE of Viterbo (67173 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.0 2021-11-16
00:28:23		 42.9247 13.1077 10 2022-03-30
13:04:16		 Bollettino Sismico Italiano INGV 97493191
Reviewed
Rev100 		ML 1.1 2021-11-16
00:28:23		 42.9252 13.1138 11 2021-11-16
00:33:58		 Sala Sismica INGV-Roma 97486891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-16 00:28:23 ± 0.08
Latitude 42.9247 ± 0.0036
Longitude 13.1077 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 97493191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 397
Semi-minor axis of confidence ellipse (meter) 195
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 199
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.05666
Epicentral distance of station farthest from the epicenter (degree) 0.34894
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 97493191
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-16 14:10:33

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 97486891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-16 00:33:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2021-11-16T00:28:36.27 0.3 undecidable manual S 290 38.7279 50 -0.46 66
IV.SAP2.EHE. 2021-11-16T00:28:35.01 0.3 undecidable manual S 51 30.3474 50 0.5 66
IV.GUMA.HHZ. 2021-11-16T00:28:32.32 0.3 undecidable manual S 50 23.9538 112 -0.28 70
IV.MML1.HNE. 2021-11-16T00:28:32.35 0.3 undecidable manual S 332 23.6541 112 -0.14 72
IV.CSP1.EHZ. 2021-11-16T00:28:31.11 0.3 undecidable manual S 23 20.1687 116 -0.27 71
IV.SAP2.EHE. 2021-11-16T00:28:30.34 0.3 undecidable manual P 51 30.3474 50 0.43 67
IV.MMO1.EHZ. 2021-11-16T00:28:30.25 0.3 undecidable manual S 99 18.0708 118 -0.47 68
IV.CESI.HHZ. 2021-11-16T00:28:30.91 0.3 undecidable manual S 298 18.7701 117 -0.03 75
IV.ASSB.HHZ. 2021-11-16T00:28:30.94 0.1 undecidable manual P 290 38.7279 50 -0.25 92
IV.FDMO.HHZ. 2021-11-16T00:28:29.00 0.3 undecidable manual S 352 12.4764 128 -0.11 74
IV.CSP1.EHZ. 2021-11-16T00:28:28.05 0.1 undecidable manual P 23 20.1687 116 -0.05 99
IV.GUMA.HHZ. 2021-11-16T00:28:28.82 0.1 undecidable manual P 50 23.9538 112 0.02 99
IV.NRCA.HHZ. 2021-11-16T00:28:28.27 0.3 undecidable manual S 177 10.0788 134 -0.2 73
IT.MTCL.HGN. 2021-11-16T00:28:28.91 0.3 undecidable manual S 311 11.6772 130 0.03 76
IV.MML1.HNE. 2021-11-16T00:28:28.68 0.1 undecidable manual P 332 23.6541 112 -0.06 98
IV.MC2.EHZ. 2021-11-16T00:28:27.83 0.3 undecidable manual S 102 6.7932 145 0.12 75
IV.FEMA.HNN. 2021-11-16T00:28:27.82 0.3 undecidable manual S 312 6.2937 147 0.2 74
IV.MMO1.EHZ. 2021-11-16T00:28:27.57 0.1 positive manual P 99 18.0708 118 -0.15 97
IV.CESI.HHZ. 2021-11-16T00:28:27.95 0.1 positive manual P 298 18.7701 117 0.11 98
IT.MTCL.HGN. 2021-11-16T00:28:26.80 0.1 undecidable manual P 311 11.6772 130 0.14 99
IV.MC2.EHZ. 2021-11-16T00:28:26.18 0.1 undecidable manual P 102 6.7932 145 0.2 98
IV.FDMO.HHZ. 2021-11-16T00:28:26.90 0.1 undecidable manual P 352 12.4764 128 0.11 99
IV.FEMA.HNN. 2021-11-16T00:28:26.25 0.1 undecidable manual P 312 6.2937 147 0.32 96
IV.NRCA.HHZ. 2021-11-16T00:28:26.51 0.1 negative manual P 177 10.0788 134 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.0 0.000123 0.3 AML other m 2021-11-16T00:28:28.56
IV.NRCA.HHE. ML:1.2 0.0001895 0.7 AML other m 2021-11-16T00:28:28.52
IV.MC2.EHN. ML:1.3 0.00029378445 0.24 AML other m 2021-11-16T00:28:29.89
IV.MC2.EHE. ML:1.1 0.0002158564 0.28 AML other m 2021-11-16T00:28:29.81
IV.NRCA.HNN. ML:1.2 0.00018766465 0.51 AML other m 2021-11-16T00:28:30.17
IV.NRCA.HNE. ML:1.1 0.00015546119999999998 0.09 AML other m 2021-11-16T00:28:29.17
IV.FDMO.HHN. ML:0.7 0.00005271629 3.74 AML other m 2021-11-16T00:28:34.75
IV.FDMO.HHE. ML:0.4 0.000023553420000000002 0.2 AML other m 2021-11-16T00:28:29.23
IV.MMO1.EHE. ML:0.7 0.000037841705 0.12 AML other m 2021-11-16T00:28:30.82
IV.MMO1.EHN. ML:0.9 0.00007100946 2.08 AML other m 2021-11-16T00:28:32.80
IV.CESI.HHE. ML:1.0 0.000073293545 2.16 AML other m 2021-11-16T00:28:34.95
IV.CESI.HHN. ML:0.7 0.000040763464499999996 0.1 AML other m 2021-11-16T00:28:31.50
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