Earthquake with magnitude of ML 0.5 on date 23-09-2021 and time 20:46:21 (Italy) in region 2 km S Venzone (UD)

A magnitude ML 0.5 earthquake occured in region: 2 km S Venzone (UD), on

  • 23-09-2021 18:46:21 (UTC)
  • 23-09-2021 20:46:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.314, 13.143 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
Venzone UD 2 2117 2117
Bordano UD 3 754 2871
Gemona del Friuli UD 4 10964 13835
Trasaghis UD 6 2227 16062
Montenars UD 7 538 16600
Amaro UD 8 823 17423
Artegna UD 8 2885 20308
Osoppo UD 8 2936 23244
Magnano in Riviera UD 10 2336 25580
Cavazzo Carnico UD 10 1052 26632
Lusevera UD 11 643 27275
Resiutta UD 11 309 27584
Moggio Udinese UD 12 1714 29298
Buja UD 12 6563 35861
Tarcento UD 13 9012 44873
Treppo Grande UD 14 1708 46581
Tolmezzo UD 14 10440 57021
Verzegnis UD 14 863 57884
Resia UD 14 1033 58917
Majano UD 15 5945 64862
Nimis UD 16 2740 67602
Cassacco UD 16 2938 70540
Colloredo di Monte Albano UD 16 2223 72763
Forgaria nel Friuli UD 17 1786 74549
Chiusaforte UD 17 672 75221
Vito d'Asio PN 17 769 75990
Taipana UD 17 636 76626
Tricesimo UD 18 7600 84226
Zuglio UD 19 595 84821
Attimis UD 19 1805 86626
San Daniele del Friuli UD 20 8013 94639
Ragogna UD 20 2909 97548
Clauzetto PN 20 380 97928
Arta Terme UD 20 2171 100099
Reana del Rojale UD 20 4966 105065
Dogna UD 20 175 105240

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of Udine (99169 inhabitants)
55 Km NE of Pordenone (51229 inhabitants)
88 Km NW of Trieste (204420 inhabitants)
100 Km NE of Treviso (83731 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 0.5 2021-09-23
18:46:21
46.3143 13.1427 11 2021-09-23
19:03:47
Sala Sismica INGV-Roma 95794431
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-23 18:46:21 ± 0.08
Latitude 46.3143 ± 0.0045
Longitude 13.1427 ± 0.0065
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95794431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 464
Semi-minor axis of confidence ellipse (meter) 324
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 53
Circular confidence region, given by single value of horizontal uncertainty (meter) 460
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.37682
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 95794431
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-23 19:03:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.TRI.HHZ. 2021-09-23T18:46:50.50 3.0 undecidable manual S -0.02 0
IV.FVI.HHE. 2021-09-23T18:46:34.81 0.3 undecidable manual S 319 0.3768 90 -0.4 65
OX.PRED.HHE. 2021-09-23T18:46:33.35 0.6 undecidable manual S 66 0.3184 90 -0.13 47
OX.PLRO.HHZ. 2021-09-23T18:46:30.84 0.6 undecidable manual S 1 0.2347 90 -0.16 47
IV.FVI.HHE. 2021-09-23T18:46:29.29 0.3 undecidable manual P 319 0.3768 90 -0.17 69
NI.PALA.HHZ. 2021-09-23T18:46:28.85 0.6 undecidable manual S 245 0.1664 91 -0.12 48
OX.PRED.HHE. 2021-09-23T18:46:28.64 0.3 undecidable manual P 66 0.3184 90 0.18 69
OX.FUSE.HHZ. 2021-09-23T18:46:28.37 0.3 undecidable manual S 316 0.1394 92 0.18 72
OX.BAD.HHE. 2021-09-23T18:46:27.02 0.1 undecidable manual S 139 0.1061 110 -0.2 96
NI.VINO.HHZ. 2021-09-23T18:46:27.36 0.3 undecidable manual S 123 0.1097 108 0.04 74
OX.MPRI.HHZ. 2021-09-23T18:46:27.96 0.3 undecidable manual S 236 0.1295 94 0.06 73
OX.PLRO.HHZ. 2021-09-23T18:46:27.12 0.1 undecidable manual P 1 0.2347 90 0.09 95
RF.GEPF.HHZ. 2021-09-23T18:46:25.97 0.3 undecidable manual S 184 0.0396 152 0.22 73
OX.FUSE.HHZ. 2021-09-23T18:46:25.52 0.1 undecidable manual P 316 0.1394 92 0.12 97
NI.PALA.HHZ. 2021-09-23T18:46:25.83 0.3 undecidable manual P 245 0.1664 91 -0.03 74
OX.BOO.HHE. 2021-09-23T18:46:25.65 0.1 undecidable manual S 280 0.0306 158 0.01 100
OX.MPRI.HHZ. 2021-09-23T18:46:25.43 0.1 undecidable manual P 236 0.1295 94 0.2 95
OX.BAD.HHE. 2021-09-23T18:46:24.95 0.1 undecidable manual P 139 0.1061 110 0.11 97
NI.VINO.HHZ. 2021-09-23T18:46:24.99 0.1 undecidable manual P 123 0.1097 108 0.09 97
OX.BOO.HHE. 2021-09-23T18:46:24.12 0.1 undecidable manual P 280 0.0306 158 0.19 98
RF.GEPF.HHZ. 2021-09-23T18:46:23.22 0.3 undecidable manual P 184 0.0396 152 -0.77 61
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
NI.VINO.HHE. ML:0.5 3.54E-5 0.46 AML other m 2021-09-23T18:46:27.76
NI.VINO.HHN. ML:0.4 2.739274E-5 0.1792 AML other m 2021-09-23T18:46:27.51
OX.PLRO.HHE. ML:0.4 1.5830653E-5 0.1152 AML other m 2021-09-23T18:46:31.30
OX.PLRO.HHN. ML:0.9 4.677592E-5 0.2304 AML other m 2021-09-23T18:46:31.46
RF.GEPF.HHE. ML:0.3 2.8882345E-5 0.1152 AML other m 2021-09-23T18:46:27.43
RF.GEPF.HHN. ML:0.7 8.6059215E-5 0.2048 AML other m 2021-09-23T18:46:26.18
OX.MPRI.HHE. ML:0.2 1.632302495E-5 0.256 AML other m 2021-09-23T18:46:28.62
OX.MPRI.HHN. ML:0.3 1.9966602E-5 0.128 AML other m 2021-09-23T18:46:28.56
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