Earthquake with magnitude of ML 0.5 on date 12-09-2021 and time 02:50:15 (Italy) in region 8 km SW Verzegnis (UD)

A magnitude ML 0.5 earthquake occured in region: 8 km SW Verzegnis (UD), on

  • 12-09-2021 00:50:15 (UTC)
  • 12-09-2021 02:50:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.33, 12.935 at 6 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
Verzegnis UD 8 863 863
Preone UD 9 246 1109
Cavazzo Carnico UD 9 1052 2161
Villa Santina UD 10 2233 4394
Enemonzo UD 10 1319 5713
Lauco UD 10 729 6442
Tolmezzo UD 11 10440 16882
Vito d'Asio PN 11 769 17651
Tramonti di Sopra PN 11 321 17972
Clauzetto PN 11 380 18352
Tramonti di Sotto PN 12 387 18739
Socchieve UD 12 908 19647
Trasaghis UD 12 2227 21874
Forgaria nel Friuli UD 12 1786 23660
Raveo UD 13 458 24118
Amaro UD 13 823 24941
Bordano UD 13 754 25695
Osoppo UD 14 2936 28631
Ampezzo UD 14 1006 29637
Castelnovo del Friuli PN 15 880 30517
Travesio PN 16 1776 32293
Venzone UD 16 2117 34410
Zuglio UD 16 595 35005
Pinzano al Tagliamento PN 16 1525 36530
Gemona del Friuli UD 17 10964 47494
Meduno PN 17 1574 49068
Ragogna UD 17 2909 51977
Arta Terme UD 17 2171 54148
Ovaro UD 18 1922 56070
Majano UD 19 5945 62015
Artegna UD 20 2885 64900
San Daniele del Friuli UD 20 8013 72913
Cavasso Nuovo PN 20 1525 74438
Buja UD 20 6563 81001
Sequals PN 20 2200 83201

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of Udine (99169 inhabitants)
47 Km NE of Pordenone (51229 inhabitants)
91 Km NE of Treviso (83731 inhabitants)
99 Km NW of Trieste (204420 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 the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.5 2021-09-12
00:50:15
46.3305 12.9352 6 2021-09-12
00:54:24
Sala Sismica INGV-Roma 95322581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-12 00:50:15 ± 0.29
Latitude 46.3305 ± 0.0045
Longitude 12.9352 ± 0.0065
Depth (km) 6 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95322581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 500
Semi-minor axis of confidence ellipse (meter) 163
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 226
Circular confidence region, given by single value of horizontal uncertainty (meter) 500
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 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.08544
Epicentral distance of station farthest from the epicenter (degree) 0.28688
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:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 95322581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-12 00:54:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
OX.MLN.HHZ. 2021-09-12T00:50:27.12 0.6 undecidable manual S 231 0.286 101 0.2 63
IV.FVI.HHZ. 2021-09-12T00:50:26.45 0.6 undecidable manual S 338 0.2869 101 -0.5 59
IV.FVI.HHZ. 2021-09-12T00:50:22.62 0.6 undecidable manual P 338 0.2869 101 0.42 60
IV.STAL.HHZ. 2021-09-12T00:50:22.39 0.6 undecidable manual S 246 0.1709 108 -0.22 64
OX.MLN.HHZ. 2021-09-12T00:50:22.03 1.0 negative manual P 231 0.286 101 -0.16 32
OX.CLUD.HHZ. 2021-09-12T00:50:21.41 0.6 undecidable manual S 344 0.1313 112 0.21 65
RF.GEPF.HHZ. 2021-09-12T00:50:21.85 0.3 undecidable manual S 111 0.1511 110 -0.05 100
OX.CLUD.HHZ. 2021-09-12T00:50:19.04 1.0 negative manual P 344 0.1313 112 0.16 33
RF.GEPF.HHZ. 2021-09-12T00:50:19.17 0.6 negative manual P 111 0.1511 110 -0.12 66
IV.STAL.HHZ. 2021-09-12T00:50:19.54 1.0 negative manual P 246 0.1709 108 -0.16 32
NI.PALA.HHZ. 2021-09-12T00:50:18.07 0.3 positive manual P 185 0.0854 122 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.CLUD.HHN. ML:0 1.12E-5 0.18 AML other m 2021-09-12T00:50:19.26
NI.PALA.HHE. ML:0.7 8.94E-5 0.26 AML other m 2021-09-12T00:50:20.80
NI.PALA.HHN. ML:0.7 8.69E-5 1.04 AML other m 2021-09-12T00:50:20.89
RF.GEPF.HHE. ML:0.6 4.115E-5 1.8 AML other m 2021-09-12T00:50:21.02
RF.GEPF.HHN. ML:0.8 5.61E-5 0.18 AML other m 2021-09-12T00:50:22.04
OX.CLUD.HHE. ML:0.1 1.535E-5 0.78 AML other m 2021-09-12T00:50:22.26
IV.STAL.HHE. ML:0.4 2.215E-5 0.26 AML other m 2021-09-12T00:50:22.86
IV.STAL.HHN. ML:0.5 2.715E-5 1.04 AML other m 2021-09-12T00:50:23.93
IV.FVI.HHN. ML:0.3 1.048E-5 1.26 AML other m 2021-09-12T00:50:28.02
IV.FVI.HHE. ML:0.3 1.21E-5 1.48 AML other m 2021-09-12T00:50:28.97
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