Earthquake with magnitude of ML 1.0 on date 29-09-2021 and time 22:59:44 (Italy) in region 3 km SE Preone (UD)

A magnitude ML 1.0 earthquake occured in region: 3 km SE Preone (UD), on

  • 29-09-2021 20:59:44 (UTC)
  • 29-09-2021 22:59:44 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.373, 12.896 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
Preone UD 3 246 246
Enemonzo UD 4 1319 1565
Villa Santina UD 5 2233 3798
Lauco UD 6 729 4527
Socchieve UD 7 908 5435
Raveo UD 7 458 5893
Verzegnis UD 8 863 6756
Ampezzo UD 9 1006 7762
Tolmezzo UD 10 10440 18202
Tramonti di Sopra PN 11 321 18523
Cavazzo Carnico UD 11 1052 19575
Tramonti di Sotto PN 12 387 19962
Ovaro UD 13 1922 21884
Zuglio UD 14 595 22479
Arta Terme UD 15 2171 24650
Amaro UD 15 823 25473
Comeglians UD 16 516 25989
Clauzetto PN 16 380 26369
Vito d'Asio PN 16 769 27138
Trasaghis UD 17 2227 29365
Sutrio UD 17 1332 30697
Ravascletto UD 17 536 31233
Forni di Sotto UD 17 600 31833
Forgaria nel Friuli UD 17 1786 33619
Bordano UD 17 754 34373
Sauris UD 18 416 34789
Prato Carnico UD 18 904 35693
Cercivento UD 19 679 36372
Meduno PN 19 1574 37946
Venzone UD 19 2117 40063
Castelnovo del Friuli PN 19 880 40943
Osoppo UD 19 2936 43879
Travesio PN 20 1776 45655
Paluzza UD 20 2217 47872
Rigolato UD 20 448 48320

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km NW of Udine (99169 inhabitants)
50 Km NE of Pordenone (51229 inhabitants)
93 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 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 1.0 2021-09-29
20:59:44
46.3733 12.8957 6 2021-09-29
21:08:39
Sala Sismica INGV-Roma 96044261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-29 20:59:44 ± 0.21
Latitude 46.3733 ± 0.0045
Longitude 12.8957 ± 0.0065
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96044261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 550
Semi-minor axis of confidence ellipse (meter) 231
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 136
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.08364
Epicentral distance of station farthest from the epicenter (degree) 0.31746
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 96044261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-29 21:08:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
OX.CIMO.HHZ. 2021-09-29T20:59:56.26 0.6 undecidable manual S 259 0.3175 99 -0.88 37
OX.MLN.HHZ. 2021-09-29T20:59:56.99 0.6 undecidable manual S 221 0.2959 100 0.66 41
OX.PLRO.HHZ. 2021-09-29T20:59:54.48 0.6 undecidable manual S 45 0.2473 102 -0.01 49
RF.GEPF.HHZ. 2021-09-29T20:59:52.39 0.6 undecidable manual S 120 0.1943 105 -0.12 48
OX.CIMO.HHZ. 2021-09-29T20:59:51.54 1.0 positive manual P 259 0.3175 99 -0.37 22
OX.MLN.HHZ. 2021-09-29T20:59:51.77 1.0 negative manual P 221 0.2959 100 0.33 23
IV.STAL.HHZ. 2021-09-29T20:59:51.68 0.6 undecidable manual S 229 0.1709 107 0.05 49
OX.MPRI.HHZ. 2021-09-29T20:59:50.71 0.6 undecidable manual S 154 0.1466 109 -0.05 49
OX.PLRO.HHZ. 2021-09-29T20:59:50.50 0.6 negative manual P 45 0.2473 102 0.12 48
RF.GEPF.HHZ. 2021-09-29T20:59:49.04 0.6 positive manual P 120 0.1943 105 -0.2 48
OX.MPRI.HHZ. 2021-09-29T20:59:48.23 0.1 undecidable manual P 154 0.1466 109 0 100
OX.FUSE.HHZ. 2021-09-29T20:59:48.21 0.6 undecidable manual S 61 0.0836 122 -0.33 47
IV.STAL.HHZ. 2021-09-29T20:59:48.73 0.3 negative manual P 229 0.1709 107 0 75
OX.CLUD.HHZ. 2021-09-29T20:59:48.71 0.6 undecidable manual S 353 0.0845 122 0.14 49
OX.FUSE.HHZ. 2021-09-29T20:59:47.11 0.1 positive manual P 61 0.0836 122 0.16 98
OX.CLUD.HHZ. 2021-09-29T20:59:47.16 0.6 negative manual P 353 0.0845 122 0.2 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.CLUD.HNE. ML:0.8 0.0001205 0.8 AML other m 2021-09-29T20:59:49.44
OX.CLUD.HHN. ML:1 0.0001575 0.98 AML other m 2021-09-29T20:59:49.32
OX.CLUD.HNN. ML:0.9 0.00015 0.92 AML other m 2021-09-29T20:59:49.35
OX.CLUD.HHE. ML:0.9 0.000129 0.8 AML other m 2021-09-29T20:59:49.16
OX.MPRI.HHN. ML:1.3 0.0002155 1.58 AML other m 2021-09-29T20:59:51.80
OX.MPRI.HHE. ML:1.2 0.0001545 1.48 AML other m 2021-09-29T20:59:51.83
IV.STAL.HHN. ML:1.1 0.0001041 0.22 AML other m 2021-09-29T20:59:52.77
RF.GEPF.HHN. ML:1.1 8.76E-5 0.16 AML other m 2021-09-29T20:59:52.91
IV.STAL.HHE. ML:1.3 0.000161 0.44 AML other m 2021-09-29T20:59:53.22
RF.GEPF.HHE. ML:0.9 5.785E-5 1.06 AML other m 2021-09-29T20:59:53.76
OX.PLRO.HHE. ML:1.3 0.00010765 0.72 AML other m 2021-09-29T20:59:55.31
OX.PLRO.HHN. ML:1.2 9.96E-5 0.28 AML other m 2021-09-29T20:59:55.53
OX.CIMO.HHE. ML:0.6 1.315E-5 0.74 AML other m 2021-09-29T20:59:58.05
OX.CIMO.HHN. ML:0.4 1.1065E-5 0.26 AML other m 2021-09-29T20:59:59.62
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