Earthquake with magnitude of ML 1.5 on date 26-10-2021 and time 23:22:22 (UTC) in region 4 km N Lusevera (UD)

A magnitude ML 1.5 earthquake occured in region: 4 km N Lusevera (UD), on

  • 26-10-2021 23:22:22 (UTC)
  • 27-10-2021 01:22:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.303, 13.258 at 10 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
Lusevera UD 4 643 643
Montenars UD 8 538 1181
Taipana UD 9 636 1817
Resia UD 9 1033 2850
Gemona del Friuli UD 9 10964 13814
Venzone UD 10 2117 15931
Tarcento UD 10 9012 24943
Magnano in Riviera UD 10 2336 27279
Artegna UD 10 2885 30164
Resiutta UD 11 309 30473
Nimis UD 11 2740 33213
Bordano UD 12 754 33967
Chiusaforte UD 13 672 34639
Moggio Udinese UD 13 1714 36353
Attimis UD 13 1805 38158
Trasaghis UD 14 2227 40385
Osoppo UD 15 2936 43321
Buja UD 15 6563 49884
Treppo Grande UD 15 1708 51592
Amaro UD 15 823 52415
Cassacco UD 15 2938 55353
Tricesimo UD 16 7600 62953
Dogna UD 17 175 63128
Reana del Rojale UD 17 4966 68094
Colloredo di Monte Albano UD 18 2223 70317
Faedis UD 18 2945 73262
Cavazzo Carnico UD 18 1052 74314
Majano UD 19 5945 80259

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km N of Udine (99169 inhabitants)
60 Km NE of Pordenone (51229 inhabitants)
83 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 1.5 2021-10-26
23:22:22
46.303 13.2578 10 2021-10-26
23:26:14
Sala Sismica INGV-Roma 97010751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-26 23:22:22 ± 0.06
Latitude 46.3030 ± 0.0036
Longitude 13.2578 ± 0.0052
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97010751

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 448
Semi-minor axis of confidence ellipse (meter) 264
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 330
Circular confidence region, given by single value of horizontal uncertainty (meter) 450
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 102
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
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) 0.08723
Epicentral distance of station farthest from the epicenter (degree) 0.68978
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 97010751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-26 23:26:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.STAL.HHZ. 2021-10-26T23:22:36.23 0.1 undecidable manual S 264 0.3804 50 -0.1 94
MN.TRI.HHZ. 2021-10-26T23:22:36.50 0.6 positive manual P 149 0.6898 50 0.76 36
OX.ACOM.HHZ. 2021-10-26T23:22:34.22 0.1 undecidable manual S 36 0.3013 50 0.23 93
OX.DRE.HHZ. 2021-10-26T23:22:33.64 0.1 undecidable manual S 116 0.2977 50 -0.22 93
OX.PLRO.HHZ. 2021-10-26T23:22:32.72 0.1 undecidable manual S 343 0.2572 50 0.04 97
OX.MLN.HHZ. 2021-10-26T23:22:32.01 1.0 positive manual P 251 0.4703 50 0.03 23
OX.FUSE.HHZ. 2021-10-26T23:22:31.08 0.1 undecidable manual S 302 0.2095 114 -0.16 96
OX.MPRI.HHZ. 2021-10-26T23:22:31.00 0.1 undecidable manual S 252 0.197 115 0.2 95
OX.ACOM.HHZ. 2021-10-26T23:22:29.13 0.1 positive manual P 36 0.3013 50 0.03 96
IV.STAL.HHZ. 2021-10-26T23:22:29.88 1.0 undecidable manual P 264 0.3804 50 -0.57 21
IV.PTCC.HHZ. 2021-10-26T23:22:28.33 0.1 undecidable manual S 32 0.1241 127 -0.05 99
OX.PLRO.HHZ. 2021-10-26T23:22:28.50 0.6 undecidable manual P 343 0.2572 50 0.16 47
OX.DRE.HHZ. 2021-10-26T23:22:28.65 0.6 positive manual P 116 0.2977 50 -0.38 45
OX.MPRI.HHZ. 2021-10-26T23:22:27.13 0.1 positive manual P 252 0.197 115 -0.13 97
RF.GEPF.HHZ. 2021-10-26T23:22:27.38 0.1 undecidable manual S 251 0.0872 137 0.06 100
OX.FUSE.HHZ. 2021-10-26T23:22:27.26 0.6 positive manual P 302 0.2095 114 -0.25 47
RF.GEPF.HHZ. 2021-10-26T23:22:25.38 0.1 positive manual P 251 0.0872 137 0.13 99
IV.PTCC.HHZ. 2021-10-26T23:22:25.82 0.1 negative manual P 32 0.1241 127 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
RF.GEPF.HHN. ML:1.7 0.000606 0.28 AML other m 2021-10-26T23:22:27.45
RF.GEPF.HHE. ML:1.6 0.000538 0.14 AML other m 2021-10-26T23:22:27.59
IV.PTCC.HHN. ML:1.5 0.0003345 0.2 AML other m 2021-10-26T23:22:28.47
IV.PTCC.HHE. ML:1.6 0.000362 0.3 AML other m 2021-10-26T23:22:28.43
OX.MPRI.HHE. ML:1.3 0.0001375 0.3 AML other m 2021-10-26T23:22:31.80
OX.MPRI.HHN. ML:1.5 0.0002175 0.94 AML other m 2021-10-26T23:22:32.68
OX.PLRO.HHN. ML:1.5 0.000148 1.34 AML other m 2021-10-26T23:22:33.21
OX.PLRO.HHE. ML:1.3 0.000104 0.98 AML other m 2021-10-26T23:22:33.35
OX.ACOM.HHE. ML:1.6 0.00017 1.08 AML other m 2021-10-26T23:22:35.68
OX.ACOM.HHN. ML:1.4 0.000105 0.46 AML other m 2021-10-26T23:22:35.32
IV.STAL.HHE. ML:1.1 4.155E-5 0.72 AML other m 2021-10-26T23:22:36.46
IV.STAL.HHN. ML:1.3 5.985E-5 0.96 AML other m 2021-10-26T23:22:37.60
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