Earthquake with magnitude of ML 0.3 on date 04-08-2021 and time 16:15:51 (Italy) in region 5 km SW Paularo (UD)

A magnitude ML 0.3 earthquake occured in region: 5 km SW Paularo (UD), on

  • 04-08-2021 14:15:51 (UTC)
  • 04-08-2021 16:15:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.494, 13.091 at 5 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
Paularo UD 5 2623 2623
Ligosullo UD 5 116 2739
Arta Terme UD 6 2171 4910
Treppo Carnico UD 6 618 5528
Zuglio UD 6 595 6123
Paluzza UD 7 2217 8340
Sutrio UD 8 1332 9672
Cercivento UD 9 679 10351
Tolmezzo UD 11 10440 20791
Moggio Udinese UD 12 1714 22505
Amaro UD 13 823 23328
Ravascletto UD 13 536 23864
Verzegnis UD 14 863 24727
Lauco UD 14 729 25456
Cavazzo Carnico UD 14 1052 26508
Resiutta UD 15 309 26817
Villa Santina UD 15 2233 29050
Pontebba UD 16 1433 30483
Comeglians UD 17 516 30999
Ovaro UD 17 1922 32921
Dogna UD 18 175 33096
Raveo UD 18 458 33554
Venzone UD 18 2117 35671
Enemonzo UD 19 1319 36990
Rigolato UD 19 448 37438
Chiusaforte UD 19 672 38110
Bordano UD 20 754 38864

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km N of Udine (99169 inhabitants)
68 Km NE of Pordenone (51229 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 0.3 2021-08-04
14:15:51
46.4938 13.0912 5 2021-08-04
14:25:27
Sala Sismica INGV-Roma 93672921
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-04 14:15:51 ± 0.21
Latitude 46.4938 ± 0.0054
Longitude 13.0912 ± 0.0065
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 93672921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 566
Semi-minor axis of confidence ellipse (meter) 275
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 162
Circular confidence region, given by single value of horizontal uncertainty (meter) 570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
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) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.06745
Epicentral distance of station farthest from the epicenter (degree) 0.33005
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.3

Field Value
Value 0.3
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 93672921
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-04 14:25:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
OX.PRED.HHE. 2021-08-04T14:16:04.17 0.6 undecidable manual S 99 0.3301 98 -0.06 47
NI.PALA.HHZ. 2021-08-04T14:16:01.71 0.3 undecidable manual S 205 0.2743 100 -0.39 67
NI.VINO.HHZ. 2021-08-04T14:16:01.92 0.3 undecidable manual S 152 0.2716 100 -0.08 72
OX.BAD.HHE. 2021-08-04T14:16:01.96 0.6 undecidable manual S 158 0.2806 100 -0.38 45
OX.PRED.HHE. 2021-08-04T14:15:59.39 0.3 undecidable manual P 99 0.3301 98 0.58 63
NI.VINO.HHZ. 2021-08-04T14:15:57.55 0.3 undecidable manual P 152 0.2716 100 0.03 72
OX.CLUD.HHZ. 2021-08-04T14:15:57.30 0.3 undecidable manual S 256 0.1493 108 -0.11 73
OX.MPRI.HHE. 2021-08-04T14:15:57.56 0.3 undecidable manual P 196 0.2626 100 0.23 70
OX.BAD.HHE. 2021-08-04T14:15:57.62 0.3 undecidable manual P 158 0.2806 100 -0.09 71
NI.PALA.HHZ. 2021-08-04T14:15:57.25 0.3 undecidable manual P 205 0.2743 100 -0.33 68
IV.FVI.HHE. 2021-08-04T14:15:56.41 0.1 undecidable manual P 296 0.2374 101 -0.35 91
OX.FUSE.HHZ. 2021-08-04T14:15:56.09 0.6 undecidable manual S 218 0.1007 115 0.41 46
OX.CLUD.HHZ. 2021-08-04T14:15:55.25 0.1 undecidable manual P 256 0.1493 108 0.38 92
OX.FUSE.HHZ. 2021-08-04T14:15:54.19 0.1 undecidable manual P 218 0.1007 115 0.32 94
OX.PLRO.HHZ. 2021-08-04T14:15:54.32 0.6 undecidable manual S 35 0.0674 125 -0.25 48
OX.PLRO.HHZ. 2021-08-04T14:15:53.18 0.1 undecidable manual P 35 0.0674 125 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.PLRO.HHE. ML:0.6 6.9779935E-5 0.3008 AML other m 2021-08-04T14:15:55.06
OX.PLRO.HHN. ML:0.9 0.000123 1.56 AML other m 2021-08-04T14:15:57.79
OX.CLUD.HNE. ML:0.6 4.3374795E-5 0.8384 AML other m 2021-08-04T14:15:58.92
OX.CLUD.HNN. ML:0.2 1.4060765E-5 0.3392 AML other m 2021-08-04T14:15:57.63
OX.CLUD.HHE. ML:0.2 1.2595025E-5 0.1024 AML other m 2021-08-04T14:15:57.00
OX.CLUD.HHN. ML:0.2 1.398849E-5 0.0832 AML other m 2021-08-04T14:15:57.72
NI.PALA.HHN. ML:0.6 1.848119E-5 0.576 AML other m 2021-08-04T14:16:01.24
NI.VINO.HHE. ML:0.3 1.0153335E-5 0.1408 AML other m 2021-08-04T14:16:02.78
NI.VINO.HHN. ML:0.3 8.578786E-6 0.4416 AML other m 2021-08-04T14:16:04.52
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