Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 28-07-2021 and time 07:59:27 (UTC) in region 5 km SW Verzegnis (UD)

A magnitude ML 1.7 earthquake occured in region: 5 km SW Verzegnis (UD), on

  • 28-07-2021 07:59:27 (UTC)
  • 28-07-2021 09:59:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.3680, 12.9420 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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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 5 863 863
Villa Santina UD 6 2233 3096
Lauco UD 6 729 3825
Preone UD 6 246 4071
Enemonzo UD 7 1319 5390
Tolmezzo UD 7 10440 15830
Cavazzo Carnico UD 8 1052 16882
Raveo UD 9 458 17340
Socchieve UD 10 908 18248
Amaro UD 12 823 19071
Zuglio UD 12 595 19666
Ampezzo UD 13 1006 20672
Tramonti di Sopra PN 13 321 20993
Arta Terme UD 13 2171 23164
Bordano UD 14 754 23918
Trasaghis UD 14 2227 26145
Ovaro UD 14 1922 28067
Tramonti di Sotto PN 15 387 28454
Vito d'Asio PN 15 769 29223
Clauzetto PN 16 380 29603
Venzone UD 16 2117 31720
Forgaria nel Friuli UD 16 1786 33506
Sutrio UD 17 1332 34838
Osoppo UD 17 2936 37774
Comeglians UD 17 516 38290
Ravascletto UD 18 536 38826
Cercivento UD 18 679 39505
Gemona del Friuli UD 18 10964 50469
Paluzza UD 19 2217 52686
Castelnovo del Friuli PN 19 880 53566
Travesio PN 20 1776 55342
Treppo Carnico UD 20 618 55960

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NW of Udine (99169 inhabitants)
51 Km NE of Pordenone (51229 inhabitants)
95 Km NE of Treviso (83731 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.7 2021-07-28
07:59:27		 46.3683 12.9423 11 2021-12-29
11:12:26		 Bollettino Sismico Italiano INGV 95145161
Reviewed
Rev100 		ML 1.7 2021-07-28
07:59:27		 46.3647 12.9393 11 2021-07-28
08:06:40		 Sala Sismica INGV-Roma 93294661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-28 07:59:27 ± 0.07
Latitude 46.3683 ± 0.0045
Longitude 12.9423 ± 0.0052
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95145161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 479
Semi-minor axis of confidence ellipse (meter) 390
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 167
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.30941
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 93294661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-28 08:06:40

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 38
Type of magnitude ML
Reference to an origin 95145161
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-07 08:20:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OX.GAGG.HHZ. 2021-07-28T08:00:15.32 3.0 undecidable manual S 0
ST.DOSS.HHZ. 2021-07-28T08:00:12.40 0.3 undecidable manual S 249 145.3434 50 3.22 3
OX.GAGG.HHZ. 2021-07-28T07:59:55.27 3.0 undecidable manual P 0
ST.DOSS.HHZ. 2021-07-28T07:59:53.68 0.1 undecidable manual P 249 145.3434 50 1.99 31
OE.WTTA.HHZ. 2021-07-28T07:59:52.68 3.0 positive manual P 0.41 0
SI.KOSI.HHZ. 2021-07-28T07:59:49.33 3.0 negative manual P -0.07 0
MN.TRI.HHZ. 2021-07-28T07:59:47.27 3.0 negative manual P 0.7 0
OX.CAE.HHZ. 2021-07-28T07:59:45.86 0.3 undecidable manual S 224 55.5999 50 0.62 61
NI.POLC.HHZ. 2021-07-28T07:59:44.83 0.3 undecidable manual S 222 50.9157 50 0.85 56
OX.PRED.HHE. 2021-07-28T07:59:43.80 0.3 undecidable manual S 80 48.3183 50 0.5 65
OX.MLN.HHZ. 2021-07-28T07:59:40.00 0.3 undecidable manual S 226 34.9428 50 0.28 70
OX.CIMO.HHZ. 2021-07-28T07:59:40.10 0.3 undecidable manual S 261 38.628 50 -0.61 63
OX.VARN.HHZ. 2021-07-28T07:59:40.99 0.1 undecidable manual P 237 76.6677 50 -0.12 89
IV.PTCC.HHZ. 2021-07-28T07:59:38.70 0.3 undecidable manual S 82 31.746 50 -0.18 72
NI.POLC.HHZ. 2021-07-28T07:59:37.09 0.1 undecidable manual P 222 50.9157 50 -0.05 95
OX.PLRO.HHZ. 2021-07-28T07:59:37.10 0.6 undecidable manual S 38 25.4523 50 -0.09 49
OX.CAE.HHZ. 2021-07-28T07:59:37.97 0.1 undecidable manual P 224 55.5999 50 0.1 93
NI.VINO.HHZ. 2021-07-28T07:59:37.70 0.6 undecidable manual S 116 28.5492 50 -0.31 47
OX.DRE.HHZ. 2021-07-28T07:59:37.96 0.1 undecidable manual P 112 58.0974 50 -0.29 89
OX.BAD.HHE. 2021-07-28T07:59:37.50 0.1 undecidable manual S 123 27.4503 50 -0.23 95
IV.FVI.HHZ. 2021-07-28T07:59:37.40 0.6 undecidable manual S 334 28.1496 50 -0.51 45
OX.PRED.HHE. 2021-07-28T07:59:36.66 0.1 undecidable manual P 80 48.3183 50 -0.09 95
IT.DANT.HNE. 2021-07-28T07:59:35.30 0.3 undecidable manual P 305 39.1275 50 -0.03 73
IV.STAL.HHZ. 2021-07-28T07:59:35.40 0.3 undecidable manual S 236 21.4674 116 -0.68 63
OX.MLN.HHZ. 2021-07-28T07:59:34.52 0.3 undecidable manual P 226 34.9428 50 -0.16 72
RF.GEPF.HHZ. 2021-07-28T07:59:34.90 0.3 undecidable manual S 125 18.2706 120 -0.2 73
IV.PTCC.HHZ. 2021-07-28T07:59:34.31 0.3 undecidable manual P 82 31.746 50 0.11 73
OX.CIMO.HHZ. 2021-07-28T07:59:34.84 0.1 negative manual P 261 38.628 50 -0.41 90
OX.PLRO.HHZ. 2021-07-28T07:59:33.39 0.1 undecidable manual P 38 25.4523 50 0.17 97
OX.MPRI.HHZ. 2021-07-28T07:59:33.90 0.3 undecidable manual S 166 14.5743 126 -0.13 75
NI.VINO.HHZ. 2021-07-28T07:59:33.48 0.1 positive manual P 116 28.5492 50 -0.21 95
NI.PALA.HHZ. 2021-07-28T07:59:33.80 0.3 undecidable manual S 186 13.7751 127 0 77
OX.BAD.HHE. 2021-07-28T07:59:33.44 0.1 undecidable manual P 123 27.4503 50 -0.1 98
IV.FVI.HHZ. 2021-07-28T07:59:33.59 0.1 undecidable manual P 334 28.1496 50 -0.05 99
OX.BOO.HNZ. 2021-07-28T07:59:33.40 0.3 undecidable manual S 114 13.0758 129 -0.22 73
OX.CLUD.HHZ. 2021-07-28T07:59:32.90 0.1 undecidable manual S 335 10.878 134 -0.13 100
RF.GEPF.HHZ. 2021-07-28T07:59:32.30 0.1 positive manual P 125 18.2706 120 0.28 96
OX.FUSE.HHZ. 2021-07-28T07:59:32.40 0.1 undecidable manual S 41 6.7932 147 0.28 98
IV.STAL.HHZ. 2021-07-28T07:59:32.23 0.1 undecidable manual P 236 21.4674 116 -0.35 94
OX.MPRI.HHZ. 2021-07-28T07:59:31.50 0.1 negative manual P 166 14.5743 126 0.1 100
NI.PALA.HHZ. 2021-07-28T07:59:31.39 0.1 negative manual P 186 13.7751 127 0.13 100
OX.BOO.HNZ. 2021-07-28T07:59:31.28 0.1 negative manual P 114 13.0758 129 0.12 100
OX.FUSE.HHZ. 2021-07-28T07:59:30.65 0.1 negative manual P 41 6.7932 147 0.35 96
OX.CLUD.HHZ. 2021-07-28T07:59:30.99 0.1 negative manual P 335 10.878 134 0.17 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.CLUD.HNN. ML:1.9 0.0008580000000000001 0.66 AML other m 2021-07-28T07:59:33.04
OX.CLUD.HHN. ML:1.9 0.000919 0.66 AML other m 2021-07-28T07:59:33.04
OX.CLUD.HHE. ML:1.6 0.0004935 0.68 AML other m 2021-07-28T07:59:33.44
OX.CLUD.HNE. ML:1.6 0.000468 0.68 AML other m 2021-07-28T07:59:33.44
OX.MPRI.HHN. ML:1.7 0.0004605 0.58 AML other m 2021-07-28T07:59:34.32
OX.MPRI.HNN. ML:1.6 0.0003895 0.26 AML other m 2021-07-28T07:59:34.31
OX.MPRI.HNE. ML:1.5 0.00032499999999999993 0.4 AML other m 2021-07-28T07:59:34.09
OX.MPRI.HHE. ML:1.6 0.000432 0.4 AML other m 2021-07-28T07:59:34.10
NI.PALA.HHN. ML:2.0 0.000948 0.4 AML other m 2021-07-28T07:59:34.48
NI.PALA.HHE. ML:1.9 0.0007975000000000001 0.18 AML other m 2021-07-28T07:59:34.62
RF.GEPF.HHE. ML:1.8 0.0005344999999999999 0.3 AML other m 2021-07-28T07:59:35.60
IV.STAL.HNE. ML:2.1 0.0009855 0.1 AML other m 2021-07-28T07:59:36.18
IV.STAL.HHE. ML:1.9 0.000585 0.16 AML other m 2021-07-28T07:59:36.26
IV.STAL.HNN. ML:2.2 0.001185 0.12 AML other m 2021-07-28T07:59:36.31
IV.STAL.HHN. ML:2.0 0.0006785 0.2 AML other m 2021-07-28T07:59:36.31
RF.GEPF.HHN. ML:1.7 0.0004305 0.48 AML other m 2021-07-28T07:59:36.59
IV.FVI.HHE. ML:1.6 0.00020899999999999998 1.48 AML other m 2021-07-28T07:59:38.87
IV.FVI.HHN. ML:1.6 0.0001975 0.9 AML other m 2021-07-28T07:59:38.40
OX.PLRO.HHN. ML:1.7 0.00028649999999999997 0.66 AML other m 2021-07-28T07:59:38.82
NI.VINO.HHE. ML:1.5 0.00015150000000000002 0.6 AML other m 2021-07-28T07:59:38.32
OX.PLRO.HHE. ML:1.7 0.00028700000000000004 0.3 AML other m 2021-07-28T07:59:38.66
NI.VINO.HHN. ML:1.5 0.00015000000000000001 1.18 AML other m 2021-07-28T07:59:39.59
OX.MLN.HHN. ML:1.8 0.0002495 0.44 AML other m 2021-07-28T07:59:40.68
OX.MLN.HHE. ML:1.6 0.0001805 0.4 AML other m 2021-07-28T07:59:40.80
OX.CIMO.HHN. ML:1.3 0.0000697 0.84 AML other m 2021-07-28T07:59:41.38
OX.CIMO.HNN. ML:1.3 0.00007005 0.82 AML other m 2021-07-28T07:59:41.39
OX.CIMO.HHE. ML:1.2 0.00006055 1.2 AML other m 2021-07-28T07:59:42.83
OX.CIMO.HNE. ML:1.3 0.00007495 1.18 AML other m 2021-07-28T07:59:42.83
OX.CAE.HHE. ML:1.9 0.0001635 1.36 AML other m 2021-07-28T07:59:47.07
NI.POLC.HHN. ML:2.1 0.0003185 0.3 AML other m 2021-07-28T07:59:48.74
OX.CAE.HHN. ML:1.6 0.0000804 0.68 AML other m 2021-07-28T07:59:48.55
NI.POLC.HHE. ML:2.1 0.00033499999999999996 0.86 AML other m 2021-07-28T07:59:49.12
OX.VARN.HHE. ML:1.7 0.00008085 0.3 AML other m 2021-07-28T07:59:56.05
OX.VARN.HHN. ML:1.6 0.0000639 0.94 AML other m 2021-07-28T07:59:56.07
MN.TRI.HHE. ML:1.8 0.0000651 1.26 AML other m 2021-07-28T08:00:01.81
MN.TRI.HHN. ML:1.5 0.000030200000000000002 1.24 AML other m 2021-07-28T08:00:02.32
ST.DOSS.HHN. ML:2.0 0.00004910000000000001 0.38 AML other m 2021-07-28T08:00:16.34
ST.DOSS.HHE. ML:1.9 0.0000435 1.16 AML other m 2021-07-28T08:00:16.99
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