Earthquake with magnitude of ML 0.7 on date 21-10-2021 and time 09:49:47 (UTC) in region 6 km SW Ampezzo (UD)

A magnitude ML 0.7 earthquake occured in region: 6 km SW Ampezzo (UD), on

  • 21-10-2021 09:49:47 (UTC)
  • 21-10-2021 11:49:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.369, 12.758 at 9 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
Ampezzo UD 6 1006 1006
Socchieve UD 6 908 1914
Tramonti di Sopra PN 7 321 2235
Forni di Sotto UD 7 600 2835
Preone UD 9 246 3081
Tramonti di Sotto PN 10 387 3468
Enemonzo UD 11 1319 4787
Raveo UD 11 458 5245
Sauris UD 12 416 5661
Villa Santina UD 14 2233 7894
Lauco UD 15 729 8623
Forni di Sopra UD 15 993 9616
Ovaro UD 15 1922 11538
Meduno PN 17 1574 13112
Prato Carnico UD 17 904 14016
Frisanco PN 18 622 14638
Verzegnis UD 18 863 15501
Comeglians UD 18 516 16017
Cavasso Nuovo PN 19 1525 17542
Clauzetto PN 20 380 17922
Fanna PN 20 1583 19505

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km N of Pordenone (51229 inhabitants)
50 Km NW of Udine (99169 inhabitants)
87 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 0.7 2021-10-21
09:49:47
46.3688 12.7583 9 2021-10-21
09:56:43
Sala Sismica INGV-Roma 96838441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-21 09:49:47 ± 0.23
Latitude 46.3688 ± 0.0036
Longitude 12.7583 ± 0.0065
Depth (km) 9 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96838441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 520
Semi-minor axis of confidence ellipse (meter) 97
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 301
Circular confidence region, given by single value of horizontal uncertainty (meter) 520
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 30
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
Epicentral distance of station farthest from the epicenter (degree) 0.24012
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 96838441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-21 09:56:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.IMI.HHZ. 2021-10-21T09:50:36.28 3.0 undecidable manual Pn 2.57 0
IV.CPGN.HNZ. 2021-10-21T09:50:35.81 3.0 undecidable manual Pg 13.37 0
IV.MSSA.HHZ. 2021-10-21T09:50:34.94 3.0 negative manual Pg 14.61 0
IV.BADI.EHZ. 2021-10-21T09:50:31.22 3.0 undecidable manual Pn 4.89 0
IV.SNTG.HHZ. 2021-10-21T09:50:30.73 3.0 undecidable manual Pn -0.09 0
IV.SFI.EHZ. 2021-10-21T09:50:24.90 3.0 negative manual Pn 4.21 0
IV.MILN.HNZ. 2021-10-21T09:50:22.66 3.0 undecidable manual Pg 13.82 0
IT.FIE.HGZ. 2021-10-21T09:50:21.28 3.0 undecidable manual Pn -0.93 0
IV.SARZ.HNZ. 2021-10-21T09:50:15.90 3.0 undecidable manual Pn -1.29 0
SL.LJU.BHZ. 2021-10-21T09:50:11.92 3.0 undecidable manual Pg 5.82 0
CR.ZAG.BHZ. 2021-10-21T09:50:11.92 3.0 undecidable manual Pn -7.76 0
GU.GRAM.HHZ. 2021-10-21T09:50:11.65 3.0 undecidable manual Pn -4.26 0
IV.MAGA.HHZ. 2021-10-21T09:49:58.35 3.0 undecidable manual Pn 0.66 0
OX.MLN.HHE. 2021-10-21T09:49:57.77 0.3 undecidable manual S 204 0.2401 109 0.22 70
IV.FVI.HHZ. 2021-10-21T09:49:56.77 0.6 undecidable manual S 4 0.2284 110 -0.33 46
OX.CIMO.HHE. 2021-10-21T09:49:56.72 0.6 undecidable manual S 255 0.2239 110 -0.22 47
NI.PALA.HHZ. 2021-10-21T09:49:55.05 0.6 undecidable manual S 137 0.1682 116 0.07 49
OX.MPRI.HHZ. 2021-10-21T09:49:55.74 0.3 undecidable manual S 129 0.2032 112 -0.48 67
IV.STAL.HHZ. 2021-10-21T09:49:53.23 0.6 undecidable manual S 197 0.1133 126 0.07 50
OX.CLUD.HHE. 2021-10-21T09:49:53.54 0.6 undecidable manual S 44 0.1223 124 0.11 49
OX.MLN.HHE. 2021-10-21T09:49:53.63 0.1 undecidable manual P 204 0.2401 109 0.22 94
IV.FVI.HHZ. 2021-10-21T09:49:53.55 1.0 undecidable manual P 4 0.2284 110 0.4 23
OX.MPRI.HHZ. 2021-10-21T09:49:52.20 1.0 undecidable manual P 129 0.2032 112 -0.44 23
OX.FUSE.HHZ. 2021-10-21T09:49:52.21 0.1 undecidable manual P 75 0.1736 115 0.19 96
OX.CIMO.HHE. 2021-10-21T09:49:52.75 0.1 undecidable manual P 255 0.2239 110 -0.31 92
IV.STAL.HHZ. 2021-10-21T09:49:51.08 0.1 undecidable manual P 197 0.1133 126 0.2 97
OX.CLUD.HHE. 2021-10-21T09:49:51.30 0.1 undecidable manual P 44 0.1223 124 0.27 95
NI.PALA.HHZ. 2021-10-21T09:49:51.70 0.3 negative manual P 137 0.1682 116 -0.23 71
NI.PURA.HHE. 2021-10-21T09:49:49.92 0.1 undecidable manual P 349 0.0585 145 -0.08 100
SI.ROSI.HHZ. 2021-10-21T09:49:41.84 3.0 negative manual P 0.5 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.STAL.HHN. ML:0.9 8.34E-5 0.6 AML other m 2021-10-21T09:49:53.59
IV.STAL.HHE. ML:1 0.0001041 0.24 AML other m 2021-10-21T09:49:54.23
NI.PALA.HHE. ML:0.7 4.10587E-5 0.6656 AML other m 2021-10-21T09:49:55.49
NI.PALA.HHN. ML:0.6 3.610068E-5 1.4592 AML other m 2021-10-21T09:49:55.56
OX.MPRI.HHE. ML:0.4 1.479372E-5 1.7024 AML other m 2021-10-21T09:49:56.10
OX.MPRI.HHN. ML:0.5 2.161418425E-5 1.9968 AML other m 2021-10-21T09:49:56.85
IV.FVI.HHE. ML:0.4 1.42945335E-5 0.1408 AML other m 2021-10-21T09:49:57.04
IV.FVI.HHN. ML:-0.1 7.160909E-6 0.1152 AML other m 2021-10-21T09:49:57.39
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