Earthquake with magnitude of ML 1.7 on date 21-09-2021 and time 03:13:51 (Italy) in region 2 km S Fanna (PN)

A magnitude ML 1.7 earthquake occured in region: 2 km S Fanna (PN), on

  • 21-09-2021 01:13:51 (UTC)
  • 21-09-2021 03:13:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.169, 12.757 at 11 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
Fanna PN 2 1583 1583
Cavasso Nuovo PN 3 1525 3108
Arba PN 4 1309 4417
Maniago PN 4 11698 16115
Vajont PN 5 1719 17834
Sequals PN 5 2200 20034
Frisanco PN 6 622 20656
Meduno PN 6 1574 22230
Montereale Valcellina PN 8 4433 26663
Travesio PN 10 1776 28439
Vivaro PN 11 1352 29791
Andreis PN 12 259 30050
Castelnovo del Friuli PN 12 880 30930
Spilimbergo PN 13 12124 43054
Tramonti di Sotto PN 13 387 43441
Clauzetto PN 14 380 43821
Pinzano al Tagliamento PN 15 1525 45346
Barcis PN 15 256 45602
San Quirino PN 16 4383 49985
Tramonti di Sopra PN 16 321 50306
San Giorgio della Richinvelda PN 16 4650 54956
Dignano UD 17 2317 57273
Ragogna UD 17 2909 60182
Aviano PN 17 9106 69288
Vito d'Asio PN 17 769 70057
Forgaria nel Friuli UD 18 1786 71843
San Martino al Tagliamento PN 18 1468 73311
San Daniele del Friuli UD 20 8013 81324

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NE of Pordenone (51229 inhabitants)
39 Km W of Udine (99169 inhabitants)
68 Km NE of Treviso (83731 inhabitants)
88 Km NE of Venezia (263352 inhabitants)
97 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 1.7 2021-09-21
01:13:51
46.1693 12.757 11 2021-09-21
01:31:16
Sala Sismica INGV-Roma 95679801
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-21 01:13:51 ± 0.09
Latitude 46.1693 ± 0.0054
Longitude 12.7570 ± 0.0065
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95679801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 690
Semi-minor axis of confidence ellipse (meter) 64
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 152
Circular confidence region, given by single value of horizontal uncertainty (meter) 690
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 157
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 28
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
Epicentral distance of station farthest from the epicenter (degree) 0.48563
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 95679801
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-21 01:31:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PLMA.HHZ. 2021-09-21T01:15:15.60 3.0 undecidable manual Sn 1.14 0
IV.CRTC.HHZ. 2021-09-21T01:15:01.15 3.0 undecidable manual Sn -0.14 0
SL.LJU.BHZ. 2021-09-21T01:14:35.17 3.0 undecidable manual S 2.4 0
SL.LJU.BHZ. 2021-09-21T01:14:17.32 3.0 undecidable manual P 2.49 0
IV.TREG.EHZ. 2021-09-21T01:14:15.33 3.0 undecidable manual P -0.03 0
ST.PANI.EHZ. 2021-09-21T01:14:13.92 3.0 negative manual P 2.67 0
OX.VARN.HHZ. 2021-09-21T01:14:09.52 0.6 undecidable manual S 249 0.4856 50 0.61 41
IV.FVI.HHZ. 2021-09-21T01:14:07.39 0.3 undecidable manual S 2 0.4272 50 0.2 69
MN.TRI.HHZ. 2021-09-21T01:14:07.37 3.0 positive manual P -1.44 0
OX.ACOM.HHZ. 2021-09-21T01:14:05.11 3.0 positive manual P 0.2 0
NI.VINO.HHZ. 2021-09-21T01:14:05.79 0.3 undecidable manual S 77 0.3687 50 0.34 68
IV.FREG.EHZ. 2021-09-21T01:14:04.90 1.0 undecidable manual S 243 0.3462 50 0.12 24
OX.CAE.HHZ. 2021-09-21T01:14:03.38 0.6 undecidable manual S 234 0.2734 50 0.75 40
IT.PNAL.HNE. 2021-09-21T01:14:03.78 0.3 undecidable manual S 271 0.3175 50 -0.15 71
OX.FUSE.HHZ. 2021-09-21T01:14:03.49 0.6 undecidable manual S 34 0.2968 50 0.15 48
OX.CLUD.HHZ. 2021-09-21T01:14:03.67 0.3 undecidable manual S 17 0.2995 50 0.25 70
NI.PURA.HHE. 2021-09-21T01:14:02.87 0.3 undecidable manual S 358 0.2563 50 0.74 61
OX.BOO.HHE. 2021-09-21T01:14:02.67 0.3 undecidable manual S 57 0.2797 50 -0.15 72
OX.VARN.HHZ. 2021-09-21T01:14:01.53 0.1 undecidable manual P 249 0.4856 50 -0.23 90
OX.CIMO.HHZ. 2021-09-21T01:14:01.77 0.3 undecidable manual S 303 0.2581 50 -0.42 68
OX.MPRI.HHZ. 2021-09-21T01:14:00.08 0.3 undecidable manual S 66 0.1745 119 0.39 70
IV.FVI.HHZ. 2021-09-21T01:14:00.71 0.1 undecidable manual P 2 0.4272 50 -0.06 95
NI.VINO.HHZ. 2021-09-21T01:13:59.42 0.1 undecidable manual P 77 0.3687 50 -0.34 90
IV.FREG.EHZ. 2021-09-21T01:13:59.76 0.1 undecidable manual P 243 0.3462 50 0.38 90
OX.CLUD.HHZ. 2021-09-21T01:13:58.44 0.1 undecidable manual P 17 0.2995 50 -0.15 95
OX.CAE.HHZ. 2021-09-21T01:13:58.07 0.1 undecidable manual P 234 0.2734 50 -0.06 98
IT.PNAL.HNE. 2021-09-21T01:13:58.78 0.1 undecidable manual P 271 0.3175 50 -0.11 96
OX.FUSE.HHZ. 2021-09-21T01:13:58.17 0.1 undecidable manual P 34 0.2968 50 -0.37 91
IV.STAL.HHZ. 2021-09-21T01:13:57.40 0.3 undecidable manual S 340 0.0962 135 0.16 74
OX.CIMO.HHZ. 2021-09-21T01:13:57.54 0.1 undecidable manual P 303 0.2581 50 -0.34 92
OX.BOO.HHE. 2021-09-21T01:13:57.94 0.1 undecidable manual P 57 0.2797 50 -0.3 93
OX.MLN.HHZ. 2021-09-21T01:13:57.60 0.3 undecidable manual S 259 0.0998 134 0.25 73
NI.PURA.HHE. 2021-09-21T01:13:57.92 0.1 undecidable manual P 358 0.2563 50 0.07 98
OX.MPRI.HHZ. 2021-09-21T01:13:56.47 0.1 undecidable manual P 66 0.1745 119 0.04 100
IV.STAL.HHZ. 2021-09-21T01:13:54.82 0.1 undecidable manual P 340 0.0962 135 -0.21 98
OX.MLN.HHZ. 2021-09-21T01:13:54.94 0.1 undecidable manual P 259 0.0998 134 -0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.STAL.HNN. ML:2 0.001254 0.3 AML other m 2021-09-21T01:13:57.75
IV.STAL.HHN. ML:1.9 0.0009565 0.22 AML other m 2021-09-21T01:13:57.78
IV.STAL.HNE. ML:2 0.001185 0.66 AML other m 2021-09-21T01:13:58.12
OX.MLN.HHE. ML:1.4 0.0002755 1.58 AML other m 2021-09-21T01:13:58.06
IV.STAL.HHE. ML:2 0.0010645 0.76 AML other m 2021-09-21T01:13:58.49
OX.MLN.HHN. ML:1.5 0.0003515 0.3 AML other m 2021-09-21T01:13:59.43
OX.MPRI.HHE. ML:1.8 0.0005225 0.32 AML other m 2021-09-21T01:14:01.54
OX.MPRI.HNE. ML:1.7 0.0004 0.34 AML other m 2021-09-21T01:14:01.54
OX.CIMO.HNE. ML:1.4 0.0001153 0.1 AML other m 2021-09-21T01:14:02.19
OX.CIMO.HHE. ML:1.4 0.000124 0.12 AML other m 2021-09-21T01:14:02.19
OX.CIMO.HNN. ML:1.5 0.0001775 1.14 AML other m 2021-09-21T01:14:02.13
OX.CIMO.HHN. ML:1.6 0.0001805 1.62 AML other m 2021-09-21T01:14:03.05
OX.MPRI.HNN. ML:2 0.0008275 1.66 AML other m 2021-09-21T01:14:05.99
OX.MPRI.HHN. ML:2.2 0.001067 1.64 AML other m 2021-09-21T01:14:05.99
OX.CLUD.HHE. ML:1.2 5.895E-5 1.18 AML other m 2021-09-21T01:14:05.24
OX.CLUD.HHN. ML:1.2 6.065E-5 0.78 AML other m 2021-09-21T01:14:06.59
OX.CLUD.HNE. ML:1.2 7.71E-5 0.72 AML other m 2021-09-21T01:14:06.84
OX.CAE.HHE. ML:2 0.000461 0.42 AML other m 2021-09-21T01:14:06.74
OX.CAE.HHN. ML:1.6 0.00018 0.5 AML other m 2021-09-21T01:14:07.27
OX.CLUD.HNN. ML:1.2 6.64E-5 0.72 AML other m 2021-09-21T01:14:09.42
NI.VINO.HHE. ML:1.4 8.45E-5 0.54 AML other m 2021-09-21T01:14:09.31
NI.VINO.HHN. ML:1.4 8.375E-5 1.14 AML other m 2021-09-21T01:14:09.90
IV.FVI.HHN. ML:1.3 5.445E-5 0.78 AML other m 2021-09-21T01:14:10.39
IV.FREG.EHE. ML:2.1 0.000478 1.3 AML other m 2021-09-21T01:14:10.09
IV.FREG.EHN. ML:1.9 0.0003085 1.26 AML other m 2021-09-21T01:14:11.22
IV.FVI.HHE. ML:1.3 5.46E-5 0.22 AML other m 2021-09-21T01:14:11.71
OX.VARN.HHN. ML:1.8 0.000151 1.22 AML other m 2021-09-21T01:14:14.19
OX.VARN.HHE. ML:1.8 0.000154 0.62 AML other m 2021-09-21T01:14:15.60
OX.ACOM.HHE. ML:1.8 0.0001147 1.3 AML other m 2021-09-21T01:14:18.03
OX.ACOM.HHN. ML:1.8 9.84E-5 1.38 AML other m 2021-09-21T01:14:19.06
IV.TREG.EHE. ML:2.3 9.76E-5 0.38 AML other m 2021-09-21T01:14:39.67
IV.TREG.EHN. ML:2.2 8.395E-5 1.02 AML other m 2021-09-21T01:14:40.87
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