Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 21-09-2021 and time 04:49:51 (Italy) in region 2 km SW Fanna (PN)

A magnitude ML 1.9 earthquake occured in region: 2 km SW Fanna (PN), on

  • 21-09-2021 02:49:51 (UTC)
  • 21-09-2021 04:49:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.1730, 12.7460 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
Fanna PN 2 1583 1583
Maniago PN 3 11698 13281
Cavasso Nuovo PN 3 1525 14806
Arba PN 5 1309 16115
Vajont PN 5 1719 17834
Frisanco PN 5 622 18456
Meduno PN 6 1574 20030
Sequals PN 6 2200 22230
Montereale Valcellina PN 7 4433 26663
Travesio PN 10 1776 28439
Andreis PN 11 259 28698
Vivaro PN 11 1352 30050
Castelnovo del Friuli PN 13 880 30930
Tramonti di Sotto PN 13 387 31317
Spilimbergo PN 14 12124 43441
Barcis PN 14 256 43697
Clauzetto PN 15 380 44077
Pinzano al Tagliamento PN 16 1525 45602
Tramonti di Sopra PN 16 321 45923
San Quirino PN 16 4383 50306
Aviano PN 17 9106 59412
San Giorgio della Richinvelda PN 17 4650 64062
Dignano UD 18 2317 66379
Vito d'Asio PN 18 769 67148
Ragogna UD 18 2909 70057
Forgaria nel Friuli UD 18 1786 71843
San Martino al Tagliamento PN 19 1468 73311

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km N of Pordenone (51229 inhabitants)
40 Km W of Udine (99169 inhabitants)
68 Km NE of Treviso (83731 inhabitants)
88 Km NE of Venezia (263352 inhabitants)
98 Km NW of Trieste (204420 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 1.9 2021-09-21
02:49:51		 46.173 12.7463 11 2022-03-30
13:04:25		 Bollettino Sismico Italiano INGV 99257621
Reviewed
Rev100 		ML 1.9 2021-09-21
02:49:51		 46.1705 12.7543 10 2021-09-21
03:11:04		 Sala Sismica INGV-Roma 95683231
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-21 02:49:51 ± 0.11
Latitude 46.1730 ± 0.0072
Longitude 12.7463 ± 0.0065
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99257621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 829
Semi-minor axis of confidence ellipse (meter) 135
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 336
Circular confidence region, given by single value of horizontal uncertainty (meter) 830.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.09083
Epicentral distance of station farthest from the epicenter (degree) 0.89572
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 95683231
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-21 03:11:04

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 29
Type of magnitude ML
Reference to an origin 99257621
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-03 10:45:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
NI.DST2.HNZ. 2021-09-21T02:50:09.68 0.6 undecidable manual P 125 99.4227 50 1.1 30
OX.PLRO.HHE. 2021-09-21T02:50:09.34 0.6 undecidable manual S 36 51.8037 50 1.15 32
MN.TRI.HHZ. 2021-09-21T02:50:08.89 0.6 undecidable manual P 123 93.8394 50 1.16 29
OX.VARN.HHZ. 2021-09-21T02:50:08.84 0.3 undecidable manual S 248 53.3022 50 0.27 67
IV.FVI.HHZ. 2021-09-21T02:50:07.76 0.3 undecidable manual S 3 47.0196 50 0.85 56
NI.VINO.HHZ. 2021-09-21T02:50:05.30 0.3 undecidable manual S 77 41.625 50 -0.16 70
IV.FREG.EHZ. 2021-09-21T02:50:04.76 0.3 undecidable manual S 242 37.8288 50 0.3 68
OX.SABO.HNZ. 2021-09-21T02:50:04.79 0.3 undecidable manual P 106 71.2731 50 0.54 60
OX.FUSE.HHZ. 2021-09-21T02:50:03.60 0.3 undecidable manual S 36 33.1446 50 0.41 67
IT.PNAL.HNE. 2021-09-21T02:50:03.40 0.3 undecidable manual S 270 34.3434 50 -0.13 71
OX.DRE.HNZ. 2021-09-21T02:50:03.55 0.6 undecidable manual P 90 69.0753 50 -0.35 42
OX.CLUD.HHZ. 2021-09-21T02:50:03.30 0.6 undecidable manual S 18 33.1446 50 0.1 48
RF.GEPF.HHZ. 2021-09-21T02:50:03.30 0.3 undecidable manual S 69 32.1456 50 0.36 68
OX.CAE.HHZ. 2021-09-21T02:50:03.30 0.6 undecidable manual S 233 29.9478 50 0.97 36
OX.BOO.HHE. 2021-09-21T02:50:02.40 0.3 undecidable manual S 59 31.5462 50 -0.36 68
NI.PURA.HHE. 2021-09-21T02:50:02.40 0.3 undecidable manual S 359 28.0497 50 0.56 65
OX.CIMO.HHZ. 2021-09-21T02:50:01.40 0.3 undecidable manual S 304 27.75 50 -0.37 68
OX.VARN.HHZ. 2021-09-21T02:50:01.14 0.3 undecidable manual P 248 53.3022 50 -0.33 66
OX.PLRO.HHE. 2021-09-21T02:50:00.97 0.6 undecidable manual P 36 51.8037 50 -0.28 45
IV.FVI.HHZ. 2021-09-21T02:50:00.46 0.1 undecidable manual P 3 47.0196 50 -0.05 94
OX.MPRI.HHZ. 2021-09-21T02:50:00.20 0.3 undecidable manual S 68 19.9689 118 0.59 65
IV.FREG.EHZ. 2021-09-21T02:49:59.19 0.6 undecidable manual P 242 37.8288 50 0.09 47
NI.VINO.HHZ. 2021-09-21T02:49:58.97 0.3 undecidable manual P 77 41.625 50 -0.7 60
OX.CLUD.HHZ. 2021-09-21T02:49:58.03 0.3 undecidable manual P 18 33.1446 50 -0.34 68
OX.BAD.HNE. 2021-09-21T02:49:58.54 0.3 undecidable manual P 80 38.8278 50 -0.7 60
RF.GEPF.HHZ. 2021-09-21T02:49:57.64 0.6 undecidable manual P 69 32.1456 50 -0.58 43
NI.PURA.HHE. 2021-09-21T02:49:57.09 0.6 undecidable manual P 359 28.0497 50 -0.49 44
IT.PNAL.HNE. 2021-09-21T02:49:57.92 0.6 undecidable manual P 270 34.3434 50 -0.64 41
OX.MLN.HHZ. 2021-09-21T02:49:57.20 0.3 undecidable manual S 255 10.3785 135 0.3 71
OX.BOO.HHE. 2021-09-21T02:49:57.61 0.3 undecidable manual P 59 31.5462 50 -0.51 66
OX.CIMO.HHZ. 2021-09-21T02:49:57.21 0.3 undecidable manual P 304 27.75 50 -0.33 69
IV.STAL.HHZ. 2021-09-21T02:49:57.10 0.3 undecidable manual S 344 10.0788 136 0.29 72
OX.CAE.HHZ. 2021-09-21T02:49:57.75 0.3 undecidable manual P 233 29.9478 50 -0.12 72
OX.FUSE.HHZ. 2021-09-21T02:49:57.66 0.6 undecidable manual P 36 33.1446 50 -0.7 40
OX.MPRI.HHZ. 2021-09-21T02:49:56.09 0.3 undecidable manual P 68 19.9689 118 -0.2 72
IV.STAL.HHZ. 2021-09-21T02:49:54.49 0.1 undecidable manual P 344 10.0788 136 -0.19 98
OX.MLN.HHZ. 2021-09-21T02:49:54.66 0.1 undecidable manual P 255 10.3785 135 -0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.STAL.HNN. ML:2.3 0.00233 0.26 AML other m 2021-09-21T02:49:57.42
IV.STAL.HHN. ML:2.1 0.001745 0.2 AML other m 2021-09-21T02:49:57.47
IV.STAL.HNE. ML:2.2 0.0022 0.22 AML other m 2021-09-21T02:49:58.13
OX.MLN.HHE. ML:1.7 0.0006490000000000001 1.08 AML other m 2021-09-21T02:49:58.74
IV.STAL.HHE. ML:2.1 0.001717292 0.2 AML other m 2021-09-21T02:49:58.16
OX.MLN.HHN. ML:1.7 0.0005505 0.28 AML other m 2021-09-21T02:49:59.13
OX.MPRI.HNE. ML:1.9 0.000557 0.32 AML other m 2021-09-21T02:50:01.20
OX.MPRI.HHE. ML:2.0 0.0007325 0.32 AML other m 2021-09-21T02:50:01.21
OX.CIMO.HNE. ML:1.8 0.000301 0.1 AML other m 2021-09-21T02:50:01.89
OX.CIMO.HHN. ML:1.9 0.000377 0.12 AML other m 2021-09-21T02:50:01.89
OX.CIMO.HHE. ML:1.8 0.000315 0.1 AML other m 2021-09-21T02:50:01.89
OX.CIMO.HNN. ML:1.8 0.000365 0.12 AML other m 2021-09-21T02:50:01.89
OX.CLUD.HHN. ML:1.3 0.00007885 1.56 AML other m 2021-09-21T02:50:04.85
OX.MPRI.HNN. ML:2.2 0.0010975 0.34 AML other m 2021-09-21T02:50:04.66
OX.MPRI.HHN. ML:2.3 0.001435 0.36 AML other m 2021-09-21T02:50:04.66
RF.GEPF.HHE. ML:1.7 0.000226 0.28 AML other m 2021-09-21T02:50:05.67
RF.GEPF.HHN. ML:1.8 0.00026249999999999993 0.28 AML other m 2021-09-21T02:50:05.70
OX.CAE.HHE. ML:2.1 0.0006525000000000001 0.42 AML other m 2021-09-21T02:50:06.42
OX.CAE.HHN. ML:1.8 0.00028649999999999997 0.52 AML other m 2021-09-21T02:50:06.96
NI.VINO.HHN. ML:1.6 0.00011350000000000001 0.34 AML other m 2021-09-21T02:50:08.31
OX.CLUD.HHE. ML:1.3 0.0000892 0.92 AML other m 2021-09-21T02:50:08.65
NI.VINO.HHE. ML:1.6 0.0001225 1.62 AML other m 2021-09-21T02:50:08.98
IV.FREG.EHE. ML:2.2 0.0006945 0.7 AML other m 2021-09-21T02:50:10.78
IV.FVI.HHN. ML:1.6 0.00009955 0.2 AML other m 2021-09-21T02:50:10.57
IV.FREG.EHN. ML:2.1 0.000437 0.78 AML other m 2021-09-21T02:50:10.91
IV.FVI.HHE. ML:1.5 0.00008690000000000001 0.72 AML other m 2021-09-21T02:50:11.39
OX.VARN.HHN. ML:1.9 0.000207 0.72 AML other m 2021-09-21T02:50:14.49
OX.VARN.HHE. ML:2.0 0.00023199999999999997 1.4 AML other m 2021-09-21T02:50:14.98
OX.VARN.HNN. ML:1.9 0.0002067797 0.2992 AML other m 2021-09-21T02:50:13.52
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