Earthquake with magnitude of ML 1.9 on date 22-09-2021 and time 18:29:57 (UTC) in region 2 km W Arba (PN)

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

  • 22-09-2021 18:29:57 (UTC)
  • 22-09-2021 20:29:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.148, 12.763 at 15 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
Arba PN 2 1309 1309
Fanna PN 5 1583 2892
Vajont PN 5 1719 4611
Maniago PN 5 11698 16309
Cavasso Nuovo PN 5 1525 17834
Sequals PN 5 2200 20034
Frisanco PN 8 622 20656
Meduno PN 8 1574 22230
Montereale Valcellina PN 8 4433 26663
Vivaro PN 8 1352 28015
Travesio PN 10 1776 29791
Spilimbergo PN 12 12124 41915
Castelnovo del Friuli PN 12 880 42795
Andreis PN 13 259 43054
San Quirino PN 14 4383 47437
San Giorgio della Richinvelda PN 14 4650 52087
Pinzano al Tagliamento PN 15 1525 53612
Clauzetto PN 15 380 53992
Dignano UD 15 2317 56309
Tramonti di Sotto PN 16 387 56696
San Martino al Tagliamento PN 16 1468 58164
Aviano PN 16 9106 67270
Barcis PN 16 256 67526
Ragogna UD 17 2909 70435
Vito d'Asio PN 18 769 71204
Forgaria nel Friuli UD 18 1786 72990
Cordenons PN 18 18301 91291
Tramonti di Sopra PN 18 321 91612
Valvasone Arzene PN 18 3988 95600
Roveredo in Piano PN 19 5967 101567
San Daniele del Friuli UD 19 8013 109580
Flaibano UD 19 1156 110736
Zoppola PN 20 8572 119308

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Pordenone (51229 inhabitants)
38 Km W of Udine (99169 inhabitants)
67 Km NE of Treviso (83731 inhabitants)
86 Km NE of Venezia (263352 inhabitants)
96 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.9 2021-09-22
18:29:57
46.1478 12.7632 15 2021-09-22
18:44:19
Sala Sismica INGV-Roma 95754611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-22 18:29:57 ± 0.22
Latitude 46.1478 ± 0.0135
Longitude 12.7632 ± 0.0117
Depth (km) 15 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95754611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1600
Semi-minor axis of confidence ellipse (meter) 454
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) 1600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 174
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.10252
Epicentral distance of station farthest from the epicenter (degree) 0.48114
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 95754611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-22 18:44:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
OX.FUSE.HHZ. 2021-09-22T18:30:09.36 0.6 undecidable manual S 32 0.313 100 0.28 50
OX.CLUD.HHZ. 2021-09-22T18:30:09.68 0.6 undecidable manual S 15 0.3193 100 0.41 48
IT.PNAL.HNE. 2021-09-22T18:30:09.83 0.6 undecidable manual S 275 0.3229 99 0.47 49
OX.CIMO.HHZ. 2021-09-22T18:30:08.03 0.6 undecidable manual S 307 0.2743 102 0.08 53
OX.PLRO.HHZ. 2021-09-22T18:30:06.99 1.0 positive manual P 33 0.4811 95 0.05 25
IV.FVI.HHZ. 2021-09-22T18:30:06.49 0.6 negative manual P 2 0.4488 96 0.1 51
OX.MPRI.HHZ. 2021-09-22T18:30:05.99 0.3 undecidable manual S 59 0.1808 113 0.68 68
IV.FREG.EHE. 2021-09-22T18:30:05.50 0.1 undecidable manual P 246 0.3408 99 0.94 81
NI.PALA.HHZ. 2021-09-22T18:30:04.72 0.6 undecidable manual S 49 0.1475 120 0.29 52
RF.GEPF.HHZ. 2021-09-22T18:30:03.37 0.6 undecidable manual P 64 0.2887 101 -0.32 50
IT.PNAL.HNE. 2021-09-22T18:30:03.96 0.1 undecidable manual P 275 0.3229 99 -0.29 100
OX.MLN.HHZ. 2021-09-22T18:30:03.20 0.6 undecidable manual S 271 0.1025 134 -0.15 53
NI.PURA.HHE. 2021-09-22T18:30:03.83 0.1 undecidable manual P 357 0.2779 102 0.32 100
IV.STAL.HNZ. 2021-09-22T18:30:03.73 0.6 undecidable manual S 342 0.1178 129 0.03 55
OX.FUSE.HHZ. 2021-09-22T18:30:03.52 0.6 positive manual P 32 0.313 100 -0.56 47
OX.CLUD.HHZ. 2021-09-22T18:30:03.78 1.0 negative manual P 15 0.3193 100 -0.42 25
OX.CAE.HHZ. 2021-09-22T18:30:03.37 1.0 negative manual P 238 0.2644 103 0.09 27
OX.BOO.HHE. 2021-09-22T18:30:03.27 0.1 undecidable manual P 53 0.2887 101 -0.4 99
OX.CIMO.HHZ. 2021-09-22T18:30:02.89 0.6 positive manual P 307 0.2743 102 -0.55 47
OX.MPRI.HHZ. 2021-09-22T18:30:01.94 0.6 negative manual P 59 0.1808 113 0.03 54
NI.PALA.HHZ. 2021-09-22T18:30:00.94 0.6 negative manual P 49 0.1475 120 -0.46 50
OX.MLN.HHZ. 2021-09-22T18:30:00.25 1.0 positive manual P 271 0.1025 134 -0.53 24
IV.STAL.HNZ. 2021-09-22T18:30:00.17 0.3 undecidable manual P 342 0.1178 129 -0.81 66
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.MLN.HHE. ML:1.8 0.00064 0.92 AML other m 2021-09-22T18:30:04.48
OX.MLN.HHN. ML:1.8 0.0006685 0.32 AML other m 2021-09-22T18:30:05.41
OX.MPRI.HNE. ML:0 0.000504 0.32 AML other m 2021-09-22T18:30:07.50
OX.MPRI.HHE. ML:0 0.0006565 0.32 AML other m 2021-09-22T18:30:07.51
NI.PALA.HHN. ML:2.1 0.0008865 0.64 AML other m 2021-09-22T18:30:07.25
OX.CIMO.HHN. ML:2 0.000487 0.1 AML other m 2021-09-22T18:30:08.18
OX.CIMO.HHE. ML:1.9 0.000369 0.12 AML other m 2021-09-22T18:30:08.19
OX.CIMO.HNN. ML:2 0.000469 0.12 AML other m 2021-09-22T18:30:08.19
OX.CIMO.HNE. ML:1.9 0.00037 0.12 AML other m 2021-09-22T18:30:08.19
NI.PALA.HHE. ML:2.2 0.001071 0.42 AML other m 2021-09-22T18:30:08.97
OX.CLUD.HHN. ML:1.4 9.965E-5 0.52 AML other m 2021-09-22T18:30:10.41
OX.MPRI.HHN. ML:0 0.001225 1.64 AML other m 2021-09-22T18:30:11.95
OX.MPRI.HNN. ML:0 0.0009395 1.62 AML other m 2021-09-22T18:30:11.94
RF.GEPF.HHN. ML:1.8 0.00026 0.32 AML other m 2021-09-22T18:30:12.17
RF.GEPF.HHE. ML:1.7 0.0002165 1.66 AML other m 2021-09-22T18:30:12.16
OX.CAE.HHE. ML:0 0.0006765 0.42 AML other m 2021-09-22T18:30:12.70
OX.CAE.HHN. ML:0 0.000278 1.56 AML other m 2021-09-22T18:30:12.21
OX.CLUD.HHE. ML:1.5 0.000111 0.82 AML other m 2021-09-22T18:30:14.94
IV.FVI.HHE. ML:1.6 9.24E-5 0.88 AML other m 2021-09-22T18:30:16.66
IV.FVI.HHN. ML:1.6 9.465E-5 0.2 AML other m 2021-09-22T18:30:16.87
OX.PLRO.HHN. ML:2.1 0.0002675 0.24 AML other m 2021-09-22T18:30:17.21
OX.PLRO.HHE. ML:1.9 0.0001925 0.66 AML other m 2021-09-22T18:30:17.95
SI.LUSI.HHE. ML:2 5.655E-5 0.54 AML other m 2021-09-22T18:30:42.53
SI.LUSI.HHN. ML:2.2 8.815E-5 1.4 AML other m 2021-09-22T18:30:44.19
IV.MAGA.HHN. ML:2.2 6.22E-5 1.1 AML other m 2021-09-22T18:30:51.79
IV.MAGA.HHE. ML:2.4 0.0001088 1.62 AML other m 2021-09-22T18:30:54.13
IV.STAL.HHE. ML:2.4 0.002204822 0.3584 AML other m 2021-09-22T18:30:05.29
IV.STAL.HHN. ML:2.3 0.0016682905 0.2432 AML other m 2021-09-22T18:30:03.74
IV.STAL.HNE. ML:2.4 0.0020842425 0.256 AML other m 2021-09-22T18:30:04.44
IV.STAL.HNN. ML:2.4 0.002440952 0.2304 AML other m 2021-09-22T18:30:03.72
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