Earthquake with magnitude of ML 0.9 on date 21-09-2021 and time 09:12:08 (Italy) in region 2 km SW Fanna (PN)

A magnitude ML 0.9 earthquake occured in region: 2 km SW Fanna (PN), on

  • 21-09-2021 07:12:08 (UTC)
  • 21-09-2021 09:12:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.177, 12.735 at 14 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
Maniago PN 2 11698 13281
Cavasso Nuovo PN 3 1525 14806
Frisanco PN 4 622 15428
Vajont PN 4 1719 17147
Arba PN 6 1309 18456
Meduno PN 6 1574 20030
Montereale Valcellina PN 6 4433 24463
Sequals PN 7 2200 26663
Andreis PN 10 259 26922
Travesio PN 11 1776 28698
Vivaro PN 12 1352 30050
Tramonti di Sotto PN 13 387 30437
Castelnovo del Friuli PN 13 880 31317
Barcis PN 14 256 31573
Spilimbergo PN 15 12124 43697
Clauzetto PN 15 380 44077
Tramonti di Sopra PN 16 321 44398
San Quirino PN 16 4383 48781
Pinzano al Tagliamento PN 16 1525 50306
Aviano PN 17 9106 59412
San Giorgio della Richinvelda PN 18 4650 64062
Vito d'Asio PN 18 769 64831
Dignano UD 19 2317 67148
Ragogna UD 19 2909 70057
Forgaria nel Friuli UD 19 1786 71843
Claut PN 20 956 72799
San Martino al Tagliamento PN 20 1468 74267

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km N of Pordenone (51229 inhabitants)
41 Km W of Udine (99169 inhabitants)
68 Km NE of Treviso (83731 inhabitants)
88 Km NE of Venezia (263352 inhabitants)
99 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 0.9 2021-09-21
07:12:08
46.1772 12.7347 14 2021-09-21
07:23:14
Sala Sismica INGV-Roma 95688621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-21 07:12:08 ± 0.19
Latitude 46.1772 ± 0.0108
Longitude 12.7347 ± 0.0065
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95688621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1156
Semi-minor axis of confidence ellipse (meter) 376
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 174
Circular confidence region, given by single value of horizontal uncertainty (meter) 1160
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.35703
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 95688621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-21 07:23:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VINO.HHZ. 2021-09-21T07:12:22.10 3.0 undecidable manual P 0
IV.PLRO.HHZ. 2021-09-21T07:12:19.53 3.0 undecidable manual P 0
OX.CIMO.HHZ. 2021-09-21T07:12:18.20 0.1 undecidable manual S 304 0.241 102 0.08 96
OX.MPRI.HHZ. 2021-09-21T07:12:17.00 0.3 undecidable manual S 70 0.1862 109 0.46 67
NI.PALA.HHZ. 2021-09-21T07:12:15.36 0.3 undecidable manual S 63 0.1475 117 -0.13 72
OX.BAD.HHE. 2021-09-21T07:12:15.96 1.0 undecidable manual P 81 0.357 97 -0.01 24
IV.STAL.HHZ. 2021-09-21T07:12:14.03 0.1 undecidable manual S 349 0.0845 138 0.03 100
OX.MLN.HHZ. 2021-09-21T07:12:14.31 0.6 undecidable manual S 252 0.0872 137 0.26 48
OX.CLUD.HHE. 2021-09-21T07:12:14.99 0.1 undecidable manual P 20 0.2977 99 0.03 96
OX.CIMO.HHZ. 2021-09-21T07:12:14.07 0.6 undecidable manual P 304 0.241 102 0.05 48
OX.MPRI.HHZ. 2021-09-21T07:12:13.00 1.0 undecidable manual P 70 0.1862 109 -0.11 24
NI.PALA.HHZ. 2021-09-21T07:12:12.20 0.3 positive manual P 63 0.1475 117 -0.3 70
IV.STAL.HHZ. 2021-09-21T07:12:11.37 0.3 positive manual P 349 0.0845 138 -0.28 71
OX.MLN.HHZ. 2021-09-21T07:12:11.44 1.0 undecidable manual P 252 0.0872 137 -0.23 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.STAL.HHN. ML:1 9.96E-5 0.18 AML other m 2021-09-21T07:12:14.19
IV.STAL.HHE. ML:1 0.000105263105 0.1792 AML other m 2021-09-21T07:12:14.81
IV.STAL.HNE. ML:1.1 0.0001323085 0.24 AML other m 2021-09-21T07:12:14.65
IV.STAL.HNN. ML:1.1 0.0001380652 0.24 AML other m 2021-09-21T07:12:14.18
OX.MLN.HHE. ML:0.5 3.019749E-5 0.1024 AML other m 2021-09-21T07:12:14.77
OX.MLN.HHN. ML:0.5 3.125141E-5 0.32 AML other m 2021-09-21T07:12:15.92
NI.PALA.HHE. ML:1 7.0084195E-5 0.2208 AML other m 2021-09-21T07:12:16.41
NI.PALA.HHN. ML:0.9 6.533628E-5 0.16 AML other m 2021-09-21T07:12:15.95
OX.MPRI.HNE. ML:0.8 3.985315E-5 0.88 AML other m 2021-09-21T07:12:21.28
OX.MPRI.HNN. ML:1.1 7.3798355E-5 0.3584 AML other m 2021-09-21T07:12:21.24
OX.MPRI.HHE. ML:0.7 3.334922E-5 0.24 AML other m 2021-09-21T07:12:17.80
OX.MPRI.HHN. ML:1.1 8.364069E-5 0.3392 AML other m 2021-09-21T07:12:21.41
OX.CIMO.HHE. ML:0.6 1.76019E-5 0.0992 AML other m 2021-09-21T07:12:18.52
OX.CIMO.HHN. ML:0.7 2.3517075E-5 0.1184 AML other m 2021-09-21T07:12:18.52
OX.CIMO.HNN. ML:0.9 4.181653E-5 0.56 AML other m 2021-09-21T07:12:19.78
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