Earthquake with magnitude of ML 0.5 on date 09-09-2021 and time 12:23:55 (Italy) in region 9 km E Tramonti di Sopra (PN)

A magnitude ML 0.5 earthquake occured in region: 9 km E Tramonti di Sopra (PN), on

  • 09-09-2021 10:23:55 (UTC)
  • 09-09-2021 12:23:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.312, 12.902 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
Tramonti di Sotto PN 9 387 387
Tramonti di Sopra PN 9 321 708
Clauzetto PN 9 380 1088
Preone UD 10 246 1334
Vito d'Asio PN 10 769 2103
Forgaria nel Friuli UD 11 1786 3889
Enemonzo UD 11 1319 5208
Verzegnis UD 11 863 6071
Villa Santina UD 12 2233 8304
Socchieve UD 12 908 9212
Castelnovo del Friuli PN 12 880 10092
Cavazzo Carnico UD 12 1052 11144
Lauco UD 13 729 11873
Travesio PN 13 1776 13649
Tolmezzo UD 14 10440 24089
Meduno PN 14 1574 25663
Trasaghis UD 14 2227 27890
Raveo UD 14 458 28348
Ampezzo UD 14 1006 29354
Pinzano al Tagliamento PN 15 1525 30879
Osoppo UD 15 2936 33815
Bordano UD 16 754 34569
Ragogna UD 16 2909 37478
Amaro UD 16 823 38301
Cavasso Nuovo PN 17 1525 39826
Sequals PN 17 2200 42026
Frisanco PN 18 622 42648
Fanna PN 18 1583 44231
Venzone UD 18 2117 46348
Gemona del Friuli UD 19 10964 57312
San Daniele del Friuli UD 19 8013 65325
Zuglio UD 19 595 65920
Majano UD 19 5945 71865
Ovaro UD 19 1922 73787
Forni di Sotto UD 20 600 74387

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NW of Udine (99169 inhabitants)
44 Km NE of Pordenone (51229 inhabitants)
88 Km NE of Treviso (83731 inhabitants)
100 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 0.5 2021-09-09
10:23:55
46.3125 12.9022 11 2021-09-09
10:36:42
Sala Sismica INGV-Roma 95231661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-09 10:23:55 ± 0.08
Latitude 46.3125 ± 0.0036
Longitude 12.9022 ± 0.0091
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 95231661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 689
Semi-minor axis of confidence ellipse (meter) 284
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
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) 109
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.06925
Epicentral distance of station farthest from the epicenter (degree) 0.2644
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 95231661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-09 10:36:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
NI.VINO.HHZ. 2021-09-09T10:24:06.08 0.3 undecidable manual S 103 0.2644 50 0 73
OX.CLUD.HHZ. 2021-09-09T10:24:02.32 0.3 undecidable manual S 354 0.1448 124 -0.1 73
NI.VINO.HHZ. 2021-09-09T10:24:01.64 0.1 undecidable manual P 103 0.2644 50 -0.06 96
NI.PALA.HHZ. 2021-09-09T10:24:00.25 0.1 undecidable manual S 167 0.0692 144 -0.04 100
OX.MPRI.HHZ. 2021-09-09T10:24:00.73 0.6 undecidable manual S 140 0.0926 136 -0.14 49
OX.CLUD.HHZ. 2021-09-09T10:23:59.70 0.1 undecidable manual P 354 0.1448 124 0.11 97
IV.STAL.HHZ. 2021-09-09T10:23:59.40 0.6 undecidable manual P 249 0.1421 124 -0.14 48
NI.PALA.HHZ. 2021-09-09T10:23:58.52 0.3 undecidable manual P 167 0.0692 144 0.17 73
OX.MPRI.HHZ. 2021-09-09T10:23:58.81 0.3 positive manual P 140 0.0926 136 0.12 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
NI.PALA.HHE. ML:0.5 4.065E-5 0.88 AML other m 2021-09-09T10:24:00.50
OX.MPRI.HHE. ML:0.7 6.615E-5 1.82 AML other m 2021-09-09T10:24:00.91
OX.MPRI.HHN. ML:0.8 6.805E-5 0.56 AML other m 2021-09-09T10:24:01.28
IV.STAL.HHN. ML:0.2 1.685E-5 0.6 AML other m 2021-09-09T10:24:02.52
NI.PALA.HHN. ML:0.5 3.91E-5 0.86 AML other m 2021-09-09T10:24:02.58
IV.STAL.HHE. ML:0 1.19E-5 0.8 AML other m 2021-09-09T10:24:03.80
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