Earthquake with magnitude of ML 1.1 on date 21-08-2019 and time 12:46:50 (Italy) in region 7 km W Tramonti di Sopra (PN)

A magnitude ML 1.1 earthquake occured in region: 7 km W Tramonti di Sopra (PN), on

  • 21-08-2019 10:46:50 (UTC)
  • 21-08-2019 12:46:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.31, 12.7 at 9 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 Sopra PN 7 321 321
Tramonti di Sotto PN 8 387 708
Forni di Sotto UD 9 600 1308
Frisanco PN 11 622 1930
Meduno PN 13 1574 3504
Ampezzo UD 14 1006 4510
Socchieve UD 14 908 5418
Andreis PN 14 259 5677
Cavasso Nuovo PN 14 1525 7202
Fanna PN 15 1583 8785
Claut PN 15 956 9741
Forni di Sopra UD 16 993 10734
Maniago PN 16 11698 22432
Preone UD 16 246 22678
Sauris UD 17 416 23094
Barcis PN 17 256 23350
Enemonzo UD 18 1319 24669
Montereale Valcellina PN 18 4433 29102
Vajont PN 18 1719 30821
Travesio PN 18 1776 32597
Raveo UD 19 458 33055
Clauzetto PN 19 380 33435
Sequals PN 19 2200 35635
Arba PN 20 1309 36944
Castelnovo del Friuli PN 20 880 37824

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km N of Pordenone (51229 inhabitants)
50 Km NW of Udine (99169 inhabitants)
80 Km NE of Treviso (83731 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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
Rev 100 ML 1.1 2019-08-21
10:46:50
46.31 12.7 9 2019-08-21
10:52:09
Sala Sismica INGV-Roma 71675101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-21 10:46:50 ± 0.07
Latitude 46.31 ± 0.01
Longitude 12.70 ± 0.00
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71675101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 528
Semi-minor axis of confidence ellipse (meter) 326
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 181
Circular confidence region, given by single value of horizontal uncertainty (meter) 530
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 101
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.30847
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 71675101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-21 10:52:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VBKN.HHZ. 2019-08-21T10:48:38.16 3.0 undecidable manual Sn -9.33 0
GU.ENR.HHZ. 2019-08-21T10:48:27.92 3.0 undecidable manual Sn -8.6 0
IV.SPS2.HHZ. 2019-08-21T10:48:14.01 3.0 positive manual Pn -2.25 0
IV.MGAB.HHZ. 2019-08-21T10:48:04.47 3.0 undecidable manual Sg 5.65 0
GU.RNCA.HHZ. 2019-08-21T10:48:02.72 3.0 undecidable manual Sn -6.66 0
IV.MDI.HHZ. 2019-08-21T10:47:54.50 3.0 undecidable manual Sg 4.92 0
IV.POFI.HHZ. 2019-08-21T10:47:50.69 3.0 undecidable manual Pg 12.54 0
IV.MTMR.EHZ. 2019-08-21T10:47:48.53 3.0 undecidable manual Pn -2.43 0
IV.BARO.EHZ. 2019-08-21T10:47:24.92 3.0 undecidable manual Pn -7.69 0
IV.OSSC.HHZ. 2019-08-21T10:47:16.35 3.0 negative manual Pn -3.57 0
IT.VALS.HNZ. 2019-08-21T10:47:15.11 3.0 undecidable manual Sg -2.58 0
OX.ZOU2.HHZ. 2019-08-21T10:47:02.67 0.3 undecidable manual S 37 0.3085 50 0.04 71
IV.FVI.HHZ. 2019-08-21T10:47:01.92 0.3 undecidable manual S 11 0.2887 50 -0.12 70
OX.CLUD.HHZ. 2019-08-21T10:46:58.58 0.3 undecidable manual S 41 0.1898 114 -0.01 73
OX.CIMO.HHZ. 2019-08-21T10:46:58.01 0.1 undecidable manual S 270 0.1772 115 -0.15 95
IV.FVI.HHZ. 2019-08-21T10:46:57.16 0.1 undecidable manual P 11 0.2887 50 -0.06 95
NI.PALA.HHZ. 2019-08-21T10:46:57.62 0.1 undecidable manual S 114 0.1682 116 -0.2 95
OX.ZOU2.HHZ. 2019-08-21T10:46:57.68 0.3 undecidable manual P 37 0.3085 50 0.12 70
OX.CIMO.HHZ. 2019-08-21T10:46:55.13 0.6 negative manual P 270 0.1772 115 0.15 48
OX.CLUD.HHZ. 2019-08-21T10:46:55.31 0.1 undecidable manual P 41 0.1898 114 0.09 96
NI.PALA.HHZ. 2019-08-21T10:46:54.82 0.1 undecidable manual P 114 0.1682 116 0.04 98
IV.STAL.HHZ. 2019-08-21T10:46:54.37 0.1 undecidable manual S 174 0.0531 147 -0.04 100
IV.STAL.HHZ. 2019-08-21T10:46:53.29 0.6 undecidable manual P 174 0.0531 147 0.48 46
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.STAL.HNN. ML:1.4 0.0003825 0.24 AML other m 2019-08-21T10:46:54.69
IV.STAL.HHE. ML:1.2 0.0002395 0.74 AML other m 2019-08-21T10:46:54.39
IV.STAL.HHN. ML:1.3 0.000339 0.16 AML other m 2019-08-21T10:46:54.89
IV.STAL.HNE. ML:1.2 0.0002775 0.38 AML other m 2019-08-21T10:46:55.45
IV.FVI.HHN. ML:0.5 1.537E-5 0.24 AML other m 2019-08-21T10:47:02.35
IV.FVI.HHE. ML:0.6 1.845E-5 0.42 AML other m 2019-08-21T10:47:02.86
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download