INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.0 on date 21-02-2019 and time 21:12:54 (UTC) in region 4 km S Preone (UD)

A magnitude ML 1.0 earthquake occured in region: 4 km S Preone (UD), on

  • 21-02-2019 21:12:54 (UTC)
  • 21-02-2019 22:12:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.36, 12.88 at 10 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
Preone UD 4 246 246
Enemonzo UD 5 1319 1565
Socchieve UD 6 908 2473
Villa Santina UD 7 2233 4706
Raveo UD 8 458 5164
Lauco UD 8 729 5893
Ampezzo UD 9 1006 6899
Tramonti di Sopra PN 9 321 7220
Verzegnis UD 10 863 8083
Tramonti di Sotto PN 11 387 8470
Tolmezzo UD 12 10440 18910
Cavazzo Carnico UD 13 1052 19962
Ovaro UD 14 1922 21884
Clauzetto PN 15 380 22264
Vito d'Asio PN 16 769 23033
Zuglio UD 16 595 23628
Forni di Sotto UD 16 600 24228
Comeglians UD 17 516 24744
Arta Terme UD 17 2171 26915
Amaro UD 17 823 27738
Sauris UD 17 416 28154
Forgaria nel Friuli UD 17 1786 29940
Meduno PN 18 1574 31514
Trasaghis UD 18 2227 33741
Castelnovo del Friuli PN 18 880 34621
Ravascletto UD 18 536 35157
Prato Carnico UD 18 904 36061
Travesio PN 19 1776 37837
Bordano UD 19 754 38591
Sutrio UD 19 1332 39923
Osoppo UD 20 2936 42859

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km NW of Udine (99169 inhabitants)
48 Km NE of Pordenone (51229 inhabitants)
91 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 1.0 2019-02-21
21:12:54
46.36 12.88 10 2019-02-21
21:22:33
Sala Sismica INGV-Roma 65770641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-02-21 21:12:54 ± 0.07
Latitude 46.36 ± 0.00
Longitude 12.88 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 65770641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 523
Semi-minor axis of confidence ellipse (meter) 224
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 74
Circular confidence region, given by single value of horizontal uncertainty (meter) 520
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 103
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.09263
Epicentral distance of station farthest from the epicenter (degree) 0.30127
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 65770641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-02-21 21:22:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
NI.VINO.HHZ. 2019-02-21T21:13:06.29 0.3 undecidable manual S 112 0.2977 50 0.19 70
OX.CIMO.HHZ. 2019-02-21T21:13:06.04 0.1 undecidable manual S 260 0.3013 50 -0.17 94
OX.ZOU2.HHZ. 2019-02-21T21:13:03.08 0.1 undecidable manual S 19 0.2059 114 -0.15 96
OX.CIMO.HHZ. 2019-02-21T21:13:01.40 0.1 undecidable manual P 260 0.3013 50 0.1 96
NI.VINO.HHZ. 2019-02-21T21:13:00.94 0.1 undecidable manual P 112 0.2977 50 -0.29 92
NI.PALA.HHE. 2019-02-21T21:13:00.44 0.1 undecidable manual S 164 0.1241 126 -0.05 100
OX.MPRI.HHZ. 2019-02-21T21:13:00.91 0.1 undecidable manual S 148 0.1457 122 -0.28 95
RF.GEPF.HHZ. 2019-02-21T21:12:59.59 0.1 undecidable manual P 116 0.2023 114 0.08 98
OX.CLUD.HHZ. 2019-02-21T21:12:59.39 0.1 undecidable manual S 3 0.0926 134 -0.18 98
OX.ZOU2.HHZ. 2019-02-21T21:12:59.69 0.1 undecidable manual P 19 0.2059 114 0.11 97
NI.PALA.HHE. 2019-02-21T21:12:58.25 0.1 undecidable manual P 164 0.1241 126 0.26 96
OX.MPRI.HHZ. 2019-02-21T21:12:58.50 0.1 undecidable manual P 148 0.1457 122 0.1 99
OX.CLUD.HHZ. 2019-02-21T21:12:57.77 0.1 undecidable manual P 3 0.0926 134 0.31 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.CLUD.HHE. ML:1 0.000123 0.5 AML other m 2019-02-21T21:12:59.60
OX.CLUD.HHN. ML:0.7 6.525E-5 0.54 AML other m 2019-02-21T21:12:59.64
OX.MPRI.HHN. ML:1.1 0.00010575 0.28 AML other m 2019-02-21T21:13:02.43
OX.MPRI.HHE. ML:1 8.555E-5 0.7 AML other m 2019-02-21T21:13:02.49
OX.ZOU2.HHE. ML:1.1 8.47E-5 0.3 AML other m 2019-02-21T21:13:03.32
OX.ZOU2.HHN. ML:1 6.28E-5 0.68 AML other m 2019-02-21T21:13:03.26
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