Earthquake with magnitude of ML 1.8 on date 23-05-2020 and time 23:34:19 (UTC) in region 4 km SE Preone (UD)

A magnitude ML 1.8 earthquake occured in region: 4 km SE Preone (UD), on

  • 23-05-2020 23:34:19 (UTC)
  • 24-05-2020 01:34:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.36, 12.89 at 9 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 7 908 2473
Villa Santina UD 7 2233 4706
Lauco UD 8 729 5435
Raveo UD 8 458 5893
Verzegnis UD 9 863 6756
Ampezzo UD 9 1006 7762
Tramonti di Sopra PN 9 321 8083
Tolmezzo UD 11 10440 18523
Tramonti di Sotto PN 11 387 18910
Cavazzo Carnico UD 12 1052 19962
Ovaro UD 14 1922 21884
Clauzetto PN 15 380 22264
Zuglio UD 15 595 22859
Vito d'Asio PN 16 769 23628
Amaro UD 16 823 24451
Arta Terme UD 16 2171 26622
Forni di Sotto UD 17 600 27222
Comeglians UD 17 516 27738
Forgaria nel Friuli UD 17 1786 29524
Trasaghis UD 17 2227 31751
Sauris UD 18 416 32167
Bordano UD 18 754 32921
Meduno PN 18 1574 34495
Castelnovo del Friuli PN 18 880 35375
Ravascletto UD 18 536 35911
Sutrio UD 18 1332 37243
Travesio PN 19 1776 39019
Prato Carnico UD 19 904 39923
Osoppo UD 19 2936 42859
Cercivento UD 20 679 43538
Venzone UD 20 2117 45655

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km NW of Udine (99169 inhabitants)
49 Km NE of Pordenone (51229 inhabitants)
92 Km NE of Treviso (83731 inhabitants)
Recent and historical seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
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
Bulletin
Rev1000
ML 1.8 2020-05-23
23:34:19
46.36 12.89 9 2020-11-19
12:36:48
Bollettino Sismico Italiano INGV 80002541
Reviewed
Rev100
ML 2.0 2020-05-23
23:34:19
46.37 12.86 5 2020-05-23
23:44:44
Sala Sismica INGV-Roma 79493171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-23 23:34:19 ± 0.06
Latitude 46.36 ± 0.00
Longitude 12.89 ± 0.00
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80002541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 346
Semi-minor axis of confidence ellipse (meter) 258
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 182
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 1.67184
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 21
Type of magnitude ML
Reference to an origin 80002541
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-02 16:57:34

ML:2

Field Value
Value 2
Uncertainty 0.3
Num. used stations 28
Type of magnitude ML
Reference to an origin 79493171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-23 23:44:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.TRN1.HGZ. 2020-05-23T23:36:16.60 3.0 undecidable manual Sg 8.98 0
GU.RRL.HHZ. 2020-05-23T23:35:33.02 3.0 undecidable manual Pn 2.8 0
IT.RMMM.HGZ. 2020-05-23T23:35:30.96 3.0 undecidable manual Pn 1.5 0
IV.EL6.EHZ. 2020-05-23T23:35:07.11 3.0 negative manual Pn -2.95 0
SL.BOJS.BHZ. 2020-05-23T23:34:54.37 3.0 negative manual Pn 0.74 0
IV.MAGA.HHZ. 2020-05-23T23:34:51.89 0.3 undecidable manual P 250 1.6718 38 2.4 0
ST.RONC.EHZ. 2020-05-23T23:34:50.80 0.6 undecidable manual P 257 1.6125 38 2.13 0
ST.ZIAN.EHZ. 2020-05-23T23:34:38.42 0.3 undecidable manual P 265 0.9173 50 1.61 0
OX.ACOM.HHZ. 2020-05-23T23:34:37.29 0.6 undecidable manual S 67 0.4694 50 1 6
OX.SABO.HHZ. 2020-05-23T23:34:32.56 0.3 undecidable manual P 126 0.6403 50 0.49 0
IT.DANT.HNE. 2020-05-23T23:34:32.07 0.3 undecidable manual S 309 0.3238 50 0.11 67
OX.AGOR.HHZ. 2020-05-23T23:34:32.46 0.3 undecidable manual P 262 0.5846 50 1.34 0
OX.MLN.HNE. 2020-05-23T23:34:31.60 0.6 undecidable manual S 221 0.2842 50 0.8 40
OX.BAD.HNE. 2020-05-23T23:34:30.91 0.6 undecidable manual S 118 0.2797 106 0.29 47
OX.DRE.HHZ. 2020-05-23T23:34:30.50 0.3 undecidable manual P 110 0.5585 50 -0.17 0
OX.CIMO.HHZ. 2020-05-23T23:34:30.89 0.6 undecidable manual S 260 0.3085 50 -0.63 41
OX.ACOM.HHZ. 2020-05-23T23:34:29.71 0.3 undecidable manual P 67 0.4694 50 0.55 10
IT.FDS.HGZ. 2020-05-23T23:34:29.19 0.3 undecidable manual S 291 0.2392 108 0.06 75
OX.PLRO.HNZ. 2020-05-23T23:34:29.82 0.6 undecidable manual S 44 0.2581 107 -0.01 50
IV.FVI.HHZ. 2020-05-23T23:34:28.77 0.6 undecidable manual S 343 0.2437 108 -0.51 45
IT.DANT.HNE. 2020-05-23T23:34:27.16 0.3 undecidable manual P 309 0.3238 50 0.5 62
IV.PTCC.HHZ. 2020-05-23T23:34:26.48 0.1 undecidable manual P 82 0.3256 50 -0.22 87
IV.STAL.HHZ. 2020-05-23T23:34:26.08 0.6 undecidable manual S 229 0.1601 117 -0.22 48
IV.FVI.HHZ. 2020-05-23T23:34:25.02 0.1 undecidable manual P 343 0.2437 108 -0.09 99
OX.BOO.HNZ. 2020-05-23T23:34:25.72 0.3 undecidable manual S 107 0.1529 117 -0.36 70
OX.MLN.HNE. 2020-05-23T23:34:25.73 0.1 undecidable manual P 221 0.2842 50 -0.27 95
IT.FDS.HGZ. 2020-05-23T23:34:25.40 0.3 undecidable manual P 291 0.2392 108 0.37 70
OX.MPRI.HHZ. 2020-05-23T23:34:25.68 0.3 undecidable manual S 150 0.1421 119 -0.01 75
OX.CIMO.HHZ. 2020-05-23T23:34:25.98 0.1 undecidable manual P 260 0.3085 50 -0.43 88
OX.PLRO.HNZ. 2020-05-23T23:34:25.60 0.1 negative manual P 44 0.2581 107 0.17 98
OX.BAD.HNE. 2020-05-23T23:34:25.72 0.1 undecidable manual P 118 0.2797 106 -0.16 97
OX.BOO.HNZ. 2020-05-23T23:34:23.31 0.1 negative manual P 107 0.1529 117 0.05 100
OX.CLUD.HHZ. 2020-05-23T23:34:23.98 0.6 undecidable manual S 358 0.0926 131 -0.15 49
OX.FUSE.HHZ. 2020-05-23T23:34:23.99 0.6 undecidable manual S 58 0.0935 130 -0.17 49
IV.STAL.HHZ. 2020-05-23T23:34:23.46 0.1 positive manual P 229 0.1601 117 0.07 100
OX.MPRI.HHZ. 2020-05-23T23:34:23.24 0.1 positive manual P 150 0.1421 119 0.2 97
OX.CLUD.HHZ. 2020-05-23T23:34:22.36 0.1 negative manual P 358 0.0926 131 0.22 97
OX.FUSE.HHZ. 2020-05-23T23:34:22.29 0.1 positive manual P 58 0.0935 130 0.13 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.CLUD.HHN. ML:1.8 0.0009060954 0.2304 AML other m 2020-05-23T23:34:24.68
OX.CLUD.HNN. ML:1.8 0.0008380172 0.2304 AML other m 2020-05-23T23:34:24.68
OX.MPRI.HHN. ML:1.7 0.0005268031 0.1536 AML other m 2020-05-23T23:34:25.75
OX.MPRI.HNN. ML:1.6 0.000407313 0.1408 AML other m 2020-05-23T23:34:25.75
OX.MPRI.HNE. ML:1.7 0.00046788975 0.4608 AML other m 2020-05-23T23:34:25.93
OX.MPRI.HHE. ML:1.8 0.00060203745 0.4352 AML other m 2020-05-23T23:34:25.71
IV.STAL.HNN. ML:2 0.00090251845 0.576 AML other m 2020-05-23T23:34:26.23
IV.STAL.HNE. ML:2.2 0.001245 0.74 AML other m 2020-05-23T23:34:27.26
IV.STAL.HHE. ML:2.2 0.001205 0.16 AML other m 2020-05-23T23:34:27.36
IV.FVI.HHN. ML:1.5 0.0001704495 0.3968 AML other m 2020-05-23T23:34:29.08
IV.FVI.HHE. ML:2 0.00054 0.14 AML other m 2020-05-23T23:34:29.75
OX.CIMO.HHN. ML:1.5 0.0001335 0.38 AML other m 2020-05-23T23:34:31.74
OX.CIMO.HNN. ML:1.5 0.0001395 1.44 AML other m 2020-05-23T23:34:31.75
OX.CIMO.HHE. ML:1.5 0.0001235 0.52 AML other m 2020-05-23T23:34:32.64
OX.CIMO.HNE. ML:1.6 0.0001497 0.52 AML other m 2020-05-23T23:34:32.64
IV.PTCC.HHE. ML:1.5 0.000132 0.82 AML other m 2020-05-23T23:34:33.91
IV.PTCC.HHN. ML:1.6 0.000157 0.22 AML other m 2020-05-23T23:34:33.74
OX.ACOM.HHN. ML:0 0.000481 0.3 AML other m 2020-05-23T23:34:38.51
OX.ACOM.HNN. ML:0 0.000473 0.3 AML other m 2020-05-23T23:34:38.66
OX.ACOM.HHE. ML:0 0.0004335 1.78 AML other m 2020-05-23T23:34:38.91
OX.ACOM.HNE. ML:0 0.000456 0.76 AML other m 2020-05-23T23:34:38.91
IV.CTI.HHE. ML:0 0.000165 1.24 AML other m 2020-05-23T23:34:56.82
ST.DOSS.HHN. ML:0 8.031495E-5 0.704 AML other m 2020-05-23T23:35:05.06
ST.DOSS.HHE. ML:0 6.447457E-5 1.1392 AML other m 2020-05-23T23:35:05.72
SI.LUSI.HHN. ML:0 0.0001285 0.78 AML other m 2020-05-23T23:35:10.03
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in miniseed + resp format Download