Earthquake with magnitude of ML 1.5 on date 15-10-2021 and time 13:58:56 (Italy) in region Confine Italia Slovenia (SLOVENIA)

A magnitude ML 1.5 earthquake occured in region: Confine Italia Slovenia (SLOVENIA), on

  • 15-10-2021 11:58:56 (UTC)
  • 15-10-2021 13:58:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.04, 13.729 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
San Floriano del Collio GO 13 796 796
Gorizia GO 14 34844 35640
Stregna UD 15 356 35996
Grimacco UD 17 342 36338
Drenchia UD 17 115 36453
Mossa GO 18 1584 38037
San Leonardo UD 18 1129 39166
Dolegna del Collio GO 19 370 39536
Prepotto UD 19 769 40305
Savogna d'Isonzo GO 20 1717 42022
San Lorenzo Isontino GO 20 1564 43586
Capriva del Friuli GO 20 1713 45299

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Udine (99169 inhabitants)
44 Km N of Trieste (204420 inhabitants)
83 Km E of Pordenone (51229 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.5 2021-10-15
11:58:56
46.0402 13.7293 10 2021-10-15
12:21:26
Sala Sismica INGV-Roma 96611021
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-15 11:58:56 ± 0.19
Latitude 46.0402 ± 0.0054
Longitude 13.7293 ± 0.0168
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96611021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1320
Semi-minor axis of confidence ellipse (meter) 550
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 278
Circular confidence region, given by single value of horizontal uncertainty (meter) 1320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 256
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.44966
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 96611021
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-15 12:21:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CH.FUORN.HHZ. 2021-10-15T11:59:19.21 3.0 undecidable manual Pg 8.78 0
IV.FIR.HHZ. 2021-10-15T11:59:19.36 3.0 undecidable manual Sg 3.62 0
NI.VINO.HHZ. 2021-10-15T11:59:10.34 0.3 undecidable manual S 304 0.3804 50 0.01 71
GU.ROTM.HHZ. 2021-10-15T11:59:06.84 3.0 undecidable manual Pg 3.01 0
IV.PTCC.HHZ. 2021-10-15T11:59:05.83 0.1 undecidable manual P 325 0.4497 50 0.21 90
SI.ROSI.HHZ. 2021-10-15T11:59:04.29 3.0 negative manual Pn -5.34 0
NI.VINO.HHZ. 2021-10-15T11:59:04.36 0.3 undecidable manual P 304 0.3804 50 -0.07 70
IV.RIBO.EHZ.01 2021-10-15T11:59:01.02 3.0 undecidable manual Sg -3.88 0
OX.SABO.HHZ. 2021-10-15T11:59:01.09 0.3 undecidable manual S 232 0.0845 137 -0.04 75
OX.DRE.HHZ. 2021-10-15T11:59:00.02 0.1 positive manual P 336 0.1457 122 -0.15 96
OX.SABO.HHZ. 2021-10-15T11:58:59.14 0.1 undecidable manual P 232 0.0845 137 0.03 100
IV.CAFI.HNZ. 2021-10-15T11:58:47.35 3.0 undecidable manual Sn -9.99 0
IV.ISPIC.EHZ. 2021-10-15T11:58:47.32 3.0 undecidable manual Pg 2.69 0
IV.ATFO.HHZ. 2021-10-15T11:58:46.51 3.0 undecidable manual Sg -7.34 0
IV.MGR.HHZ. 2021-10-15T11:58:17.29 3.0 undecidable manual Sg -6.34 0
IV.RIBO.EHZ.01 2021-10-15T11:58:16.90 3.0 negative manual Pn -9.8 0
IV.CDRU.HHZ. 2021-10-15T11:58:10.64 3.0 undecidable manual S -2.66 0
OT.OT15.EHZ. 2021-10-15T11:58:07.16 3.0 undecidable manual Pg -4.31 0
IT.GLNS.HNZ. 2021-10-15T11:58:07.62 3.0 undecidable manual Sg -3.64 0
IX.COL3.HHZ.02 2021-10-15T11:58:04.11 3.0 undecidable manual Sg -6.01 0
IV.CDRU.HHZ. 2021-10-15T11:57:50.58 3.0 undecidable manual Pg -7.13 0
IV.MCRV.HHZ. 2021-10-15T11:57:49.27 3.0 undecidable manual P -3.8 0
IV.PAOL.HHZ. 2021-10-15T11:57:49.65 3.0 undecidable manual S 3.62 0
IV.POFI.HHZ. 2021-10-15T11:57:42.64 3.0 undecidable manual P -9.99 0
IV.RNI2.HHZ. 2021-10-15T11:57:41.57 3.0 undecidable manual P -9.14 0
IV.SGG.HHZ. 2021-10-15T11:57:37.59 3.0 undecidable manual P -6.26 0
IV.VITU.HHZ. 2021-10-15T11:57:37.43 3.0 undecidable manual P -5.81 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.SABO.HHE. ML:1.1 0.0001645 0.84 AML other m 2021-10-15T11:59:01.33
OX.SABO.HHN. ML:1.4 0.0003145 1.32 AML other m 2021-10-15T11:59:02.76
OX.SABO.HNN. ML:2 0.001255 1.32 AML other m 2021-10-15T11:59:02.76
OX.SABO.HNE. ML:1.6 0.000538 0.18 AML other m 2021-10-15T11:59:02.27
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