Earthquake with magnitude of ML 0.8 on date 24-07-2019 and time 23:12:57 (Italy) in region 1 km W Drenchia (UD)

A magnitude ML 0.8 earthquake occured in region: 1 km W Drenchia (UD), on

  • 24-07-2019 21:12:57 (UTC)
  • 24-07-2019 23:12:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.18, 13.61 at 13 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
Drenchia UD 1 115 115
Grimacco UD 3 342 457
Stregna UD 6 356 813
Savogna UD 6 411 1224
San Leonardo UD 9 1129 2353
Pulfero UD 10 962 3315
San Pietro al Natisone UD 11 2171 5486
Torreano UD 14 2139 7625
Cividale del Friuli UD 16 11292 18917
Prepotto UD 18 769 19686
Dolegna del Collio GO 19 370 20056
Moimacco UD 20 1675 21731

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Udine (99169 inhabitants)
60 Km N of Trieste (204420 inhabitants)
77 Km E of Pordenone (51229 inhabitants)
Recent and historical Seismicity
Seismic hazard
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 ( 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 0.8 2019-07-24
46.18 13.61 13 2019-07-24
Sala Sismica INGV-Roma 70856351
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2019-07-24 21:12:57 ± 0.11
Latitude 46.18 ± 0.03
Longitude 13.61 ± 0.04
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 70856351


Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4112
Semi-minor axis of confidence ellipse (meter) 178
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 45
Circular confidence region, given by single value of horizontal uncertainty (meter) 4110
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.02608
Epicentral distance of station farthest from the epicenter (degree) 0.28868
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information


Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 70856351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-24 21:19:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PTCC.HHZ. 2019-07-24T21:13:08.80 0.6 undecidable manual S 323 0.2887 96 -0.15 48
NI.VINO.HHZ. 2019-07-24T21:13:07.62 0.6 undecidable manual S 288 0.2419 98 0.04 49
OX.SABO.HHZ. 2019-07-24T21:13:05.93 0.6 undecidable manual S 175 0.1916 103 -0.17 49
IV.PTCC.HHZ. 2019-07-24T21:13:04.33 0.6 undecidable manual P 323 0.2887 96 0.04 49
NI.VINO.HHZ. 2019-07-24T21:13:03.48 0.6 positive manual P 288 0.2419 98 -0.02 50
OX.SABO.HHZ. 2019-07-24T21:13:02.67 0.1 negative manual P 175 0.1916 103 0.03 100
OX.DRE.HHZ. 2019-07-24T21:13:02.29 0.6 undecidable manual S 101 0.0261 164 -0.11 51
OX.DRE.HHZ. 2019-07-24T21:13:00.70 0.6 undecidable manual P 101 0.0261 164 0.2 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.SABO.HHN. ML:0.7 3.08E-5 0.7 AML other m 2019-07-24T21:13:06.55
NI.VINO.HHE. ML:1.2 7.545E-5 1.7 AML other m 2019-07-24T21:13:07.06
OX.SABO.HHE. ML:0.7 3.265E-5 1.32 AML other m 2019-07-24T21:13:07.28
NI.VINO.HHN. ML:1.2 7.93E-5 1.7 AML other m 2019-07-24T21:13:07.10
IV.PTCC.HHE. ML:0.5 1.54E-5 0.28 AML other m 2019-07-24T21:13:11.33
IV.PTCC.HHN. ML:0.5 1.36E-5 1.24 AML other m 2019-07-24T21:13:11.17
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download