Earthquake with magnitude of ML 1.4 on date 16-04-2023 and time 07:33:17 (Italy) in region 1 km E San Pietro al Natisone (UD)

A magnitude ML 1.4 earthquake occured in region: 1 km E San Pietro al Natisone (UD), on

  • 16-04-2023 05:33:17 (UTC)
  • 16-04-2023 07:33:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 46.1290, 13.4990 at 12 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
San Pietro al Natisone UD 1 2171 2171
San Leonardo UD 2 1129 3300
Savogna UD 5 411 3711
Torreano UD 5 2139 5850
Pulfero UD 5 962 6812
Stregna UD 6 356 7168
Cividale del Friuli UD 6 11292 18460
Grimacco UD 8 342 18802
Prepotto UD 9 769 19571
Moimacco UD 10 1675 21246
Dolegna del Collio GO 11 370 21616
Drenchia UD 11 115 21731
Premariacco UD 11 4163 25894
Faedis UD 12 2945 28839
Remanzacco UD 14 6185 35024
Corno di Rosazzo UD 15 3219 38243
Povoletto UD 15 5471 43714
Attimis UD 16 1805 45519
Manzano UD 18 6455 51974
San Floriano del Collio GO 18 796 52770
San Giovanni al Natisone UD 18 6197 58967
Taipana UD 18 636 59603
Buttrio UD 18 4074 63677
Cormons GO 19 7414 71091
Pradamano UD 19 3574 74665
Nimis UD 20 2740 77405
Reana del Rojale UD 20 4966 82371

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Udine (99169 inhabitants)
57 Km NW of Trieste (204420 inhabitants)
68 Km E of Pordenone (51229 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 1.4 2023-04-16
05:33:17
46.1288 13.4988 12 2024-03-01
17:18:20
Bollettino Sismico Italiano INGV 124830421
Reviewed
Rev100
ML 1.4 2023-04-16
05:33:17
46.1307 13.4943 14 2023-04-16
05:38:06
Sala Sismica INGV-Roma 116425531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-16 05:33:17 ± 0.14
Latitude 46.1288 ± 0.0054
Longitude 13.4988 ± 0.0065
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 124830421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 571
Semi-minor axis of confidence ellipse (meter) 360
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 34
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 155
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
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) 0.11062
Epicentral distance of station farthest from the epicenter (degree) 0.48473
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.5
Num. used stations 22
Type of magnitude ML
Reference to an origin 116425531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-16 05:38:06

ML:1.4

Field Value
Value 1.4
Uncertainty 0.4
Num. used stations 18
Type of magnitude ML
Reference to an origin 124830421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-24 13:36:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OX.PLRO.HHZ. 2023-04-16T05:33:34.54 0.6 undecidable manual S 330 53.8017 92 0.59 41
OX.ACOM.HHZ. 2023-04-16T05:33:32.52 0.6 undecidable manual S 1 46.5201 92 0.52 43
OX.BOO.HNE. 2023-04-16T05:33:29.74 0.6 undecidable manual S 305 37.3293 93 0.19 47
IV.PTCC.HHZ. 2023-04-16T05:33:28.00 0.6 undecidable manual S 340 32.8449 93 -0.36 45
OX.PRED.HHE. 2023-04-16T05:33:28.83 0.6 undecidable manual S 8 35.2425 93 -0.16 47
OX.PLRO.HHZ. 2023-04-16T05:33:27.01 0.3 undecidable manual P 330 53.8017 92 0.17 69
NI.VINO.HHZ. 2023-04-16T05:33:25.48 0.6 undecidable manual S 309 22.0668 97 -0.01 50
OX.BAD.HHE. 2023-04-16T05:33:25.77 0.6 undecidable manual S 301 22.755 97 0.08 49
OX.ACOM.HHZ. 2023-04-16T05:33:25.79 0.1 undecidable manual P 1 46.5201 92 0.07 95
OX.BOO.HNE. 2023-04-16T05:33:24.26 0.3 undecidable manual P 305 37.3293 93 -0.04 73
OX.SABO.HHZ. 2023-04-16T05:33:24.82 0.6 undecidable manual S 146 18.7701 101 0.19 48
IV.PTCC.HHZ. 2023-04-16T05:33:23.36 0.1 undecidable manual P 340 32.8449 93 -0.25 93
OX.PRED.HHE. 2023-04-16T05:33:23.61 0.1 undecidable manual P 8 35.2425 93 -0.36 90
OX.DRE.HHZ. 2023-04-16T05:33:23.24 0.6 undecidable manual S 66 12.2766 119 0.26 49
OX.SABO.HHZ. 2023-04-16T05:33:21.46 0.1 undecidable manual P 146 18.7701 101 0 100
NI.VINO.HHZ. 2023-04-16T05:33:21.76 0.1 undecidable manual P 309 22.0668 97 -0.19 96
OX.BAD.HHE. 2023-04-16T05:33:21.85 0.1 undecidable manual P 301 22.755 97 -0.22 96
OX.DRE.HHZ. 2023-04-16T05:33:20.64 0.1 undecidable manual P 66 12.2766 119 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.DRE.HNN. ML:1.6 0.00036991615 0.16 AML other m 2023-04-16T05:33:23.44
OX.DRE.HHN. ML:1.6 0.00040805455 0.16 AML other m 2023-04-16T05:33:23.44
OX.DRE.HHE. ML:1.5 0.00035169879999999995 0.1408 AML other m 2023-04-16T05:33:23.44
OX.DRE.HNE. ML:1.5 0.00029916185 0.1408 AML other m 2023-04-16T05:33:23.44
OX.SABO.HHN. ML:1.4 0.00020595718499999999 0.24 AML other m 2023-04-16T05:33:25.20
OX.SABO.HNN. ML:2.0 0.0007067481 0.2592 AML other m 2023-04-16T05:33:25.20
OX.SABO.HHE. ML:1.5 0.0002203638 0.2176 AML other m 2023-04-16T05:33:25.30
OX.SABO.HNE. ML:2.1 0.00098764785 0.2176 AML other m 2023-04-16T05:33:25.30
IV.PTCC.HHN. ML:0.7 0.00001828465 0.1408 AML other m 2023-04-16T05:33:28.38
OX.ACOM.HNE. ML:1.4 0.000067396695 0.96 AML other m 2023-04-16T05:33:28.69
IV.PTCC.HHE. ML:0.6 0.000016785865 0.2592 AML other m 2023-04-16T05:33:30.26
OX.PLRO.HNE. ML:1.7 0.00012189634999999998 0.88 AML other m 2023-04-16T05:33:32.21
OX.ACOM.HHE. ML:1.0 0.000027847570000000002 0.2592 AML other m 2023-04-16T05:33:32.90
OX.PLRO.HNN. ML:1.7 0.000110486865 0.88 AML other m 2023-04-16T05:33:33.12
OX.PLRO.HHN. ML:1.1 0.000028850560000000002 0.3008 AML other m 2023-04-16T05:33:34.83
OX.PLRO.HHE. ML:0.8 0.000016563850000000002 1.8816 AML other m 2023-04-16T05:33:35.01
OX.ACOM.HHN. ML:0.8 0.000019261215 0.8416 AML other m 2023-04-16T05:33:39.80
OX.ACOM.HNN. ML:1.4 0.000079852185 0.5408 AML other m 2023-04-16T05:33:43.89
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