Earthquake with magnitude of ML 2.1 on date 21-03-2023 and time 03:42:43 (UTC) in region 2 km NW Gemona del Friuli (UD)

A magnitude ML 2.1 earthquake occured in region: 2 km NW Gemona del Friuli (UD), on

  • 21-03-2023 03:42:43 (UTC)
  • 21-03-2023 04:42:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 46.2880, 13.1220 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
Gemona del Friuli UD 2 10964 10964
Bordano UD 3 754 11718
Trasaghis UD 4 2227 13945
Osoppo UD 5 2936 16881
Venzone UD 5 2117 18998
Montenars UD 6 538 19536
Artegna UD 6 2885 22421
Magnano in Riviera UD 8 2336 24757
Buja UD 9 6563 31320
Amaro UD 10 823 32143
Cavazzo Carnico UD 11 1052 33195
Lusevera UD 11 643 33838
Treppo Grande UD 11 1708 35546
Tarcento UD 11 9012 44558
Majano UD 12 5945 50503
Cassacco UD 14 2938 53441
Colloredo di Monte Albano UD 14 2223 55664
Forgaria nel Friuli UD 14 1786 57450
Vito d'Asio PN 14 769 58219
Resiutta UD 14 309 58528
Moggio Udinese UD 15 1714 60242
Nimis UD 15 2740 62982
Verzegnis UD 15 863 63845
Tolmezzo UD 15 10440 74285
Tricesimo UD 16 7600 81885
San Daniele del Friuli UD 16 8013 89898
Ragogna UD 17 2909 92807
Clauzetto PN 17 380 93187
Resia UD 17 1033 94220
Taipana UD 18 636 94856
Pinzano al Tagliamento PN 18 1525 96381
Attimis UD 18 1805 98186
Reana del Rojale UD 18 4966 103152
Moruzzo UD 19 2456 105608
Pagnacco UD 19 5044 110652
Rive d'Arcano UD 19 2444 113096
Castelnovo del Friuli PN 19 880 113976
Fagagna UD 20 6385 120361
Chiusaforte UD 20 672 121033

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Udine (99169 inhabitants)
51 Km NE of Pordenone (51229 inhabitants)
87 Km NW of Trieste (204420 inhabitants)
97 Km NE of Treviso (83731 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is 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 shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is 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 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
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 2.1 2023-03-21
03:42:43
46.2885 13.1217 10 2023-03-21
03:56:57
Sala Sismica INGV-Roma 115584321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-21 03:42:43 ± 0.03
Latitude 46.2885 ± 0.0018
Longitude 13.1217 ± 0.0026
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115584321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 228
Semi-minor axis of confidence ellipse (meter) 154
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 183
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.73115
Number of stations at which the event was observed 40
Number of stations from which data was used for origin computation 19
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 49
Type of magnitude ML
Reference to an origin 115584321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-21 03:56:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ACER.HHZ. 2023-03-21T03:44:22.59 3.0 undecidable manual Pg 10.8 0
IV.RCAV.EHZ. 2023-03-21T03:43:56.25 3.0 negative manual Pn 4.02 0
IV.MABI.HHZ. 2023-03-21T03:43:43.33 3.0 undecidable manual Sn 1.7 0
ST.VARA.EHZ. 2023-03-21T03:43:38.24 3.0 undecidable manual Sn 1.75 0
IV.ASSB.HHZ. 2023-03-21T03:43:36.99 3.0 undecidable manual Pn 0.94 0
SI.LUSI.HHZ. 2023-03-21T03:43:34.69 3.0 undecidable manual Sn -0.18 0
IV.ROVR.HHZ. 2023-03-21T03:43:33.97 3.0 undecidable manual Sn -1.29 0
ST.OZOL.EHZ. 2023-03-21T03:43:32.90 3.0 undecidable manual S 0.76 0
IV.ZOVE.EHZ. 2023-03-21T03:43:31.86 3.0 undecidable manual S 0.36 0
ST.DOSS.HHZ. 2023-03-21T03:43:30.05 3.0 undecidable manual S -1.29 0
IV.SENI.EHZ. 2023-03-21T03:43:26.49 3.0 positive manual Pn -0.24 0
IV.CTI.HHZ. 2023-03-21T03:43:21.51 3.0 undecidable manual S -0.84 0
ST.RONC.EHZ. 2023-03-21T03:43:18.82 3.0 positive manual Pg 3.22 0
SL.LJU.BHZ. 2023-03-21T03:43:17.87 3.0 undecidable manual S -2.56 0
ST.VARA.EHZ. 2023-03-21T03:43:15.07 3.0 negative manual Pn 1.5 0
SL.BOJS.BHZ. 2023-03-21T03:43:15.27 3.0 undecidable manual Pn 1.01 0
IV.ROVR.HHZ. 2023-03-21T03:43:12.62 3.0 negative manual Pn -0.26 0
OE.WTTA.HHZ. 2023-03-21T03:43:11.39 3.0 negative manual P 0.65 0
SI.ROSI.HHZ. 2023-03-21T03:43:11.89 3.0 positive manual P 2.11 0
ST.DOSS.HHZ. 2023-03-21T03:43:10.91 3.0 undecidable manual P 0.23 0
SI.ABSI.HHZ. 2023-03-21T03:43:09.26 3.0 negative manual P -0.23 0
IV.CTI.HHZ. 2023-03-21T03:43:05.82 3.0 positive manual P 0.19 0
ST.ZIAN.EHZ. 2023-03-21T03:43:05.69 3.0 positive manual P -0.5 0
OX.AGOR.HHZ. 2023-03-21T03:43:01.49 3.0 undecidable manual P 1.52 0
OX.VARN.HHZ. 2023-03-21T03:42:58.03 3.0 positive manual P -2.32 0
MN.TRI.HHZ. 2023-03-21T03:42:57.94 0.3 undecidable manual P 142 0.7311 50 0.21 65
OX.CAE.HHZ. 2023-03-21T03:42:54.50 0.1 undecidable manual P 240 0.5495 50 -0.13 91
OX.CLUD.HNZ. 2023-03-21T03:42:53.31 0.1 undecidable manual S 316 0.2365 50 -0.04 99
OX.SABO.HHE. 2023-03-21T03:42:53.07 0.1 undecidable manual P 130 0.4649 50 -0.11 93
NI.POLC.HHZ. 2023-03-21T03:42:53.96 0.1 undecidable manual P 239 0.5036 50 0.12 92
IV.PTCC.HHZ. 2023-03-21T03:42:52.03 0.1 undecidable manual S 53 0.1996 115 -0.14 97
OX.MLN.HHZ. 2023-03-21T03:42:51.62 0.1 undecidable manual P 249 0.3768 50 -0.05 96
OX.DRE.HHZ. 2023-03-21T03:42:51.65 0.1 undecidable manual P 107 0.3795 50 -0.07 95
OX.PRED.HHE. 2023-03-21T03:42:51.11 0.3 undecidable manual P 63 0.3426 50 0.02 73
OX.ACOM.HHZ. 2023-03-21T03:42:51.75 0.3 undecidable manual P 46 0.3741 50 0.12 71
NI.PURA.HHE. 2023-03-21T03:42:50.09 0.1 undecidable manual P 298 0.2959 50 -0.2 94
NI.PALA.HHZ. 2023-03-21T03:42:50.29 0.3 undecidable manual S 252 0.1430 123 0.03 75
OX.FUSE.HHZ. 2023-03-21T03:42:50.40 0.3 undecidable manual S 327 0.1511 121 -0.1 74
NI.VINO.HHZ. 2023-03-21T03:42:49.35 0.3 undecidable manual S 108 0.1115 129 0.07 75
OX.PLRO.HHZ. 2023-03-21T03:42:49.86 0.1 undecidable manual P 4 0.2608 50 0.17 96
OX.CLUD.HNZ. 2023-03-21T03:42:49.26 0.1 undecidable manual P 316 0.2365 50 -0.01 99
OX.MPRI.HHZ. 2023-03-21T03:42:48.95 0.3 undecidable manual S 243 0.1043 131 -0.1 75
IV.PTCC.HHZ. 2023-03-21T03:42:48.48 0.3 undecidable manual P 53 0.1996 115 -0.11 73
OX.BAD.HNZ. 2023-03-21T03:42:48.72 0.3 undecidable manual S 123 0.1007 133 -0.23 73
NI.PALA.HHZ. 2023-03-21T03:42:47.54 0.1 undecidable manual P 252 0.1430 123 0.05 100
OX.FUSE.HHZ. 2023-03-21T03:42:47.68 0.1 undecidable manual P 327 0.1511 121 0.05 100
NI.VINO.HHZ. 2023-03-21T03:42:47.08 0.3 undecidable manual P 108 0.1115 129 0.16 74
RF.GEPF.HHZ. 2023-03-21T03:42:47.15 0.3 undecidable manual S 139 0.0180 169 -0.16 75
OX.BOO.HNZ. 2023-03-21T03:42:47.57 0.3 undecidable manual S 333 0.0351 159 0.08 76
OX.BAD.HNZ. 2023-03-21T03:42:46.82 0.3 undecidable manual P 123 0.1007 133 0.09 75
OX.BOO.HNZ. 2023-03-21T03:42:46.11 0.3 undecidable manual P 333 0.0351 159 0.22 74
OX.MPRI.HHZ. 2023-03-21T03:42:46.80 0.3 undecidable manual P 243 0.1043 131 0.01 76
RF.GEPF.HHZ. 2023-03-21T03:42:45.92 0.3 undecidable manual P 139 0.0180 169 0.14 76
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
OX.MPRI.HNE. ML:2.3 0.002182793 0.24 AML other m 2023-03-21T03:42:49.40
OX.MPRI.HHE. ML:2.3 0.00233 0.24 AML other m 2023-03-21T03:42:49.40
NI.VINO.HHE. ML:1.7 0.00054024955 0.12 AML other m 2023-03-21T03:42:50.33
NI.VINO.HHN. ML:1.7 0.0005626670499999999 0.1792 AML other m 2023-03-21T03:42:49.50
NI.PALA.HHN. ML:2.2 0.0014899905 0.2192 AML other m 2023-03-21T03:42:51.92
OX.MPRI.HHN. ML:2.3 0.002246404 0.3808 AML other m 2023-03-21T03:42:50.01
OX.MPRI.HNN. ML:2.3 0.0021036839999999998 0.36 AML other m 2023-03-21T03:42:50.02
NI.PALA.HHE. ML:2.2 0.0015216840000000001 0.1808 AML other m 2023-03-21T03:42:50.95
OX.FUSE.HHN. ML:2.1 0.0012370185999999999 0.1808 AML other m 2023-03-21T03:42:51.25
OX.FUSE.HNN. ML:2.1 0.0011385613 0.1808 AML other m 2023-03-21T03:42:51.25
OX.FUSE.HHE. ML:2.0 0.00091723485 0.1408 AML other m 2023-03-21T03:42:51.44
OX.FUSE.HNE. ML:2.0 0.0008887049 0.24 AML other m 2023-03-21T03:42:51.44
IV.PTCC.HHN. ML:2.0 0.0007484999999999999 0.08 AML other m 2023-03-21T03:42:52.42
IV.PTCC.HHE. ML:1.8 0.00040120035000000006 0.12 AML other m 2023-03-21T03:42:52.59
OX.PLRO.HNN. ML:2.6 0.0018650000000000001 0.14 AML other m 2023-03-21T03:42:54.94
OX.PLRO.HHN. ML:2.3 0.0011 0.18 AML other m 2023-03-21T03:42:54.97
OX.PLRO.HNE. ML:2.2 0.0008184025 0.0992 AML other m 2023-03-21T03:42:55.28
OX.PLRO.HHE. ML:2.0 0.0005515 0.18 AML other m 2023-03-21T03:42:55.67
OX.ACOM.HHE. ML:2.1 0.00039400000000000004 0.14 AML other m 2023-03-21T03:42:59.54
OX.ACOM.HNE. ML:2.1 0.0003755 0.18 AML other m 2023-03-21T03:42:59.38
OX.ACOM.HNN. ML:2.0 0.000362195 0.1808 AML other m 2023-03-21T03:42:59.69
OX.ACOM.HHN. ML:2.0 0.00035999999999999997 0.18 AML other m 2023-03-21T03:42:59.69
OX.DRE.HHE. ML:1.8 0.00022039544999999998 0.16 AML other m 2023-03-21T03:43:00.50
OX.DRE.HHN. ML:1.8 0.0001841405 0.1008 AML other m 2023-03-21T03:43:01.35
NI.POLC.HHE. ML:2.0 0.000217 0.14 AML other m 2023-03-21T03:43:02.89
NI.POLC.HHN. ML:2.0 0.00022700000000000002 0.3 AML other m 2023-03-21T03:43:11.89
OX.VARN.HHN. ML:1.7 0.00006748944 0.2592 AML other m 2023-03-21T03:43:17.22
OX.VARN.HHE. ML:1.9 0.00010095 0.28 AML other m 2023-03-21T03:43:18.56
IV.CTI.HHE. ML:2.2 0.00013897759999999997 0.32 AML other m 2023-03-21T03:43:27.35
IV.CTI.HHN. ML:2.1 0.00010631270000000002 0.2416 AML other m 2023-03-21T03:43:26.64
SI.ABSI.HHN. ML:2.4 0.0001315 1.5 AML other m 2023-03-21T03:43:30.82
SI.ROSI.HHE. ML:1.8 0.000032500000000000004 0.42 AML other m 2023-03-21T03:43:31.57
SI.ABSI.HHE. ML:2.2 0.00008155 1.7 AML other m 2023-03-21T03:43:33.88
ST.DOSS.HHE. ML:2.1 0.000054581805 0.16 AML other m 2023-03-21T03:43:33.78
SI.ROSI.HHN. ML:1.8 0.00003715 1.48 AML other m 2023-03-21T03:43:33.10
ST.DOSS.HHN. ML:2.3 0.0000917 0.28 AML other m 2023-03-21T03:43:35.63
IV.ROVR.HHE. ML:2.0 0.000042361510000000005 0.24 AML other m 2023-03-21T03:43:37.54
IV.ROVR.HHN. ML:2.4 0.0001097 0.16 AML other m 2023-03-21T03:43:40.11
NI.VINO.HNE. ML:2.9 0.0093002185 0.4992 AML other m 2023-03-21T03:42:50.61
NI.VINO.HNN. ML:3.1 0.013367018999999999 0.6608 AML other m 2023-03-21T03:42:48.37
OX.DRE.HNE. ML:1.8 0.00019272149999999998 0.16 AML other m 2023-03-21T03:43:00.50
OX.DRE.HNN. ML:1.7 0.00015774545 0.1008 AML other m 2023-03-21T03:43:01.31
OX.VARN.HNE. ML:1.9 0.00010448624 0.28 AML other m 2023-03-21T03:43:18.56
OX.VARN.HNN. ML:1.7 0.00006597233499999999 0.24 AML other m 2023-03-21T03:43:15.90
ST.ZIAN.EHE. ML:2.0 0.000077307415 0.2192 AML other m 2023-03-21T03:43:23.41
ST.ZIAN.EHN. ML:1.6 0.000032405095 0.2 AML other m 2023-03-21T03:43:23.64
ST.DOSS.HNE. ML:2.3 0.000089373095 0.3808 AML other m 2023-03-21T03:43:35.64
SL.BOJS.BHE. ML:2.1 0.000041957080000000004 0.2 AML other m 2023-03-21T03:43:41.09
SL.BOJS.BHN. ML:2.1 0.000042123769999999996 0.3008 AML other m 2023-03-21T03:43:44.99
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols 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