Earthquake with magnitude of ML 4.2 on date 30-12-2020 and time 08:21:23 (UTC) in region Croatia [Land]

A magnitude ML 4.2 earthquake occured in region: Croatia [Land], on

  • 30-12-2020 08:21:23 (UTC)
  • 30-12-2020 09:21:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 45.394, 16.119 at 7 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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 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
Shakemap

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap *

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap *

This map shows the distribution of peak ground acceleration expressed as percent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap *

This map shows the distribution of peak ground velocities expressed in cm/s.
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
Bulletin
Rev1000
ML 4.2 2020-12-30
08:21:23
45.394 16.1195 7 2021-01-08
10:42:00
Bollettino Sismico Italiano INGV 85883061
Reviewed
Rev100
ML 4.0 2020-12-30
08:21:22
45.283 16.1935 10 2020-12-30
08:47:16
Sala Sismica INGV-Roma 85875581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-30 08:21:23 ± 0.29
Latitude 45.3940 ± 0.0072
Longitude 16.1195 ± 0.0077
Depth (km) 7 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85883061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 889
Semi-minor axis of confidence ellipse (meter) 62
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 212
Circular confidence region, given by single value of horizontal uncertainty (meter) 890
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 141
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.61783
Epicentral distance of station farthest from the epicenter (degree) 3.85809
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 35
Magnitudes information

ML:4.2

Field Value
Value 4.2
Uncertainty 0.2
Num. used stations 38
Type of magnitude ML
Reference to an origin 85883061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-08 10:40:15

ML:4

Field Value
Value 4
Uncertainty 0.2
Num. used stations 42
Type of magnitude ML
Reference to an origin 85875581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-30 08:47:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MAGA.HHZ. 2020-12-30T08:22:24.13 1.0 undecidable manual P 278 3.8581 38 0.35 0
SI.LUSI.HHZ. 2020-12-30T08:22:21.74 1.0 undecidable manual P 281 3.6575 38 0.74 0
OE.WTTA.HHZ. 2020-12-30T08:22:21.60 0.6 undecidable manual P 303 3.6135 38 1.2 0
SI.ROSI.HHZ. 2020-12-30T08:22:21.33 1.0 undecidable manual P 297 3.6009 38 1.11 0
OX.SABO.HHZ. 2020-12-30T08:22:19.50 0.6 undecidable manual S 290 1.8337 38 -0.21 0
ST.DOSS.HHZ. 2020-12-30T08:22:18.74 0.3 undecidable manual P 280 3.4795 38 0.2 0
NI.DST2.HHE. 2020-12-30T08:22:16.10 0.6 undecidable manual S 280 1.6449 38 0.92 3
MN.TRI.HHZ. 2020-12-30T08:22:16.20 1.0 undecidable manual S 282 1.6781 38 0.21 1
IV.CTI.HHN. 2020-12-30T08:22:14.22 1.0 undecidable manual P 283 3.1863 38 -0.27 0
IV.TEOL.HHE. 2020-12-30T08:22:13.90 0.6 undecidable manual P 271 3.1206 38 0.31 0
OX.VARN.HNN. 2020-12-30T08:22:09.87 0.3 undecidable manual P 283 2.8652 38 -0.19 0
IV.FREG.EHE. 2020-12-30T08:22:08.96 1.0 undecidable manual P 284 2.7267 38 0.81 0
OX.CIMO.HNZ. 2020-12-30T08:22:08.06 0.3 undecidable manual P 291 2.7169 38 0.05 0
OX.CAE.HHZ. 2020-12-30T08:22:07.05 0.6 undecidable manual P 285 2.6422 38 0.08 0
NI.PURA.HHZ. 2020-12-30T08:22:06.18 0.3 positive manual P 295 2.5649 38 0.27 0
IV.FVI.HHZ. 2020-12-30T08:22:06.86 0.3 undecidable manual P 299 2.6107 38 0.31 0
SL.LJU.BHZ. 2020-12-30T08:22:05.70 0.6 undecidable manual S 301 1.286 50 0.98 22
OX.CLUD.HHZ. 2020-12-30T08:22:05.55 0.1 negative manual P 296 2.4884 38 0.69 0
IV.STAL.HHZ. 2020-12-30T08:22:05.78 0.3 undecidable manual P 291 2.5271 38 0.4 0
OX.MLN.HNZ. 2020-12-30T08:22:05.80 0.3 undecidable manual P 288 2.5568 38 0.01 0
OX.FUSE.HHZ. 2020-12-30T08:22:04.28 0.1 negative manual P 296 2.3958 38 0.7 0
NI.PALA.HHZ. 2020-12-30T08:22:03.81 0.3 positive manual P 292 2.3823 38 0.42 0
OX.MPRI.HHZ. 2020-12-30T08:22:03.34 0.3 positive manual P 292 2.3391 38 0.54 0
OX.BOO.HNZ. 2020-12-30T08:22:02.57 0.6 undecidable manual P 295 2.2969 38 0.36 0
RF.GEPF.HHZ. 2020-12-30T08:22:01.86 0.6 undecidable manual P 294 2.2546 38 0.24 0
OX.BAD.HNE. 2020-12-30T08:22:00.96 0.3 undecidable manual P 294 2.1719 38 0.48 0
OX.ACOM.HHZ. 2020-12-30T08:22:00.81 0.3 undecidable manual P 303 2.1458 38 0.69 0
NI.VINO.HHZ. 2020-12-30T08:22:00.86 0.3 undecidable manual P 294 2.1593 38 0.56 0
IV.PTCC.HHZ. 2020-12-30T08:22:00.82 0.6 undecidable manual P 299 2.1737 38 0.31 0
OX.PRED.HHE. 2020-12-30T08:21:59.71 0.6 undecidable manual P 301 2.0621 38 0.75 0
SL.KOGS.BHZ. 2020-12-30T08:21:57.58 1.0 undecidable manual S 5 1.0576 50 -0.35 22
OX.DRE.HHZ. 2020-12-30T08:21:56.01 0.3 positive manual P 295 1.8922 38 -0.61 0
MN.BLY.HNZ. 2020-12-30T08:21:56.30 0.6 undecidable manual S 130 0.9902 50 0.36 45
OE.ARSA.BHZ. 2020-12-30T08:21:55.54 0.3 positive manual P 348 1.9003 38 -1.19 0
OX.SABO.HHZ. 2020-12-30T08:21:55.77 0.3 positive manual P 290 1.8337 38 -0.04 0
NI.DST2.HHE. 2020-12-30T08:21:53.77 0.1 negative manual P 280 1.6449 38 0.57 6
MN.TRI.HHZ. 2020-12-30T08:21:52.78 0.3 undecidable manual P 282 1.6781 38 -0.88 3
SL.LJU.BHZ. 2020-12-30T08:21:47.82 0.1 positive manual P 301 1.286 50 0.66 52
SL.KOGS.BHZ. 2020-12-30T08:21:43.11 0.3 negative manual P 5 1.0576 50 -0.13 68
SL.BOJS.BHE. 2020-12-30T08:21:43.96 0.6 undecidable manual S 281 0.6178 50 -0.96 38
MN.BLY.HNZ. 2020-12-30T08:21:41.85 0.1 negative manual P 130 0.9902 50 -0.24 93
SL.BOJS.BHE. 2020-12-30T08:21:35.70 0.1 negative manual P 281 0.6178 50 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
MN.TRI.HHE. ML:3.8 0.0024173075 0.3456 AML other m 2020-12-30T08:22:20.42
MN.TRI.HHN. ML:3.7 0.0018624785 0.48 AML other m 2020-12-30T08:22:21.25
OX.SABO.HHE. ML:4.3 0.0056080765 0.6592 AML other m 2020-12-30T08:22:29.88
OX.SABO.HNE. ML:4.9 0.02330504 0.6784 AML other m 2020-12-30T08:22:29.89
OX.SABO.HHN. ML:4.2 0.0051317345 0.5184 AML other m 2020-12-30T08:22:29.97
OX.SABO.HNN. ML:4.8 0.018986185 0.544 AML other m 2020-12-30T08:22:29.00
NI.VINO.HHE. ML:3.9 0.0016207995 0.6208 AML other m 2020-12-30T08:22:38.17
NI.VINO.HHN. ML:4 0.0020628585 0.5952 AML other m 2020-12-30T08:22:41.00
RF.GEPF.HHN. ML:4 0.001916144 0.4992 AML other m 2020-12-30T08:22:44.46
OX.MPRI.HNE. ML:4 0.001971657 0.6784 AML other m 2020-12-30T08:22:44.93
OX.MPRI.HHE. ML:4.2 0.0025494985 0.6784 AML other m 2020-12-30T08:22:44.93
OX.MPRI.HHN. ML:4.3 0.003744935 0.6144 AML other m 2020-12-30T08:22:45.38
OX.MPRI.HNN. ML:4.2 0.0029156105 0.64 AML other m 2020-12-30T08:22:45.38
RF.GEPF.HHE. ML:4 0.0017343385 0.6016 AML other m 2020-12-30T08:22:47.37
NI.PALA.HHE. ML:4.5 0.0048465835 0.6848 AML other m 2020-12-30T08:22:48.17
NI.PALA.HHN. ML:4.5 0.0052792685 0.8384 AML other m 2020-12-30T08:22:52.58
IV.FVI.HHN. ML:3.8 0.00097709075 0.6592 AML other m 2020-12-30T08:22:53.97
IV.STAL.HHN. ML:4.2 0.0021259435 0.5376 AML other m 2020-12-30T08:22:53.78
OX.CLUD.HNN. ML:4 0.0013891715 1.344 AML other m 2020-12-30T08:22:54.18
OX.CLUD.HHN. ML:4 0.0013932235 1.3248 AML other m 2020-12-30T08:22:54.18
OX.CLUD.HHE. ML:4.1 0.0018785505 0.704 AML other m 2020-12-30T08:22:55.04
OX.CLUD.HNE. ML:4.1 0.0018705145 0.704 AML other m 2020-12-30T08:22:55.04
IV.STAL.HNE. ML:4.4 0.0036128665 0.672 AML other m 2020-12-30T08:22:56.51
IV.STAL.HHE. ML:4.4 0.003893788 0.6592 AML other m 2020-12-30T08:22:56.52
IV.STAL.HNN. ML:4.2 0.002215759 0.704 AML other m 2020-12-30T08:22:57.49
IV.FVI.HHE. ML:3.9 0.00110654585 0.6784 AML other m 2020-12-30T08:22:59.72
ST.DOSS.HHE. ML:4.2 0.00112094255 0.6656 AML other m 2020-12-30T08:23:24.21
ST.DOSS.HNN. ML:4.2 0.00109958675 0.6656 AML other m 2020-12-30T08:23:24.21
ST.DOSS.HHN. ML:4.4 0.001600541 0.5184 AML other m 2020-12-30T08:23:26.83
ST.DOSS.HNE. ML:4.4 0.001521437 0.4992 AML other m 2020-12-30T08:23:26.84
SI.ROSI.HHE. ML:4.2 0.00088893245 1.0048 AML other m 2020-12-30T08:23:29.04
OE.WTTA.HHE. ML:3.9 0.00047429535 0.5824 AML other m 2020-12-30T08:23:29.19
SI.LUSI.HHE. ML:4.2 0.00093436305 0.8 AML other m 2020-12-30T08:23:31.85
SI.ROSI.HHN. ML:4.2 0.0010288439 0.7232 AML other m 2020-12-30T08:23:31.64
SI.LUSI.HHN. ML:4.3 0.00105652465 0.5632 AML other m 2020-12-30T08:23:35.67
OE.WTTA.HHN. ML:3.9 0.0004350879 0.8384 AML other m 2020-12-30T08:23:36.62
IV.MAGA.HHN. ML:4.3 0.0009336615 0.4608 AML other m 2020-12-30T08:23:39.45
IV.MAGA.HHE. ML:4.5 0.001677437 0.4992 AML other m 2020-12-30T08:23:41.00
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, http://terremoti.ingv.it/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