Earthquake with magnitude of mb 5.5 on date 20-05-2020 and time 23:43:16 (UTC) in region Greece [Sea]

A magnitude mb 5.5 earthquake occured in region: Greece [Sea], on

  • 20-05-2020 23:43:16 (UTC)
  • 21-05-2020 01:43:16 (UTC +02:00) Italian time
  • 21-05-2020 02:43:16 (UTC +03:00) local time in the region of the earthquake (Europe/Athens)

and geographic coordinates (lat, lon) 35.211, 20.243 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

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

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

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
Reviewed
Rev100
mb 5.5
Mwp 5.6
Mwpd 5.8
2020-05-20
23:43:16
35.2107 20.2434 10 2020-05-20
23:53:53
Sala Sismica INGV-Roma 79387341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-20 23:43:16
Latitude 35.2107
Longitude 20.2434
Depth (km) 10 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 79387341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 6536
Semi-minor axis of confidence ellipse (meter) 3368
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 335
Circular confidence region, given by single value of horizontal uncertainty (meter) 5276.7
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 43.3612
Number of associated phases, regardless of their use for origin computation 115
Number of defining phases 115
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.3153
Epicentral distance of station closest to the epicenter (degree) 2.3904
Epicentral distance of station farthest from the epicenter (degree) 54.4691
Number of stations at which the event was observed 102
Number of stations from which data was used for origin computation 102
Magnitudes information

Mwpd:5.8

Field Value
Value 5.8
Uncertainty 0.1
Num. used stations 19
Type of magnitude Mwpd
Reference to an origin 79387341
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-05-20 23:53:53

Mwp:5.6

Field Value
Value 5.6
Uncertainty 0.1
Num. used stations 70
Type of magnitude Mwp
Reference to an origin 79387341
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-05-20 23:53:53

mb:5.5

Field Value
Value 5.5
Uncertainty 0.1
Num. used stations 83
Type of magnitude mb
Reference to an origin 79387341
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-05-20 23:53:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GE.VSU.BHZ. 2020-05-20T23:52:40.40 10.0 positive automatic S 8 23.6448 -0.99317 0
IU.TSUM.BHZ.00 2020-05-20T23:52:40.17 10.0 negative automatic P 183 54.4691 -3.46557 0.451227
DK.ILULI.BHZ. 2020-05-20T23:52:18.36 10.0 negative automatic P 334 50.8156 1.97615 0.101897
GE.SFJD.BHZ.00 2020-05-20T23:52:16.67 10.0 negative automatic P 331 50.5483 2.26242 0
IU.LSZ.BHZ.00 2020-05-20T23:52:16.02 10.0 negative automatic P 170 51.046 -2.29004 0.536564
II.BORK.BHZ.00 2020-05-20T23:50:43.95 10.0 positive automatic P 47 39.1032 0.719783 0.76454
G.IVI.BHZ.00 2020-05-20T23:52:08.05 10.0 negative automatic P 324 49.4508 2.02851 0.562634
DK.NRS.BHZ. 2020-05-20T23:51:58.10 10.0 positive automatic P 324 48.1242 2.2647 0.584786
GE.SUMG.BHZ. 2020-05-20T23:51:52.00 10.0 positive automatic P 340 47.3713 2.46473 0.583968
IU.MAKZ.BHZ.00 2020-05-20T23:51:46.55 10.0 positive automatic P 56 46.7468 1.33369 0.637908
GE.DAG.BHZ. 2020-05-20T23:51:33.28 10.0 negative automatic P 348 45.0231 1.77355 0.583917
GE.KBS.BHZ.00 2020-05-20T23:51:24.22 10.0 positive automatic P 358 43.8491 2.09655 0.616097
II.AAK.BHZ.00 2020-05-20T23:51:10.47 10.0 positive automatic P 63 42.1204 2.08097 0.724061
PL.SUW.BHZ. 2020-05-20T23:51:06.87 10.0 positive automatic S 5 18.9128 -1.74303 0
IU.KIEV.BHZ.00 2020-05-20T23:50:22.67 10.0 negative automatic S 20 16.797 5.26864 0
GT.DBIC.BHZ.00 2020-05-20T23:50:20.73 10.0 positive automatic P 225 36.6915 -2.09448 0.812304
IU.KEV.BHZ.00 2020-05-20T23:50:07.22 10.0 negative automatic P 4 34.7423 1.12875 0.832152
II.LVZ.BHZ.00 2020-05-20T23:49:58.97 10.0 positive automatic P 10 33.6976 1.8524 0.873612
II.ARTI.BHZ.00 2020-05-20T23:49:52.62 10.0 positive automatic P 39 33.2889 -0.887369 0.861639
II.UOSS.BHZ.00 2020-05-20T23:49:46.67 10.0 positive automatic P 98 32.5608 -0.46372 0.876603
G.ATD.BHZ.00 2020-05-20T23:49:37.55 10.0 negative automatic P 134 31.3148 1.3154 0.90251
GE.VAL.BHZ. 2020-05-20T23:49:02.20 10.0 negative automatic P 317 27.3712 1.06411 0.930233
GE.DSB.BHZ. 2020-05-20T23:48:49.60 10.0 negative automatic P 322 25.9659 1.09838 0.952381
II.ESK.BHZ.00 2020-05-20T23:48:47.37 10.0 negative automatic P 329 25.7534 0.800954 0.888889
IU.KONO.BHZ.00 2020-05-20T23:48:43.42 10.0 positive automatic P 347 25.4034 0.0256254 0.888889
OE.KBA.BHZ. 2020-05-20T23:48:38.37 10.0 negative automatic S 339 12.9415 -5.58884 0
II.RAYN.BHZ.00 2020-05-20T23:48:38.90 10.0 positive automatic P 111 24.8186 0.749536 0.833333
LX.GGNV.BHZ. 2020-05-20T23:48:27.97 10.0 negative automatic P 287 23.642 0.658083 0.8
GE.VSU.BHZ. 2020-05-20T23:48:26.30 10.0 positive automatic P 8 23.6448 -1.03878 0.930233
LX.MORF.BHZ. 2020-05-20T23:48:23.45 10.0 negative automatic P 284 23.3029 -0.529762 0.869565
WM.AVE.BHZ. 2020-05-20T23:48:20.60 10.0 negative automatic P 273 22.8648 1.30666 0.952381
LX.MESJ.BHZ. 2020-05-20T23:48:19.79 10.0 negative automatic P 285 22.9333 -0.234764 0.930233
II.OBN.BHZ.00 2020-05-20T23:48:18.17 10.0 positive automatic P 24 22.8633 -1.09659 0.888889
PM.PVAQ.BHZ. 2020-05-20T23:48:15.09 10.0 negative automatic P 284 22.5549 -0.919164 0.909091
GE.MTE.BHZ. 2020-05-20T23:48:14.90 10.0 negative automatic P 292 22.4585 -0.188713 0.952381
GE.SLIT.BHZ. 2020-05-20T23:48:14.70 10.0 negative automatic P 3 22.4589 -0.254992 0.833333
PM.PESTR.BHZ. 2020-05-20T23:48:14.60 10.0 negative automatic P 288 22.4259 -0.0708141 0.952381
RD.ROSF.BHZ. 2020-05-20T23:48:07.40 10.0 negative automatic P 314 21.7562 -0.089567 0.970874
WM.SFS.BHZ. 2020-05-20T23:48:04.55 10.0 negative automatic P 281 21.4101 0.815489 0.909091
GE.HLG.BHZ. 2020-05-20T23:47:58.85 10.0 negative automatic P 339 20.8378 1.28332 0.930233
DK.BSD.BHZ. 2020-05-20T23:47:51.31 10.0 negative automatic P 351 20.2395 0.231355 0.952381
GE.RGN.BHZ. 2020-05-20T23:47:49.30 10.0 negative automatic P 348 19.9251 1.65174 0.909091
IU.PAB.BHZ.00 2020-05-20T23:47:49.47 10.0 negative automatic P 290 19.9498 1.39578 0.952381
GE.IBBN.BHZ. 2020-05-20T23:47:42.15 10.0 positive automatic P 336 19.264 1.70765 0.97561
II.KIV.BHZ.00 2020-05-20T23:47:41.72 10.0 positive automatic P 56 19.2944 0.792526 0.909091
RD.MFF.BHZ. 2020-05-20T23:47:39.34 10.0 negative automatic P 313 19.0674 1.03655 0.892857
PL.SUW.BHZ. 2020-05-20T23:47:37.04 10.0 negative automatic P 5 18.9128 0.453008 0.952381
G.CLF.BHZ.00 2020-05-20T23:47:31.25 10.0 negative automatic P 319 18.4862 -0.648448 0.869565
GE.FLT1.BHZ. 2020-05-20T23:47:30.90 10.0 positive automatic P 342 18.2791 1.42281 0.888889
GE.RUE.BHZ. 2020-05-20T23:47:24.65 10.0 negative automatic P 347 17.8649 0.273394 0.930233
GE.WLF.BHZ. 2020-05-20T23:47:23.60 10.0 negative automatic P 329 17.7415 0.707874 0.952381
G.TAM.BHZ.00 2020-05-20T23:47:21.75 10.0 positive automatic P 230 17.8432 -2.5907 0.851064
WM.CART.BHZ. 2020-05-20T23:47:15.92 10.0 negative automatic P 284 17.2258 -0.52064 0.930233
RD.LOR.BHZ. 2020-05-20T23:47:14.42 10.0 negative automatic P 320 17.171 -1.4144 0.943396
PL.BEL.BHZ. 2020-05-20T23:47:09.41 10.0 negative automatic P 1 16.6302 0.437875 0.888889
IU.KIEV.BHZ.00 2020-05-20T23:47:08.57 10.0 positive automatic P 20 16.797 -2.50935 0.930233
RD.MTLF.BHZ. 2020-05-20T23:47:02.08 10.0 negative automatic P 306 16.0985 -0.129822 0.980392
G.ECH.BHZ.00 2020-05-20T23:47:01.55 10.0 negative automatic P 327 16.2157 -2.198 0.909091
PL.KSP.BHZ. 2020-05-20T23:46:58.28 10.0 positive automatic P 351 15.8899 -1.23162 0.888889
GE.STU.BHZ. 2020-05-20T23:46:57.20 10.0 negative automatic P 332 15.8157 -1.35752 0.952381
II.BFO.BHZ.00 2020-05-20T23:46:56.42 10.0 negative automatic P 330 15.8034 -2.01231 0.833333
G.SSB.BHZ.00 2020-05-20T23:46:55.90 10.0 negative automatic P 315 15.6025 0.0604739 0.930233
PL.OJC.BHZ. 2020-05-20T23:46:46.75 10.0 negative automatic P 359 15.0115 -1.26274 0.930233
GE.MORC.BHZ. 2020-05-20T23:46:42.45 10.0 negative automatic P 353 14.6982 -1.3574 0.952381
CZ.KHC.BHZ. 2020-05-20T23:46:42.25 10.0 negative automatic P 343 14.7554 -2.33105 0.869565
PL.KWP.BHZ. 2020-05-20T23:46:41.95 10.0 negative automatic P 6 14.5322 0.457761 0.888889
MN.BNI.BHZ. 2020-05-20T23:46:39.30 10.0 positive automatic P 318 14.2606 1.34434 0.888889
OE.DAVA.BHZ. 2020-05-20T23:46:38.82 10.0 negative automatic P 330 14.3423 -0.281714 0.930233
MN.TUE.BHZ. 2020-05-20T23:46:31.80 10.0 negative automatic P 327 13.9268 -1.69618 0.91954
IV.MONC.BHZ. 2020-05-20T23:46:29.91 10.0 negative automatic P 320 13.6045 1.06619 0.851064
KO.BNN.BHZ. 2020-05-20T23:46:19.68 10.0 positive automatic P 69 12.9584 -0.497165 0.862069
OE.KBA.BHZ. 2020-05-20T23:46:18.67 10.0 negative automatic P 339 12.9415 -1.33634 0.930233
KO.BZK.BHZ. 2020-05-20T23:46:17.26 10.0 positive automatic P 54 12.6737 1.18594 0.961538
IV.BOB.BHZ. 2020-05-20T23:46:16.45 10.0 negative automatic P 322 12.6158 1.02806 0.909091
IV.SALO.BHZ. 2020-05-20T23:46:15.70 10.0 positive automatic P 328 12.7486 -1.4788 0.869565
GE.PSZ.BHZ. 2020-05-20T23:46:14.25 10.0 negative automatic P 359 12.7097 -2.45509 0.952381
OE.ARSA.BHZ. 2020-05-20T23:46:12.62 10.0 negative automatic P 345 12.5453 -1.77619 0.952381
IV.PTCC.BHZ. 2020-05-20T23:46:10.25 10.0 positive automatic P 337 12.339 -1.34996 0.30303
HU.LTVH.BHZ. 2020-05-20T23:46:09.82 10.0 positive automatic P 5 12.2364 -0.277722 0.930233
MN.VLC.BHZ. 2020-05-20T23:46:03.87 10.0 negative automatic P 323 11.7129 0.863848 0.888889
RD.PGF.BHZ. 2020-05-20T23:46:00.44 10.0 negative automatic P 313 11.4035 1.56439 0.952381
GE.MATE.BHZ. 2020-05-20T23:45:54.30 10.0 positive automatic S 334 6.1112 -1.61496 0
GE.TIRR.BHZ. 2020-05-20T23:45:54.66 10.0 positive automatic P 32 11.1609 -0.715749 0.833333
HU.KOVH.BHZ. 2020-05-20T23:45:50.55 10.0 negative automatic P 352 10.9968 -2.61151 0.909091
KO.MDUB.BHZ. 2020-05-20T23:45:42.70 10.0 positive automatic P 55 10.1127 1.50251 0.806452
IV.MGAB.BHZ. 2020-05-20T23:45:39.87 10.0 positive automatic P 323 9.9482 1.01702 0.888889
MN.BLY.BHZ. 2020-05-20T23:45:36.27 10.0 negative automatic P 347 9.8195 -0.764316 0.930233
MN.VSL.BHZ. 2020-05-20T23:45:34.27 10.0 positive automatic P 300 9.632 -0.214958 0.851064
MN.AQU.BHZ. 2020-05-20T23:45:25.67 10.0 negative automatic P 325 8.9059 1.08374 0.909091
GE.ISP.BHZ.00 2020-05-20T23:45:21.15 10.0 positive automatic P 69 8.6533 -0.0426107 0.952381
KO.ELL.BHZ. 2020-05-20T23:45:11.02 10.0 positive automatic P 76 7.9669 -0.779596 0.970874
KO.BALB.HHZ. 2020-05-20T23:45:05.72 10.0 positive automatic P 52 7.5048 0.452635 0.970874
HL.RDO.HHZ. 2020-05-20T23:45:01.90 10.0 positive automatic P 33 7.2435 0.222418 0.961538
MN.PDG.BHZ. 2020-05-20T23:45:01.02 10.0 negative automatic P 354 7.259 -0.856315 0.97561
IV.MRVN.BHZ. 2020-05-20T23:44:53.15 10.0 negative automatic P 333 6.658 -0.581761 0.952381
KO.DKL.BHZ. 2020-05-20T23:44:52.26 10.0 positive automatic P 52 6.5621 -0.0476438 0.943396
HL.ARG.HHZ. 2020-05-20T23:44:49.72 10.0 positive automatic P 79 6.4724 -1.37815 0.66335
MN.CLTB.BHZ. 2020-05-20T23:44:47.20 10.0 negative automatic P 295 6.1297 0.66426 0.952381
GE.MATE.BHZ. 2020-05-20T23:44:45.75 10.0 negative automatic P 334 6.1112 -0.453976 0.97561
GE.KARP.BHZ. 2020-05-20T23:44:38.05 10.0 positive automatic P 85 5.6489 -1.80469 0.930233
MN.TIP.BHZ. 2020-05-20T23:44:28.62 10.0 negative automatic P 326 4.8421 -0.187447 0.909091
MN.CEL.BHZ. 2020-05-20T23:44:26.52 10.0 negative automatic P 312 4.6302 0.635784 0.952381
MN.WDD.BHZ. 2020-05-20T23:44:26.62 10.0 negative automatic P 279 4.6958 -0.0496932 0.869565
GE.APE.BHZ. 2020-05-20T23:44:25.75 10.0 positive automatic P 65 4.6555 -0.471729 0.952381
HL.KEK.HHZ. 2020-05-20T23:44:23.77 10.0 positive automatic P 356 4.5157 -0.455469 0.865801
HT.AGG.HHZ. 2020-05-20T23:44:21.91 10.0 positive automatic P 23 4.1592 2.51664 0.995025
HL.ITM.HHZ. 2020-05-20T23:43:56.83 10.0 positive automatic P 34 2.3904 1.79125 0.990099
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