Earthquake with magnitude of Mw 4.5 on date 21-05-2016 and time 18:41:31 (Italy) in region Macedonia [Land]

A magnitude Mw 4.5 earthquake occured in region: Macedonia [Land], on

  • 21-05-2016 16:41:31 (UTC)
  • 21-05-2016 18:41:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 41.23, 20.97 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

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
Seismic hazard
Shakemap
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 (http://www.haisentitoilterremoto.it/) 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 501 Mw 4.5 2016-05-21
16:41:31
41.23 20.97 15 2016-05-25
17:33:40
TDMT-INGV Revised 25327921
Rev 501 Mw 4.5 2016-05-21
16:41:31
41.23 20.97 15 2016-05-25
17:31:25
TDMT-INGV Revised 25327881
Rev 501 Mw 4.5 2016-05-21
16:41:31
41.23 20.97 15 2016-05-25
17:31:14
TDMT-INGV Revised 25327871
Rev 100 mb 5.0
Mwp 4.9
2016-05-21
16:41:31
41.23 20.97 13 2016-05-21
17:06:09
Sala Sismica INGV-Roma 25247031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-05-21 16:41:31
Latitude 41.23
Longitude 20.97
Depth (km) 13 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 25247031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1592
Semi-minor axis of confidence ellipse (meter) 312
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 30
Circular confidence region, given by single value of horizontal uncertainty (meter) 1307
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54.4395
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 56
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.10366
Epicentral distance of station closest to the epicenter (degree) 0.84355
Epicentral distance of station farthest from the epicenter (degree) 43.1097
Number of stations at which the event was observed 56
Number of stations from which data was used for origin computation 56
Magnitudes information

Mwp:4.9

Field Value
Value 4.9
Uncertainty 0.1
Num. used stations 9
Type of magnitude Mwp
Reference to an origin 25247031
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2016-05-21 17:06:09

Mw:4.5

Field Value
Value 4.5
Uncertainty
Num. used stations
Type of magnitude Mw
Reference to an origin 25327921
Agency INGV
Autore TDMT-INGV Revised
Time of creation (UTC) 2016-05-25 17:33:40

Mw:4.5

Field Value
Value 4.5
Uncertainty
Num. used stations
Type of magnitude Mw
Reference to an origin 25327881
Agency INGV
Autore TDMT-INGV Revised
Time of creation (UTC) 2016-05-25 17:31:25

Mw:4.5

Field Value
Value 4.5
Uncertainty
Num. used stations
Type of magnitude Mw
Reference to an origin 25327871
Agency INGV
Autore TDMT-INGV Revised
Time of creation (UTC) 2016-05-25 17:31:14

mb:5

Field Value
Value 5
Uncertainty 0.3
Num. used stations 38
Type of magnitude mb
Reference to an origin 25247031
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2016-05-21 17:06:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
SS.COI.BHZ. 2016-05-21T16:50:21.45 10.0 positive automatic PcP 277 22.1893 -1.89637 0
IU.MAKZ.BHZ.00 2016-05-21T16:49:31.95 10.0 negative automatic P 61 43.1097 0.998614 0.672383
DK.ICESG.BHZ.00 2016-05-21T16:49:18.35 10.0 positive automatic P 332 41.6403 -1.03317 0.668133
II.KURK.BHZ.00 2016-05-21T16:49:06.07 10.0 positive automatic P 56 40.0962 -0.107843 0.711418
GE.DAG.BHZ. 2016-05-21T16:48:57.75 10.0 positive automatic P 347 39.2746 -1.56489 0.761203
DK.SCO.BHZ. 2016-05-21T16:48:34.65 10.0 positive automatic P 337 36.3739 -0.152008 0.799663
II.BRVK.BHZ.00 2016-05-21T16:48:21.17 10.0 positive automatic P 53 34.7693 0.106034 0.777376
II.UOSS.BHZ.00 2016-05-21T16:48:07.32 10.0 positive automatic P 108 33.3832 -1.7065 0.840172
KZ.ABKAR.BHZ. 2016-05-21T16:47:23.18 10.0 negative automatic P 60 28.2398 -0.485782 0.952381
PM.PESTR.BHZ. 2016-05-21T16:46:24.09 10.0 negative automatic P 273 21.8932 0.367962 0.930233
GE.MTE.BHZ. 2016-05-21T16:46:21.00 10.0 positive automatic P 277 21.502 2.40484 0.909091
II.ESK.BHZ.00 2016-05-21T16:46:14.72 10.0 positive automatic P 320 21.1927 -1.44182 0.888889
GB.MCH1.BHZ. 2016-05-21T16:45:58.14 10.0 negative automatic P 312 19.5343 -0.0103086 0.970874
IU.PAB.BHZ.00 2016-05-21T16:45:55.47 10.0 negative automatic P 273 19.2931 -0.162898 0.909091
IU.GNI.BHZ.00 2016-05-21T16:45:42.87 10.0 positive automatic P 86 17.9972 1.8375 0.930233
GE.EIL.BHZ. 2016-05-21T16:45:16.75 10.0 positive automatic P 131 16.1815 -1.26782 0.952381
G.SSB.BHZ.00 2016-05-21T16:44:28.80 10.0 negative automatic P 294 12.6083 -1.27031 0.952381
G.ECH.BHZ.00 2016-05-21T16:44:20.40 10.0 positive automatic P 310 12.0211 -1.61784 0.930233
GE.CSS.BHZ. 2016-05-21T16:44:17.05 10.0 positive automatic P 119 11.55 1.50461 0.869565
II.BFO.BHZ.00 2016-05-21T16:44:12.42 10.0 positive automatic P 313 11.4214 -1.40026 0.952381
IV.MONC.BHZ. 2016-05-21T16:43:58.78 10.0 negative automatic P 296 10.2515 0.988046 0.952381
OE.DAVA.BHZ. 2016-05-21T16:43:54.88 10.0 positive automatic P 311 9.9767 0.664869 0.888889
MN.TUE.BHZ. 2016-05-21T16:43:53.40 10.0 positive automatic P 306 9.8752 0.518505 0.888889
CZ.KHC.BHZ. 2016-05-21T16:43:48.22 10.0 positive automatic P 329 9.4587 1.25825 0.952381
IV.BOB.BHZ. 2016-05-21T16:43:42.93 10.0 negative automatic P 297 9.1331 0.390603 0.869565
PL.OJC.BHZ. 2016-05-21T16:43:42.02 10.0 negative automatic P 355 9.0302 0.982946 0.888889
GE.MORC.BHZ. 2016-05-21T16:43:40.45 10.0 negative automatic P 346 8.8795 1.42689 0.851064
MN.VSL.BHZ. 2016-05-21T16:43:38.78 10.0 negative automatic P 263 8.9961 -1.78272 0.97561
IV.SALO.BHZ. 2016-05-21T16:43:36.51 10.0 positive automatic P 304 8.7585 -0.836418 0.869565
MN.VLC.BHZ. 2016-05-21T16:43:32.10 10.0 negative automatic P 294 8.3085 0.931242 0.952381
GE.ISP.BHZ.00 2016-05-21T16:43:29.40 10.0 negative automatic P 112 8.0882 1.16643 0.930233
OE.KBA.BHZ. 2016-05-21T16:43:27.65 10.0 positive automatic P 320 8.0056 0.442035 0.909091
KO.MDUB.BHZ. 2016-05-21T16:43:23.94 10.0 negative automatic P 92 7.7654 0.132252 0.970874
IV.PTCC.BHZ. 2016-05-21T16:43:21.15 10.0 negative automatic P 316 7.5483 0.387327 0.869565
GE.KARP.BHZ. 2016-05-21T16:43:20.20 10.0 positive automatic P 138 7.4632 0.633052 0.930233
OE.ARSA.BHZ. 2016-05-21T16:43:16.55 10.0 positive automatic P 329 7.1751 0.93353 0.952381
MN.CLTB.BHZ. 2016-05-21T16:43:14.95 10.0 positive automatic P 241 7.013 1.49649 0.930233
IV.MGAB.BHZ. 2016-05-21T16:43:10.30 10.0 positive automatic P 287 6.7874 0.00808639 0.930233
GE.PSZ.BHZ. 2016-05-21T16:43:09.10 10.0 positive automatic P 354 6.736 -0.555424 0.930233
MN.IDI.BHZ. 2016-05-21T16:43:07.56 10.0 positive automatic P 151 6.6847 -1.35264 0.930233
GE.TIRR.BHZ. 2016-05-21T16:43:03.52 10.0 positive automatic P 57 6.336 -0.484942 0.952381
GE.SANT.BHZ. 2016-05-21T16:43:00.50 10.0 negative automatic P 143 5.98 1.3004 0.869565
MN.AQU.BHZ. 2016-05-21T16:42:56.48 10.0 positive automatic P 284 5.7528 0.376129 0.930233
KO.DKL.BHZ. 2016-05-21T16:42:45.86 10.0 positive automatic P 113 5.0179 -0.0271399 0.892857
MN.CEL.BHZ. 2016-05-21T16:42:43.25 10.0 positive automatic P 234 4.9028 -1.17192 0.952381
MN.BLY.BHZ. 2016-05-21T16:42:39.99 10.0 positive automatic P 323 4.4817 1.42827 0.930233
HL.ITM.HHZ. 2016-05-21T16:42:34.04 10.0 positive automatic P 169 4.1135 0.516178 0.97561
HT.ALN.HHZ. 2016-05-21T16:42:28.53 10.0 positive automatic P 93 3.8406 -1.18812 0.938967
HL.RDO.HHZ. 2016-05-21T16:42:22.82 10.0 positive automatic P 90 3.4332 -1.29967 0.904977
GE.MATE.BHZ. 2016-05-21T16:42:21.45 10.0 positive automatic P 261 3.2761 -0.578322 0.97561
MN.DIVS.BHZ. 2016-05-21T16:42:17.29 10.0 positive automatic P 346 2.9614 -0.498081 0.909091
HT.AGG.HHZ. 2016-05-21T16:42:09.80 10.0 negative automatic P 154 2.4382 -0.723765 0.97561
MN.VTS.BHZ. 2016-05-21T16:42:06.26 10.0 positive automatic P 50 2.1832 -0.909045 0.909091
MN.PDG.BHZ. 2016-05-21T16:42:02.29 10.0 negative automatic P 314 1.7545 1.27188 0.952381
HL.KEK.HHZ. 2016-05-21T16:42:01.56 10.0 positive automatic P 211 1.7586 0.450276 0.97561
MN.TIR.BHZ. 2016-05-21T16:41:45.74 10.0 positive automatic P 279 0.8436 -1.36659 0.909091
TDMT - Time Domain Moment Tensor

TDMT details

Field Value
Magnitude4.5
Scalar Moment7.48847E+22 dyne-cm
Computed depth15 km
QualityAa
Variance Reduction66.43%
Double Couple95%
CLVD5%
ISO0%
Model usedCIA
Modemanual
Statusreviewed

Moment Tensor Components

Component Value
Mrr-4.38868E+22
Mtt1.52957E+22
Mpp2.85911E+22
Mrt-1.6627E+21
Mrp-5.14507E+22
Mtp3.83687E+22

Nodal Planes

Name Strike Dip Rake
PN11469-116
PN224833-41

Focal Mechanism

Focal Mechanism

psmeca (GMT documentation)

20.9741 41.226 15 14 69 -116 248 33 -41 7.48847 22 21.4741 41.726

TDMT references

More info and references

Station Distribution

Station Distribution

TDMT station details

Sta Dist Azi V R zcor
SRS 219.5 92.5 66.19% 111
SOH 205.3 101.9 24.27% 110
GRG 123.7 103.6 79.72% 102
HORT 192.2 110.6 75.41% 110
THE 180 110.8 63.24% 107
PAIG 269.9 121.2 59.74% 118
FNA 60.2 144.9 74.09% 95
TIR 94 278.6 80.11% 101
VLO 150.4 236.5 58.98% 110
SCTE 247.7 239.7 72.54% 120
PDG 195.3 313.8 61.52% 112
LKD2 271.9 185.8 72% 122
AGG 270.9 154.2 52.48% 120
VTS 243 49.7 52.4% 114
DIVS 329.1 346.2 44.65% 124
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download