Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 5.5 on date 23-04-2023 and time 09:19:20 (UTC) in region Philippines [Sea]

A magnitude Mwp 5.5 earthquake occured in region: Philippines [Sea], on

  • 23-04-2023 09:19:20 (UTC)
  • 23-04-2023 11:19:20 (UTC +02:00) Italian time
  • 23-04-2023 17:19:20 (UTC +08:00) local time in the region of the earthquake (Asia/Manila)

and geographic coordinates (lat, lon) 17.4300, 122.3070 at 20 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.

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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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		mb 5.2
Mwp 5.5
Mwpd 5.7 		2023-04-23
09:19:20		 17.4305 122.307 20 2023-04-23
09:34:33		 Sala Sismica INGV-Roma 116637961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-23 09:19:20
Latitude 17.4305
Longitude 122.3070
Depth (km) 20 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 116637961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 17153
Semi-minor axis of confidence ellipse (meter) 3839
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 14190.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113.105
Number of associated phases, regardless of their use for origin computation 76
Number of defining phases 76
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.64089
Epicentral distance of station closest to the epicenter (degree) 7.06703
Epicentral distance of station farthest from the epicenter (degree) 95.72938
Number of stations at which the event was observed 69
Number of stations from which data was used for origin computation 69
Magnitudes information

Mwp:5.5

Field Value
Value 5.5
Uncertainty 0.1
Num. used stations 10
Type of magnitude Mwp
Reference to an origin 116637961
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-04-23 09:34:33

Mwpd:5.7

Field Value
Value 5.7
Uncertainty 0.1
Num. used stations 8
Type of magnitude Mwpd
Reference to an origin 116637961
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-04-23 09:34:33

mb:5.2

Field Value
Value 5.2
Uncertainty 0.2
Num. used stations 41
Type of magnitude mb
Reference to an origin 116637961
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2023-04-23 09:34:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
G.SSB.BHZ.00 2023-04-23T09:32:43.65 10.0 negative automatic P 321 10625.9634 0.465647 0.0538588
RD.LOR.BHZ. 2023-04-23T09:32:40.38 10.0 negative automatic P 323 10552.2927 0.256481 0.0587234
MN.BNI.BHZ. 2023-04-23T09:32:38.22 10.0 positive automatic P 320 10495.938 0.27024 0.0598091
RD.PGF.BHZ. 2023-04-23T09:32:37.36 10.0 positive automatic P 317 10470.4746 0.505498 0.0674637
IV.MONC.BHZ. 2023-04-23T09:32:34.80 10.0 negative automatic P 320 10409.8353 0.566193 0.068381
MN.VLC.BHZ. 2023-04-23T09:32:29.52 10.0 negative automatic P 318 10287.5688 0.353751 0.0731764
MN.CUC.BHZ. 2023-04-23T09:32:19.82 10.0 positive automatic P 313 10084.7829 -0.905571 0.0824691
GE.MATE.BHZ. 2023-04-23T09:32:16.30 10.0 positive automatic P 313 9986.781 -0.291821 0.0921177
IV.PTCC.BHZ. 2023-04-23T09:32:15.25 10.0 positive automatic P 319 9968.688 -0.619646 0.089069
DK.SCO.BHZ. 2023-04-23T09:32:10.70 10.0 positive automatic P 349 9839.04 0.427812 0.0989388
HL.ITM.HHZ. 2023-04-23T09:32:03.94 10.0 positive automatic P 308 9709.4586 -0.849406 0.108086
HU.KOVH.BHZ. 2023-04-23T09:32:02.60 10.0 positive automatic P 318 9649.8294 0.436895 0.116254
MN.DIVS.BHZ. 2023-04-23T09:31:59.97 10.0 positive automatic P 315 9593.0418 0.192158 0.117382
PL.KSP.BHZ. 2023-04-23T09:31:58.92 10.0 positive automatic P 323 9569.0547 0.308927 0.116315
HT.AGG.HHZ. 2023-04-23T09:31:58.71 10.0 positive automatic P 310 9606.162 -1.58132 0.117036
HT.LIT.HHZ. 2023-04-23T09:31:57.11 10.0 positive automatic P 311 9553.4481 -0.833217 0.122951
GE.MORC.BHZ. 2023-04-23T09:31:57.60 10.0 positive automatic P 321 9533.1795 0.530174 0.11873
GE.PSZ.BHZ. 2023-04-23T09:31:53.80 10.0 positive automatic P 319 9449.1969 0.455733 0.130407
MN.BZS.BHZ. 2023-04-23T09:31:51.62 10.0 positive automatic P 316 9412.8 0.0453888 0.124191
IU.CASY.BHZ.00 2023-04-23T09:31:47.67 10.0 negative automatic P 185 9342.9921 -0.682848 0.138229
GE.VOI.BHZ. 2023-04-23T09:31:46.95 10.0 positive automatic P 245 9290.7111 0.801597 0.1357
HL.RDO.HHZ. 2023-04-23T09:31:45.59 10.0 negative automatic P 311 9273.3729 0.427684 0.144859
HL.ARG.HHZ. 2023-04-23T09:31:43.10 10.0 positive automatic P 306 9219.5379 0.429165 0.0704485
PL.KWP.BHZ. 2023-04-23T09:31:42.58 10.0 negative automatic P 320 9191.4438 1.1774 0.0249642
GE.DAG.BHZ. 2023-04-23T09:31:41.42 10.0 positive automatic P 352 9211.6569 -0.864646 0.144769
CN.ATLI.BHZ. 2023-04-23T09:31:38.38 10.0 positive automatic P 30 9085.4943 1.8976 0.152685
AT.SKAG.BHZ. 2023-04-23T09:31:34.92 10.0 positive automatic P 30 9005.0637 2.38697 0.154341
GE.ISP.BHZ.00 2023-04-23T09:31:30.50 10.0 positive automatic P 307 8966.7576 -0.359011 0.167769
GE.TIRR.BHZ. 2023-04-23T09:31:29.75 10.0 positive automatic P 314 8944.7574 0.122491 0.161876
GE.CSS.BHZ. 2023-04-23T09:31:23.40 10.0 positive automatic P 303 8802.2223 0.676542 0.177364
GE.EIL.BHZ. 2023-04-23T09:31:23.70 10.0 positive automatic P 298 8796.3948 1.29298 0.177852
IU.KIEV.BHZ.00 2023-04-23T09:31:17.77 10.0 positive automatic P 320 8713.5 -0.530754 0.184862
GE.VSU.BHZ. 2023-04-23T09:31:15.85 10.0 positive automatic P 328 8664.5712 0.00386544 0.176735
US.EGAK.BHZ.00 2023-04-23T09:31:10.35 10.0 negative automatic P 26 8548.1322 0.330985 0.203998
II.KDAK.BHZ.00 2023-04-23T09:30:45.62 10.0 positive automatic P 34 8073.2298 0.363525 0.252387
AT.TTA.BHZ. 2023-04-23T09:30:34.36 10.0 negative automatic P 28 7853.8494 0.842553 0.274499
KO.GURO.HHZ. 2023-04-23T09:30:33.47 10.0 negative automatic P 306 7966.8585 -6.27007 0.269142
II.KIV.BHZ.00 2023-04-23T09:30:33.47 10.0 positive automatic P 311 7839.6636 0.720469 0.249601
II.ARTI.BHZ.00 2023-04-23T09:29:31.32 10.0 positive automatic P 325 6793.7661 -0.659866 0.394316
II.AAK.BHZ.00 2023-04-23T09:27:54.12 10.0 positive automatic P 312 5283.8442 0.833268 0.567356
II.SIMI.BHZ.00 2023-04-23T09:28:17.55 10.0 positive automatic P 306 5635.6809 0.0464295 0.528822
IU.NWAO.BHZ.00 2023-04-23T09:28:13.50 10.0 negative automatic P 186 5615.3235 -2.45088 0.570639
AU.QLP.BHZ. 2023-04-23T09:28:02.35 10.0 negative automatic P 154 5427.0897 -0.663054 0.578753
II.KURK.BHZ.00 2023-04-23T09:27:56.15 10.0 positive automatic P 324 5331.5187 -0.221603 0.593371
AU.MORW.BHZ. 2023-04-23T09:27:44.97 10.0 negative automatic P 188 5204.6346 -2.52929 0.627829
IU.CTAO.BHZ.00 2023-04-23T09:27:27.67 10.0 negative automatic P 147 4914.0699 0.8739 0.636873
AU.WRKA.BHZ.00 2023-04-23T09:27:13.75 10.0 negative automatic P 172 4758.0039 -1.75955 0.709969
IU.MBWA.BHZ.00 2023-04-23T09:26:38.85 10.0 negative automatic P 184 4292.4033 -1.98329 0.764057
IO.EVN.BHZ. 2023-04-23T09:26:04.45 10.0 positive automatic P 294 3801.9831 0.488889 0
IU.ULN.BHZ.00 2023-04-23T09:25:50.67 10.0 positive automatic P 341 3651.3006 -0.88298 0.869879
AU.KDU.BHZ.00 2023-04-23T09:25:40.15 10.0 positive automatic P 161 3523.6617 -1.04454 0.883411
AU.MTN.BHZ.00 2023-04-23T09:25:37.88 10.0 positive automatic P 163 3496.7109 -1.19872 0.909325
MY.IPM.BHZ. 2023-04-23T09:24:36.27 10.0 positive automatic P 241 2723.385 -0.511763 0.888889
MY.KOM.BHZ. 2023-04-23T09:24:31.22 10.0 positive automatic P 231 2658.1392 -0.167878 0.930233
IU.MAJO.BHZ.00 2023-04-23T09:24:29.22 10.0 positive automatic P 33 2632.3983 -0.108226 0.952381
GE.BNDI.BHZ. 2023-04-23T09:24:25.77 10.0 negative automatic P 160 2574.978 1.63849 0.816327
GE.FAKI.BHZ. 2023-04-23T09:24:19.02 10.0 negative automatic P 153 2507.3457 1.30647 0.888889
II.KAPI.BHZ.00 2023-04-23T09:24:18.42 10.0 positive automatic P 187 2506.9461 0.716312 0.610687
JP.JGF.BHZ. 2023-04-23T09:24:17.20 10.0 negative automatic P 33 2503.3719 -0.210604 0.952381
IU.CHTO.BHZ.00 2023-04-23T09:24:15.42 10.0 positive automatic P 277 2467.5522 1.46497 0.952381
G.INU.BHZ.00 2023-04-23T09:24:13.71 10.0 negative automatic P 33 2462.8791 0.256898 0.888889
JP.JMZ.BHZ. 2023-04-23T09:24:06.60 10.0 negative automatic S 43 1308.0906 -8.61329 0
GE.SANI.BHZ. 2023-04-23T09:23:46.42 10.0 negative automatic P 169 2199.3984 -1.40034 0.740741
JP.JMN.BHZ. 2023-04-23T09:23:45.50 10.0 positive automatic P 30 2144.5311 2.98823 0.888889
GE.LUWI.BHZ. 2023-04-23T09:23:36.37 10.0 negative automatic P 179 2050.9581 3.20319 0.930233
MY.SBM.BHZ. 2023-04-23T09:23:28.67 10.0 positive automatic P 215 1993.4046 1.63302 0.851064
JP.JOW.BHZ. 2023-04-23T09:21:51.25 10.0 positive automatic P 29 1210.2552 -2.21115 0.909091
IU.TATO.BHZ.00 2023-04-23T09:21:09.42 10.0 positive automatic P 354 841.4133 1.51553 0.930233
JP.YOJ.BHZ. 2023-04-23T09:21:00.35 10.0 positive automatic P 5 784.437 -0.486381 0.909091
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