Earthquake with magnitude of Mwp 7.2 on date 11-08-2021 and time 19:46:15 (Italy) in region Philippines [Sea]

A magnitude Mwp 7.2 earthquake occured in region: Philippines [Sea], on

  • 11-08-2021 17:46:15 (UTC)
  • 11-08-2021 19:46:15 (UTC +02:00) Italian time
  • 12-08-2021 02:46:15 (UTC +09:00) local time in the region of the earthquake (Pacific/Palau)

and geographic coordinates (lat, lon) 6.451, 126.791 at 77 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

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 adjourned progressively as more data become available. See http://shakemap.rm.ingv.it/ for additional information.

The red star indicates the epicenter. The red triangles show the stations of the INGV Italian National Seismic Network and the blue triangles those of the Nationa Accelerometric Network of the Dipartimento della Protezione Civile.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of the istrumentally derived intensities. To this purpose, it is used a conversion relation between ground acceleration and velocity, and the Mercalli Modificata (MMI - Modified Mercalli Intensity) scale. In general, the Mercalli intensity scale relies on the effects that the ground shaking produces as reported by an observer.
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows This map shows the distribution of peak ground acceleration expressed as per cent 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 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
Reviewed
Rev100
mb 5.7
Mwp 7.2

Mwpd 7.2
2021-08-11
17:46:15
6.4512 126.791 77 2021-08-11
17:59:51
Sala Sismica INGV-Roma 93976151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-11 17:46:15
Latitude 6.4512
Longitude 126.7910
Depth (km) 77 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 93976151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 6065
Semi-minor axis of confidence ellipse (meter) 4428
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 65
Circular confidence region, given by single value of horizontal uncertainty (meter) 6043.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 43.9992
Number of associated phases, regardless of their use for origin computation 82
Number of defining phases 82
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.77488
Epicentral distance of station closest to the epicenter (degree) 1.35307
Epicentral distance of station farthest from the epicenter (degree) 74.9082
Number of stations at which the event was observed 77
Number of stations from which data was used for origin computation 77
Magnitudes information

Mwp:7.2

Field Value
Value 7.2
Uncertainty 0.1
Num. used stations 58
Type of magnitude Mwp
Reference to an origin 93976151
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-08-11 17:59:51

Mwpd:7.2

Field Value
Value 7.2
Uncertainty 0.1
Num. used stations 43
Type of magnitude Mwpd
Reference to an origin 93976151
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-08-11 17:59:51

mb:5.7

Field Value
Value 5.7
Uncertainty 0.1
Num. used stations 57
Type of magnitude mb
Reference to an origin 93976151
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-08-11 17:59:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
G.RER.BHZ.00 2021-08-11T17:57:49.20 10.0 positive automatic P 246 74.9082 1.59579 0.215416
IU.CASY.BHZ.00 2021-08-11T17:57:39.72 10.0 positive automatic P 187 73.6836 -0.629371 0
AU.MCQ.BHZ.00 2021-08-11T17:57:11.70 10.0 negative automatic pP 160 66.6057 -5.40284 0
NZ.ODZ.HHZ.10 2021-08-11T17:56:59.64 10.0 negative automatic pP 147 64.7339 -5.37041 0
IU.BILL.BHZ.00 2021-08-11T17:56:58.32 10.0 positive automatic P 15 67.0444 -1.61153 0
NZ.KHZ.HHZ.10 2021-08-11T17:56:44.47 10.0 positive automatic P 144 64.7275 -0.540922 0.348111
IU.ADK.BHZ.00 2021-08-11T17:56:44.85 10.0 positive automatic P 35 64.7378 -0.244707 0.330576
II.SIMI.BHZ.00 2021-08-11T17:56:20.50 10.0 positive automatic P 311 61.059 -0.168548 0.365811
II.AAK.BHZ.00 2021-08-11T17:56:19.27 10.0 negative automatic pP 317 58.4529 -3.40511 0
II.MSVF.BHZ.00 2021-08-11T17:56:11.67 10.0 positive automatic sP 116 56.0817 -2.22586 0
II.MSVF.BHZ.00 2021-08-11T17:56:05.92 10.0 negative automatic pP 116 56.0817 0.214071 0
II.KURK.BHZ.00 2021-08-11T17:56:08.95 10.0 positive automatic P 327 59.5623 -1.54293 0.427777
IU.MIDW.BHZ.00 2021-08-11T17:56:08.87 10.0 negative automatic pP 60 56.9877 -3.18168 0
II.AAK.BHZ.00 2021-08-11T17:56:03.42 10.0 positive automatic P 317 58.4529 0.352862 0.404822
IU.MA2.BHZ.00 2021-08-11T17:55:46.47 10.0 positive automatic P 14 56.173 -0.326573 0.215944
IU.MAKZ.BHZ.00 2021-08-11T17:55:42.57 10.0 positive automatic P 324 55.6379 -0.448867 0.459662
AU.NFK.BHZ.00 2021-08-11T17:55:41.72 10.0 negative automatic pP 134 53.1557 -2.54848 0
IU.YAK.BHZ.00 2021-08-11T17:55:40.92 10.0 positive automatic P 2 55.6185 -1.87444 0.476378
IU.PET.BHZ.00 2021-08-11T17:55:25.72 10.0 positive automatic P 23 53.3137 -0.374995 0.422079
AU.MILA.BHZ.00 2021-08-11T17:55:02.03 10.0 negative automatic pP 156 48.2651 -5.29804 0
II.TLY.BHZ.00 2021-08-11T17:54:54.22 10.0 positive automatic P 341 49.1032 -0.456351 0.568437
AU.RIV.BHZ. 2021-08-11T17:54:47.62 10.0 positive automatic pP 152 46.4188 -5.13254 0
AU.TOO.BHZ.00 2021-08-11T17:54:41.93 10.0 positive automatic P 160 47.3499 0.742845 0.619566
G.CAN.BHZ.00 2021-08-11T17:54:37.15 10.0 negative automatic P 155 46.7076 0.951385 0.638658
GE.MALK.BHZ. 2021-08-11T17:54:30.17 10.0 positive automatic P 275 45.8755 0.595453 0.638196
II.PALK.BHZ.00 2021-08-11T17:54:29.35 10.0 negative automatic P 274 45.7448 0.739384 0.597825
GE.HALK.BHZ. 2021-08-11T17:54:29.70 10.0 negative automatic P 272 45.8182 0.577035 0.624351
IU.ULN.BHZ.00 2021-08-11T17:54:19.42 10.0 positive automatic P 341 44.6992 -1.10736 0.576913
AU.ARMA.BHZ. 2021-08-11T17:54:14.27 10.0 positive automatic P 148 43.8825 0.343019 0.674206
IU.YSS.BHZ.00 2021-08-11T17:54:04.20 10.0 positive automatic P 16 42.7628 -0.546453 0
AU.HTT.BHZ. 2021-08-11T17:53:53.00 10.0 positive automatic P 165 41.5071 -0.636923 0.709965
IU.WAKE.BHZ.00 2021-08-11T17:53:52.97 10.0 positive automatic P 68 40.7931 4.31498 0.698709
IU.NWAO.BHZ.00 2021-08-11T17:53:44.45 10.0 positive automatic P 192 40.4101 -1.12166 0.75734
JP.JKA.BHZ. 2021-08-11T17:53:43.00 10.0 positive automatic pP 20 37.4209 4.04433 0
AU.EIDS.BHZ. 2021-08-11T17:53:39.40 10.0 negative automatic P 144 39.6246 0.358444 0.754451
AU.QLP.BHZ. 2021-08-11T17:53:16.27 10.0 negative automatic P 154 37.1091 -1.66375 0.813667
AU.MORW.BHZ. 2021-08-11T17:53:15.40 10.0 negative automatic P 196 36.9943 -1.58245 0.825941
IU.CTAO.BHZ.00 2021-08-11T17:52:41.85 10.0 positive automatic P 145 32.7212 1.64217 0.894141
AU.GIRL.BHZ.00 2021-08-11T17:52:31.18 10.0 negative automatic P 203 31.5813 0.996889 0.896989
IU.MAJO.BHZ.00 2021-08-11T17:52:30.87 10.0 positive automatic P 18 31.8506 -1.71921 0.851758
AU.WRKA.BHZ.00 2021-08-11T17:52:29.33 10.0 negative automatic P 177 31.5213 -0.413652 0.930708
JP.JGF.BHZ. 2021-08-11T17:52:21.20 10.0 positive automatic P 17 30.7233 -1.50877 0.432359
JP.JSG.BHZ. 2021-08-11T17:52:19.25 10.0 positive automatic P 19 30.1176 1.97168 0.927811
G.INU.BHZ.00 2021-08-11T17:52:18.36 10.0 positive automatic P 17 30.3923 -1.34662 0.94394
IU.CHTO.BHZ.00 2021-08-11T17:52:14.45 10.0 positive automatic P 297 29.784 0.0598102 0.851064
GE.GSI.BHZ. 2021-08-11T17:52:10.77 10.0 positive automatic P 261 29.587 -1.8176 0.930233
IU.MBWA.BHZ.00 2021-08-11T17:52:01.52 10.0 positive automatic P 194 28.4652 -1.139 0.963855
JP.JMN.BHZ. 2021-08-11T17:51:58.15 10.0 positive automatic P 13 28.0578 -0.947936 0.952381
II.WRAB.BHZ.00 2021-08-11T17:51:51.52 10.0 negative automatic P 164 27.4143 -1.81001 0.91954
GE.BKNI.BHZ. 2021-08-11T17:51:48.47 10.0 positive automatic P 258 26.412 4.18435 0.952381
RM.SLV.BHZ. 2021-08-11T17:51:47.12 10.0 positive automatic P 306 26.6648 0.465829 0.888889
JP.JCJ.BHZ. 2021-08-11T17:51:33.50 10.0 positive automatic P 34 25.3031 -0.769929 0.952381
JP.JSU.BHZ. 2021-08-11T17:51:32.05 10.0 positive automatic P 7 25.29 -2.14422 0.909091
AU.FITZ.BHZ. 2021-08-11T17:51:27.08 10.0 positive automatic P 183 24.5784 -0.612752 0.963855
GE.PMBI.BHZ. 2021-08-11T17:51:21.77 10.0 negative automatic P 248 23.9566 -0.239635 0.851064
AU.MANU.BHZ.00 2021-08-11T17:51:08.45 10.0 positive automatic P 112 22.2269 3.29641 0.930233
JP.JMZ.BHZ. 2021-08-11T17:50:48.70 10.0 negative automatic sP 12 19.8248 -6.19579 0
JP.JOW.BHZ. 2021-08-11T17:50:46.10 10.0 positive automatic P 4 20.4326 0.115851 0.930233
RM.DLV.BHZ. 2021-08-11T17:50:40.57 10.0 positive automatic sP 288 18.8826 -4.16068 0
AU.KDU.BHZ.00 2021-08-11T17:50:39.48 10.0 negative automatic P 164 19.9528 -1.2868 0.824742
AU.MTN.BHZ.00 2021-08-11T17:50:37.38 10.0 negative automatic P 167 19.7703 -1.42587 0.824742
GE.JAGI.BHZ. 2021-08-11T17:50:37.27 10.0 positive automatic P 220 19.5295 1.08025 0.930233
IU.GUMO.BHZ.00 2021-08-11T17:50:35.22 10.0 positive automatic P 67 19.1648 3.00367 0.833333
IU.TATO.BHZ.00 2021-08-11T17:50:28.72 10.0 positive automatic P 345 19.2024 -3.90459 0.43956
JP.YOJ.BHZ. 2021-08-11T17:50:21.35 10.0 positive automatic P 349 18.3762 -2.21257 0.43956
GE.SOEI.BHZ. 2021-08-11T17:50:01.92 10.0 negative automatic P 189 16.3997 1.46731 0.909091
GE.GENI.BHZ. 2021-08-11T17:49:58.77 10.0 negative automatic P 124 16.1286 1.87103 0.851064
GE.MMRI.BHZ. 2021-08-11T17:49:51.07 10.0 negative automatic P 197 15.7543 -1.1453 0.555556
GE.SAUI.BHZ. 2021-08-11T17:49:46.57 10.0 negative automatic P 163 15.1169 2.44336 0.43956
MY.SBM.BHZ. 2021-08-11T17:49:44.72 10.0 positive automatic P 255 15.0692 1.18238 0.97561
II.KAPI.BHZ.00 2021-08-11T17:49:20.55 10.0 negative automatic P 212 13.4468 -1.89044 0.851064
GE.BKB.BHZ. 2021-08-11T17:49:11.57 10.0 negative automatic P 233 12.4298 2.75525 0.930233
GE.BNDI.BHZ. 2021-08-11T17:48:54.12 10.0 negative automatic P 164 11.4048 -0.72278 0.816327
GE.FAKI.BHZ. 2021-08-11T17:48:46.67 10.0 positive automatic P 150 10.8392 -0.488436 0.930233
GE.LUWI.BHZ. 2021-08-11T17:48:15.52 10.0 positive automatic P 208 8.4991 0.301664 0.888889
MY.LDM.BHZ. 2021-08-11T17:48:14.72 10.0 negative automatic P 262 8.3474 1.53919 0.909091
GE.SANI.BHZ. 2021-08-11T17:48:11.72 10.0 positive automatic P 185 8.5381 -4.03606 0.930233
GE.TNTI.BHZ. 2021-08-11T17:47:36.52 10.0 positive automatic P 174 5.7081 -0.601303 0.851064
IU.DAV.BHZ.00 2021-08-11T17:46:39.10 10.0 negative automatic P 297 1.3531 0.833803 0.952381
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