Editing Earthquake swarm (section)

==== Philippines ====
* An earthquake swarm occurred from early April 2017 to mid August 2017 in the province of [[Batangas]]. Four shocks in the 5.5–6.3 magnitude range ([[2017 Batangas earthquakes]]) caused damage in southern [[Luzon]]; they occurred at the beginning of the swarm: [[Surface wave magnitude|''M''<sub>s</sub>]]5.5 (4 April), ''M''<sub>s</sub>5.6 and ''M''<sub>s</sub>6.0 (8 April), and ''M''<sub>s</sub>6.3 (11 April).<ref>{{Cite web|url=https://newsinfo.inquirer.net/887643/batangas-tremors-part-of-earthquake-swarm-says-philvolcs|title=Batangas tremors part of 'earthquake swarm,' says Phivolcs|date=2017-04-08|last=Gamil|first=Jaymee|website=newsinfo.inquirer.net|access-date=2019-09-04}}</ref> The origin of the 3 first major quakes seems established since they had practically the same epicentre; they occurred within the crust ({{Convert|7–28|km|4=0|abbr=on|adj=on}} depth range). However, the strongest and latest quake does not seem related to the swarm: its epicentre is {{Convert|50|km|abbr=on|sigfig=1}} away, and its [[depth of focus (tectonics)|focal depth]] is moreover very different ({{Convert|177|km|abbr=on}}, according to [[Phivolcs]], the local seismic monitoring agency, a value which classifies this quake as an "intermediate-depth event"). This example shows how complex can be the interaction between a swarm and an independent earthquake, even though this last one is very likely to have been triggered by the swarm activity.
* October 15, 2020, an earthquake swarm occurred on the island of [[Panay]] ranging from magnitudes 2.5-4.5. Most of these quakes felt in Iloilo City.<ref>[https://www.panaynews.net/quake-swarm-hits-iloilo-antique/ Quake ‘swarm’ hits Iloilo, Antique] panaynews.net October 17, 2020</ref> A previous swarm also hit Panay on November 5, 2018 (Including [[Antique (province)|Antique]], [[Iloilo]] and [[Guimaras]]) ranging from magnitudes 4.0-4.8. The first earthquake (magnitude 4.7) at 7:45 A.M, occurred at [[San Jose, Antique]]. Just a few minutes after, the second quake (magnitude 4.0) occurred at [[Sibunag, Guimaras]]. At 10:54 A.M, The third quake (magnitude 4.8) occurred at [[Guimbal, Iloilo]]. Intensity 4 was felt in [[Iloilo City]]<ref>[https://www.cnnphilippines.com/news/2018/11/05/magnitude-four-earthquakes-panay-island-iloilo-city.html Series of earthquakes hit parts of Panay island Monday] {{Webarchive|url=https://web.archive.org/web/20220916010113/https://www.cnnphilippines.com/news/2018/11/05/magnitude-four-earthquakes-panay-island-iloilo-city.html |date=2022-09-16 }} [[CNN Philippines|cnnphilippines.com]] Published Nov 6, 2018 1:05:01 AM</ref>
* A [[2019 Cotabato earthquakes|series of earthquakes that hit Mindanao]] in 2019 were classified as an earthquake swarm.<ref>{{Cite web|last=Cruz|first=Divina Nova Joy Dela|date=2019-11-01|title=Quake 'swarm' hits Mindanao|url=https://www.manilatimes.net/2019/11/01/news/headlines/quake-swarm-hits-mindanao/652589|access-date=2022-09-27|website=The Manila Times}}</ref><br>On October 16, a magnitude 6.3 ([[Seismic magnitude scales#Mwp|M<sub>wp</sub>]]) Struck Tulunan cotabato (Epicenter of earthquake). [[PHIVOLCS earthquake intensity scale|Intensity VII]] was felt in [[Tulunan]], [[M'lang]], [[Makilala]] and [[Kidapawan]] City, [[Cotabato]]. Intensity VI was felt in [[Digos]] City, [[Davao del Sur]]; [[Santo Niño, South Cotabato]] and [[Tacurong]] City, [[Sultan Kudarat]].<ref>[https://earthquake.phivolcs.dost.gov.ph/2019_Earthquake_Information/October/2019_1016_1137_B3F.html "Earthquake Information – 16 Oct 2019 – 07:37:04 PM"]. [[Philippine Institute of Volcanology and Seismology|PHIVOLCS]]. Archived from the original on December 2, 2019. Retrieved October 16, 2019.</ref> On October 29, a magnitude 6.6 ([[Seismic magnitude scales|M<sub>ww</sub>]]) struck Tulunan again. At least ten deaths were reported and four hundred individuals were injured.<ref name="NDRRMC_SitRep_08_M6.6_M6.5">{{Cite web|last=[[National Disaster Risk Reduction and Management Council]]|date=2 November 2019|title=NDRRMC Update: SitRep No. 08 regarding Magnitude 6.6 and 6.5 Earthquakes in Tulunan, Nurth Cotabato|url=https://reliefweb.int/sites/reliefweb.int/files/resources/SitRep_No_06_re_Magnitude_6point6_and_6point5_Earthquakes_in_Tulunan_North_Cotabato_as_of_01Nov2019_8AM.pdf|access-date=2 November 2019}}</ref> Intensity VII was recorded in Tulunan and Makilala; Kidapawan City; Digos City, [[Bansalan]] and [[Magsaysay, Davao del Sur]] and [[Malungon, Sarangani]]. Intensity VI was recorded in [[Koronadal]] City and [[Davao City]].<ref>1. [https://web.archive.org/web/20191031072358/http://earthquake.phivolcs.dost.gov.ph/2019_Earthquake_Information/October/2019_1029_0104_B3F.html "Earthquake Information – 29 Oct 2019 – 09:04:43 AM".] [[Philippine Institute of Volcanology and Seismology|PHIVOLCS]]. Archived from the original on October 31, 2019. Retrieved October 29, 2019.</ref> Just 2 days after on October 31, an earthquake struck Tulunan again (Magnitude 6.5[[Seismic magnitude scales|M<sub>ww</sub>]]) The death toll of two quakes was raised into 24 and 563 were injured.<ref name="SitRep_30">{{Cite web|last=[[National Disaster Risk Reduction and Management Council]]|date=November 20, 2019|title=NDRRMC Update: SitRep No. 30 regarding Magnitude 6.6 and 6.5 Earthquakes in Tulunan, North Cotabato|url=https://reliefweb.int/sites/reliefweb.int/files/resources/Update_SitRep_no_30_re_Mag_6_6_and_6_5_Earthquakes_in_Tulunan_North_Cotabato_as_of_20_November_2019_6AM.pdf|access-date=November 20, 2019}}</ref> Eva's Hotel in Kidapawan City collapsed during the quake<ref>{{cite news|date=October 31, 2019|title=Kidapawan hotel nearly collapses after magnitude 6.5 quake, several injured|work=ABS-CBN News|url=https://news.abs-cbn.com/news/10/31/19/kidapawan-hotel-devastated-after-magnitude-65-quake|access-date=November 4, 2019}}</ref>
* On October 14-18 2021 an earthquake swarm occurred on [[Camarines Sur]] ranging from magnitudes 1.7-4.3 with the depth of 1–40&nbsp;km. Some of these events were felt on [[Camarines Norte]] and [[Albay]]. PHIVOLCS recorded at least 27 earthquakes (10 were felt) in Camarines Sur.<ref>{{Cite web|date=2021-10-18|title=Series of tremors in CamSur considered as 'earthquake swarm' -- Phivolcs|url=https://mb.com.ph/2021/10/18/series-of-tremors-in-camsur-considered-as-earthquake-swarm-phivolcs/|access-date=2022-09-16|website=Manila Bulletin}}</ref>