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近日，甘肃省白银市景泰县黄河石林景区举行的山地马拉松百公里越野赛遭遇极端天气，参赛人员出现失温等情况，导致21人遇难。

无注释原文：

Twenty-onedeadasextremeweatherhitsultramarathoninChina

TheGuardian

Twenty-onepeoplehavediedafterhail,freezingrainandhighwindshitrunnerstakingpartinakm(62-mile)ultramarathoninamountainouspartofnorthernChina.

Morethanrescuersandarmypersonnelusedthermal-imagingdronesandradardetectorstotrytofindrunnerscaughtbythestormintheraceinYellowRiverstoneforestnearBaiyininnorth-westernGansuprovince,officialssaid.

Twenty-onepeoplediedandeightwereinjured,officialsfromBaiyintoldanewsbriefing.

“Ataroundnoon,thehigh-altitudesectionoftheracebetween20-31kmwassuddenlyaffectedbydisastrousweather.Inashortperiodoftime,hailstonesandicerainsuddenlyfellinthelocalarea,andtherewerestrongwinds.Thetemperaturesharplydropped,”Baiyincitymayor,ZhangXuchen,saidonSunday.

Rescueteamsweredispatchedbutataround2pm,weatherconditionsworsenedandtheracewasimmediatelycalledoffaslocalauthoritiessentmorerescuerstohelp,Zhangadded.

“Thisincidentisapublicsafetyincidentcausedbysuddenchangesinweatherinalocalarea,”hesaid,addingthatprovincialauthoritieswillfurtherinvestigateitscause.

TemperaturesinthemountainousterraindroppedfurtherovernightonSaturday,Xinhuanewsagencysaid,makingsearchandrescue“moredifficult”.

A“significant”dropintemperatureshadbeenforecastinmostpartsofGansuovertheweekendbuttherewasangeronChinesesocialmediathatofficialshadfailedtoplanforbadweather.

“Whydidn’tthegovernmentreadtheweatherforecastanddoariskassessment?”one