OnthefirstworkdayaftertheLaborDayholiday,BeijingandothernorthernareasinChinasawanothersandstorm.OnthenightofMay6,theNationalMeteorologicalCentercontinuedtoissueabluewarningforsandstorms,whichforecast13regionsincludingBeijing,Tianjin,andHebeiprovincewouldbehitbyasandstormbetween8p.m.onMay6to8p.m.onMay7.PartsofInnerMongoliawouldexperienceastrongsandstorm.Whyhavenorthernregionsbeencontinuouslyhitbysandstormsthisyear?GuiHailin,chiefforecasterattheNationalMeteorologicalCentersaysitismainlycausedbycoldairgales.Recently,activecoldairinmid-to-highaltitudesinEurasiacontinuedtoheadsouth.Underthisimpact,BeijingencounteredwindyweatherfromMay6to8.WindpowerwasstrongestduringdaytimeonMay6,whichisaccompaniedbysandanddust."Therearemanyweathersystemsthatgeneratestrongwinds,suchassurfacecoldair,cyclone,typhoon,andmeso-tomicro-scaleconvectionsystems.Theyareallcapableofformingwindyweatherprocesses,"saysChenTao,thecenter’schiefforecaster."Thisyear,thehighwindweatheriscloselyrelatedtothecycloneactivitiesinMongolia.Duringspringtime,plateauareasinMongoliahavehigheraveragetemperatureandlowprecipitation.Baregroundwithlittlevegetationwilleasilyformalowpressuresystem.Underthecoordinationofcoldairactivityandotherweatherconditions,strongcyclonedevelopmentcaneasilyforminMongolia.Thisyear,cyclonicactivitiesarequitefrequentinMongolia,whichhasanobviousimpactonthenorthernregionsinourcountry."Aspecialistwiththecentersays,sincespringtimethisyear,thesandstormsinourcountryhavebeenmorefrequentandmoreintensive,thetotalnumberofsandstormsandheavysandstormsrecordedsofarhavebeenthemostsince2013.Thiswillaffectthepunctualandsafeoperationofroads,railways,aircraftsandships.Highwindweatherwillalsobringregionalfloatingdust,flyingsand,orsandstormweather,impactingairqualityandvisibility.Thegeneralpublicshouldpayattentiontothewarninginformationpublishedbythemeteorologicaldepartmentontime,avoidoutdooractivitiesduringhighwindweather.Theelderly,children,andpeoplewithrespiratoryallergiesshouldavoidoutdooractivities.Iftheydo,theyshouldwearmasks,scarves,orotherdustpreventionproducts,andwashtheirfacesandnasalcavitywhentheygetback.Contributedby:YuanYufei,reporterofGuangmingDailyDisclaimerAlldataandinformationprovidedonthissiteisforinformationalpurposesonly.en.gmw.cnmakesnorepresentationsastoaccuracy,suitability,orvalidityofanyinformationonthissiteandwillnotbeliableforanyerrors,omissions,ordelaysinthisinformationoranylosses,injuries,ordamagesarisingfromitsdisplayoruse.Allinformationisprovidedonanas-isbasis.