Looks like the websites using Sginalr and must have a connectionToken for real-time thunder information, I don't believe these is data is free to use. $ curl 'http://www.cnlightning.cn/signalr/connect?transport=serverSentEvents&clientProtocol=1.5&connectionToken=[redacted]&connectionData=%5B%7B%22name%22%3A%22thunderdatahub%22%7D%5D&tid=0' -H 'User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0' -H 'Accept: text/event-stream' -H 'Accept-Language: en-US,en;q=0.5' --compressed -H 'Referer: http://www.cnlightning.cn/CnlightningBuilder/index.html' -H 'Connection: keep-alive' -H 'Pragma: no-cache' -H 'Cache-Control: no-cache' data: initialized data: {"C":"d-CFA4C47A-B,29F4B|8,13F|9,C","S":1,"M":[]} data: {"C":"d-CFA4C47A-B,29F4C|8,13F|9,C","M":[{"H":"ThunderDataHub","M":"addthunderdata","A":[{"LATITUDE":28.996,"LONGITUDE":105.658,"INTENS":-14.9,"SLOPE":0.0,"ERROR":0.3,"LOCATION":"6","MINISECOND":773345,"PROVINCE":"四川省","DISTRICT":"泸州市","COUNTRY":"泸县","USEDIDS":"201,109,198,197","CG_IC":"IC","HEIGHT":4.036,"DATETIME":"2020-05-05T23:09:03","HOUR":23,"MINUTE":9,"SECOND":3}]}]} data: {"C":"d-CFA4C47A-B,29F4D|8,13F|9,C","M":[{"H":"ThunderDataHub","M":"addthunderdata","A":[{"LATITUDE":28.967,"LONGITUDE":105.638,"INTENS":-25.5,"SLOPE":0.0,"ERROR":9.7,"LOCATION":"6","MINISECOND":249697,"PROVINCE":"四川省","DISTRICT":"泸州市","COUNTRY":"泸县","USEDIDS":"197,36,202,264,110,54,32,103","CG_IC":"IC","HEIGHT":1.652,"DATETIME":"2020-05-05T23:09:03","HOUR":23,"MINUTE":9,"SECOND":3}]}]} data: {"C":"d-CFA4C47A-B,29F4E|8,13F|9,C","M":[{"H":"ThunderDataHub","M":"addthunderdata","A":[{"LATITUDE":27.951,"LONGITUDE":110.318,"INTENS":-16.8,"SLOPE":0.0,"ERROR":0.7,"LOCATION":"6","MINISECOND":6103677,"PROVINCE":"湖南省","DISTRICT":"怀化市","COUNTRY":"辰溪县","USEDIDS":"209,206,101,166,243","CG_IC":"IC","HEIGHT":15.223,"DATETIME":"2020-05-05T23:09:03","HOUR":23,"MINUTE":9,"SECOND":3}]}]} ^C