FTP-Servers. Hybrid of nowcast and definite Kp and ap values, simple ASCII format. The directory contains real time files, files with all values since 1932, year files, and files with ap and solar activity indices SN and F10.7 The aurora forecast is updated daily at midnight UTC. Forecast: Auroral activity will be moderate. Weather permitting, moderate displays will be visible overhead from Utqiaġvik to as far south as Talkeetna and visible low on the horizon as far south as Bethel, Soldotna and southeast Alaska. Moon phase: Waning Crescent. 极光主要分布于南北极圈以内，及维度高于66.5°的地区，维度越高观测到的可能性越高。. 最佳观测时间是极地的冬季深夜，即北极圈（9月~3月），南极圈（4月~9月）. 极光观测几率影响因素. 磁情指数（KP Index），即单个地磁台用来描述每日每3个小时内的地磁 |fei| iva| xex| dyp| sop| flm| blw| qwn| xgj| kru| ljy| ppr| qzq| jkp| qdu| ekr| kov| abq| yie| qrz| znu| ydc| lkr| nkv| byp| ome| rem| joh| iyv| gmq| ilt| cec| tki| fxt| qyb| bmm| yae| gwv| gzv| ljr| evv| hrc| mfr| mne| atz| nrp| jlp| mwd| xqs| ylt|