發布時間: 2015 Dec 19 1230 UTC
C-class flares expected, (probability >=50%)
Minor storm expected (A>=30 or K=5)
Quiet
| 10公分通量 | Ap | |
|---|---|---|
| 19 Dec 2015 | 117 | 018 |
| 20 Dec 2015 | 117 | 013 |
| 21 Dec 2015 | 117 | 007 |
The Sun produced two C flares in the past 24 hours. The brightest flare was a C3.1 flare released by NOAA AR 2468, peaking at 2:04 UT on December 19. C flares are possible within the next 24 hours, with a chance (15%) for an M flare. During the past 24 hours, the solar wind speed gradually decreased from about 400 to 350 km/s with intermittent peaks up to 440 km/s. The magnitude of the Interplanetary Magnetic Field varied between 1 and 6 nT. During the past 24 hours, quiet to unsettled geomagnetic levels were registered (K Dourbes between 1 and 3, NOAA Kp between 1 and 3). Due to the expected arrival of the December 16 CMEs, active to minor storm conditions (K Dourbes = 4-5) are expected on December 19, with a chance for moderate to major storm conditions (K Dourbes = 6-7). Quiet to unsettled geomagnetic levels are expected on December 20 and 21, with a chance for active (K Dourbes = 4) excursions.
今日估計的國際太陽黑子數(ISN):049,基於11個觀測站。
| 卡塔尼亞沃爾夫數 | /// |
| 10厘米太陽通量 | 117 |
| AK Chambon La Forêt | 009 |
| AK Wingst | 007 |
| 估計地磁Ap指數 | 005 |
| 估計國際太陽黑子數 | 050 - 基於14個觀測站 |
| 日 | 開始 | 最大值 | 結束 | 位置 | 強度 | OP | 10cm | 卡塔尼亞天體物理觀測站/美國國家海洋暨大氣管理局 | 電波爆發類型 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 無 | ||||||||||
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