查看星期三, 20 1月 2021歷史檔案

SIDC 太陽影響數據分析中心的每日公告

發布時間: 2021 Jan 20 1230 UTC

SIDC太陽影響數據分析中心的預報

太陽閃焰

Quiet conditions (<50% probability of C-class flares)

地磁

Quiet (A<20 and K<4)

太陽質子

Quiet

公告

During last 24 hours the solar flaring activity slightly increased. Several B-class and an isolated C-class flares were reported, all originating from the NOAA AR 2797. The impulsive C1.0 flare peaked at 17:54 UT on January 19. Presently available coronagraph observations (there is a large data gap in observations) do not show signatures of the possibly associated CME. We expect such a level of flaring activity to persist in the coming hours. During last 24 hours no Earth directed CMEs were observed in coronagraph data, and proton flux levels remained at background values.

The solar wind speed is presently around 340 km/s and the interplanetary magnetic field magnitude is about 6 nT. The geomagnetic conditions are presently quiet and we expect quiet to unsettled geomagnetic conditions in the coming hours.

太陽活動指數 19 Jan 2021

顯著活動摘要

由太陽影響數據分析中心提供© - SIDC - 由 SpaceWeatherLive處理

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