查看星期四, 28 8月 2025歷史檔案

SIDC 太陽影響數據分析中心的每日公告

發布時間: 2025 Aug 28 1231 UTC

SIDC太陽影響數據分析中心的預報

太陽閃焰

M-class flares expected (probability >=50%)

地磁

Quiet (A<20 and K<4)

太陽質子

Quiet

	10公分通量	Ap
28 Aug 2025	226	007
29 Aug 2025	226	007
30 Aug 2025	226	007

太陽活動區和耀斑

Solar flaring activity was low over the past 24 hours, with only C-class flares identified. The largest flare was a C9.2 flare (SIDC Flare 5247) peaking on August 27 at 12:50 UTC, which was produced by SIDC Sunspot Group 617 (NOAA Active Region 4199). A total of 14 numbered sunspot groups were identified on the disk over the past 24 hours. Solar flaring activity is expected to be low to moderate over the next 24 hours, with C-class flares expected and a chance for M-class flares.

日冕物質拋射

No Earth-directed Coronal Mass Ejections (CMEs) have been observed in the last 24 hours.

太陽風

The Earth is inside slow solar wind with speeds around 400 km/s and interplanetary magnetic fields of about 7 nT (directed towards the Sun, negative polarity). Similar conditions can be expected for the coming 24 hours.

地磁

Geomagnetic conditions have been quiet to unsettled (Kp and B_Bel between 0 and 3). Similar conditions are expected for the next 24 hours.

質子通量水平

The greater than 10 MeV proton flux returned to nominal levels (below the 10 pfu threshold) at 15:30 UT on 27 August. It is expected to remain at nominal levels.

地球靜止軌道上的電子通量

The greater than 2 MeV electron flux as measured by GOES 18 and 19 remained below the 1000 pfu alert threshold, similar conditions expected for the next 24 hours. The 24 h electron fluence was at normal levels and is expected to remain so.

今日估計的國際太陽黑子數（ISN）：209，基於10個觀測站。

太陽活動指數 27 Aug 2025

卡塔尼亞沃爾夫數	173
10厘米太陽通量	226
AK Chambon La Forêt	016
AK Wingst	009
估計地磁Ap指數	009
估計國際太陽黑子數	207 - 基於20個觀測站

顯著活動摘要

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

所有時間均採用 UTC 時間

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