查看星期六, 30 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 30 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
30 Aug 2025	222	007
31 Aug 2025	218	007
01 Sep 2025	214	007

太陽活動區和耀斑

A total of 14 numbered sunspot groups were identified on the disk over the past 24 hours. Only C-class flaring was observed. The largest flare was a C5.0 flare (SIDC Flare 5302) peaking on August 29 at 17:10 UTC, which was produced by SIDC Sunspot Group 614 (NOAA Active Region 4197). This is the most complex sunspot group currently visible, with beta-gamma-delta magnetic field configuration, located at S17E04. Solar flaring activity is expected to be moderate over the next 24 hours, with C-class flares expected and M-class flares likely.

日冕物質拋射

No Earth-directed Coronal Mass Ejections (CMEs) have been observed in the last 24 hours. A slow partial halo CME was seen erupting towards the southwest in LASCO C2 data at 16:48 UTC on 29 August. This CME is backsided and will not arrive to the Earth.

日冕洞

A narrow equatorial negative polarity coronal hole (SIDC Coronal Hole 122) crossed central meridian on 28 August, its associated high speed stream may be expected at the Earth late on 31 August.

太陽風

The Earth is inside slow solar wind with speeds around 380 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, with a high speed stream expected to arrive after that.

地磁

Geomagnetic conditions have been quiet to unsettled (Kp between 0 and 2 and K_Bel 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 has been below the 10 pfu threshold in the last 24 hours. 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）：194，基於14個觀測站。

太陽活動指數 29 Aug 2025

卡塔尼亞沃爾夫數	204
10厘米太陽通量	222
AK Chambon La Forêt	009
AK Wingst	008
估計地磁Ap指數	007
估計國際太陽黑子數	209 - 基於24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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