查看星期四, 10 4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 Apr 10 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

Active conditions expected (A>=20 or K=4)

太陽質子

Quiet

	10公分通量	Ap
10 Apr 2025	168	013
11 Apr 2025	170	015
12 Apr 2025	172	014

太陽活動區和耀斑

Solar flaring activity was at low levels over the past 24 hours with background C-class flaring. A total of 9 numbered sunspot groups were identified on the visible solar disk. The most complex regions are SIDC Sunspot Group 461 (NOAA Active Region 4048) and SIDC Sunspot Group 469 (NOAA Active Region 4055), both classified as beta- gamma. SIDC Sunspot Group 469, together with the newly rotated region from the east limb, contributed to most of the flaring activity over the past 24 hours. The solar flaring activity is expected to remain at low levels with possible M-class flares over the next 24 hours.

日冕物質拋射

No Earth-directed coronal mass ejections (CMEs) are observed in the available coronagraph imagery over the past 24 hours.

日冕洞

The negative polarity coronal hole which first crossed the central meridian on April 07 continues to partly reside there. High speed stream emanating from it might be expected at Earth starting on April 10.

太陽風

Over the past 24 hours the solar wind parameters (ACE and DSCOVR) reflected mildly enhanced conditions under the ongoing influence of a high speed stream. The magnitude of the interplanetary magnetic field (B) remained below 10 nT with a minimum Bz component reaching -7 nT. The solar wind speed was predominantly around 500 km/s with periods reaching 600 km/s. The B field phi angle was entirely in the negative sector (directed towards the Sun). The solar wind conditions are expected to remain enhanced over the next few days under the anticipated influence of an high speed stream.

地磁

The geomagnetic conditions over the past 24 hours were predominantly unsettled to active. Quiet to active geomagnetic conditions are expected for the next 24 hours with chances for isolated minor storms due to ongoing high speed stream arrivals. Quiet to active conditions are expected to continue on April 11 and April 12.

質子通量水平

Over the past 24 hours the greater than 10 MeV GOES proton flux has been at nominal levels and is expected to remain so over the next days.

地球靜止軌道上的電子通量

The greater than 10 MeV GOES 18 electron fluxes has exceeded the 1000 pfu threshold over the last 24 hours and is expected to exceed the 1000 pfu threshold in the next 24 hours. The 24-hour electron fluence was at moderate levels and is expected to be at the border of moderate to nominal levels in the next 24 hours.

今日估計的國際太陽黑子數（ISN）：130，基於18個觀測站。

太陽活動指數 09 Apr 2025

卡塔尼亞沃爾夫數	182
10厘米太陽通量	167
AK Chambon La Forêt	///
AK Wingst	016
估計地磁Ap指數	022
估計國際太陽黑子數	136 - 基於26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

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