查看星期日, 31 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 31 1232 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
31 Aug 2025	222	007
01 Sep 2025	222	060
02 Sep 2025	222	023

太陽活動區和耀斑

A total of 10 numbered sunspot groups were identified on the disk over the past 24 hours. Three M-class flares were detected in the last 24 hours. The largest flare was a M2.7 flare (SIDC Flare 5391) peaking on August 30 at 20:02 UTC, which was produced by SIDC Sunspot Group 617 (NOAA Active Region 4199). Solar flaring activity is expected to be moderate over the next 24 hours, with M-class flares possible and a chance for X-class flares.

日冕物質拋射

A halo CME erupted on 30 August, first seen at 20:12 UT on SOHO LASCO C2. The CME was associated with an M2.7 flare from SIDC Sunspot Group 617 (NOAA 4199), located at N04E01 (almost at disk center). This CME is Earth directed, preliminary speeds calculation estimates are about 1600 km/s, with an arrival time around 14:00 UT on 1 September. These values may be updated in the coming hours as the result of ongoing analysis.

日冕洞

SIDC Coronal Hole 122 (equatorial coronal hole with a negative polarity) is in the western hemisphere and its associated high speed solar wind is expected today.

太陽風

The solar wind speed is starting to increase (currently at 450 km/s) as a result of the expected arrival from the high speed solar wind from SIDC Coronal Hole 122. This is a narrow coronal hole, so the associated high speed stream in the coming hours is expected to be short and mild in terms of speed.

地磁

Geomagnetic conditions have been quiet to unsettled (Kp and K_Bel between 0 and 3). Active conditions can be expected for today and up to major storm conditions tomorrow when the CME from 30 August is expected to arrive.

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）：196，基於17個觀測站。

太陽活動指數 30 Aug 2025

卡塔尼亞沃爾夫數	///
10厘米太陽通量	317
AK Chambon La Forêt	014
AK Wingst	006
估計地磁Ap指數	007
估計國際太陽黑子數	196 - 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

<< 回到每日概觀