查看星期五, 21 2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 Feb 21 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
21 Feb 2025	184	008
22 Feb 2025	184	007
23 Feb 2025	184	007

太陽活動區和耀斑

A total of 8 numbered sunspot groups were identified on the disk over the past 24 hours. Solar flaring activity was low over the past 24 hours, with only C-class flares identified. The largest flare was a C4.9 flare (SIDC Flare 3663) peaking on February 20 at 15:01 UTC, which was produced by SIDC Sunspot Group 405 (NOAA Active Region 3996). 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

A wide CME erupting towards the west was seen on 20 February at 00:24 UTC (first seen by LASCO C2), related to a C8.1 flare and a type-II radio burst. The CME speed is estimated to be around 400 km/s, a glancing blow from this CME may be observed at Earth on 24 February. A filament erupted then in the SE quadrant, leading to a CME seen at 10:00 UT on 20 February, that is not expected to arrive to the Earth.

太陽風

The solar wind speed at Earth has decreased to 350 km/s in the last 24 hours, with an interplanetary magnetic field currently around 5 nT. Similar slow solar wind conditions can be expected for the next 24 hours.

地磁

Geomagnetic conditions have been quiet to unsettled globally and locally (Kp and K_Bel up to 3). Similar conditions can be expected for the next 24 hours.

質子通量水平

The greater than 10 MeV proton flux was below the threshold level over the past 24 hours. It is expected to remain below the threshold level over the next 24 hours.

地球靜止軌道上的電子通量

The greater than 10 MeV GOES 16 and 18 electron flux has been below the threshold in the last 24 hours It is expected to remain below the threshold in the next 24 hours. The 24-hour electron fluence is currently at normal levels and is expected to remain so in the next 24 hours.

今日估計的國際太陽黑子數（ISN）：160，基於13個觀測站。

太陽活動指數 20 Feb 2025

卡塔尼亞沃爾夫數	///
10厘米太陽通量	184
AK Chambon La Forêt	009
AK Wingst	008
估計地磁Ap指數	006
估計國際太陽黑子數	136 - 基於11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