查看星期五, 11 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 11 1252 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
11 Apr 2025	155	018
12 Apr 2025	157	012
13 Apr 2025	157	015

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 8 numbered sunspot groups were identified on the disk over the past 24 hours. The most complex regions are SIDC Sunspot Group 461 (NOAA Active Region 4048), which is now approaching the west limb, SIDC Sunspot Group 469 (NOAA Active Region 4055) and SIDC Sunspot Group 470 (NOAA Active Region 4058), which have both exhibited further growth and flux emergence. These three regions are classified as magnetic type beta-gamma. The largest flare was a C4.4 flare (SIDC Flare 4073) peaking on April 11 at 07:14 UTC, produced by SIDC Sunspot Group 469, which contributed to most of the flaring activity over the past 24 hours. The solar flaring activity is expected to remain at low levels to moderate levels with likely M-class flaring 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 reflecting mild connection a high speed stream emanating from a negative polarity coronal hole. The magnitude of the interplanetary magnetic field (B) reached a maximum value of 8 nT with a minimum Bz of -7.5 nT. The solar wind speed varied at close to 500 km/s. The B field phi angle was predominantly in the negative sector (directed towards the Sun). The solar wind conditions are expected to remain enhanced over the next few days under the influence of a high speed stream.

地磁

The geomagnetic conditions over the past 24 hours were quiet to active. Predominantly quiet to active geomagnetic conditions with remaining chances for isolated minor storms are expected for the next days.

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 remain so in the next 24 hours.

今日估計的國際太陽黑子數（ISN）：125，基於29個觀測站。

太陽活動指數 10 Apr 2025

卡塔尼亞沃爾夫數	155
10厘米太陽通量	153
AK Chambon La Forêt	028
AK Wingst	018
估計地磁Ap指數	018
估計國際太陽黑子數	132 - 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

所有時間均採用 UTC 時間

<< 回到每日概觀