查看星期四, 23 4月 2026歷史檔案

SIDC 太陽影響數據分析中心的每日公告

發布時間: 2026 Apr 23 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
23 Apr 2026	120	008
24 Apr 2026	124	010
25 Apr 2026	128	013

太陽活動區和耀斑

Solar flaring activity was moderate over the past 24 hours, with 2 M-class flares identified. A total of 5 numbered sunspot groups were identified on the disk over the past 24 hours. SIDC Sunspot Group 847 (NOAA Active Region 4420) has the most magnetically complex configuration (Beta-Gamma-Delta). The largest flare was a M1.6 flare (SIDC Flare 7456) peaking on April 23 at 04:35 UTC, which was produced by SIDC Sunspot Group 825 (NOAA Active Regions 4397, 4419), which produced most of the flaring activity in the last 24 hours. The second- largest flare was a M1.2 flare (SIDC Flare 7457) peaking on April 23 at 04:59 UTC produced by SIDC Sunspot Group 847 (NOAA Active Region 4420). Solar flaring activity is expected to be moderate over the next 24 hours, with M-class flares likely and a small chance for X-class flares.

日冕物質拋射

A Coronal Mass Ejection (CME) was observed LASCO-C2 data around 05:24 UTC on April 23. This CME is associated with M1.6 flare (SIDC Flare 7456) peaking on April 23 at 04:35 UTC, with a speed of around 800 km/s. A glancing blow arrival is expected on April 26 around 20:00 UTC.

日冕洞

SIDC Coronal Hole 157 (equatorial coronal hole extending to the polar south with a positive polarity) and SIDC Coronal Hole 156 (equatorial coronal hole with a positive polarity) are continuing to cross the central meridian.

太陽風

Slow solar wind conditions were recorded over the past 24 hours. The solar wind speed ranged between 432 km/s to 520 km /s. The total interplanetary magnetic field ranged from 3 to 6 nT, with the Bz reaching a minimum of -5 nT. The phi-angle was mainly in the negative sector (directed towards the Sun), with periods in the positive sector. Quite solar wind conditions are expected in the next 24 hours.

地磁

The geomagnetic conditions were quiet to unsettles (Kp 1-3 & K BEL 1-3) in the last 24 hours. Quiet to unsettled conditions are expected over the next 24 hours.

質子通量水平

The greater than 10 MeV GOES proton flux was at background levels and is expected to remain at background levels over the next 24 hours.

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 GOES-19 was above the 1000 pfu alert threshold in the past 24 hours. The flux is expected to fluctuate around the alert threshold over the next 24 hours. The 24-hour electron fluence was at moderate levels over the past 24 hours and is expected to remain at these levels over the next 24 hours.

今日估計的國際太陽黑子數（ISN）：072，基於23個觀測站。

太陽活動指數 22 Apr 2026

卡塔尼亞沃爾夫數	///
10厘米太陽通量	116
AK Chambon La Forêt	011
AK Wingst	006
估計地磁Ap指數	004
估計國際太陽黑子數	077 - 基於29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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