查看星期三, 22 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 22 1231 UTC

SIDC太陽影響數據分析中心的預報

太陽閃焰

C-class flares expected, (probability >=50%)

地磁

Quiet (A<20 and K<4)

太陽質子

Quiet

	10公分通量	Ap
22 Apr 2026	118	008
23 Apr 2026	122	008
24 Apr 2026	126	007

太陽活動區和耀斑

Solar flaring activity was low over the past 24 hours, with only C-class flares identified. A total of 4 numbered sunspot groups were identified on the disk over the past 24 hours. SIDC Sunspot Group 825 (NOAA Active Region 4419) and SIDC Sunspot Group 847 (NOAA Active Region 4420) are the largest and most magnetically complex (Beta-Gamma) regions on disk. The largest flare was a C1.9 flare (SIDC Flare 7436) peaking on April 21 at 14:24 UTC, which was produced by SIDC Sunspot Group 847. Solar flaring activity is expected to be low over the next 24 hours, with C-class flares very likely and a chance for M-class flares.

日冕物質拋射

A Coronal Mass Ejection (CME) was observed LASCO-C2 data around 23:00 UTC on April 20. This CME is associated with a filament eruption centred around N21, E05, with a speed around 430 km/s. The bulk of the material is expected to travel North and most likely to miss the Earth a glancing blow arrival is possible on April 25 around 09:00 UTC.

日冕洞

SIDC Coronal Hole 157 (equatorial coronal hole extending to the polar south with a positive polarity) is continuing to cross the central meridian. SIDC Coronal Hole 156 (equatorial coronal hole with a positive polarity) started crossing the central meridian on April 22.

太陽風

Over the past 24 hours the solar wind parameters were under the waning influence of a high-speed stream associated with SIDC Coronal Hole 147. The solar wind speed ranged between 474 km/s to 577 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 reached active conditions globally (Kp 4) and minor storm conditions locally (K BEL 5) 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）：075，基於21個觀測站。

太陽活動指數 21 Apr 2026

卡塔尼亞沃爾夫數	079
10厘米太陽通量	112
AK Chambon La Forêt	020
AK Wingst	022
估計地磁Ap指數	021
估計國際太陽黑子數	056 - 基於32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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