查看星期五, 17 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 17 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
17 Apr 2026	110	007
18 Apr 2026	110	007
19 Apr 2026	110	007

太陽活動區和耀斑

A total of 3 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. These flares originated at SIDC Sunspot Group 825 (NOAA Active Regions 4397, 4419), currently located at N15E38, with a Beta-Gamma magnetic configuration. The largest flare was a C4.1 flare (SIDC Flare 7416) peaking on April 17 at 04:42 UTC, which was produced by SIDC Sunspot Group 825. More c-class flares can be expected in the next 24 hours, and there are low chances of observing an M-class flare.

日冕物質拋射

No Earth directed CMEs were observed in the past 24 hours.

日冕洞

There is a large equatorial coronal hole with negative polarity in the western hemisphere (SIDC Coronal Hole 147).

太陽風

The solar wind speed is low, around 310 km/s with interplanetary magnetic field magnitude of 5 nT, with positive polarity (away from the Sun). The high speed solar wind stream from a large coronal hole located in the northern hemisphere (SIDC Coronal Hole 147) will reach the Earth in about 24 hours.

地磁

Geomagnetic conditions have been quiet (Kp and K_BEL up to 2). Similar conditions can be expected for the next 24 hours, after that the high speed stream from SIDC Coronal Hole 147 will reach the Earth and create disturbed conditions.

質子通量水平

The greater than 10 MeV proton flux, as measured by GOES-18, was below the 10 pfu threshold level over the past 24 hours and is expected to remain so for 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 briefly 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 normal to 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）：051，基於20個觀測站。

太陽活動指數 16 Apr 2026

卡塔尼亞沃爾夫數	///
10厘米太陽通量	108
AK Chambon La Forêt	006
AK Wingst	003
估計地磁Ap指數	002
估計國際太陽黑子數	054 - 基於25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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