查看星期一, 13 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 13 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
13 Apr 2026	099	007
14 Apr 2026	099	013
15 Apr 2026	097	007

太陽活動區和耀斑

A total of 4 numbered sunspot groups were identified on the disk over the past 24 hours, with simple alpha or beta magnetic field configuration. There was only one C-class flare in the last 24 hours. This was a C1.2 flare from SIDC Sunspot Group 842 (NOAA AR 4414), currently located at N15E12 with a Beta magnetic configuration. Solar flaring activity is expected to be low over the next 24 hours, with C-class flares likely.

日冕物質拋射

No Earth-directed CMEs were observed int he last 24 hours.

日冕洞

There are two mid-latitude positive polarity coronal holes (SIDC Coronal Holes 154 and 158) in the western hemisphere, and one (159) crossing the central meridian, also with positive polarity.

太陽風

The solar wind speed is low, around 420 km/s with interplanetary magnetic field magnitude of 6 nT, with positive polarity (away from the Sun). In the next 24 hours, there is a possible arrival of a mild fast solar wind stream from the small positive polarity coronal holes (SIDC Coronal Holes 154 and 158).

地磁

Geomagnetic conditions have been quiet to unsettled (Kp up to 2 and K_BEL up to 3). Similar conditions can be expected for the next 24 hours, with possible active to minor storm periods if the fast solar wind from SIDC Coronal Holes 154 and 158 arrives to the Earth.

質子通量水平

The greater than 10 MeV proton flux, as measured by GOES-18, was below the 10pfu 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-19, remained below the 1000 pfu alert threshold over the past 24 hours. The greater than 2 MeV electron flux, as measured by GOES-18, briefly exceeded the 1000 pfu alert threshold between 17:00 UTC and 23:00 UTC on April 12 and remained below the threshold for the rest of the period. The flux is expected to remain mostly below 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）：062，基於08個觀測站。

太陽活動指數 12 Apr 2026

卡塔尼亞沃爾夫數	///
10厘米太陽通量	099
AK Chambon La Forêt	012
AK Wingst	009
估計地磁Ap指數	009
估計國際太陽黑子數	043 - 基於20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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