查看星期二, 30 4月 2024歷史檔案

SIDC 太陽影響數據分析中心的每日公告

發布時間: 2024 Apr 30 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
30 Apr 2024	132	007
01 May 2024	128	014
02 May 2024	124	016

太陽活動區和耀斑

Solar flaring activity over the past 24 hours was at moderate levels. The largest flare was a M1.6-flare, with peak time 01:14 UTC on April 30 associated with NOAA AR 3654 (beta-gamma- delta). There are currently 6 numbered active regions on the visible disk. NOAA AR 3654 (beta-gamma-delta) is the largest, most magnetically complex region and has produced most of the flaring activity in the last 24 hours. NOAA AR 3652 (alfa) has started to rotate over the west limb. All other regions were inactive and stable. The solar flaring activity is likely to be at moderate levels over the coming days with C-class flares expected, M-class flares possible and a chance for an X-class flare.

日冕物質拋射

A Coronal Mass Ejection (CME), was detected at 12:36 UTC on April 29, in LASCO C2 data. The CME is associated with an eruption seen in SDO/AIA 171 and 193 at 07:53 UTC on April 29 associated with NOAA AR 3654. Further analysis is ongoing.

日冕洞

A long negative polarity coronal hole stretching from high northern latitudes down to the equator continues to pass the central meridian. The high-speed stream emanating from it might arrive to Earth late on May 1st.

太陽風

Over the past 24 hours the solar wind conditions were enhanced until around 17:45 UTC on April 29 when they started to decline to slow solar wind conditions. The solar wind velocity varied in the range of 374 to 505 km/s. The interplanetary magnetic field varied between 1 nT and 5 nT, with the Bz reaching a minimum value of -3 nT. The phi-angle was mainly in the positive sector (directed away from the Sun) with periods in the negative sector. The solar wind conditions are expected become elevated with a possible mild high-speed stream arrival on and May 1st.

地磁

Geomagnetic conditions were globally quiet (K 1-2) and locally reached unsettled conditions (K Bel 3). Quiet to unsettled conditions are expected in the next 24 hours.

質子通量水平

Over the past 24 hours the greater than 10 MeV GOES proton flux was at background 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 2 MeV GOES 16 electron flux was below the 1000 pfu threshold and is expected to remain so in the upcoming days. The 24h electron fluence was at nominal level and is expected to remain so in the next days.

今日估計的國際太陽黑子數（ISN）：088，基於16個觀測站。

太陽活動指數 29 Apr 2024

卡塔尼亞沃爾夫數	138
10厘米太陽通量	138
AK Chambon La Forêt	013
AK Wingst	009
估計地磁Ap指數	008
估計國際太陽黑子數	104 - 基於31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

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