查看星期二, 20 8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 Aug 20 1232 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
20 Aug 2024	240	006
21 Aug 2024	235	007
22 Aug 2024	235	008

太陽活動區和耀斑

Solar flaring activity was moderate over the past 24 hours. The largest flare was a M3.7-flare, with peak time 21:52 UTC on August 19 2024, from NOAA AR 3796 (beta-gamma). There are currently 11 numbered active regions on the visible disk. NOAA AR 3784 is the most complex AR (beta-gamma-delta). The solar flaring activity is expected to be at moderate levels for the next 24 hours with C-class flares expected and M-class flares probable and a chance of X-class flares.

日冕物質拋射

No new Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images.

日冕洞

A small negative polarity mid-latitude coronal hole started to cross the central meridian in the northern hemisphere. A high-speed stream from this coronal hole may enhance the solar wind environment near Earth on August 23.

太陽風

The solar wind at the Earth remained slow over the last 24 hours. The solar wind speed decreased from around 400 km/s to around 350 km/s and the interplanetary magnetic field was stable around 7nT. The Bz reached a minimum value of -6nT. Slow solar wind conditions are expected in the next 24h.

地磁

Geomagnetic conditions were globally and locally quiet to unsettled (Kp 3+ and K Bel 3). Quiet conditions are expected in the next 24 hours.

質子通量水平

The greater than 10 MeV proton flux remained below the 10 pfu threshold 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 electron flux remained below the 1000 pfu alert threshold, and is expected to remain below the threshold during the next 24 hours. The 24h electron fluence was at normal levels and is expected to remain so.

今日估計的國際太陽黑子數（ISN）：221，基於22個觀測站。

太陽活動指數 19 Aug 2024

卡塔尼亞沃爾夫數	204
10厘米太陽通量	239
AK Chambon La Forêt	024
AK Wingst	010
估計地磁Ap指數	010
估計國際太陽黑子數	232 - 基於21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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