查看星期三, 29 9月 2021歷史檔案

SIDC 太陽影響數據分析中心的每日公告

發布時間: 2021 Sep 29 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
29 Sep 2021	089	007
30 Sep 2021	091	007
01 Oct 2021	093	014

公告

Four active regions (ARs) present on the visible solar disk. NOAA AR 2871 has decayed from beta-gamma magnetic field configuration, to alpha. Two new ARs: NOAA AR 2880 (beta) and 2881 (alpha). The former produced a C1.3 flare peaking at 02:18 UT. There’s also a new region rotating into view. Over the next 24 hours, more C-class flares can be expected.

No Earth directed CMEs have been observed in the last 24 hours.

The greater than 10 MeV proton flux was at background levels in the past 24 hours, and is expected to stay there in the next 24 hours. The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold, it may increase over the next 24 hours. The electron fluence was at normal levels over the past 24 hours, it may increase over the next 24 hours.

The Earth is still inside the high speed solar wind from the low latitudinal extension of the northern polar coronal hole (positive polarity). Solar wind speeds have reached 550 km/s with magnetic fields up to 6 nT (with Bz up to -3 nT). Over the next 24 hours we expect a return to slow solar wind.

Geomagnetic conditions were quiet to unsettled for Kp (NOAA Kp 1-3) and reached active periods locally at Dourbes (K Dourbes 2-4) over the past 24 hours, quiet to unsettled conditions can be expected for the next 24 hours. An ICME is expected to arrive after 24 hours and produce active to moderate storm levels.

今日估計的國際太陽黑子數（ISN）：074，基於12個觀測站。

太陽活動指數 28 Sep 2021

卡塔尼亞沃爾夫數	075
10厘米太陽通量	089
AK Chambon La Forêt	017
AK Wingst	013
估計地磁Ap指數	012
估計國際太陽黑子數	055 - 基於23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

<< 回到每日概觀