查看星期四, 16 4月 2015歷史檔案

SIDC 太陽影響數據分析中心的每日公告

發布時間: 2015 Apr 16 1230 UTC

SIDC太陽影響數據分析中心的預報

太陽閃焰

Eruptive (C-class flares expected, probability >=50%)

地磁

Active conditions expected (A>=20 or K=4)

太陽質子

Quiet

	10公分通量	Ap
16 Apr 2015	158	020
17 Apr 2015	163	008
18 Apr 2015	167	006

公告

The strongest flare reported during last 24 hours was the C7.8 flare, peaking at 20:23 UT on April 15. The flare originated from, still the most complex region visible on the solar disc, NOAA AR 2321 (altogether Catania sunspot groups 29, 30 and 31). We expect C-class flares and possibly also an isolated M-class flare, in particular from NOAA ARs 2321, 2324, and 2325. No Earth directed CMEs were observed during last 24 hours. The Earth is inside the fast solar wind with the speed of about 620 km/s. The interplanetary magnetic field magnitude has decreased and its present value is about 7nT. During the last 24 hours the Bz component of the interplanetary magnetic field had a few longer intervals of negative value (mostly about - 6 nT, with minimum reported value of about -12nT) which induced minor storm geomagnetic conditions (local station at Dourbes and IZMIRAN reported K=5; NOAA reported Kp= 5). CME of April 12 might arrive at the Earth today. We expect active to possibly minor storm geomagnetic conditions in the coming hours.

今日估計的國際太陽黑子數（ISN）：083，基於17個觀測站。

太陽活動指數 15 Apr 2015

卡塔尼亞沃爾夫數	125
10厘米太陽通量	155
AK Chambon La Forêt	038
AK Wingst	033
估計地磁Ap指數	030
估計國際太陽黑子數	073 - 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

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