查看星期四, 18 4月 2013歷史檔案

SIDC 太陽影響數據分析中心的每日公告

發布時間: 2013 Apr 18 1152 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

Quiet (A<20 and K<4)

太陽質子

Quiet

	10公分通量	Ap
18 Apr 2013	105	003
19 Apr 2013	103	009
20 Apr 2013	100	011

公告

Majority of the flaring activity during past 24 hours was of the low C-class level and originated from the Catania sunspot group 43 (NOAA AR 1719) which just turned behind the west solar limb. The strongest flare reported was C1.6 flare peaking at 08:19 UT today. The long duration C3.5 flare peaking at 21:32 UT on April 16 was associated with narrow CME which will not arrive at the Earth. The solar wind speed decreased to rather low value of about 280 km/s. The interplanetary magnetic field magnitude is stable and amounts about 3 nT . The fast flow from the small low-latitude coronal hole in the northern hemisphere which passed the central meridian on April 16 might arrive at the Earth late on April 19 or early on April 20. Although the arrival of the fast stream is possible it is not very probable, and we do not expect disturbed geomagnetic conditions due to its arrival. We expect quiet geomagnetic conditions in the next 48 hours.

今日估計的國際太陽黑子數（ISN）：060，基於14個觀測站。

太陽活動指數 17 Apr 2013

卡塔尼亞沃爾夫數	112
10厘米太陽通量	108
AK Chambon La Forêt	005
AK Wingst	003
估計地磁Ap指數	002
估計國際太陽黑子數	067 - 基於22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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