查看星期一, 17 8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 Aug 17 1240 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

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

太陽質子

Quiet

	10公分通量	Ap
17 Aug 2015	085	011
18 Aug 2015	084	021
19 Aug 2015	084	011

公告

Solar activity has been quiet over the past 24 hours. There have been a few low magnitude B-class flares and no C, or above, class flares. This low level of activity is expected to persist for the next day, with the possibility of C-class flares. However, a large Active Region (AR) is rotating into view on the east limb which may increase activity. AR 2400 (Macintosh:Axx/Type:alpha) and AR 2401 (Macintosh:Dai/Type:Beta) have both remained quite stable. A large coronal hole is currently located at high latitudes and may increase the solar wind speed. No evident Earth directed Coronal Mass Ejections (CMEs) were produced in the past 24 hours. The solar wind speed has remained roughly constant over the past 24 hours, around 550 km/s. The total magnetic field has been stable around 6 nT, and the Bz component has fluctuated, but has become more negative over the past 10 hours. The Bz has ranged between +10 and -6 nT over the past 24 hours. Geomagnetic conditions were quiet to moderate over the past 24 hours due to lasting effects from the CME first observed on 2015-Aug-12. Slightly enhanced solar wind conditions are expected to persist and will be possibly enhanced in 24-48 hours if the CME/shock front produced at 09:36 UT on 2015-Aug-14 interacts with the Earth. There is a large transient coronal hole currently located at high latitudes near the centre of the solar disk, as this rotates into the Western hemisphere the lower region may produce enhanced solar wind speeds.

今日估計的國際太陽黑子數（ISN）：027，基於11個觀測站。

太陽活動指數 16 Aug 2015

卡塔尼亞沃爾夫數	///
10厘米太陽通量	086
AK Chambon La Forêt	040
AK Wingst	025
估計地磁Ap指數	033
估計國際太陽黑子數	036 - 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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