查看星期二, 18 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 18 1241 UTC

SIDC太陽影響數據分析中心的預報

太陽閃焰

Quiet conditions (<50% probability of C-class flares)

地磁

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

太陽質子

Quiet

	10公分通量	Ap
18 Aug 2015	085	021
19 Aug 2015	086	021
20 Aug 2015	086	017

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. However, a large Active Region (AR) has just rotated into view on the east limb and produced several B-class flares, this region may lead to increased activity. A second region on the south-east limb showed evidence of a failed eruption at 00:30 UT this morning. AR 2401 (Macintosh:Cro/Type:Beta) has remained stable. No evident Earth directed Coronal Mass Ejections (CMEs) were produced in the past 24 hours. The solar wind speed has been slowly decreasing over the past 24 hours, from 600 to 500 km/s. The total magnetic field has been stable around 5 nT, and the Bz component has fluctuated between +5 nT and -5nT over the past 24 hours. Geomagnetic conditions were quiet to active over the past 24 hours, with the Local K index (Dourbes) reaching 4 and the Kp index (NOAA) reaching 5 around 15:00 UT on 2015-Aug-17, these conditions are probably caused by a high speed stream created by a geoeffective coronal hole. The continued presence of the coronal hole is likely to cause continued unsettled conditions.

今日估計的國際太陽黑子數（ISN）：042，基於12個觀測站。

太陽活動指數 17 Aug 2015

卡塔尼亞沃爾夫數	///
10厘米太陽通量	087
AK Chambon La Forêt	031
AK Wingst	024
估計地磁Ap指數	027
估計國際太陽黑子數	028 - 基於18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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