查看星期五, 19 7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 Jul 19 1316 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

Minor storm expected (A>=30 or K=5)

太陽質子

Quiet

	10公分通量	Ap
19 Jul 2013	113	023
20 Jul 2013	115	030
21 Jul 2013	116	015

公告

Solar activity is still low with only two C-class flares reported during last 24 hours. Both of them were C2.3 flares originating from the NOAA AR 1800 situated at the moment close to the east solar limb. NOAA AR 1793 still has beta-gamma configuration of the photospheric magnetic field, and therefore, also the potential to produce C-class and possibly M-class flares. The prominence eruption on the east solar limb at about 17:59 UT on July 18 was associated with the CME first seen in the SOHO/LASCO C2 field of view at 18:24 UT. The CME had angular width of 130 degrees and projected speed of about 550 km/s, as reported by the CACTUS software. The CME might be Earth directed, however this cannot be confirmed, due to the data gap in STEREO observations. The Earth is inside the fast speed stream due to the low-latitude coronal hole in the northern hemisphere. At the moment the solar wind speed is 600 km/s and the interplanetary magnetic field (IMF) is rather stable with the magnitude of about 5 nT. The arrival of the coronal hole high speed stream resulted in active geomagnetic conditions (K = 4 reported by Dourbes, K = 5 reported by IZMIRAN and NOAA reported Kp=4) on July 18 and early on July 19. We expect minor storm conditions.

今日估計的國際太陽黑子數（ISN）：056，基於13個觀測站。

太陽活動指數 18 Jul 2013

卡塔尼亞沃爾夫數	///
10厘米太陽通量	115
AK Chambon La Forêt	028
AK Wingst	020
估計地磁Ap指數	018
估計國際太陽黑子數	071 - 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

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