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SIDC 太陽影響數據分析中心的每日公告

發布時間: 2025 Aug 02 1236 UTC

SIDC太陽影響數據分析中心的預報

太陽閃焰

M-class flares expected (probability >=50%)

地磁

Quiet (A<20 and K<4)

太陽質子

Quiet

	10公分通量	Ap
02 Aug 2025	146	009
03 Aug 2025	148	010
04 Aug 2025	150	013

太陽活動區和耀斑

Solar flaring activity was at low levels with low C-class flaring over the past 24 hours. A total of 10 numbered sunspot groups were identified on the visible solar disk, all of them being magnetically simple, classified as magnetic type beta or alpha. The most notable activity was a C3.7 flare with peak time 11:09 UTC on Aug 02, produced by SIDC Sunspot Group 570 (NOAA Active Region 4153) from near the west limb. This region, classified as magnetic type beta, has produced most of the low flaring activity over the past 24 hours together with SIDC Sunspot Group 585 (NOAA Active Region 4167). The latter region has exhibited further flux emergence and growth becoming the largest and most complex region on the visible disc, currently classified as magnetic type beta-gamma. The solar flaring activity is expected to be at low to moderate levels over the next 24 hours with background C-class flaring and increasing chances for M-class flaring mostly related to regions SIDC Sunspot Group 570 and SIDC Sunspot Group 585.

日冕物質拋射

No other Earth-directed coronal mass ejection (CMEs) have been detected in the available coronagraph imagery over the past 24 hours.

太陽風

Over the past hours the solar wind parameters as measured by ACE continued to be slightly elevated under a mild influence of a high- speed stream from a negative polarity coronal hole. The total interplanetary magnetic field (B) reached a maximum of 8 nT with a minimum north-south component, Bz, of -7 nT. The solar wind speed varied between 422 km/s and 593 km/s. The B field phi angle remained predominantly in the negative sector (directed towards the Sun). The solar wind conditions are expected to register slow transition towards nominal slow solar wind conditions over the next 24 hours. Mostly nominal solar wind conditions are expected on Aug 03. Some enhancements are possible on Aug 04 with an anticipated new mild high speed stream arrival.

地磁

The geomagnetic conditions over the past 24 hours were quiet to unsettled. Quiet to unsettled geomagnetic conditions are expected for the next days with chances for isolated active periods on Aug 04.

質子通量水平

Over the past 24 hours the greater than 10 MeV GOES proton flux has been at nominal levels and is expected to remain so over the next days.

地球靜止軌道上的電子通量

The greater than 2 MeV GOES electron flux has exceeded the 1000 pfu threshold over the past 24 hours and is expected to exceed the threshold again in the next 24 hours. The 24-hour electron fluence was at nominal levels and is expected to remain so in the next 24 hours.

今日估計的國際太陽黑子數（ISN）：135，基於08個觀測站。

太陽活動指數 01 Aug 2025

卡塔尼亞沃爾夫數	///
10厘米太陽通量	146
AK Chambon La Forêt	025
AK Wingst	014
估計地磁Ap指數	016
估計國際太陽黑子數	139 - 基於24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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