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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 Jul 05 1231 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
05 Jul 2025	117	024
06 Jul 2025	113	013
07 Jul 2025	115	007

太陽活動區和耀斑

Solar flaring activity was very low over the past 24 hours. The X-ray flux remained below C-level. There are currently five numbered active regions on the visible solar disk, all of which have simple configurations of their photospheric magnetic fields (alpha and beta). SIDC Sunspot Group 533 (NOAA Active Region 4122; alpha) is approaching the west limb. Solar flaring activity is expected to be low over the next 24 hours, with C-class flares likely and a small chance for M-class flares.

日冕物質拋射

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

太陽風

Over the past 24 hours, solar wind parameters (ACE and DSCOVR) remained slightly disturbed under the ongoing influence of an interplanetary coronal mass ejection (ICME), possibly combined with a high- speed stream (HSS) from a negative polarity coronal hole (SIDC Coronal Hole 111). The interplanetary magnetic field reached values up to 12 nT, and the solar wind speed increased from 340 km/s to around 470 km/s. The southward component of the interplanetary magnetic field fluctuated between -10 nT and 9 nT. Solar wind conditions are expected to remain slightly elevated due to the waning ICME influence and negative polarity CH HSS influence.

地磁

Geomagnetic conditions over the past 24 hours reached active levels both globally and locally over Belgium (NOAA Kp = 4-; K-Bel = 4) between 21:00 and 00:00 UTC on July 04, and again between 09:00 and 12:00 UTC on July 05. Mostly quiet to unsettled geomagnetic conditions are expected over the next days, with a chance of isolated active periods due to ongoing ICME influence and the high-speed stream (HSS) from the negative polarity coronal hole (SIDC Coronal Hole 111).

質子通量水平

The greater than 10 MeV GOES proton flux was below the threshold level over the past 24 hours and is expected to remain so for the next 24 hours.

地球靜止軌道上的電子通量

The greater than 2 MeV electron flux, as measured by the GOES-19 satellite, remained below the 1000 pfu threshold over the past 24 hours. The greater than 2 MeV electron flux, as measured by the GOES-18 satellite, exceeded the 1000 pfu threshold between 18:00 UTC and 22:45 UTC on July 04. The electron flux is expected to remain below the threshold level over the next 24 hours. The 24-hour electron fluence was at normal levels and is expected to remain at normal levels over the next 24 hours.

今日估計的國際太陽黑子數（ISN）：077，基於16個觀測站。

太陽活動指數 04 Jul 2025

卡塔尼亞沃爾夫數	093
10厘米太陽通量	119
AK Chambon La Forêt	019
AK Wingst	012
估計地磁Ap指數	013
估計國際太陽黑子數	108 - 基於31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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