查看星期三, 7 5月 2025歷史檔案

SIDC 太陽影響數據分析中心的每日公告

發布時間: 2025 May 07 1231 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
07 May 2025	155	010
08 May 2025	158	019
09 May 2025	160	022

太陽活動區和耀斑

Solar flaring activity was low but very frequent over the past 24 hours, with approximately 20 C-class flares identified. SIDC Sunspot Group 469 (NOAA Active Region 4079, Beta-Gamma magnetic configuration) produced all of the activity with the brightest flare being a C4 on 6 May at 17:07 UTC. For the next 24 hours M-class activity originating from SIDC Sunspot Group 469 is likely and there is a small chance for an X-class flare.

日冕物質拋射

A Coronal Mass Ejection (CME) can be seen in LASCO-C2/SOHO images and was detected by CACTus as launched on 6 May 18:00 UTC. It is associated with SIDC Sunspot Group 469 (NOAA active region 4079). Although it is a relatively narrow CME, there is a chance to produce a glancing blow to the Earth's environment at the first half of 9 May.

太陽風

During the last 24 hours the High Speed Stream (HSS) that arrived on 4 May subsided significantly. The Solar Wind (SW) speed dropped from 850 km/s to 500 km/s, the interplanetary magnetic field (B) varied between 1 and 7 nT, and its North-South component (Bz) fluctuated between -6 and 5 nT during the same period. Another HSS, associated with the SIDC coronal hole 111 is expected to arrive in the next 24 hours.

地磁

The geomagnetic conditions registered globally active levels for a short period of time (NOAA Kp 4- on 6 May at 21:00 to 24:00 UTC), while of the rest of the last 24 hours they fluctuated between quiet and unsettled levels (NOAA Kp 2+ to 3+). Locally the geomagnetic conditions registered unsettled to quiet levels (K BEL 3 to 2) during the same period. In the next 24 hours they are expected to continue at active to unsettled levels both globally and locally.

質子通量水平

The greater than 10 MeV proton flux, as measured by the GOES-19 satellite, was at nominal levels over the past 24 hours and is likely to remain so in the next 24 hours. Nevertheless, there is a small chance that a proton event might occur during 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 GOES 19 was above the 1000 pfu threshold during the past 24 hours, with a peak value at 10000 pfu. It is expected to remain above the alert level during the next 24 hours as another high speed stream is very likely to arrive. The 24-hour electron fluence continued to be at high levels during the past 24 hours. It is expected to gradually drop to moderate levels some time in the next 24 hours.

今日估計的國際太陽黑子數（ISN）：082，基於11個觀測站。

太陽活動指數 06 May 2025

卡塔尼亞沃爾夫數	///
10厘米太陽通量	156
AK Chambon La Forêt	021
AK Wingst	018
估計地磁Ap指數	017
估計國際太陽黑子數	094 - 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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