A G2 (Moderate) geomagnetic storm watch has been issued for 03-04 Apr, 2026, due to combined influence from on-going CH HSS and a CME that left the Sun on 02 Apr. Stay tuned to our website for updates.
最新太阳活动及近期空间天气预报
作者: Uliana Soloveva
今天,2026年4月3日,地球继续感受到过去几天太阳事件的影响。美国国家海洋和大气管理局(NOAA)空间天气预测中心(SWPC)正密切关注局势,事态发展充满动态,可能带来中等强度的地磁扰动。
A CME as part of a filament eruption occurred on 1 Apr. Initial analyses suggests an arrival just ahead and mostly north of Earth’s orbit. However, some outlier model runs hint at some glancing influences 4 Apr. SWPC continues to evaluate & any Watch decisions will be made later.
影响未来几天空间天气的最新事件之一发生在4月1日,与太阳上的丝状喷发(filament eruption)有关,随后引发了日冕物质抛射(CME)。4月2日UTC时间15:16,NOAA报告称:等离子体云的主体将从地球轨道北侧掠过,但部分模型显示最早可能在4月4日产生擦边影响。分析仍在进行中,关于预警的最终决定将在稍后做出。
3.5 M-Flare from the Sun, active region 4406 has become a player along AR4405, both are in the Earth-strike zone. A halo CME is already inbound from yesterday amidst an ongoing coronal hole high-speed-stream impact at G2- levels. We have 4 astronauts in space!!!
在活动区4406的M3,5耀斑,与活动区4405一起成为重要因素,两者都位于地球迎面相撞区。
与此同时,来自日冕洞的高速流(CH HSS)影响正在增强。就在同一天UTC时间15:19,SWPC指出,此类高速流仍在持续,并可能在4月2日期间引起G1级(弱风暴)。到UTC时间19:21,预报得到证实:在地冕洞的作用下,地磁活动达到了G2级——中等水平。这意味着地球磁层已经经历了明显的扰动。
UTC时间19:49,官方发布了正式预警:针对4月3日至4日发布了G2级地磁暴预警。原因是持续的高速流与4月1日的那次CME共同产生的影响。
到4月2日晚,情况增添了新的细节。空间天气专家斯特凡·伯恩斯(Stefan Burns)报告称,4406活跃区发生了一次M3.5级耀斑。该区域与相邻的4405区域一起成为了值得关注的对象——两者目前都处于所谓的“打击区”,即它们对地球的影响达到最大。与此同时,前一天的CME流影响正与当前日冕洞引起的G2级影响相叠加。
目前,在4月3日凌晨,地磁活动水平依然较高,G2级预警持续生效。在这种情况下,高纬度地区可能会出现极光,无线电通信和导航可能出现短期干扰,电力系统也可能出现微弱波动。第25个太阳周期继续表现活跃,从耀斑到抛射的每一个新事件都有助于完善预报。
SWPC强调:情况可能会发生变化。在专家完成建模的同时,地球正拭目以待地冕洞高速流与逼近的CME结合后的发展。关注这些动态是值得的——空间天气从不让人感到乏味。
阅读更多关于此主题的文章:
G2 Watch for 31 Mar UTC-day still stands. We evaluated the 29 Mar (EDT) CME and feel fairly certain most ejecta will pass behind Earth's orbit; although we do anticipate enough flanking effects to warrant the G2 Watch, with a chance for G3. Stay aware at spaceweather.gov
REPOST: An X1.4 flare was produced by Region 4405, peaking at 0319 UTC on 30 March and resulted in an R3 (Strong) Radio Blackout. An associated coronal mass ejection is seen in coronagraph imagery and analysis is currently ongoing. Visit spaceweather.gov to stay informed.
G3 (Strong) geomagnetic storming was observed during the 0900-1200 UTC synoptic period on 22 Mar as what is likely high speed stream onset began. Additional periods of G1-G2 storming are expected, along with possibly even another isolated period of G3 levels, in the coming hours.
