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.
最新太陽活動與近期太空天氣預報
作者: Uliana Soloveva
今天,2026 年 4 月 3 日,地球繼續感受到過去幾天太陽事件的影響。美國國家海洋暨大氣總署(NOAA)太空天氣預報中心(SWPC)的專家正密切關注局勢,該局勢正動態發展,並可能帶來中度的地磁擾動。
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.
影響未來幾天太空天氣的最新事件之一發生在 4 月 1 日,與太陽上的絲狀噴發(filament eruption)有關,隨後發生了日冕物質拋射(CME)。4 月 2 日 15:16 UTC,NOAA 報告:電漿雲的主體將從地球軌道北側掠過,然而,一些模型指出最早在 4 月 4 日可能產生擦邊影響。分析仍在進行中,關於警報的最終決定將在稍後做出。
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!!!
在活躍區 4406 的 M3,5 閃焰,與活躍區 4405 一起成為重要因素,兩者都位於地球迎面碰撞區。
與此同時,來自日冕洞的高速流(CH HSS)影響正在增強。當天 15:19 UTC,SWPC 就已指出,此類氣流持續存在,並可能在 4 月 2 日期間引發 G1 級(弱風暴)。到 19:21 UTC,預報得到證實:地磁活動達到 G2 級(中度水平),正是受到日冕洞的作用。這意味著地球磁層已經經歷了明顯的擾動。
19:49 UTC 發布了正式警報:針對 4 月 3 日至 4 日發布了 G2 級磁暴警報。原因是持續的高速流與 4 月 1 日發生的那個 CME 的共同影響。
到 4 月 2 日傍晚,情況增添了新的細節。太空天氣專家 Stefan Burns 報告了發生在 4406 活躍區的 M3.5 級閃焰。該區域與鄰近的 4405 區域一同成為值得關注的角色——兩者現在都處於所謂的「打擊區」(strike zone),在此區域對地球的影響最大。與此同時,(前一天的)CME 流影響正與當前日冕洞造成的 G2 影響相互疊加。
目前,在 4 月 3 日凌晨,地磁活動水平仍保持在高位,且 G2 警報持續生效。在這種情況下,高緯度地區可能會出現極光、無線電通訊和導航的短期干擾,以及電力系統的微弱波動。第 25 太陽週期繼續展現其活躍性,從閃焰到拋射的每一個新事件都有助於精確化預報。
SWPC 強調:情況可能會發生變化。當專家們完成建模時,地球正等待著 CH HSS 與即將到來的 CME 組合將如何發展。關注其發展是值得的——太空天氣從不讓人感到乏味。
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.
