空间天气实况贴

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Beautiful Eruption
June 3, 2024 @ 14:50 UTC
A beautiful eruption of plasma registering as an M4.8 solar flare was just observed and involved both AR 3691 and 3695 in the northwest quadrant. Somewhat of a coronal mass ejection (CME) will be likely, however judging by the way the eruption unfolded, the trajectory should be mostly north of the Sun-Earth line. This event is in addition to two other M-Flares today so far, an M3.2 and M2.8 were observed around AR 3697 in the southern hemisphere.
More details to follow regarding the possible CME whenever additional imagery is available.

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CME Impact / Minor (G1) Storm
June 4, 2024 @ 00:20 UTC
It appears that a CME passed Earth around 23:00 UTC (Jun 3). A geomagnetic sudden impulse measuring 61 nT was recorded by the Boulder magnetometer. The minor (G1) geomagnetic storm threshold was reached at 23:59 UTC. Although the solar wind speed is not terribly high, the Bz component of the interplanetary magnetic field (IMF) has been shifting wildly from from a north to south pointing orientation. Enhanced activity including minor storming could persist over the next several hours.

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Jun 03 2359 UTC
Synoptic Period: 2100-0000 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor

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AR 3697(3664)  M2.4

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AR 3679和AR 3683组成的巨型活动区即将进入太阳正面
在太阳背面的图像里已经到最右边了

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AR 3697(3664)  M9.75  长周期  Full Halo CME  质子S3事件

耀斑喷发巅峰时刻画面

日冕物质抛射画面

LASCO C2画面动图

日冕物质抛射动图

日冕物质抛射画面

X射线通量变化曲线

高能质子通量变化曲线

Large Eruption Observed / Radiation Storm
June 8, 2024 @ 03:30 UTC
    AR 3697, more affectionately known as AR 3664, just produced a near X-Flare (M9.7) peaking at 01:49 UTC (Jun 8th). This resulted in a large eruption of plasma as seen here in the latest image courtesy of GOES-16 SUVI. Because the event took place towards the southwest limb, it should be mostly directed towards the west and away from Earth. Even with that in mind, the eruptive nature appears widespread, so an Earth directed component may be possible. More details to follow.
Click HERE for video of the event.

CME Update: An energetic coronal mass ejection (CME) was produced by the M9.7 eruption around AR 3697 (3664) this evening. A moderate (S2) radiation storm is currently in progress. Imagery suggests that a glancing blow may be possible within 48-72 hours. Stay tuned for further updates.


"Snowstorm" + Geomagnetic Storm Watch Issued
June 8, 2024 @ 09:10 UTC
    A "snowstorm" is underway as energetic particles bombard the LASCO detectors onboard the SOHO spacecraft. It should be noted that the strong (S3) radiation storm threshold was touched at 08:00 UTC (Jun 8th). While we await a CME tracking model, it does appear that the edge of the plasma cloud is heading in our direction. This means that a geomagnetic storm will be possible by perhaps Monday. Stay tuned for further updates.

Geomagnetic Storm Watch: The large scale CME observed leaving the Sun early this morning has been modeled by NOAA/SWPC. The are calling for the edge of the plasma cloud to pass Earth sometime early on June 10th. A moderate (G2) geomagnetic storm watch will be in effect beginning Monday.

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So Long For Now (Again)
June 9, 2024 @ 16:55 UTC
  As we prepare to say goodbye to AR 3664 (3697) for the second time, below is a look back at the formerly massive sunspot region over the past nearly six weeks. After first turning into view on May 1st, it would continue to grow and go on to produce twelve X-Flares during the first transit. After rotating onto the farside of the Sun on May 14th, it would reappear again on May 28th. Another five X-Flares were detected during the second transit, bringing the total to 17. A pretty impressive run! Of course there was also the energetic M9.7 flare early Saturday morning which produced a bright CME that is expected to deliver a glancing blow to our geomagnetic field within the next 24 hours. The chances of surviving the trek around the farside yet again is likely much smaller, but we will see later this month. So long for now!

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CME前锋抵达STEREO A

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AR 3697(3664)  X1.55  Type II Halo CME






X1.5 Solar Flare
June 10, 2024 @ 12:30 UTC
  An X1.5 solar flare was produced by departing AR 3697 (3664) at 11:08 UTC (Jun 10). Despite shrinking in size, the region still remains potent as it turns behind the west limb. A coronal mass ejection (CME) is associated with the event and is heading to the west and away from Earth. Other than the radio blackout, no major impacts are expected. Perhaps in two weeks we will see whatever remains of the flare producing machine turn back into view once again. Bye for now!

闽海星尘

AR 3697(3664)  M9.56+  Type III Halo CME