SolarHam.com - Older News Archive (May 2019)

May 11, 2019 @ 01:10 UTC
Weak CME Passage (Updated)
A weak CME passage was detected this afternoon, a day earlier than predicted. The solar wind remains below 400 km/s and geomagnetic storming is not likely in the short term based on the current data. More updates will be provided whenever necessary.

UPDATE: Although the initial CME passage today was weak, the Bz component of the interplanetary magnetic field (IMF) has shifted into a mostly south pointing position, a condition that could help boost geomagnetic activity during the next several hours. A Kp of 4 will still be possible tonight with a lower chance for minor (G1) storm conditions.

May 8, 2019 @ 09:40 UTC
CME Directed Our Way?
A weak, slow moving coronal mass ejection (CME) observed on Tuesday is predicted to deliver a glancing blow to our geomagnetic field this weekend (May 11). If this does in fact take place, minor (G1) geomagnetic storming will be possible at higher latitudes. More to follow this weekend.

May 6, 2019 @ 09:20 UTC
2740 Update / C9.9 Flare
Region 2740 continues to move into a better Earth facing position and is currently crackling with C-Class solar flares. One of these flares nearly broke the M-Class threshold measuring C9.9 at 05:10 UTC. The flare itself was a very rapid and not likely the source of a noteworthy coronal mass ejection (CME). The sunspot region now has a delta magnetic configuration and should likely produce additional C-Flares and perhaps an isolated M-Flare during the next 24 hours. Image below courtesy of SDO/HMI.

It should also be noted that another sunspot is now turning into view off the east limb, but does not appear to be as active as 2740 at this time.

May 3, 2019 @ 20:05 UTC
Farsided Activity
Attached image below shows old region 2738, soon to be assigned new region 2740 turning into view off the east limb on Friday. Also included is a new plage that popped up in the northern hemisphere that likely belongs to the upcoming Solar Cycle 25. Imagery courtesy of SDO/HMI.

May 1, 2019 @ 20:00 UTC
Farsided Activity
Earth facing solar activity is very quiet, however the other side of the sun is very opposite. The past few days have seen quite a bit of activity surrounding old regions 2738 and 2738. A few solar flares observed by STEREO Ahead imagery also resulted in farsided coronal mass ejections. Another such eruption was observed on Wednesday at approx. 16:30 UTC. We will begin to see the source of these eruptions begin to turn back into view this weekend. Image below by STEREO Ahead.