The Chip Witch Blog

28.06.2025 at 14:30:06 UTC

Type	Jun 28	Jun 29	Jun 30
Active	35%	25%	10%
Minor	15%	5%	1%
Moderate	1%	1%	1%
Strong	1%	1%	1%
Kp Index Prediction
00-03UT	3.67	2.67	1.67
03-06UT	3.33	2.33	1.67
06-09UT	3.00	2.33	1.67
09-12UT	2.67	2.00	1.33
12-15UT	2.33	1.33	1.33
15-18UT	2.33	1.67	1.33
18-21UT	3.33	2.00	1.33
21-00UT	3.00	2.00	1.33
Solar Activity
Solar activity was at low levels with a few weak C-class flares observed. Regions 4117 (S14W69, Dso/beta), 4120 (N06W59, Dao/beta), and 4121 (S12W38, Bxo/beta) were either stable or in slight decay. Region 4122 (N13E24) is the largest, but appears to be ceasing growth. All other regions were generally quiet. At least two new regions will likely be numbered later today.
Solar Wind
Solar wind parameters reflected negative polarity CH HSS influence. Total field averaged 4-5 nT. The Bz component underwent several southward deflections reaching a maximum of -4 nT. Solar wind speeds averaged 700-725 km/s early, before decreasing to around 650 km/s during the second half of the period. The Phi angle was in a predominantly negative solar sector.
Energetic Particle
The greater than 2 MeV electron flux reached high levels at 27/1320 UTC when flux levels exceeded event threshold, and then fell slightly around 27/2200 UTC, before once again rising above threshold around 28/0500 UTC. The greater than 10 MeV proton flux was at background levels.