The Chip Witch Blog

20.06.2025 at 05:24:33 UTC

Type	Jun 20	Jun 21	Jun 22
Active	25%	25%	15%
Minor	35%	5%	1%
Moderate	15%	1%	1%
Strong	5%	1%	1%
Kp Index Prediction
00-03UT	2.33	2.67	1.67
03-06UT	4.33	2.00	1.33
06-09UT	5.00	2.33	1.33
09-12UT	4.33	2.33	1.33
12-15UT	3.33	2.33	1.67
15-18UT	3.33	2.33	1.33
18-21UT	2.33	2.33	1.67
21-00UT	3.67	2.67	1.33
Solar Activity
Solar activity reached high levels when Region 4114 (N21W41, Ekc/beta-gamma) produced the strongest event of the period, an X1.9 flare at 19/2350 UTC. The region remained the most complex on the disk despite being in a decay phase. The other numbered spotted regions on the visible disk were either mostly stable or in gradual decay. No Earth-directed CMEs were observed in available coronagraph imagery.
Solar Wind
Solar wind parameters continued to reflect a positive polarity CH HSS regime. Total field (Bt) remained around 6-9 nT with the north-south (Bz) component oscillating between +/-7 nT. Solar wind speeds varied between ~450-600 km/s. Phi angle was predominantly in the positive (away from the Sun) orientation.
Energetic Particle
Due to continued influence from the coronal hole (CH) high speed stream (HSS), the greater than 2 MeV electron flux peaked just below warning threshold.