The Chip Witch Blog

23.05.2025 at 10:37:36 UTC

Type	May 23	May 24	May 25
Active	35%	35%	35%
Minor	15%	15%	15%
Moderate	5%	5%	5%
Strong	1%	1%	1%
Kp Index Prediction
00-03UT	2.00	2.33	2.00
03-06UT	2.00	2.67	2.33
06-09UT	1.67	3.00	3.00
09-12UT	2.67	3.67	3.67
12-15UT	2.67	3.00	3.00
15-18UT	4.00	2.33	2.33
18-21UT	2.67	1.67	2.33
21-00UT	2.67	1.67	1.67
Solar Activity
Solar activity was at low levels. Region 4095 (S06W71, Dai/beta-gamma) produced the largest flare of the period, a C2.4 at 22/2241 UTC. The region has the most complex magnetic classification of the front-sided groups as a beta-gamma group. Region 4087 (N15W57, Hsx/alpha) underwent decay and lost its trailer spots. New Regions 4096 (N06E57, Hsx/alpha) and 4097 (S13E63, Cro/beta) were numbered this period. All other regions were either stable or in decay.
Solar Wind
Solar wind parameters reflected persistent CH HSS influence. Total field has been between 4-9 nT for most of the period while the Bz component oscillated between +7/-5 nT. Solar wind speeds gradually decreased from ~575 to ~475-500 km/s. Phi was mostly positive.
Energetic Particle
Ongoing influence from the positive polarity CH HSS produced high flux levels with a peak of 1,643 pfu recorded at 22/1635 UTC. GOES-19 and GOES-18 have seen fluxes oscillating around the 1000 pfu during their respective diurnal maximas.