Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1406 1425 1443 3723 S20W73 M1.0 Sf II 1954 2005 2013 3730 M1.4 II
10 cm 173 SSN 113 Afr/Ap 010/011 X-ray Background C1.4 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.9e+05 GT 10 MeV 1.9e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 9.60e+06 e/(cm2-ster-day) (GOES-16 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder ? ? ? ? ? ? ? ? Planetary 2 3 1 1 3 3 3 3
Boulder K values are being withheld due to a recent maintenance issue
All times in UTC
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/21 | M1.3 |
| Last geomagnetic storm | 2025/12/22 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 114.8 +23 |
| Last 30 days | 109.3 +22.9 |