Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0013 0014 0014 850 0040 0040 0040 1100 0056 0107 0118 3240 S15E69 M1.0 Sf 0143 0147 0152 3240 S15E69 C9.3 1f 2600 0235 0236 0236 740 0252 0320 0336 3234 S15E69 C5.1 Sf 1800 0344 0344 0344 1400 0445 0445 0445 580 0735 0736 0737 3234 N24W33 Sf 990 1019 1020 1020 220 1152 1152 1152 150 1315 1315 1316 210 2318 2322 2328 C2.7 180
10 cm 162 SSN 105 Afr/Ap 006/005 X-ray Background C1.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.1e+06 GT 10 MeV 2.3e+04 p/(cm2-ster-day) (GOES-16 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.80e+08 e/(cm2-ster-day) (GOES-16 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder ? ? ? ? ? ? ? ? Planetary 2 1 0 2 1 1 1 2
The BOU magnetometer has been offline since 13 Feb 2023.
All times in UTC
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| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/08 | M1.8 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 162.7 +70.9 |
| Last 30 days | 108 +13.3 |