Viewing archive of Wednesday, 28 May 2025
Geophysical report
Solar and Geophysical Activity Summary 2025 May 28 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 148 Issued at 0245Z on 28 May 2025 This report is compiled from data received at SWO on 27 MayA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0519 0519 0520 180 0743 1011 1159 4100 N18E62 C5.0 Sf 120 1014 1014 1014 210 1111 1111 1111 100 1303 1303 1304 100 1308 1308 1308 110 1322 1322 1322 140 1332 1332 1332 150 1505 1505 1505 120
B. Proton Events
None
C. Geomagnetic Activity Summary
Field conditions were at quiet to
active levels.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 137 SSN 116 Afr/Ap 012/??? X-ray Background B8.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.5e+05 GT 10 MeV 1.5e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 1.50e+07 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W0 degrees) 3 Hour K-indices Boulder 2 2 1 3 3 3 3 4 Planetary ? ? ? ? ? ? ? ?
F. Comments
None
All times in UTC
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| Last M-flare | 2026/06/21 | M6.9 |
| Last geomagnetic storm | 2026/06/11 | Kp5 (G1) |
| Spotless days | |
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| Last 365 days | 3 days |
| 2026 | 3 days (2%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
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| May 2026 | 101.4 +22.1 |
| June 2026 | 98.3 -3.1 |
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