Viewing archive of Sunday, 18 May 2025
Geophysical report
Solar and Geophysical Activity Summary 2025 May 18 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 138 Issued at 0245Z on 18 May 2025 This report is compiled from data received at SWO on 17 MayA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0956 1009 1019 4089 B8.5 170
B. Proton Events
None.
C. Geomagnetic Activity Summary
The geomagnetic field reached
major storm levels during the onset of a postive polarity coronal
hole with possible embedded transient.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 117 SSN 058 Afr/Ap 025/??? X-ray Background B4.0 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.2e+06 GT 10 MeV 1.5e+04 p/(cm2-ster-day) (GOES-18 satellite synchronous orbit W137 degrees) Daily Electron Fluence GT 2 MeV 1.10e+07 e/(cm2-ster-day) (GOES-19 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 5 5 4 5 5 5 3 2 Planetary 6 5 3 5 4 4 4 3
F. Comments
None.
All times in UTC
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| Last X-flare | 2025/05/14 | X2.7 |
| Last M-flare | 2025/05/15 | M2.1 |
| Last geomagnetic storm | 2025/05/17 | Kp6+ (G2) |
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