Viewing archive of Monday, 20 May 2002
Geophysical report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Solar and Geophysical Activity Summary 2002 May 20 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 140 Issued at 0245Z on 20 May 2002 This report is compiled from data received at SWO on 19 MayA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0007 0007 0008 100
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field ranged from
quiet to minor storm conditions. Minor storming subsided after
19/0900 UTC to quiet to unsettled conditions. This activity
correlates well with the full halo CME observed on 16 May.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 171 SSN 155 Afr/Ap 018/018 X-ray Background B7.6 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.1e+06 GT 10 MeV 1.0e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.20e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 4 4 5 2 2 1 1 2 Planetary 3 4 5 2 3 3 2 2
F. Comments
None
All times in UTC
Latest news
Friday, 28 March 2025
X1.1 solar flare
Monday, 24 March 2025
Coronal hole faces Earth
Saturday, 22 March 2025
Strong G3 geomagnetic storm watch for 23 March
Latest forum messages
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Latest alerts
00:09 UTC - Solar flare
Moderate M1.03 flare
Sunday, 30 March 2025
23:51 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.03)
23:39 UTC - Solar flare
Moderate M1.52 flare
23:21 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.49)
23:09 UTC - Solar flare
Moderate M1.48 flare
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/03/30 | M1.4 |
| Last geomagnetic storm | 2025/03/27 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 127.5 -27.1 |
| Last 30 days | 127.5 -25.1 |