Viewing archive of Friday, 17 September 2010
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 2010 Sep 17 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 260 Issued at 0245Z on 17 Sep 2010 This report is compiled from data received at SWO on 16 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 2007 2007 2007 140
B. Proton Events
None
C. Geomagnetic Activity Summary
Quiet to unsettled.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 083 SSN 046 Afr/Ap 005/006 X-ray Background B1.9 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.4e+05 GT 10 MeV 1.4e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.40e+06 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 1 0 1 1 2 3 3 2 Planetary 1 0 1 0 1 3 3 2
F. Comments
None
All times in UTC
Latest news
Wednesday, 5 March 2025
Coronal hole faces Earth
Sunday, 23 February 2025
X2.0 solar flare from sunspot region 4001
Friday, 7 February 2025
Coronal hole faces Earth, Minor G1 geomagnetic storm watch
Latest forum messages
Ask your obscure/"stupid" space weather questions. 315Coronal Hole 22 33Incoming & Unnumbered Active Regions 1627AR 4021 6Coronal hole 23 2
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!
Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/11 | M1.1 |
| Last geomagnetic storm | 2025/03/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 112.5 -42.1 |
| Last 30 days | 140.4 -7 |