Viewing archive of Sunday, 2 September 2001
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 2001 Sep 02 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 245 Issued at 0245Z on 02 Sep 2001 This report is compiled from data received at SWO on 01 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0314 0314 0314 120 0325 0325 0325 120 0334 0334 0335 140 1102 1103 1103 140 1412 1421 1433 190 1604 1604 1604 230 1924 1925 1926 230 2008 2008 2008 640 2053 2053 2054 170
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field has been
quiet to unsettled with an isolated active period.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 184 SSN 153 Afr/Ap 009/008 X-ray Background B7.5 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.5e+05 GT 10 MeV 1.1e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.30e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 1 1 2 4 3 1 1 Planetary 2 1 2 2 3 3 3 2
F. Comments
S.I.D.C. BRUSSELS INTERNATIONAL PROVISIONAL MONTHLY MEAN SUNSPOT NUMBER RI FOR 2001 AUGUST IS 106.8 (ONE HUNDRED SIX POINT EIGHT).
All times in UTC
Latest news
Sunday, 7 December 2025
M8.1 solar flare with earth-directed CME
Monday, 1 December 2025
X1.9 solar flare, Coronal hole faces Earth
Friday, 14 November 2025
X4.0 solar flare
Latest forum messages
AR4299 M8.1 CME 2025/12/06 308Growth of Cycle 25 976Ask a powergrid operator anything 45Light pillar 11AR4294 / 4296 / 4298 441
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/10 | M1.9 |
| 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 | 157.7 +65.9 |
| Last 30 days | 108.9 +11.4 |