Viewing archive of Tuesday, 2 August 2011
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 2011 Aug 02 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 214 Issued at 0245Z on 02 Aug 2011 This report is compiled from data received at SWO on 01 AugA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0039 0047 0111 1263 N18E34 C2.1 Sf 220 1050 1106 1120 1263 N18E28 Sf 100 1214 1214 1214 220 1556 1600 1607 1261 N15W07 B9.4 Sf 110 1624 1625 1637 1260 N16W33 Sf 100 1929 1929 1932 130 2015 2015 2015 110 2119 2119 2119 240 2121 2121 2121 230
B. Proton Events
None.
C. Geomagnetic Activity Summary
The geomagnetic field has been at
quiet to unsettled levels.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 125 SSN 130 Afr/Ap 006/009 X-ray Background B4.7 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.1e+05 GT 10 MeV 1.2e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 3.20e+07 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 3 2 1 2 2 2 2 Planetary 3 3 3 1 1 2 1 3
F. Comments
None
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 368Geminid Meteor Shower 2AR4294 / 4296 / 4298 445Growth of Cycle 25 977Light pillar 12
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 | M1.6 |
| 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 |