Viewing archive of Saturday, 31 December 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 Dec 31 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 365 Issued at 0245Z on 31 Dec 2011 This report is compiled from data received at SWO on 30 DecA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0303 0309 0313 1389 S27E64 M1.2 Sn 0335 0335 0335 100 1600 1600 1600 220 1759 1759 1801 140 1811 1811 1811 110 1816 1823 1842 1389 S27E55 C1.8 Sf 210 1858 1858 1858 150 2204 2206 2206 180 2328 2333 2338 1389 S23E47 C1.6 Sf 240 2350 2350 2350 110
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was quiet.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 141 SSN 104 Afr/Ap 005/005 X-ray Background B5.6 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-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 7.20e+05 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 1 1 1 1 2 3 2 2 Planetary 1 1 1 0 1 3 2 2
F. Comments
None
All times in UTC
Latest news
Monday, 11 November 2024
Coronal hole faces Earth
Friday, 1 November 2024
X2.0 solar flare
Wednesday, 9 October 2024
X1.8 solar flare, severe geomagnetic storm watch
Latest forum messages
sun goes blank 41AR13883 2024/11/04 CME 41Incoming & Unnumbered Active Regions 1204AR 3878 176Space Weather Memes 561
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 | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/11 | M1.3 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 175.7 +9.3 |
| Last 30 days | 164.2 +19.1 |