Viewing archive of Sunday, 24 April 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 Apr 24 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 114 Issued at 0245Z on 24 Apr 2011 This report is compiled from data received at SWO on 23 AprA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0339 0353 0400 1195 C1.9 0414 0419 0421 1195 S17E25 C1.1 Sf
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was mostly
quiet, with an isolated period with unsettled to active levels
between 23/0900-1200Z.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 119 SSN 080 Afr/Ap 004/006 X-ray Background B3.7 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.0e+05 GT 10 MeV 1.3e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W76 degrees) Daily Electron Fluence GT 2 MeV 4.80e+06 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W76 degrees) 3 Hour K-indices Boulder 2 1 1 4 1 2 1 1 Planetary 2 1 0 3 1 2 1 1
F. Comments
None
All times in UTC
Latest news
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Sunday, 18 January 2026
X1.9 solar flare with earth-directed CME
Wednesday, 31 December 2025
Happy New Year! Celebrate with an M7.1 solar flare!
Latest forum messages
New satellites - Proba-3, PUNCH, SWFO-L1, GOES-U/19 66Filaments and prominences 474Broad-spectrum aurora pillars 11Solar Transit, Artifacts, or Radiation 79Solar flux data and sun images from the German Federal Agency for Cartography and Geodesy 8
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 | 2026/01/18 | X1.9 |
| Last M-flare | 2026/01/21 | M3.4 |
| Last geomagnetic storm | 2026/01/22 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| January 2026 | 119.4 -4.6 |
| Last 30 days | 121.8 +8.9 |