Viewing archive of Sunday, 18 March 2012
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 2012 Mar 18 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 078 Issued at 0245Z on 18 Mar 2012 This report is compiled from data received at SWO on 17 MarA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 2032 2039 2042 1434 S20W25 M1.3 Sf 610 54 II
B. Proton Events
None
C. Geomagnetic Activity Summary
Field activity ranged from quiet
to major storm levels due to effects from a high speed solar wind
stream.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 102 SSN 089 Afr/Ap 015/022 X-ray Background B2.0 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.2e+06 GT 10 MeV 2.5e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.40e+08 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 4 3 4 3 3 3 3 3 Planetary 4 4 4 3 2 3 4 4
F. Comments
None
All times in UTC
Latest news
Wednesday, 14 May 2025
Another X-flare! Potent sunspot region 4087!
Tuesday, 13 May 2025
X1.1 solar flare from sunspot region 4086
Tuesday, 15 April 2025
CME arrival, G3 storm watch
Latest forum messages
Filaments and prominences 174Sunspot Latitudes at or near Solar Maximum 88Growth of Cycle 25 905AR14097 2Incoming & Unnumbered Active Regions 1906
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 | 2025/05/14 | X2.7 |
| Last M-flare | 2025/05/21 | M1.2 |
| Last geomagnetic storm | 2025/05/17 | Kp6+ (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2025 | 140.6 +6.4 |
| May 2025 | 70.9 -69.7 |
| Last 30 days | 85.8 -27.8 |