Viewing archive of Saturday, 28 January 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 Jan 28 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 028 Issued at 0245Z on 28 Jan 2012 This report is compiled from data received at SWO on 27 JanA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1302 1305 1309 C1.0 560 1737 1837 1856 1402 N27W71 X1.7 1f 1100 810 II/IV
B. Proton Events
Proton levels are high. A 10 MeV proton event
began at 27/1905Z and reached a peak of 701 pfu at 28/0105Z. A 100
MeV proton event began at 27/1900Z and reached a peak of 11.9 pfu at
27/2140Z. These events are still in progress.
C. Geomagnetic Activity Summary
Geomagnetic activity was quiet to
unsettled. Minor storm levels were observed at high latitudes.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 142 SSN 039 Afr/Ap 006/007 X-ray Background B5.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.6e+07 GT 10 MeV 4.7e+06 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W74 degrees) Daily Electron Fluence GT 2 MeV 5.50e+07 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W74 degrees) 3 Hour K-indices Boulder 1 2 4 2 2 2 3 1 Planetary 1 2 3 2 2 1 2 1
F. Comments
The reported 10cm flux value was flare enhanced by an X1.7 event that occurred at 27/1837Z. Estimated 10cm flux is approximately 120 sfu.
All times in UTC
Latest news
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Monday, 11 November 2024
Coronal hole faces Earth
Latest forum messages
Strong far side CME 327Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 9Unspecified geomagnetic activity 1748Filaments and prominences 595Incoming & Unnumbered Active Regions 1351
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 | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/22 | M1.0 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 103.3 -49.2 |
| Last 30 days | 115.4 -40.8 |