Viewing archive of Thursday, 12 September 2002
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 2002 Sep 12 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 255 Issued at 0245Z on 12 Sep 2002 This report is compiled from data received at SWO on 11 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0137 0143 0148 C2.2 290 0156 0156 0200 0100 S17W51 Sf 140 0726 0735 0742 0105 S10E30 M2.2 2b 68 230 0802 0805 0809 110 0853 0905 0906 190 0929 0929 0929 250 1016 1017 1019 800 1329 1329 1330 260 1621 1621 1621 160 1631 1631 1631 100
B. Proton Events
None
C. Geomagnetic Activity Summary
Geomagnetic field conditions
ranged from quiet to major storm levels. Onset of coronal hole high
speed stream effects were evident since about 11/0900 UTC, and the
single period of major storm conditions observed at higher latitudes
occurred shortly thereafter. The remainder of the day had
conditions in the unsettled to minor storm range.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 216 SSN 213 Afr/Ap 016/028 X-ray Background B8.7 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.0e+06 GT 10 MeV 1.7e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 6.40e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 1 4 5 3 5 3 4 Planetary 2 3 5 6 4 4 4 4
F. Comments
None
Latest news
Saturday, 23 March 2024
X1.1 solar flare with earth-directed CME
Wednesday, 20 March 2024
Sunspot region 3615, G1 watch
Thursday, 22 February 2024
X6.3 solar flare
Latest forum messages
AR 3637, 3638, 3643 40Weird SOHO Noise? 11Growth of Cycle 25 405Unproven theories 322Space Weather Memes 334
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 | 2024/03/28 | X1.1 |
| Last M-flare | 2024/04/18 | M1.2 |
| Last geomagnetic storm | 2024/04/16 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2024 | 104.9 -19.8 |