Viewing archive of Wednesday, 13 September 2017
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 2017 Sep 13 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 256 Issued at 0245Z on 13 Sep 2017 This report is compiled from data received at SWO on 12 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0227 0227 0227 120 0233 0233 0233 110 0236 0236 0236 100 0305 0305 0305 110 0308 0308 0309 130 0312 0312 0312 110 0335 0335 0335 100 0722 0729 0734 2680 N08E48 C3.0 Sf 860 110 II 0742 0742 0748 2680 N07E48 Sf II 1528 1535 1539 2680 N11E44 B3.5 Sf 110 1903 1920 1928 2680 N10E41 C1.6 Sf 170 II 2357 2357 2359 280
B. Proton Events
The greater than 10 MeV proton flux reached a
peak flux of 748 pfu at 12/0005 UTC. The greater than 100 MeV proton
flux has gradually declined to near 2 pfu.
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to
unsettled for most of the day. An increase to isolated active and
minor storm conditions occurred the final two synoptic periods of
the day, likely associated with the arrival of a CIR ahead of a
positive polarity CH HSS.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 076 SSN 011 Afr/Ap 016/016 X-ray Background A8.3 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.9e+08 GT 10 MeV 2.8e+07 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.00e+08 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 1 4 4 4 3 3 4 Planetary 2 1 3 3 3 3 4 5
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
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 | 2024/04/15 | M3.9 |
| Last geomagnetic storm | 2024/03/25 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2024 | 104.9 -19.8 |