Viewing archive of Tuesday, 27 October 2015
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 2015 Oct 27 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 300 Issued at 0245Z on 27 Oct 2015 This report is compiled from data received at SWO on 26 OctA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep None
B. Proton Events
None.
C. Geomagnetic Activity Summary
The geomagnetic field was quiet.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 106 SSN 072 Afr/Ap 002/001 X-ray Background B3.6 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.7e+05 GT 10 MeV 1.1e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.10e+06 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 1 0 1 0 1 2 1 0 Planetary 1 0 0 0 0 0 0 1
F. Comments
None.
All times in UTC
Latest news
Tuesday, 11 November 2025
X5.1 solar flare, G4 geomagnetic storm watch
Monday, 10 November 2025
X1.2 solar flare with earth-directed CME
Sunday, 9 November 2025
X1.7 solar flare
Latest forum messages
AR 14274 CMES (featuring X5 full halo) 1299Sunspot region 4274 725Ask your obscure/"stupid" space weather questions. 469Earth Time - Wrong? 3Earth Time - Wrong? 0
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 | 2025/11/11 | X5.1 |
| Last M-flare | 2025/11/11 | M1.4 |
| Last geomagnetic storm | 2025/11/12 | Kp9- (G4) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2025 | 114.6 -15.2 |
| November 2025 | 100 -14.6 |
| Last 30 days | 98.3 -35.2 |