Viewing archive of Sunday, 15 April 2001
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 2001 Apr 15 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 105 Issued at 0245Z on 15 Apr 2001 This report is compiled from data received at SWO on 14 AprA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1715 1811 1828 9415 S16W71 M1.0 Sf 210 31 1734 1737 1742 250 150 1752 1752 1755 52 55 II 2320 2323 2326 9415 S20W71 B7.9 Sf 110
B. Proton Events
There were no proton events detected at
geosynchronous orbit. However, the greater than 10 MeV proton flux
continued at enhanced levels (due to recent major flare activity) as
it gradually declined toward background levels.
C. Geomagnetic Activity Summary
Activity was at unsettled to
active levels until 14/0900 UTC, then decreased to quiet to
unsettled levels.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 139 SSN 149 Afr/Ap 017/015 X-ray Background B5.1 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 4.1e+06 GT 10 MeV 1.7e+05 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 6.50e+07 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 4 4 3 3 3 3 2 Planetary 3 3 4 3 3 3 3 2
F. Comments
None
All times in UTC
Latest news
Monday, 11 November 2024
Coronal hole faces Earth
Friday, 1 November 2024
X2.0 solar flare
Wednesday, 9 October 2024
X1.8 solar flare, severe geomagnetic storm watch
Latest forum messages
sun goes blank 42AR13889 135AR13883 2024/11/04 CME 43Incoming & Unnumbered Active Regions 1204AR 3878 176
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 | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/11 | M1.3 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 175.7 +9.3 |
| Last 30 days | 166.1 +21.7 |