Viewing archive of Monday, 16 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 16 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 106 Issued at 0245Z on 16 Apr 2001 This report is compiled from data received at SWO on 15 AprA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1319 1350 1355 9415 S20W85 X14.4 2b 61000 48000 II/IV 1632 1632 1632 150 1700 1700 1709 110 65
B. Proton Events
Solar proton events at greater than 100 MeV and
greater than 10 MeV followed the X14 flare. The greater than 100 MeV
event began at 15/1405 UTC, reached a maximum of 146 PFU at 15/1525
UTC, then gradually decreased to 12 PFU by the close of the period.
The greater than 10 MeV event began at 15/1410 UTC and reached a
maximum of 951 PFU at 15/1920 UTC. The greater than 10 MeV flux was
551 PFU at the close of the period and slowly decreasing.
C. Geomagnetic Activity Summary
Activity ranged from quiet to
active levels.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 134 SSN 100 Afr/Ap 013/013 X-ray Background B5.5 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 3.9e+07 GT 10 MeV 2.1e+07 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.40e+08 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 4 3 2 3 3 2 2 Planetary 3 4 3 2 4 3 2 3
F. Comments
None
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