Viewing archive of Sunday, 1 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 01 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 091 Issued at 0245Z on 01 Apr 2001 This report is compiled from data received at SWO on 31 MarA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0002 0005 0013 9393 N19W20 Sf 300 0845 0845 0846 3100 1100 1112 1131 9393 N16W34 M2.1 Sf 100 1654 1654 1654 200 2048 2049 2051 540
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field has been at
severe storm levels. A shock passed the ACE spacecraft at 31/0023
UT and subsequently reached Earth's magnetic field at 31/0051. The
storm developed after that time and reached maximum intensity after
31/0900 UT. It has continued into the later hours of the UT days.
Dynamic auroral displays were reported across the United States with
especially dynamic displays reported in Arizona, west Texas and
California. The solar proton event that began at 29/1000 UT was
declared over at 01/0600 UT.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 246 SSN 326 Afr/Ap 131/155 X-ray Background C2.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 6.8e+07 GT 10 MeV 6.9e+05 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 1.10e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 6 7 9 6 6 6 7 5 Planetary 6 8 9 6 7 7 8 6
F. Comments
None
All times in UTC
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