Viewing archive of Saturday, 1 November 2003
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 2003 Nov 01 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 305 Issued at 0245Z on 01 Nov 2003 This report is compiled from data received at SWO on 31 OctA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0353 0353 0353 300 0426 0433 0437 M2.0 67 0552 0553 0553 590 0608 0616 0628 0488 N08W28 M1.1 Sf 1121 1122 1125 200 140 1141 1142 1142 240 1507 1507 1508 120 1644 1706 1748 0486 S20W28 C5.3 Sf 220 37 1844 1844 1845 730 2006 2006 2007 1000
B. Proton Events
The greater than 100 MeV proton event in progress
since 28/1145Z, ended at 31/0145Z. This prolonged high energy proton
event was actually two distinct events associated with the X17 and
X10 flares on the 28th and 29th respectively. The peak measurements
for both events were 186 pfu at 29/0015Z and 110 pfu at 29/2310Z.
The greater than 10 MeV proton event remains in progress, but is
quickly declining to the 10 pfu alert threshold. The two peak
measurements at 10 MeV were 29,000 pfu at 29/0615Z and 3300 pfu at
30/1935Z. The PCA event has ended.
C. Geomagnetic Activity Summary
The geomagnetic field ranged from
active to severe storm levels. The intense geomagnetic storm that
began at around 30/1600Z, continued into the early stages of this
period. Severe storm levels persisted from 31/0000Z through
31/0900Z. Mostly active to major storm periods occurred through the
latter half of the period. Solar radiation contamination on the ACE
SWEPAM instrument finally ended at 31/0052Z. Solar wind speed was at
an exceptionally high 1200 km/s, but has been in a gradual decline,
ending the period at over 800 km/s. The prolonged periods of
southward IMF Bz that occurred early in the period have ended. Bz
has been mostly northward since 31/0200Z.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 249 SSN 266 Afr/Ap 065/093 X-ray Background C1.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 9.8e+07 GT 10 MeV 7.0e+06 p/(cm2-ster-day) (GOES-11 satellite synchronous orbit W107 degrees) Daily Electron Fluence GT 2 MeV 3.40e+06 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 7 6 7 5 5 4 3 4 Planetary 8 7 7 6 6 5 4 4
F. Comments
None
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