Viewing archive of Tuesday, 19 March 2002

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 2002 Mar 19 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 078 Issued at 0245Z on 19 Mar 2002 This report is compiled from data received at SWO on 18 Mar
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0045 0045 0045                       300
0133 0145 0150              C1.1     240
0143 0144 0145                       920
0216 0231 0400              M1.0     46     110    IV
0429 0429 0429                       110
0923 0923 0923                       150
0933 0933 0933                       130
1247 1247 1247                       550
1906 1918 1922  9871 S21E02 C8.9  1f 150    69
2147 2152 2155  9871 S19E01 C2.1  Sf 140
B. Proton Events
The greater than 10 MeV proton event that began at 17/0820 UTC reached maximum of 13 pfu at 17/0850 UTC and ended at 17/1230 utc. A new greater than 10 MeV proton event began at 18/1300 UTC and continues in progress. The peak flux observed so far was 25 pfu at 18/1535 UTC.
C. Geomagnetic Activity Summary
The geomagnetic field ranged from quiet to active. A sudden impulse of 42 nT was observed in Boulder at 19/1323 UTC.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 178  SSN 136  Afr/Ap 015/012   X-ray Background B6.0
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.9e+08   GT 10 MeV 9.6e+05 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 1.50e+06 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 1 0 2 4 3 3 3 Planetary 2 1 0 2 4 3 4 3
F. Comments
  None

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