Viewing archive of Wednesday, 28 March 2001

Geophysical report

Solar and Geophysical Activity Summary 2001 Mar 28 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 087 Issued at 0245Z on 28 Mar 2001 This report is compiled from data received at SWO on 27 Mar
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0222 0247 0341  9393 N14E17 C7.3  Sf 1700   99
0548 0548 0549                       750
0925 0927 0945  9389 S11W11       Sf 890
1507 1509 1516  9401 N20E32       Sf               II
1625 1630 1632  9401 N21E33 M2.2  1n 400    230    II
1633 0000 1639                                     II
1910 1918 1930  9390 N16W18 C5.6  Sf               II
2110 2113 2115              C5.3     490
2301 2301 2302                       4000
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to minor storm conditions. Two different shocks were observed on the ACE spacecraft. The first occurred at 27/0108 UTC with an associated sudden impulse of 27 nT on the Boulder magnetometer at 27/0145 UTC. The second shock occurred at 27/1718 UTC with an associated sudden impulse of 10 nT observed on the Boulder magnetometer at 27/1745 UTC.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 273  SSN 291  Afr/Ap 015/018   X-ray Background C2.1
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 4.6e+07   GT 10 MeV 1.5e+05 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 7.60e+06 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 3 2 2 3 2 3 4 5 Planetary 4 2 2 3 2 3 4 5
F. Comments
  The greater than 10 MeV proton flux at geosynchronous
orbit was enhanced during the period, but stayed below event
threshold with an observed maximum of approximately 6 pfu.

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