Viewing archive of Friday, 28 December 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 Dec 28 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 362 Issued at 0245Z on 28 Dec 2001 This report is compiled from data received at SWO on 27 DecA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0526 0613 0619 9752 S15W86 M1.4 2n 26 1127 1133 1141 9742 N08W80 M1.0 Sf 44 1339 1340 1340 470 1643 1658 1720 9748 S10W66 M2.3 2n 110 1824 1828 1838 9743 S07W71 Sf 470 1859 1902 1908 140
B. Proton Events
The greater than 10 MeV proton event, which began
on 26 December, remains in progress. End of day flux levels are
about 20 pfu.
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet
to unsettled levels.
D. Stratwarm
STRATWARM ALERT EXISTS STRATWARM THURSDAY
STRONG STRATOSPHERIC WARMING, WEAKENING IN THE UPPER
STRATOSPHERE, INTENSIFYING IN THE LOWER AND MIDDLE
STRATOSPHERE. TEMPERATURE GRADIENT REVERSED BETWEEN
60N AND THE POLE FROM 10 TO 1 HPA, WITHIN 5 DAYS FROM
50 TO 5 HPA. EASTERLY ZONAL MEAN WINDS AT 60N
FROM 5 TO 1 HPA.
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 275 SSN 268 Afr/Ap 009/006 X-ray Background C3.6 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 6.8e+07 GT 10 MeV 3.8e+06 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 9.90e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 1 1 2 3 3 3 2 Planetary 2 1 1 2 2 3 3 1
F. Comments
Afr estimated from Boulder A.
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