Viewing archive of Saturday, 29 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 29 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 363 Issued at 0245Z on 29 Dec 2001 This report is compiled from data received at SWO on 28 DecA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0342 0351 0356 9742 N04W90 M4.7 Sf 270 1210 1230 1259 9748 S12W77 M1.3 Sf 1653 1653 1654 110 1937 1938 1941 480 2002 2045 2132 X3.4 700 1600 II 2048 2052 2056 9754 S11E01 Sf 820
B. Proton Events
The greater than 10 MeV proton event which had
been in progress since 26 December ended today. The event began at
26/0605 UTC, reached a maximum flux of 779 pfu at 26/1115 UTC, and
ended at 28/1040 UTC.
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to
unsettled.
D. Stratwarm
STRATWARM ALERT/FRIDAY/STRATWARM EXISTS.
STRONG STRATOSPHERIC WARMING, INTENSIFYING IN THE LOWER
STRATOSPHERE, WEAKENING IN THE UPPER STRATOSPHERE.
5-DAY FORECASTS INDICATE A SPLIT OF THE POLAR VORTEX
IN THE LOWER STRATOSPHERE, A REVERSED TEMPERATURE GRA-
DIENT BETWEEN 60N AND THE NORTH POLE FROM 50 TO 10 HPA,
NET EASTERLY WINDS AT 60N FROM 5 TO 2 HPA.
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 263 SSN 263 Afr/Ap 009/005 X-ray Background C2.6 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 4.0e+07 GT 10 MeV 7.7e+05 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 7.20e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 1 0 2 2 3 3 3 3 Planetary 1 0 1 2 2 2 2 2
F. Comments
Afr estimated from Boulder A.
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