Viewing archive of Saturday, 21 August 1999
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 1999 Aug 21 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 233 Issued at 0245Z on 21 AUG 1999 This report is compiled from data received at SWO on 20 AUGA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0326 0326 0327 310 0445 0447 0449 250 0548 0553 0601 C2.5 220 0624 0624 0625 110 0926 0926 0928 230 1236 1418 1706 8674 S28E75 M1.8 SF 1900 51 1719 1719 1720 270 1825 1829 1832 8674 S23E66 M1.2 SF 6100 180 1840 0000 1845 II 1921 1927 1932 8674 S23E66 C7.8 SF 850 140 2303 2308 2310 8674 S25E64 M9.8 1N 13000 480 II
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD RANGED FROM
UNSETTLED TO MINOR STORM LEVELS.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 152 SSN 065 AFR/AP 020/033 X-RAY BACKGROUND C1.8 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 3.0E+06 GT 10 MEV 1.3E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 2.20E+08 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 3 5 4 4 4 3 3 3 PLANETARY 3 5 5 5 5 4 3 3
F. Comments
THE GREATER THAN 2 MEV ELECTRON FLUENCE WAS MODERATE.
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