Viewing archive of Saturday, 18 September 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 Sep 18 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 261 Issued at 0245Z on 18 SEP 1999 This report is compiled from data received at SWO on 17 SEPA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0114 0114 0114 150 0114 0120 0123 8690 N14W64 M2.1 SF 120 0732 0732 0732 120 1147 1206 1220 8703 N18W81 C4.5 SF 110
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS AT QUIET
TO ACTIVE LEVELS WITH MINOR TO MAJOR STORM PERIODS DETECTED AT HIGH
LATITUDES.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 158 SSN 144 AFR/AP 015/015 X-RAY BACKGROUND B5.7 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 4.2E+05 GT 10 MEV 1.2E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 1.60E+08 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 3 2 2 3 3 3 3 2 PLANETARY 3 2 2 3 4 4 2 2
F. Comments
None
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