Viewing archive of Friday, 17 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 17 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 260 Issued at 0245Z on 17 SEP 1999 This report is compiled from data received at SWO on 16 SEPA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 2145 2145 2146 190
B. Proton Events
None
C. Geomagnetic Activity Summary
FIELD ACTIVITY VARIED FROM QUIET
TO MINOR STORM LEVELS WITH BRIEF MAJOR TO SEVERE STORM INTERVALS AT
HIGH LATITUDES. MOST OF THE INCREASED ACTIVITY, ESPECIALLY THE STORM
PERIODS, OCCURRED BEFORE 16/1200Z.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 158 SSN 153 AFR/AP 025/032 X-RAY BACKGROUND B5.7 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 2.0E+06 GT 10 MEV 1.3E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 1.70E+08 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 4 5 5 5 2 3 2 3 PLANETARY 3 6 5 5 4 4 3 2
F. Comments
None
All times in UTC
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