Viewing archive of Saturday, 1 May 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 May 01 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 121 Issued at 0245Z on 01 MAY 1999 This report is compiled from data received at SWO on 30 APRA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep None
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS
GENERALLY ACTIVE. A HIGH SPEED SOLAR WIND STREAM, AT TIMES REACHING
MORE THAN 650 KM/S AT THE ACE SPACECRAFT, DROVE THE FIELD TO
EPISODES OF MINOR STORM ACTIVITY DURING THE PERIOD. THE GREATER THAN
2 MEV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT ATTAINED HIGH LEVELS
FROM ABOUT 1300 TO 2100Z.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 124 SSN 080 AFR/AP 018/021 X-RAY BACKGROUND B4.4 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 5.5E+05 GT 10 MEV 1.4E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 6.00E+07 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 4 4 4 2 3 3 3 3 PLANETARY 4 4 5 4 2 3 3 3
F. Comments
None
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