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 UTC
Prepared 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 APR
A. 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


All times in UTC

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