Viewing archive of Sunday, 25 April 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 Apr 25 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 115 Issued at 0245Z on 25 APR 1999 This report is compiled from data received at SWO on 24 APR
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None
B. Proton Events
A GREATER THAN 10 MEV PROTON EVENT BEGAN AT 24/1820UT. THE MAXIMUM FLUX OBSERVED SO FAR IS 32 PFU AT 25/0055UT. THE EVENT CONTINUES TO BE IN PROGRESS.
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 101  SSN 089  AFR/AP 007/007   X-RAY BACKGROUND B1.4
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 1.9E+06   GT 10 MEV 4.5E+05 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 1.60E+07 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 2 2 1 2 2 2 2 0 PLANETARY 3 2 2 2 1 3 2 1
F. Comments
  None


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