Viewing archive of Wednesday, 22 April 1998
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 1998 Apr 22 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 112 Issued at 0245Z on 22 APR 1998 This report is compiled from data received at SWO on 21 APRA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1008 1008 1008 210
B. Proton Events
THE GREATER THAN 10 AND 100 MEV EVENTS REMAIN IN
PROGRESS. THE GREATER THAN 10 MEV EVENT THAT BEGAN AT 20/1400Z
APPEARS TO HAVE PEAKED WITH A MAXIMUM VALUE OF 1700 PFU AT 21/1205,
AND IS CURRENTLY IN A SLOW DECLINE AT APPROXIMATELY 530 PFU. THE
GREATER THAN 100 MEV EVENT PEAKED WITH A MAXIMUM VALUE OF 7.4 PFU
AT 21/1255Z, AND IS CURRENTLY DECLINING BACK NEAR EVENT THRESHOLD.
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD HAS BEEN
MOSTLY QUIET FOR THE PAST 24 HOURS.
D. Stratwarm
None.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 092 SSN 047 AFR/AP 007/007 X-RAY BACKGROUND B3.3 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.2E+08 GT 10 MEV 7.2E+07 P/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 1.40E+04 E/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) 3 HOUR K-INDICES: BOULDER 2 3 2 2 1 2 1 2 PLANETARY 2 3 1 2 2 2 2 2
F. Comments
None
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