Viewing archive of Friday, 1 May 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 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 1998 This report is compiled from data received at SWO on 30 APRA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0444 0444 0444 170 1001 0000 2319 IV 1335 1338 1341 B3.1 110 1721 0000 0000 IV 1911 1912 1914 630 2115 2125 2136 8210 S21E03 C6.6 2N 2121 2121 2122 140 2144 2205 2302 8214 N24E49 SF 170 2259 2259 2259 1200 2333 2333 2333 110
B. Proton Events
A WEAK ENERGETIC PROTON (GT 10 MEV) ENHANCEMENT
BEGAN AT 30/0405Z. MAXIMUM FLUX WAS 2 PFU. THIS ENHANCEMENT IS
ATTRIBUTED TO THE M6/HALO CME OBSERVED ON 29 APR.
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET
UNTIL A 31NT SUDDEN IMPULSE WAS OBSERVED AT 30/0933Z. THIS WAS
PRECEDED BY A SHOCK PASSAGE AT THE ACE SPACECRAFT AT 30/0845Z. AFTER
THE SUDDEN IMPULSE, UNSETTLED TO ACTIVE CONDITIONS WERE OBSERVED.
THIS DISTURBANCE IS BELIEVED TO BE RELATED TO THE X1/HALO CME
OBSERVED ON 27 APR. ENERGETIC ELECTRON FLUXES AT GEOSYNCHRONOUS
ORBIT WERE PREDOMINANTLY HIGH.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 103 SSN 074 AFR/AP 011/012 X-RAY BACKGROUND B3.3 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 2.1E+07 GT 10 MEV 9.1E+04 P/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 2.70E+08 E/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) 3 HOUR K-INDICES: BOULDER 2 1 1 3 4 3 2 3 PLANETARY 2 1 1 3 4 4 3 3
F. Comments
None
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