Viewing archive of Friday, 7 April 2000
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 2000 Apr 07 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 098 Issued at 0245Z on 07 APR 2000 This report is compiled from data received at SWO on 06 APRA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0218 0229 0238 8948 S15E53 M1.8 2B 42 220 II 1825 1844 1851 8948 S13E43 C2.3 1F 220
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD RANGED FROM
UNSETTLED TO MAJOR STORM LEVELS. A SHOCK WAS OBSERVED BY THE ACE
SPACECRAFT AROUND 06/1600UT. THE ASSOCIATED SUDDEN IMPULSE WAS
OBSERVED AT 1640UT (37NT AS OBSERVED AT SAN JUAN) AND THE FIELD HAS
BEEN AT MAJOR STORM LEVELS SINCE THAT TIME. THERE WERE MAGNETOPAUSE
CROSSINGS OBSERVED ON BOTH GOES 8 AND GOES 10 STARTING AROUND
1800UT. THIS DISTURBANCE IS MOST LIKELY THE CONSEQUENCE OF THE HALO
CME OBSERVED FOLLOWING THE C9/2F FLARE AT 04/1541UT. THE SATELLITE
PROTON EVENT WHICH BEGAN AT 04/2055UT, ENDED TODAY AT 0155UT.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 178 SSN 155 AFR/AP 034/056 X-RAY BACKGROUND B9.6 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 5.9E+07 GT 10 MEV 3.7E+05 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 2.40E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 3 3 3 3 2 6 5 6 PLANETARY 3 3 3 3 3 6 7 8
F. Comments
None
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