Viewing archive of Wednesday, 18 August 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 Aug 18 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 230 Issued at 0245Z on 18 AUG 1999 This report is compiled from data received at SWO on 17 AUGA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0453 0000 0459 II 0837 0837 0837 150 0848 0848 0849 150 1232 1323 1357 8668 N26E35 C2.6 SF 130 67 1428 1602 1754 8668 N24E37 C5.9 SF 530 39 1433 1435 1440 8662 S17W81 SF II 1644 1738 1905 820
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS AT
ACTIVE TO MINOR STORM LEVELS THROUGHOUT THE PERIOD. A HIGH SPEED
SOLAR WIND STREAM, REGISTERING BETWEEN 500 AND 700 KM/S, CONTINUES
TO BUFFET THE MAGNETOPAUSE. THE FLUX OF GREATER THAN 2 MEV ELECTRONS
AT GEOSYNCHRONOUS ORBIT REACHED HIGH LEVELS FROM APPROXIMATELY 1500
TO 1800Z.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 141 SSN 067 AFR/AP 030/027 X-RAY BACKGROUND B3.2 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 6.4E+05 GT 10 MEV 1.4E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 3.00E+07 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 5 5 5 4 4 4 3 2 PLANETARY 5 4 5 4 4 4 3 3
F. Comments
None
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