Viewing archive of Saturday, 31 July 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 Jul 31 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 212 Issued at 0245Z on 31 JUL 1999 This report is compiled from data received at SWO on 30 JULA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0716 0720 0724 8651 N25E46 C3.9 SF 110 1509 1520 1526 8649 S15W28 M1.7 1B 1200 56
B. Proton Events
None.
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET TO
UNSETTLED UNTIL NEAR 30/0900Z. THEREAFTER, THE FIELD WAS AT
GENERALLY ACTIVE TO MAJOR STORM LEVELS. SOME SEVERE STORMING WAS
OBSERVED AT HIGH LATITUDES. A SUDDEN STORM COMMENCEMENT OF 89 NT WAS
OBSERVED AT 30/1948Z.
D. Stratwarm
None.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 206 SSN 218 AFR/AP 036/036 X-RAY BACKGROUND C1.7 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 7.7E+05 GT 10 MEV 1.5E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 7.50E+05 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 2 2 3 4 5 4 6 6 PLANETARY 3 2 3 4 5 4 6 6
F. Comments
None.
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