Viewing archive of Monday, 25 January 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 Jan 25 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 025 Issued at 0245Z on 25 JAN 1999 This report is compiled from data received at SWO on 24 JANA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1221 1237 1250 8439 S25W68 C2.0 SF 150 1730 1731 1734 180
B. Proton Events
THE GT 10 MEV PROTON FLUX REMAINED ENHANCED BUT
BELOW EVENT LEVEL FOR THE ENTIRE PERIOD.
C. Geomagnetic Activity Summary
DURING THE FIRST HALF OF THE
PERIOD, THE GEOMAGNETIC FIELD WAS AT UNSETTLED TO ACTIVE LEVELS.
QUIET TO UNSETTLED CONDITIONS WERE OBSERVED DURING THE LATTER HALF.
A FORBUSH DECREASE BEGAN EARLY ON 23 JAN. THE NEUTRON FLUX DURING
THE EVENT WAS DEPRESSED BY APPROXIMATELY 6 PERCENT NEAR MIDDAY ON 24
JAN. AT THE END OF THE PERIOD, THE FORBUSH DECREASE WAS SLOWLY
RECOVERING TO NORMAL VALUES.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 162 SSN 107 AFR/AP 011/013 X-RAY BACKGROUND C1.0 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.0E+07 GT 10 MEV 1.8E+05 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 7.80E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 3 4 3 2 2 3 2 2 PLANETARY 4 3 3 3 2 3 3 1
F. Comments
None
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