Viewing archive of Sunday, 21 February 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 Feb 21 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 052 Issued at 0245Z on 21 FEB 1999 This report is compiled from data received at SWO on 20 FEBA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0400 0406 0410 8458 S21W63 C8.2 SF 270 II/IV 0617 0617 0617 560 0714 0714 0715 2200 0951 0954 0956 8462 N18W60 C1.7 SF 440 13 1409 1412 1414 8462 N20W63 C2.1 SF 1700 1511 1519 1528 8458 S17W71 C4.2 SF 290 33 II
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET TO
UNSETTLED.
D. Stratwarm
STRATWARM ALERT/SATURDAY/STRATWARM EXISTS.
INTENSE LARGE WARM REGION EXISTS FROM ALEUTIAN AREA,
SIBERIA WITH SIBERIAN ARCTIC TO BLACK SEA. THE WARM AIR
OVER SIBERIA IS EXTENDING FURTHER NORTHWARDS.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 157 SSN 118 AFR/AP 003/005 X-RAY BACKGROUND B7.9 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.8E+05 GT 10 MEV 1.4E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 2.70E+07 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 1 0 0 0 2 3 2 0 PLANETARY 1 0 0 0 2 2 3 2
F. Comments
None
All times in UTC
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