Viewing archive of Wednesday, 24 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 24 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 055 Issued at 0245Z on 24 FEB 1999 This report is compiled from data received at SWO on 23 FEBA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep None
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET TO
UNSETTLED.
D. Stratwarm
STRATWARM ALERT/TUESDAY/STRATWARM EXISTS.
A LARGE AND VERY INTENSE WARM REGION EXISTS FROM SOUTHERN
EUROPE ACROSS SIBERIA/ALASKA AND THE ADJACENT ARCTIC TO
WESTERN CANADA. WARM AIR IS SPREADING NORTH AND NORTHEASTWARDS.
COLD AIR OVER THE EUROPEAN ARCTIC IS WEAKENING. TEMPERATURE
GRADIENT IS REVERSED BETWEEN 60N AND THE POLE AT 10HPA, TODAY.
MEAN ZONAL WIND AT 60N IS WEAKENING IN THE MIDDLE AND UPPER
STRATOSPHERE. FINAL WARMING IS IN PROGRESS.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 127 SSN 038 AFR/AP 015/007 X-RAY BACKGROUND B4.4 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.6E+06 GT 10 MEV 1.6E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 3.20E+07 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 2 3 2 3 3 2 2 1 PLANETARY 2 2 2 3 3 2 2 0
F. Comments
None
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