Viewing archive of Tuesday, 22 December 1998
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 1998 Dec 22 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 356 Issued at 0245Z on 22 DEC 1998 This report is compiled from data received at SWO on 21 DECA. 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.
AT THIS TIME, THE EXPECTED SHOCK FROM THE HALO CORONAL MASS EJECTION
ON 18 DEC HAS NOT ARRIVED.
D. Stratwarm
STRATWARM ALERT/MONDAY/STRATWARM EXISTS.
MAJOR WARMING EXISTS.
THE MAIN ANTICYCLONE IS LOCATED OVER NORWEGIAN SEA AND THE
SECOND OVER BERING SEA. THE WARM AIR MOVES SOUTHWARDS TO
BARENTS SEA AND CENTRAL SIBERIAN PLATEAU, FURTHER SLIGHTLY
WEAKENING. THE TWO CENTRES OF THE VORTEX EXIST OVER SIBERIA
AND HUDSON BAY, TODAY.
MEAN ZONAL WIND AT 60 N IS FURTHER FROM EAST AT 10 HPA.
TEMPERATURE GRADIENT REVERSED BETWEEN 60 N AND THE POLE
IN THE LOWER AND MIDDLE STRATOSPHERE.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 135 SSN 072 AFR/AP 003/003 X-RAY BACKGROUND B6.3 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 4.2E+05 GT 10 MEV 1.9E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 4.90E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 1 1 0 1 1 1 1 1 PLANETARY 0 0 1 1 1 2 1 1
F. Comments
None
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