Viewing archive of Saturday, 19 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 19 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 353 Issued at 0245Z on 19 DEC 1998 This report is compiled from data received at SWO on 18 DECA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0514 0527 0530 8415 N18E69 C3.4 SF 790 0537 0537 0538 240 1247 1252 1254 8409 S29W66 C2.9 SF 2200 1713 1722 1727 8415 N19E64 M8.0 2N 880 II 1729 1730 1737 17 170 1814 1814 1823 4600 1819 1819 1819 1200 2247 2247 2248 250
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET.
D. Stratwarm
STRATWARM ALERT/FRIDAY/STRATWARM EXISTS.
MAJOR WARMING EXISTS.
THE STRONG ANTICYCLONE OVER THE CANADIAN ARCTIC MOVES
NORTHWARDS. VERY INTENSE WARMING OVER THE POLAR REGION
CONTINUES. TODAY, THE WARM AIR COVERS THE EUROPEAN ARCTIC
TOO, THEREFORE THE COLD REGION IS DISPLACED SOUTH OF 50 N
OVER NORTH ATLANTIC AND EUROPE. THE MAIN VORTEX EXISTS
OVER SOUTHERN URAL AREA AND A WEAKER SECOND VORTEX
EXISTS OVER NEWFOUNDLAND.
MEAN ZONAL WIND AT 60N IS FROM EAST AT 10 HPA AND
ABOVE IN THE UPPER STRATOSPHERE AND TEMPERATURE GRADIENT
REVERSED BETWEEN 60N AND THE POLE IN THE WHOLE STRATOSPHERE.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 155 SSN 076 AFR/AP 002/003 X-RAY BACKGROUND C1.0 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 2.0E+05 GT 10 MEV 1.6E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 7.30E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 0 0 1 2 1 2 1 0 PLANETARY 0 0 0 2 1 1 1 0
F. Comments
None
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