Viewing archive of Saturday, 19 December 1998

Geophysical report

Solar and Geophysical Activity Summary 1998 Dec 19 0245 UTC
Prepared 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 DEC
A. 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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