:Product: 20001218SGAS.txt
:Issued: 2000 Dec 18 0245 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Environment Center and the U.S. Air Force.
#
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 353 Issued at 0245Z on 18 Dec 2000
This report is compiled from data received at SWO on 17 Dec
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
1141 1142 1142                       120
B.  Proton Events:  None
C.  Geomagnetic Activity Summary:  The geomagnetic field was mostly
quiet to unsettled with an isolated period of active conditions
observed during the 17/1500 - 1800Z period.
D.  Stratwarm:  STRATWARM ALERT EXISTS STRATWARM SUNDAY
STRONG STRATOSPHERIC WARMING IS IN PROGRESS.
STRONG ELONGATED POLAR VORTEX WITH A MAJOR CENTER
OVER NORTHERN CANADA AND A MINOR CENTER OVER RUSSIA
IS WEAKENING.  AN ANTICYCLONE EXISTS OVER BOTH THE
NORTHERN PACIFIC AND THE NORTH ATLANTIC WITH THE
WARMEST AIR OVER THE LABRADOR SEA.  THE WARM REGION
OVER CENTRAL ASIA IS WEAKENING.

E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 197  SSN 229  Afr/Ap 006/008   X-ray Background C1.2
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 3.6e+05   GT 10 MeV 1.1e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 8.90e+06 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 2 3 2 2 3 4 3 1 Planetary 1 2 1 2 3 3 3 1
F.  Comments:  None