:Product: 1227SGAS.txt
:Issued: 2011 Dec 27 0245 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Weather Prediction Center and the U.S. Air Force.
#
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 361 Issued at 0245Z on 27 Dec 2011
This report is compiled from data received at SWO on 26 Dec
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0213 0227 0236  1387 S21W33 M1.5  1n 230                           
 0348 0348 0350                       100                           
 0352 0352 0352                       100                           
 0356 0356 0356                       100                           
 0434 0434 0434                       170                           
 0528 0528 0528                       190                           
 0609 0609 0609                       180                           
 0728 0728 0728                       370                           
 0748 0748 0749                       210                           
 0850 0850 0850                       100                           
 0855 0855 0918  1387 S20W36       Sf 140                           
 1148 1148 1148                       140                           
 1330 1330 1330                       110                           
 2012 2030 2036  1387 S21W42 M2.3  Sf 130                           
B.  Proton Events:  A proton enhancement at geosynchronous orbit was
observed by the GOES 13 spacecraft with a max flux of 3 PFUs at
26/0135Z.  The enhancement appears to be correlated to the M4/1n
flare from Region 1387 (S22W42) on 25 December.  This event did not
reach event threshold and has returned to background levels at the
time of this report.
C.  Geomagnetic Activity Summary:  The geomagnetic field was quiet.
D.  Stratwarm:  Not Available
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 146  SSN 110  Afr/Ap 002/000   X-ray Background B6.5
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 3.9e+05   GT 10 MeV 8.3e+04 p/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 9.90e+05 e/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 0 0 1 0 1 2 2 0 Planetary 0 0 0 0 0 0 0 0 
F.  Comments:  None.